Slip-in Cartridge Valves
to ISO 7368 (DIN 24342)
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EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 20124
Table of Contents
Availability Summary ................................................................................................................................................................... 6
Covers ............................................................................................................................................................................. 6
Inserts.............................................................................................................................................................................. 7
CVU units ......................................................................................................................................................................... 7
Pilot control modules ....................................................................................................................................................... 7
Functional Symbols ...................................................................................................................................................................... 8
Covers ............................................................................................................................................................................. 8
Inserts............................................................................................................................................................................. 10
Introduction to Cartridge Valves ................................................................................................................................................. 12
Features and Benefits .................................................................................................................................................................. 13
Cartridge Valve Design ................................................................................................................................................................14
Applications, Ratings and Characteristics ................................................................................................................................. 17
Filteration and Viscosity Requirement ......................................................................................................................................19
Check, Directional and Flow Restrictor Functions: Sizes 16 to 63 ......................................................................................... 21
Functional descriptions .................................................................................................................................................. 22
Model codes .................................................................................................................................................................. 27
Performance data .......................................................................................................................................................... 29
Installation dimensions .................................................................................................................................................. 32
Pressure Relief & Venting Functions ........................................................................................................................................ 39
Functional descriptions .................................................................................................................................................. 40
Model codes .................................................................................................................................................................. 43
Performance data .......................................................................................................................................................... 45
Installation dimensions .................................................................................................................................................. 47
Pressure Unloading/Relief Functions ...................................................................................................................................... 51
Functional descriptions .................................................................................................................................................. 52
Model codes .................................................................................................................................................................. 53
Performance data .......................................................................................................................................................... 55
Installation dimensions .................................................................................................................................................. 57
Pressure Reducing Functions ................................................................................................................................................... 59
Functional descriptions .................................................................................................................................................. 59
Model codes .................................................................................................................................................................. 61
Performance data .......................................................................................................................................................... 63
Installation dimensions ................................................................................................................................................... 65
Dynamic Functions ..................................................................................................................................................................... 69
Functional descriptions ................................................................................................................................................... 69
Model codes ................................................................................................................................................................... 72
Performance data ........................................................................................................................................................... 74
Installation dimensions ................................................................................................................................................... 75
Valvistor
®
Proportional Throttle Valves ..................................................................................................................................... 78
Functional descriptions ................................................................................................................................................... 78
Model code..................................................................................................................................................................... 81
Operating data ................................................................................................................................................................ 82
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 5
Table of Contents
Installation dimensions .................................................................................................................................................. 86
Valvistor
®
Line Extension ................................................................................................................................................ 87
Electrohydraulic Proportional Throttle Valves (Type EFP1) ..................................................................................................... 89
Functional description .................................................................................................................................................... 89
Model codes .................................................................................................................................................................. 90
Operating and performance data .................................................................................................................................. 91
Installation dimensions .................................................................................................................................................. 93
Directional Valves with Electrical Indication (Type SWD) ...................................................................................................... 94
Functional description .................................................................................................................................................... 94
Model codes ................................................................................................................................................................... 96
Performance data ............................................................................................................................................................ 98
Installation dimensions .................................................................................................................................................. 101
Mounting bolts, Seal kits, Mass, Ordering procedure ...................................................................................................104
Special Function Valves ............................................................................................................................................................. 105
1:0.25 area ratio cartridge unit .......................................................................................................................................105
Normally open prefill valve ............................................................................................................................................ 106
Hydrostat functions....................................................................................................................................................... 107
Model codes ................................................................................................................................................................. 108
Installation dimensions ................................................................................................................................................. 110
Pilot Control Modules ............................................................................................................................................................... 112
Functional description .................................................................................................................................................... 112
Applications.................................................................................................................................................................... 112
Model codes .................................................................................................................................................................. 114
Installation dimensions .................................................................................................................................................. 115
Supplementary Data ................................................................................................................................................................. 116
Standard orifice sizes and threads ................................................................................................................................. 116
Optional orifice kits, orifice plug assembly data ............................................................................................................ 117
Orifice sizing guide......................................................................................................................................................... 118
Pressure drop at other viscosities .................................................................................................................................. 119
Mounting bolt data ......................................................................................................................................................... 120
Seal kits..........................................................................................................................................................................122
Insert cavity dimensions to ISO 7368:
Sizes 16 to 63 .................................................................................................................................................................123
Ordering Procedure ...................................................................................................................................................................125
Mass Summary .......................................................................................................................................................................... 126
Service/Spares Policy ................................................................................................................................................................127
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 20126
Product Availability Summary - Covers
Sizes 16 to 63
Size Insert Most Commonly
Model Type Description 16 25 32 40 50 63 Used With
A Stroke adjuster • • • • • • R15, F15
A3 Stroke adjuster with size 03 pilot interface • • • • • • R15, F15
B Blank • • • • • • DC15
C Relief • • • • D10, C10F, R10, D10Z
C3 Relief with size 03 pilot interface • • • • D10, C10F, R10, D10Z
C025 1:0.25 area ratio • • • • • • C025
D3 Directional with size 03 pilot interface • • • • • • D15, R15
DC3 Dual check valve with size 03 pilot interface • • • • • • D15, R15
HFV Valvistor proportional throttle HFV • • • • • • HFV
N Basic • • • • • • D105, D15
OD Prell valve • • • • • OD105
PC Pilot operated check • • • • • • D15
SC Main system relief • • • • D10
SC3 Main system relief with size 03 pilot interface • • • • D10
U Unloading relief • • • • U
U3 Unloading relief with size 03 pilot interface • • • • U
W Shuttle • • • • • • D15
W13 Shuttle type 1, with size 03 pilot interface • • • • • • D15
W33 Shuttle type 3, with size 03 pilot interface • • • • • • D15
X Pressure reducer • • • • X2
X3 Pressure reducer with size 03 pilot interface • • • • X2
ZD1/ZD3 Dynamic with size 03 pilot interface • • • • • • ZD105, ZDN105
ZDA1/ZDA3 Dynamic with stroke adjuster and size 03 pilot interface • • • • • • ZD105, ZDN105
OD3 Prell valve with size 03 pilot interface • • • • • OD105
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 7
Product Availability Summary - Inserts
Sizes NG-16 to NG-63
Size Cover Most Commonly
Model Type Description 16 25 32 40 50 63 Used With
C025 1:0.25 area ratio • • • • C025
D10 Relief 1:1 area ratio • • • • (S)C, (S)C3
C10F 1:1 area ratio with xed orice • • • • (S)C, (S)C3
D10V 1:1 area ratio with variable orice • • • • (S)C, (S)C3
D10Z Relief 1:1 area ratio -zero leak spool • • • (S)C, (S)C3
C10FZ 1:1 area ratio with xed orice -zero leak spool • • • (S)C, (S)C3
D10VZ 1:1 area ratio with variable orice -zero leak spool • • • (S)C, (S)C3
R10 Damping 1:1 area ratio • • • • (S)C, (S)C3
D105 1:1.05 area ratio • • • • • • A, D3, N
D105V 1:1.05 area ratio with variable orice • • • • • • A, D3, N
D105Z 1:1.05 area ratio -zero leak spool • • • • • A, D3, N
D105VZ 1:1.05 area ratio with variable orice -zero leak spool • • • • • A, D3, N
D15 Directional 1: 1.5 area ratio • • • • • • D3, N, PC, W, W13, W33
DC15 Direct check 1:1.5 area ratio • • • • • • B
R15 Damping 1:1.5 area ratio • • • • • • A, A3, D3, N
F15 Flow control 1:1.5 area ratio • • • • • • A, A3, D3, N
D15Z 1: 1.5 area ratio -zero leak spool • • • • • D3, N, PC, W, W13, W33
U 1:1 Unloading normally closed (sliding spoo) • • • • U, U3
X1 Reducing -Normally open • • • • X, X3
X2 Reducing -Normally closed • • • • X, X3
D20 Directional 1:2 area ratio • • • • • • A, D3, N, PC, W, W13, W33
R20 Damping 1:2 area ratio • • • • • • A, A3, D3, N
F20 Flow control 1:2 area ratio • • • • • • A, A3, D3, N
D20Z Directional 1:2 area ratio -zero leak spool • • • • • A, D3, N, PC, W, W13, W33
OD105 1:1.05 normally open (prell) • • • • • OD
HFV Valvistor proportional throttle HFV • • • • • • HFV
ZD105 Dynamic 1:1.05. zero pilot leakage • • • • • • ZD*, ZDA*
ZDN105 Dynamic 1:1.05., fast response, low hysteresis • • • • • • ZD*, ZDA*
Product Availability Summary - Units
Cartridge Valve Units (CVU-**)
Size
Model Type Description 16 25 32 40 50 63
EFP1 Proportional throttle (two-stage) • • • •
SWD Position monitor switch • • • •
SWD3 Position monitor switch with size 03 pilot interface • • • • • •
ZSWD3 Dynamic position monitor switch with size 03 pilot interface • • • •
Pilot Control Modules (CVG***-3)
Model Type Description
CVGC-3 Relief module: P-T
CVGCA-3 Relief module: A-T
CVGCPA-3 Relief module: P & A-T
CVGMS1-3 Shuttle module
CVGPC1-3 Pilot operated check valve
CVGS1-3 Shuttle valve
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 20128
Functional Symbols - Covers
Cover Type Graphical Symbol Cover Model
Directional with stroke adjuster CVCS-**-A-*-20
Sizes 16-63
CVCS-**-A-*-2(9)-10
Sizes 80-100
Directional with size 03▲ pilot CVCS-**-A3-*-20
interface & stroke adjuster Sizes 16-63
Blank CVCS-**-B-20
Sizes 16-63
Relief CVCS-**-C-*-***-20
(ISO 7368---A) Sizes 16-40
Relief with size 03▲ pilot interface CVCS-**-C3-*-***-20
(ISO 7368---A) Sizes 16-40
■ No orifice/plug tapping on this port on size 16
Directional with size 03▲ pilot CVCS-**-D3-20
interface Sizes 16-63
Dual check valve with size 03▲ pilot CVCS-**-DC3-20
interface Sizes 16-63
Valvistor
®
proportional throttle CVCS-**-HFV*-W-*2(9)-10
For models without free reverse ow capability
CVCS-**-HFV*-*2(9)-10
For models with free reverse ow capability
Sizes 16-63
Directional CVCS-**-N-20
Sizes 16-63
CVCS-**-N-*2(9)-10
Sizes 80-100
Prell CVCS-**-0D-20
Sizes 25-63
Prell with size 03
▲ CVCS-**-0D3-20
pilot interface Sizes 25-63
▲ISO 4401, size 03 (ANSI/B93.7M-D03)
XYZ
1
Z
2
AP
1
AP
2
PA BT
XYAPZ
1
Z
2
XYAPZ
1
PBT
XYAPZ
1
XY
ABPT
Z
1
AP
1
AP
2
Z
2
XY
ABPT
Z
1
AP
1
Z
2
XY
APT
AP
1
XYAP
PA BT
Z
1
Z
2
XY
AP
2
PA BT
Z
2
AP
1
Z
1
XY
PA BT
Z
2
APZ
1
XAP
XAP
■
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 9
Functional Symbols - Covers (continued)
Cover Type Graphical Symbol Cover Model
1:0.25 area ratio CVCS-**-C025-20
Sizes 16-40
Pilot operated check CVCS-**-PC-20
Sizes 16-63
Main system relief CVCS-**-SC-*-***-20
(ISO 7368---B) Sizes 16-40
Main system relief with size 03▲ pilot interface CVCS-**SC3-*-***-20
(ISO 7368---B) Sizes 16-40
■ No orifice/plug tapping on this port on size 16
Unloading/relief CVCS-**-U-*-***-20
Sizes 16-40
Unloading/relief with size 03▲ pilot interface CVCS-**-U3-*-***-20
Sizes 16-40
■ No orifice/plug tapping on this port on size 16
Shuttle CVCS-**-W-20
Sizes 16-63
Shuttle type 1 with size 03▲ pilot interface and CVCS-**-W13-20
W11/W13 function Sizes 16-63
Shuttle type 3 with size 03▲ pilot interface and CVCS-**-W33-20
W31/W33 function Sizes 16-63
Reducer CVCS-**-X-*-***-20
Sizes 16-40
■ No orifice/plug tapping on this port on size 16
Reducer with size 03▲ pilot interface CVCS-**-X3-*-***-20
Sizes 16-40
■ No orifice/plug tapping on this port on size 16
Dynamic with size 03▲ pilot interface See page 69 CVCS-**-ZD*-*2(9)-10
Sizes 16-63
Dynamic with stroke limiter with size 03▲ pilot See page 69 CVCS-**-ZDA*-*2(9)-10
interface Sizes 16-63
▲ISO 4401, size 03 (ANSI/B93.7M-D03)
■
■
■
■
■
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201210
Functional Symbols - Inserts
Insert Type Function Functional Area Ratio Sizes/ Cracking Pressure bar (psi)
Symbol A
A
: A
AP
Insert Model A to B B to A
1:0.25 area ratio C025 1:0.25 Sizes 16-40:
CVI-**-C025-50 N/A – No spring used
Relief, standard D10 1:1 CVI-16-D10-M-50 1.67 (24.2) ▲
CVI-25-D10-H-50 3.34 (48.4) ▲
CVI-32-D10-H-50 3.34 (48.4) ▲
CVI-40-D10-H-50 3.34 (48.4) ▲
■ Zero leak options ‘D10Z’ are available except size 16.
Relief with orice C10F 1:1 CVI-16-C10F-M-50 1.67 (24.2) ▲
CVI-25-C10F-H-50 3.34 (48.4) ▲
CVI-32-C10F-H-50 3.34 (48.4) ▲
CVI-40-C10F-H-50 3.34 (48.4) ▲
■ Zero leak options ‘C10FZ’ are available except size 16.
Directional D10 1:1 Sizes 16-63:
CVI-**-D10-L-50 0.33 (4.8) ▲
CVI-**-D10-M-50 1.67 (24.2) ▲
CVI-**-D10-H-50 3.34 (48.4) ▲
■ Zero leak options ‘D10Z’ are available except size 16.
Directional R10 1:1 Sizes 16-63:
CVI-**-D10-L-50 0.33 (4.8) ▲
CVI-**-D10-M-50 1.67 (24.2) ▲
CVI-**-D10-H-50 3.34 (48.4) ▲
Directional D105 1:1.05 Sizes 16-63:
CVI-**-D105-L-50 0.35 (5.1) ▲
CVI-**-D105-M-50 1.75 (25.4) ▲
CVI-**-D105-H-50 3.5 (50.8) ▲
■ Zero leak options ‘D105Z’ are available except size 16.
Directional D105V 1:1.05 Sizes 16-63:
with orice CVI-**-D105V-L-50 0.35 (5.1) ▲
CVI-**-D105V-M-50 1.75 (25.4) ▲
CVI-**-D105V-H-50 3.5 (50.8) ▲
■ Zero leak options ‘D105VZ’ are available except size 16.
Directional D15 1:1.5 Sizes 16-63:
CVI-**-D15-L-50 0.5 (7.3) 0.75 (10.9)
CVI-**-D15-M-50 2.5 (36.3) 3.75 (54.4)
CVI-**-D15-H-50 5.0 (73) 7.5 (108.8)
■ Zero leak options ‘D15Z’ are available except size 16.
Sizes 80 & 100:
CVI-**-D16-L-1* 0.3 (4.4) 0.48 (7)
CVI-**-D16-M-1* 1.0 (14.5) 1.6 (23.2)
CVI-**-D16-H-1* 2.0 (29) 3.2 (46.6)
Directional D20 1:2 Sizes 16-63:
CVI-**-D20-L-50 0.58 (8.4) 0.58 (8.4)
CVI-**-D20-M-50 3.0 (44.0) 3.0 (44.0)
CVI-**-D20-H-50 5.8 (84.7) 5.8 (84.7)
■ Zero leak options ‘D20Z’ are available except size 16.
Direct check DC15 1:1.5 Sizes 16-63:
CVI-**-DC15-L-50 0.5 (7.3) 0.75 (10.9)
CVI-**-DC15-M-50 2.5 (36.3) 3.75 (54.4)
CVI-**-DC15-H-50 5.0 (73) 7.5 (108.8)
▲D105 and D10 inserts not normally used for flow from ‘‘B’’ to ‘‘A’’.
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 11
Functional Symbols - Inserts (continued)
Insert Type Function Functional Area Ratio Sizes/ Cracking Pressure bar (psi)
Symbol A
A
: A
AP
Insert Model A to B B to A
Flow restricting F 1:1.5 Sizes 16-63:
CVI-**-F-L-50 0.5 (7.3) 0.75 (10.9)
CVI-**-F-M-50 2.5 (36.3) 3.75 (54.4)
CVI-**-F-H-50 5.0 (73.0) 7.5 (108.8)
Flow restricting F 1:1.6 Sizes 80-100:
CVI-**-F-L-1* 0.3 (4.4) 0.48 (7.0)
CVI-**-F-M-1* 1.0 (14.5) 1.6 (23.2)
CVI-**-F-H-1* 2.0 (29.0) 3.2 (46.6)
Flow restricting F 1:2 Sizes 16-63:
CVI-**-F-L-50 0.58 (8.4) 0.58 (8.4)
CVI-**-F-M-50 2.5 (36.3) 2.5 (36.3)
CVI-**-F-H-50 5.0 (73.0) 5.0 (73.0)
Valvistor
®
HFV 1:2 Sizes 16-63:
proportional throttle CVI-**-HFV-20-A-***-1* – –
Sizes 16-63:
CVI-**-HFV-20-B-***-1* – –
Normally open OD105 ♦ Sizes 25-63:
CVI-**-OD105-5* Normally open
Pilot pressure to close:
2,5 (36.3) + P
A
+ 0.05 P
B
Damping R20 1:2 Sizes 16-63:
CVI-**-R-L-5* 0.58 (8.4) 0.58 (8.4)
CVI-**-R-M-5* 3.0 (44.0) 3.0 (44.0)
CVI-**-R-H-5* 5.8 (84.7) 5.8 (84.7)
Damping R15 1:1.5 Sizes 16-63:
CVI-**-R15-L-5* 0.5 (7.3) 0.75 (10.9)
CVI-**-R15-M-5* 2.5 (36.3) 3.75 (54.4)
CVI-**-R15-H-5* 5.0 (73.0) 7.5 (108.8)
Unloading U 1:1 Sizes 16-40:
CVI-**-U-50 3,5 (51.0) –
Reducing X2 & X1 1:1 Sizes 16-40:
CVI-**-X2-50 – 1.8 (26.1)
1:1 Sizes 16-40:
CVI-**-X1-50 1.8 (26.1)
Dynamic, zero pilot ZD105 See page 69 ♦ Sizes 16-63:
leakage CVI-**-ZD105-L-1* 1.0 (14.5) –
CVI-**-ZD105-M-1* 2.5 (36.3) –
CVI-**-ZD105-H-1* 4.5 (62.2) –
Dynamic, fast ZDN105 See page 69 ♦ Sizes 16-63:
response, low CVI-**-ZDN105-L-1* 0.5 (7.3) –
hysteresis CVI-**-ZDN105-M-1* 2.0 (29.0) –
CVI-**-ZDN105-H-1* 4.0 (58.0) –
♦
Spool geometry based on 1:1.05 ratio spools.
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
A
B
B
A
B
A
B
A
B
A
B
A
B
A
B
A
A
B
A
B
A
B
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201212
Introduction to Cartridge Valves
Design Concept
Poppet type valves have been used in hydraulic systems for
many years. They are commonly known as two-port check
valves. In this form, they serve as a one-way valve, allowing
free flow in one direction while blocking flow in the reverse
direction. With some refinements, these valves can be
controlled to overcome the normal blocking action, thereby
allowing control of flow in both directions. This is the basis of
the control concept known as cartridge valves.
Refinements in hydraulic system development have led to
greater use of manifold block construction. Block systems
eliminate a multitude of interconnecting lines between com-
ponents, thereby virtually eliminating potential leakage points
and related oil waste. Inserting the active element of cartridge
valves into standardized cavities in the manifold, and retaining
this insert by a passive block (cover), completes the cartridge
valve concept.
Eaton-Vickers New Design
Eaton-Vickers valves are defined as slip-in cartridge valves to
differentiate them from another type known as screw-in. Gen-
erally, slip-in valves are associated with relatively high flows,
i.e. 150 L/min (40 USgpm) or more. Slip-in cartridge valves,
which will henceforth be referred to simply as cartridge
valves in this catalog, are targeted at more efficient, faster
and more compact hydraulic has developed its cartridge valve
system technology to meet the changing needs of new gen-
erations of hydraulically operated machinery and equipment.
Today’s machines need controls that are exceptionally cost
effective and energy efficient. Eaton-Vickers cartridge valves
fulfill these needs.
Cartridge Valve Advantages
• Systemdesignexibility
• Lowerinstalledcost
• Smallerpackagesize
• Betterperformanceandcontrol
• Improvedreliability
• Higherpressurecapability
• Moreefcientoperation
• Eliminationofexternalleakageandreductionofinternal
leakage
• Greatercontaminationtolerance
• Fastercycletimes
System Design Considerations
Cartridge valves offer an alternative rather than a replace-
ment for conventional sliding spool valves. Often, the most
economical system incorporates combinations of manifold
mounted spool valves and screw-in and slip-in cartridge
valves. Engineers faced with a system design problem should
consider all possibilities before deciding on a particular solu-
tion. Cartridge valve systems will become more cost effective
if some of the following design parameters are significant.
• Flowratesexceeding150L/min(40USgpm)
• Workingpressureabove210bar(3000psi)
• Smallenvelopesize
• Complexcircuitry
• Fastresponse
• Lowinternalleakage
• Goodstability
• Lownoiselevel
Because cartridge valves are two-position valves, a single
valve can control flow between only two major flow points
in a system. Thus, for example, four cartridge valves are
required to replace a typical three position, four-way spool
valve (Figure 1). Operating characteristics of cartridge valves
can be altered easily to fine tune the motions of a machine.
For instance, a cartridge cover can be changed to control
poppet time and travel, thus controlling actuator acceleration
and speed. Shock is easily avoided by carefully sizing orifices
in the valve cover and by timing the opening and closing
sequence of individual cartridges. In conventional spool type
valves, timing of the opening or closing of all four ports oc-
curs simultaneously with less ability to avoid shock.
Conventional spool valves must be sized for the highest flow
at any one port. When differential-area cylinders are used, a
spool valve would probably be sized for the return flow rate
out of the head end of the cylinder. Cartridge valves, on the
other hand, are sized to handle only the flow required through
their individual ports. Economies are realized and the system
is optimized. Cartridge valves are compatible with computer
or programmable controls via electrically modulated pressure
and flow control models. Simple on-off solenoid pilot controls,
as well as air operated types, are also available. The Eaton-
Vickers soft shift pilot valves DG4V-3-****2** (catalog 614)
can also be used to achieve smooth opening and closing.
T
B
A
ba
AB
A
BB
A
A
B
T
AB
Equivalentspool valve
a
AB
b
TP
PT
Figure 1
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 13
Features and Benefits
Features Benefits
Positive-seating check type valving mechanism • Minimum internal valve leakage with little energy waste.
• Improved control of load holding enhances machine performance.
• Higher ow capacity results in more economical valve sizing. (Check type
valve opening area is greater than that of equal port size spool valves.)
• Lower pressure drops with less heat generation provide greater machine
efciency.
• Faster response – up to four times faster than spool type valves – allows
faster machine cycling for greater productivity. Flow begins as soon as the
cartridge check type valve poppet lifts off its seat. (Spool valves must clear
their overlap before ow begins.)
Individual port control • Each cartridge can be tuned to reduce system shock, resulting in smoother
machine operation.
• Each cartridge in a system can be sized for the actual ow encountered,
optimizing component size and cost. (Spool valves must be sized for the
maximum ow seen at any of their ports.) This is a renement over spool type
valves wherein all ports are affected simultaneously by spool movement, and
the demands of one port compromise the others.
Cartridges combine functions of direction, ow and/or pressure • Multi-function reduces the number of valving components required, resulting
in lower machine costs.
Manifold block assemblies that are compact, neat and low in weight • Machine system installation is easier and faster, thereby reducing assembly
costs.
• Piping can be eliminated, providing leak free construction.
• Cartridges can be easily serviced without disturbing system piping, thereby
increasing machine uptime and reducing maintenance time and costs.
Headloss • Eaton-Vickers new “best in class” cartridge valves offer more power efciency.
Flexibility • Components can be individually matched to system requirements.
Serviceability • System can be easily serviced as all valves are surface mounted.
Reliability • Cartridge technology proven over several decades of use.
• All Eaton-Vickers valves undergo full fatigue and endurance tests before
release.
• 350 bar (5000 psi) rating.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201214
Cartridge Valve Design
Construction
Eaton-Vickers cartridge valves are similar to poppet check
valves and consist of an insert assembly that slips into a cav-
ity machined into a manifold. This cavity is made to ISO 7368
or to DIN 24342. The insert is retained in the cavity by a con-
trol cover which is bolted to the manifold. The insert consists
of a sleeve, poppet, spring and seals. Typically, inserts and
covers are supplied separately, e.g. insert model CVI-**-D10
and cover model CVCS-**-C (relief valve) shown in Figure
2. For some functions, inserts and covers are supplied as a
unit (complete assembly); e.g. the CVU-**-EFP1 (proportional
throttle) shown on page 89.
Drilled holes in the manifold connect insert main ports A and
B to other cartridges or to the operating hydraulic system.
Similarly, drilled control lines in the manifold interconnect
control ports X, Z1, and Z2 as desired, see page 123 for port
locations to ISO 7368. Drain port Y is always connected
directly to the reservoir.
Three different spring rates provide a selection of insert pop-
pet cracking pressures. The control cover can also contain
a manual adjustment for limiting poppet lift and flow rate.
Provision is made for the fitting of various orifices to optimize
or tune cartridge valve response in relation to that of the
complete hydraulic system. Some covers have an ISO 4401
size 03 (ANSI/B93.7M-D03) interface for integrally mounting
a pilot directional, or pressure, control valve, (metric thread
mounting bolts). Control functions can be expanded by adding
control modules between the pilot valve and the cover.
Typical single cartridge arrangements are symbolized on
the following pages. Your Eaton-Vickers representative can
illustrate various grouped arrangements. Grouping cartridge
assemblies for control by one or more common pilot valves
can provide directional, check, pressure and/or flow restrictor
functions for flow rates up to 5500 L/min (1450 USgpm) per
cartridge.
Functions
Cartridge valves for directional and check functions are essen-
tially hydraulically piloted check valves. Cartridge relief valves
feature manual pressure setting adjustment. Additionally,
venting and remote piloting are possible. Alternative arrange-
ments include electrical selection of pressure or venting, and
of dual pressure settings and venting, via a pilot valve mount-
ed to the cartridge cover. Electrohydraulic proportional control
of pressure is also available.
Relief valve arrangements described in this catalog can be
built into system manifold assemblies in combination with
directional flow regulating and pressure reducing functions
in cartridge form. The basic pressure reducing cartridge ar-
rangement features manual adjustment of reduced pressure,
plus a pilot port for optional remote control. Options include
electrical selection of high and low pressures, and electrohy-
draulic proportional control of reduced pressure.
Figure 2
Z1
Y
AP
B(T)
Spring
A(P)
Sleeve
Poppet
X
Orifice
YXAPZ2
Z
1
A(P)
B(T)
CVI-**-D10
Insert
CVCS-**-C
Cover
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 15
A cartridge valve is simply a two-port valve that blocks flow,
allows free flow, or modulates flow or pressure. A basic car-
tridge valve insert, Figure 3, consists of a sleeve, spring, and
poppet. The insert has three areas, identified as AA, AB and
AAP , that affect the opening or closing of the valve poppet
relative to the seat in the sleeve. The A-port area is the circu-
lar area defined by the seat diameter. The B-port area is the
annular area between the seat and the outside diameter of
the poppet. Area AP is the circular area defined by the diam-
eter of the poppet. Pressure on the AP area, plus the spring
force, holds the poppet against the seat. Pressure on the AA
and AB areas tends to lift the poppet off the seat, allowing
flow through the valve.
A = Main port
B = Main port
AP = Spring chamber
A
A
= Effective area of port A
A
B
= Effective area of port B (annular)
A
AP
= Area related to poppet diameter
The valve opens and closes in accordance with the force bal-
ance formula:
(P
AP
xA
AP
)+F
S
-(P
A
xA
A
)-(P
B
xA
B
)-F
f
< 0 . . . . . . . . . . . . . . . . . . . Valve opens
> 0 . . . . . . . . . . . . . . . . . . Valve closes
Where:
F
S
= Spring force
F
f
= Flow force
Referring to a 1:1.5 poppet area ratio (AA:AAP), Figure 4, the
poppet will remain closed, thereby blocking flow between
ports A and B as long as pressure in area AAP, plus the spring
force, exceeds pressure on either area AA, annulus AB, or
their combined effect. Flow force (Ff) plays a role when the
valve is open, but will not be covered in this catalog.
Graphic Symbol
Poppet Area Ratios
Figure 4
Figure 3
Spool area ratio
A
A
:A
AP
=1:1.5
A
AP
A
B
A
A
A
B
Sleeve
A
AP
Poppet
Spring
A
A
BPort
APort
Area A
AP
Port “B”
Port “A”
Area A
A
Annular
area A
B
F
S
P
AP
xA
AP
P
B
xA
B
P
A
xA
A
AP
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201216
Eaton-Vickers range of cartridge valves includes five op-
erating area ratios:
•1:2arearatio,whereAAPis2xtheA-portarea,andportsA
and B areas are equal. This valve is used primarily for direc-
tional control.
•1:1.5arearatio,whereAAPis1.5xtheA-portarea.This
valve is used primarily for directional control.
•1:1.05arearatio,whereAAPis1.05xA-portarea.This
valve is used for directional control or pressure control.
•1:1.1arearatio,whereAAPis1.1xA-portarea.Thisvalve
is used for directional control or pressure control.
•1:1arearatio,whereAAPequalstheA-portareaandthe
B-port area is zero. This valve is used for pressure control.
Figure 5 shows area ratio relationships, associated hydraulic
symbols, and related model codes.
The reducer insert, Figure 6 and Figure 7, differs from other
inserts in that it has a spool type valving mechanism, rather
than poppet type, and has an integral check valve to relieve
surge pressures in the reduced pressure A (load) port. The
reducer insert is available normally open and normally close
configurations. The normally closed i.e. the spool tends to
widen the hole opening in the sleeve with increased load
pressure at port A. Flow is always from port B to port A. The
normally open i.e. spool tends to close the hole opening in
the sleeve with increased load pressure of port A. Flow is
always from port B to port A.
Unlike most reducing valves, pilot pressure is obtained from
high-pressure port B rather than from reduced pressure port
A, thus providing significantly more flow capacity.
Poppet Area Ratios
Figure 7
Figure 5
Figure 6
Load port A
Load port A
Pressure
port B
Pressure
port B
Z
1
Z
1
CVI-**-X2
Insert
CVCS-**- X
Cover
Symbols as used in this catalog
Symbol showing circuitryof
normally-closedreducer insert
XAPY
B(P1)A(P2)
XAPY
B(P1)
A(P2)
A
B
A
B
Model:
CVI-**-D10
AP
A
B
Model:
CVI-**-D105
AP
A
B
Model:
CVI-**-D15
AP
Area ratio
A
A
:A
AP
=1:1
Area ratio
A
A
:A
AP
=1:1.05
Area ratio
A
A
:A
AP
=1:1.5
A
A
A
A
A
A
A
B
A
B
A
AP
A
AP
A
AP
Model
CVI-**-D105V
A
B
Model
CVI-**-R15
A
B
Model
CVI-**-DC15
A
B
Model
CVI-**-R10
with damping
1:1.51:1.5
with direct check
1:1
with dampening
1:1.05
with orifice
1:1with
fixed orifice
A
B
Model
CVI-**-C10F
Area ratio
A
A
:A
AP
=1:2
A
A
A
B
A
AP
A
B
Model:
CVI-**-D20
AP
Z
1
Z
1
CVI-**-X2
Insert
CVCS-**- X
Cover
Symbols as used in this catalog
Symbol showing circuitryof
normally-closedreducer insert
XA
PY
B(P1
)A
(P2)
XAPY
B(P1)
A(P2)
A
B
A
B
Model:
CVI-**-D10
AP
A
B
Model:
CVI-**-D105
AP
A
B
Model:
CVI-**-D15
AP
Area ratio
A
A
:A
AP
=1:1
Area ratio
A
A
:A
AP
=1:1.05
Area ratio
A
A
:A
AP
=1:1.5
A
A
A
A
A
A
A
B
A
B
A
AP
A
AP
A
AP
Model
CVI-**-D105V
A
B
Model
CVI-**-R15
A
B
Model
CVI-**-DC15
A
B
Model
CVI-**-R10
with damping
1:1.51:1.5
with direct check
1:1
with dampening
1:1.05
with orifice
1:1with
fixed orifice
A
B
Model
CVI-**-C10F
Area ratio
A
A
:A
AP
=1:2
A
A
A
B
A
AP
A
B
Model:
CVI-**-D20
AP
Z
1
Z
1
CVI-**-X1
Insert
CVCS-**- X
Cover
Symbols as used in this catalog
Symbol showing circuitryof
normally-open reducerinsert
XA
PY
B(P1
)A
(P2)
XAPY
B(P1)
A(P2)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 17
Applications, Ratings and Characteristics
Applications
Cartridge valves are generally used in medium to high pres-
sure hydraulic systems, where flows may be greater than 150
L/min (40 USgpm), to provide power transmission and motion
control in a wide variety of applications.
•Presses
•Plasticsmoldingmachines
•Diecastingmachines
•Shearsandbalers
•Machinetoolsandmetalformingmachinery
•Steelmillmachineryandotherprimarymetalprocessing
equipment
•Mobilevehicles
•Marine
Response Time
Response time is generally faster than that of large spool type
valves which have to clear their overlap before flow starts.
With cartridge valves, flow starts as soon as the poppet starts
to lift off the seat in the cartridge sleeve. A typical DG4V-3
solenoid operated pilot valve starts to pass pilot flow about
10 ms after it is energized. Full opening time of the cartridge
valve depends on the operating pressure and the control
orifice size used. Sizing of control orifices is key to tuning the
relative response of each cartridge unit. A guide to orifice siz-
ing is on page 118.
Temperature Limits
Ambient min. . . . –20 C (–4 F)
Ambient max. . . +70 C (+158 F)
Fluid temperatures:
Petroleum oil Water-containing
Min. –20 C (–4 F) +10 C (+50 F)
Max. +80 C +54 C (+129 F)
(+176 F)
Viscosity
The extreme viscosity range is from 500 to 5 cSt (2270 to 42
SUS) but the recommended running range is from 54 to 13
cSt (245 to 70 SUS).
Fluids and Seals
Sizes 16 to 63
All seals are Buna-N. Water glycol, water-in-oil emulsion fluids
and petroleum oil may be used with these standard seals.
The use of synthetic fire-resistant fluids requires a valve with
special seals. Add prefix “F3” to the model code when phos-
phate ester type fluids or their blends are to be used. Alkyl-
based or chlorinated hydrocarbon fluids are not to be used.
Sizes 80 and 100
Fluorocarbon seals (F3) are standard. These are compatible
with water glycol, water-in-oil emulsion fluids, petroleum oil
and synthetic fire-resistant fluids. Alkyl-based or chlorinated
hydrocarbon fluids are not to be used.
All Sizes
Cartridges may be used up to 70 bar (1000 psi) with high
water base (5/95) fluids. For higher pressures, consult your
Eaton-Vickers representative. Contact your fluid supplier for
seal recommendations.
Mounting Attitude
Unrestricted for cartridges. Good practice suggests that
detented pilot valves, e.g. DG4V-3-2N models, be mounted so
that their longitudinal axis is horizontal.
Ratings
See chart below. Nominal flow rate at 5 bar (72 psi) pressure
drop for insert types:
C10F, D10, D10V for sizes 06-10 (NG16-40)
D10 for sizes 11 and 12 (NG50 & 63)
D16 for sizes 13 and 14 (NG80 & 100)
Nominal Size ▲ Flow Maximum Operating
ISO 7368 (DIN 24342) L/min USgpm Pressure
06 (NG16) (approx. 5/8”) 255 67 350 bar (5000 psi)
08 (NG25) (approx. 1”) 590 155 350 bar (5000 psi)
09 (NG32) (approx. 1 1/4”) 1250 330 350 bar (5000 psi)
10 (NG40) (approx. 1 9/16”) 1700 450 350 bar (5000 psi)
11 (NG50) (approx. 2”) 2350 620 350 bar (5000 psi)
12 (NG63) (approx. 2 1/2”) 3650 965 350 bar (5000 psi)
▲ Nominal size relates to drilled hole (port size) in manifold that connects one cartridge to another.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201218
Applications, Ratings and Characteristics
Orifices
Throughout this catalog, graphical symbols are used to
describe the function of the cartridge cover and inserts. By
changing orifice sizes or adding or deleting them, a cartridge
can be fine tuned to achieve desired machine operation.
Figure 8 shows a sample graphical symbol with orifices
described. Standard orifice sizes and optional orifice kits are
shown on pages 116 and 117.
>< Standard (factory-fitted) orifice
Tapped port for installation of optional orifice
Plugged port
Figure 8
Maximum Internal Leakages
Fluid viscosity 36 cSt (168 SUS) Data for sizes 80 and 100 on
request.
Metric Design
Covers in new version are universal design and are with met-
ric pilot interface and orifices. Blanking plugs are with SAE
threads.
For versions: HFV, ZD, ZDA
Covers: covers type CVC(S)-**-*1(or *2) have UNC/UNF
threads for pilot valve mounting bolts and orifice/closure plugs
with SAE gauge ports if applicable.
Leakage
Excepting pressure reducing and unloader cartridge inserts,
which have spool type construction, inserts are designed with
a positive-seating poppet mechanism. Therefore, there is
virtually no leakage between ports A and B when the poppet
is held in the closed position (Figure 2, page 14). However,
leakage can pass through the diametral clearance between
area AP and port B.
Leakage should be considered when designing circuits;
see graph for maximum leakages. Proper orientation of the
cartridge and pilots can yield very low internal leakage in
systems.
0
50
100
150
200
250
300
350
400
05
CVI-63
0
CVI-50
CVI-40
CVI-32
CVI-25
CVI-16
0 100 150 200 250 300 350
Pressure
Leakage rate
10
15
0 1000 2000 3000 4000 5000
20
25
5
in
3
/min cm
3
/min
bar
psi
A
B
AP
YX
P
P
A
A
B
B
b
T
T
Z
2
Z
1
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 19
Filtration and Viscosity Requirements
Essential information on the correct methods for treating
hydraulic fluid is included in the Eaton-Vickers publication 03-
401-2010 “Eaton-Vickers Guide to Systemic Contamination
Control”, available from your local Eaton-Vickers distributor or
by contacting Eaton-Vickers. Recommendations on filtration
and the selection of products to control fluid condition are
included in Eaton-Vickers publication 03-401-2010.
Recommended cleanliness levels using petroleum oil under
common conditions are based on the highest fluid pressure
levels in the system. In referencing the table below, the
shaded areas highlight the recommended cleanliness level for
cartridge valves and proportional throttles. Fluids other than
petroleum, severe service cycles or temperature extremes
are cause for adjustment of these cleanliness codes. See
Eaton-Vickers publication 03-401-2010 for exact details.
Maximum ISO 4406:99
Minimum Optimum Allowed Cleanliness
Product Line Range Range Startup Requirements Comments
Heavy-Duty Piston *45 SUS 60-180 SUS 10,000 SUS 21/18/13
Pumps and Motors (6 cSt) (10-39 cSt) (2158 cSt)
Medium-Duty Piston *45 SUS 60-180 SUS 10,000 SUS 21/18/13
Pumps and Motors Charged Systems (6 cSt) (10-39 cSt) (2158 cSt)
Medium-Duty Piston
Pumps and Motors *45 SUS 60-180 SUS 2,000 SUS 21/18/13
Non-Charged Systems (6 cSt) (10-39 cSt) (432 cSt)
Light-Duty Transaxles
Transmission, Pumps * 60 SUS 82-180 SUS 10,000 SUS 21/18/13
and Series 1150 Transaxles (10 cSt) (16-39 cSt) (2158 cSt)
Char-Lynn
®
J,R,T and
S Series Motors, Disc *70 SUS 100-200 SUS 10,000 SUS 20/18/13
Valve Motors and VIS Motors (13 cSt) (20-43 cSt) (2158 cSt)
Char-Lynn A Series and *100 SUS 100-200 SUS 10,000 SUS 20/18/13
H Series Motors (20 cSt) (20-43 cSt) (2158 cSt)
When emergency
manual steering is
required, maximum
Char-Lynn Steering *55 SUS 100-200 SUS 8,000 SUS 20/18/13 viscosity is 2000
Control Units (9 cSt) (20-43 cSt) (1900 cSt) SUS {450 cSt}
Gear Pumps, Motors *45 SUS 60-200 SUS 10,000 SUS 20/18/13
and Standard Cylinders (6 cSt) (10-43 cSt) (2158 cSt)
Global Gear (A-AI) 52 SUS 82-185 SUS 8800 SUS 20/18/13
Products (8 cSt) (16-40 cSt) (2000 cSt)
Vane Pumps 60 SUS 82-188 SUS 4000 SUS) 18/16/13
(Industrial) (10 cSt) (16-40 cSt) (860 cSt
Vane Pumps 47 SUS 82-188 SUS 8800 SUS 18/16/13
(Mobile) (6.5 cSt) (16-40 cSt) (2000 cSt)
Open-Circuit Piston 60 SUS 82-188 SUS 4550 SUS 21/18/13
Pumps PVM, PVH, PVE (10 cSt) (16-40 cSt) (1000 cSt)
Open-Circuit Piston 60 SUS 82-188 SUS 1000 SUS 21/18/13
Pumps pya, PVB (10 cSt) (16-40 cSt) (220 cSt)
Open-Circuit 60 SUS 82-188 SUS 9720 SUS 21/18/13
Piston Pumps 420 (10 cSt) (16-40 cSt) (2100 cSt)
Hydrokraft ™ Pumps 60 SUS 82-349 SUS 4550 SUS 18/15/13
PVW, PFW, PYX, PFX,lVX, TVW (10 cSt) (16-75 cSt) (1000 cSt)
Hydrokraft Motors 60 SUS 82-349 SUS 4550 SUS 18/15/13
MVX, MFX, MVW, MFW (10 cSt) (16-75 cSt) (1000 cSt)
*Minimum viscosity applies at intermittent condition of 10% of every minute.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201220
Maximum ISO 4406:99
Minimum Optimum Allowed Cleanliness
Product Line Range Range Startup Requirements Comments
Directional 45 SUS 100-200 SUS 10,000 SUS 19/17/14
Valves (DG) (6 cSt) (20-43 cSt) (2158 cSt)
STAK Valves 45 SUS 100-200 SUS 10,000 SUS 17/15/12
(6 cSt) (20-43 cSt) (2158 cSt)
Cartridge Valves 45 SUS 100-200 SUS 10,000 SUS 19/17/14
(6 cSt) (20-43 cSt) (2158 cSt)
K Series Proportional 45 SUS 100-200 SUS 10,000 SUS) 17/15/12
(Directional/Throttle ) (6 cSt) (20-43 cSt) (2158 cSt
DG, eM and Mono 45 SUS 100-200 SUS 10,000 SUS 20/18/15
Block Directional Control Valves (6 cSt) (20-43 cSt) (2158 cSt)
CMX and CML 45 SUS 100-200 SUS 10,000 SUS 18/16/14
Proportional Control Valves (6 cSt) (20-43 cSt) (2158 cSt)
KDG Proportional 70 SUS 100-250 SUS 2300 SUS 17/15/12
Control Valves (13 cSt) (20-54 cSt) (500 cSt)
Pressure and Flow 45 SUS 100-200 SUS 10,000 SUS 19/17/14
Control Valves (6 cSt) (20-43 cSt) (2158 cSt)
Servo Valves 45 SUS 100-250 SUS 10,000 SUS 16/14/11 15/13/10 is
(6 cSt) (20-54 cSt) (2158 cSt) is recommended
for longer life
Filtration and Viscosity Requirements (continued)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 21
Check, Directional and Flow Restrictor
Functions Sizes 16 to 63
General Information
Cartridge valves for directional and check functions are es-
sentially hydraulically piloted check valves. Control options
include single or multiple pilot arrangements, flow restrictors,
and solenoid controlled, pilot operated directional control.
Grouping cartridge assemblies (selected individually according
to flow requirements) for control by one or more common pi-
lot valves can provide directional, check and/or flow restrictor
functions for normal flow rates up to 3650 L/min (965 US-
gpm) per cartridge. Typical single cartridge arrangements are
symbolized on the following pages, and your Eaton-Vickers
representative can illustrate various grouped arrangements.
Basic poppets are illustrated. Others provide flow restrictions
between ports A and B and internal pilot orificing between
port A and spring chamber AP. Poppets can be combined
with different springs to provide three different cracking pres-
sures. Standard combinations are shown in the inserts model
code on page 28.
Pressure Ratings
Maximum pressure allowable at ports A and B is 350 bar
(5000 psi) for all cartridges. Minimum pressure is 0,3 to 5 bar
(4.4 to 72 psi), dependent on the poppet/spring combination.
See inserts model code on page 28. The maximum pressure
limit at pilot ports X, Z1, Z2 and AP and pilot valve interface
ports P, T, A and B is generally 350 bar (5000 psi), dependent
on the limit of any associated pilot valve or module.
Pilot port Y maximum pressure limit is also 350 bar (5000
psi). However, port Y is normally used as the pilot drain port,
when it should be connected directly to the reservoir. In many
functions any pressure at port Y is additive to the set opening/
cracking pressure of the cartridge.
Remote Pilot Operated Functions
Remote piloted arrangements (pilot not integrally mounted on
cartridge cover) require the application of pilot flows and pres-
sures appropriate to the application and within the limits of
any associated pilot valves and modules, whichever have the
lower limits. See pilot operated check valve information, page
22. Pilot Control Modules Details of CVG***-3 pilot control
modules are shown on pages 112-115.
Solenoid Operated, Hydraulically Piloted Arrangements
For full technical data of pilot valves see appropriate Eaton-
Vickers catalog:
Nominal Nominal flow at Nominal flow at
Size Δ p = 1 bar Δ p = 5 bar
ISO 7368 (DIN 24342) L/min USgpm L/min USgpm
06 (NG16) 128 34 255 67
08 (NG25) 250 66 590 155
09 (NG32) 300 80 1250 330
10 (NG40) 500 132 1700 450
11 (NG50) 850 225 2350 620
12 (NG63) 1400 370 3650 965
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201222
Check Valve Functions
Basic Check Valve: Sizes 16 to 63
The standard directional cover (model code letter N), contains
a pilot pressure passage with an orifice to control the pop-
pet’s opening and closing rate. When used with insert model
D15 (1:1.5 area ratio poppet), or model D20 (1:2 area ratio
poppet), the combined cover and insert, Figure 9, becomes a
check valve. Port X in the cover is connected to port B in the
insert. This allows free flow from insert port A to port B while
blocking flow from B to A.
Direct Acting Check: Sizes 16 to 63
The type DC15 insert is used with the type B cover to provide
a direct check function, Figure 10. The free flow direction is
A to B. Flow in the opposite direction (B to A) is prevented by
connecting port B to the full poppet area AAP, via drilled holes
on the poppet, whereby any pressure at port B assists the
spring in holding the poppet hard on to its seat.
Pilot Operated Check Valve (Pilot Open): Sizes 16 to 63
A model PC cover can be combined with a model D15 insert
to form a pilot operated check valve (Figure 11). Pilot pressure
at Z1 vents spring chamber AP to Y, permitting flow from B
to A. Flow from A to B is independent of pilot pressure. With
port B connected to the system load, pilot pressure at Z1
must be at least 30% of load pressure, the latter including
any intensification that may occur such as when controlling
double-acting cylinders. Port Y is normally connected to a
drain line.
X
B
A
X
X
AP
Y
Z1
B
A
Basic poppet
Basic poppet
Basic poppet
Index to Functional Descriptions on
Following Pages
Page
Basic check valve using type N cove ............................................................................................................................................ 22
Direct-acting check valve using type B cover ............................................................................................................................... 22
Pilot operated check valve ............................................................................................................................................................ 22
2-way, 2-position, bi-directional control ........................................................................................................................................ 23
2-way, 2-position, uni-directional control ...................................................................................................................................... 23
Damping function ......................................................................................................................................................................... 23
Pilot shuttle control ....................................................................................................................................................................... 23
Adjustable stroke limiter; bi-directional control ............................................................................................................................. 26
Adjustable stroke limiter; uni-directional control ........................................................................................................................... 26
Solenoid controlled, pilot operated models
2-way, 2-position; single- and double-solenoid control; sizes 16 to 40 ......................................................................................... 24
Shuttle type 1 (cover types W13) ................................................................................................................................................. 25
Shuttle type 3 (cover types W33) ................................................................................................................................................. 25
Dual check (cover types DC3) ...................................................................................................................................................... 25
Adjustable stroke limiter; bi-directional control ............................................................................................................................. 26
A
A
A
AP
=1:1.5 or
A
A
A
AP
=1:2
A
A
A
AP
=1:1.5
A
A
A
AP
=1:1.5
Figure 9
Figure 10
Figure 11
A
B
X
AP
CVI-**-D15 ,or
CVI-**-D20
Insert
CVC(S)-**- N
Cover
CVI-**-D15
Insert
CVCS-**- PC
Cover
A
B
XAP YZ
1
A
B
CVI-**-DC15
Insert
CVCS-**-B
Cover
A
B
X
AP
CVI-**-D15 ,or
CVI-**-D20
Insert
CVC(S)-**- N
Cover
CVI-**-D15
Insert
CVCS-**- PC
Cover
A
B
XAP YZ
1
A
B
CVI-**-DC15
Insert
CVCS-**-B
Cover
A
B
X
AP
CVI-**-D15 ,or
CVI-**-D20
Insert
CVC(S)-**- N
Cover
CVI-**-D15
Insert
CVCS-**- PC
Cover
A
B
XAP YZ
1
A
B
CVI-**-DC15
Insert
CVCS-**-B
Cover
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 23
2-Way, 2-Position Function:
Sizes 16 to 63
Using a model N cover with a D15 insert, Figure 12, can pro-
vide directional control of flow from insert port A to B or from
B to A. Pressurizing port X from a remote source will block
flow from insert port A and B. With X connected to B, system
flow is from A to B. Flow will be from B to A if X is connected
to tank or A.
2-Way, 2-Position Function (With Internal Pilot):
Sizes 16 to 63
A model N cover is used with a D105 insert (1:1.05 area ratio)
which can be supplied with an orifice in the poppet. See
Figure 13. This configuration is used to open A to B or block A
to B. D105 poppets cannot be used for flow from B to A. The
orifice avoids the need to machine a connecting hole in the
manifold to port A. To obtain a D105 insert with an orifice in
the poppet (i.e. D105V), the orifice size must be specified at
the end of the insert model number.
Damping Function: Sizes 16 to 63
Damping can be achieved with a model R15 insert (area ratio 1:1.5)
and R20 (area ratio 1:2), see Figure 14. The poppet has a skirt with
a damping notch which helps smooth shifting (reduces gain) of the
poppet. R15/R20 inserts may be used with any check or directional
function where a D15/D20 insert is ordinarily used.
Pilot Shuttle Control: Sizes 16 to 63
The shuttle function is obtained with a model W cover and
D15 insert (Figure 15). The shuttle directs the higher of the
pressures at the X and Z1 ports to the spring area (AP) of the
insert poppet to close it. The Z2 port can be used as a conve-
nience to operate another cartridge simultaneously.
A
B
CVI-**-R15
Insert
CVCS-**- N
Cover
A
B
XAP
XAP
CVCS-**-N
Cover
CVI-**-D105V
Insert
A
B
XAP
CVI-**-R15/R20
Insert
CVCS-**- N
Cover
CVCS-**- W
Cover
X
2
ZZ
1
A
B
CVI-**-D15
Insert
Sizes16to40
A
B
XAP
AP
CVI-**-R
Insert
CVC(S)-**- N
Cover
Sizes50and 63
A
B
CVI-**-R15
Insert
CVCS-**- N
Cover
A
B
XAP
XAP
CVCS-**-N
Cover
CVI-**-D105V
Insert
A
B
XAP
CVI-**-R15/R20
Insert
CVCS-**- N
Cover
CVCS-**- W
Cover
X
2
ZZ
1
A
B
CVI-**-D15
Insert
Sizes16to40
A
B
XAP
AP
CVI-**-R
Insert
CVC(S)-**- N
Cover
Sizes50and 63
Directional Valve Functions
Basic poppet
Area ratio
A
A
:A
AP
=1:1.5
Basic poppet
Area ratio
A
A
:A
AP
=1:1.05
Basic poppet
Area ratio
A
A
:A
AP
=1:1.5
Basic poppet
Sizes 16 to 63: A
A
:A
AP
=1:1.5
A
A
:A
AP
=1:2
X
B
A
X
B
A
B
A
X
Z1
X
B
A
Basic poppet
Area ratio
A
A
:A
AP
=1:1.5
Basic poppet
Area ratio
A
A
:A
AP
=1:1.05
Basic poppet
Area ratio
A
A
:A
AP
=1:1.5
Basic poppet
Sizes 16 to 63: A
A
:A
AP
=1:1.5
A
A
:A
AP
=1:2
X
B
A
X
B
A
B
A
X
Z1
X
B
A
Basic poppet
Area ratio
A
A
:A
AP
=1:1.5
Basic poppet
Area ratio
A
A
:A
AP
=1:1.05
Basic poppet
Area ratio
A
A
:A
AP
=1:1.5
Basic poppet
Sizes 16 to 63: A
A
:A
AP
=1:1.5
A
A
:A
AP
=1:2
X
B
A
X
B
A
B
A
X
Z1
X
B
A
Basic poppet
Area ratio
A
A
:A
AP
=1:1.5
Basic poppet
Area ratio
A
A
:A
AP
=1:1.05
Basic poppet
Area ratio
A
A
:A
AP
=1:1.5
Basic poppet
Sizes 16 to 63: A
A
:A
AP
=1:1.5
A
A
:A
AP
=1:2
X
B
A
X
B
A
B
A
X
Z1
X
B
A
Figure 12
Figure 13
Figure 14
Figure 15
A
B
CVI-**-R15
Insert
CVCS-**- N
Cover
A
B
XAP
XAP
CVCS-**-N
Cover
CVI-**-D105V
Insert
A
B
XAP
CVI-**-R15/R20
Insert
CVCS-**- N
Cover
CVCS-**- W
Cover
X
2
ZZ
1
A
B
CVI-**-D15
Insert
Sizes16to40
A
B
XAP
AP
CVI-**-R
Insert
CVC(S)-**- N
Cover
Sizes50and 63
A
B
CVI-**-R15
Insert
CVCS-**- N
Cover
A
B
XAP
XAP
CVCS-**-N
Cover
CVI-**-D105V
Insert
A
B
XAP
CVI-**-R15/R20
Insert
CVCS-**- N
Cover
CVCS-**- W
Cover
X
2
ZZ
1
A
B
CVI-**-D15
Insert
Sizes16to40
A
B
XAP
AP
CVI-**-R
Insert
CVC(S)-**- N
Cover
Sizes50and 63
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201224
Pilot Operated Directional Valves
Sizes 16 to 63
Covers are available with mounting interfaces for pilot valves.
These pilots are typically the DG4V-3(S) solenoid operated
directional valve that mounts to the ISO 4401, size 03 (ANSI/
B93.7M-D03) interface. Manually operated DG17V-3, pilot
operated DG3V-3, or air operated DG18V-3 pilots are also
applicable. The Eaton-Vickers soft shift pilot valves DG4V-3-
****2** can also be used to achieve smooth opening and
closing.
Single or dual solenoid pilots are applicable (Figure 16),
depending on circuit requirements. The spool center condi-
tion of the solenoid pilots also depends on the circuit function
desired. Ports Z1 and Z2 are for remote control of additional
cartridges. That is, for D3 covers, Z1 is connected to pilot
port A. The X port is the pilot pressure port. The Y port should
always go directly to the reservoir. The insert used can be
either the model D15 (1:1.5 area ratio poppet), or model D20
(1:2 area ratio poppet).
Dual Solenoid Control: Sizes 16 to 63
3-position, spring centered pilot valve
Single Solenoid Control: Sizes 16 to 63
2-position, spring offset pilot valve
Note that the circuitry (i.e. flow path and orifice locations) of these 16 to 40 sizes is differ-
ent from that of sizes 50 and 63 shown on the next page.
Figure 16
Z2
Z1
B
A
DG4V-3(S)-C
Pilot valve
(Dual solenoid)
CVCS-**-D3
Cover
CVI-**-D15 or
CVI-**-D20
Insert
Area ratio
A
A
:A
AP
=1:1.5 or
A
A
:A
AP
=1:2
X
Y
AB
P
T
Z
1
AP
1
AP
2
Z
2
P
T
BA
b
A
B
a
CVI-**-D15 or
CVI-**-D20
Insert
CVCS-**-D3
Cover
DG4V-3-*C
Pilo tvalve
XY
A
B
P
T
Z
1
AP
1
AP
2
Z
2
P
T
B
A
b
A
B
CVI-**-D15 or
CVI-**-D20
Insert
CVCS-**-D3
Cover
DG4V-3-*A
Pilotvalve
X
Y
AB
P
T
Z
1
AP
1
AP
2
Z
2
P
T
BA
b
A
B
a
CVI-**-D15 or
CVI-**-D20
Insert
CVCS-**-D3
Cover
DG4V-3-*C
Pilo tvalve
XY
A
B
P
T
Z
1
AP
1
AP
2
Z
2
P
T
B
A
b
A
B
CVI-**-D15 or
CVI-**-D20
Insert
CVCS-**-D3
Cover
DG4V-3-*A
Pilotvalve
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 25
Pilot Operated Directional Valves with
Shuttle Function
General Information
The shuttle function in combination with a solenoid operated
pilot valve is available in cartridge sizes 16 through 40. In each
cartridge size, the pilot valve is the DG4V-3 that mounts to
the ISO 4401, size 03 (ANSI/B93.7M-D03) interface. There
are two functional cover types, W13 and W33, that are ap-
plied with a model DG4V-3 pilot valve. The insert used can be
either the model D15 (1:1.5 area ratio poppet), or model D20
(1:2 area ratio poppet).
Shuttle Type 1 (W13 Cover): Sizes 16 to 63
With the solenoid de-energized, Figure 17, the cartridge is
shut by the higher of the pressures at X or Z
1
. Pilot port Z
2
can
be used to pilot a second cartridge simultaneously.
Shuttle Type 3 (W33 Cover): Sizes 16 to 63
The function of the W33 cover, Figure 18, is to provide a non-
reverse-flow check, thereby eliminating the need for a separate back
flow check. Flow is either blocked or allowed from port B to port A.
Flow from port A to port B is always blocked. The application would
have pump flow going into port B, port A connected to the actuator
and control port X connected to port A.
Dual Check (DC3 Cover): Sizes 16 to 63
The DC3 cover, Figure 19, provides parallel check functions in
pilot control ports X and Z1. The higher of these two pres-
sures is then available at pilot port P to close the insert via the
size 03 solenoid operated valve. A second cartridge can be
operated simultaneously from pilot port Z2.
The DC3 cover is similar to the type W13 cover but, whereas
there is an open transient condition in the shuttle function
(type W13), the DC3 design uses two check valves to ensure
that no transient loss of pressure in port P can occur during
pilot pressure change-over between ports X and Z1. This
feature is of benefit in any application where there must be
absolutely no risk of the cartridge even momentarily opening
during pilot pressure changeover.
X
X
Z1
Y
X
Z1
A
B
P
B
A
B
A
X
X
Z1
Y
X
Z1
A
B
P
B
A
B
A
X
X
Z1
Y
X
Z1
A
B
P
B
A
B
A
Figure 17
Figure 18
Figure 19
X AP YZ
1
Z
2
AB
PT
P
T
BA
b
A
B
CVI-**-D15 or
CVI-**-D20
Insert
CVCS-**- W13
Cover
DG4V-3-* A
Pilotvalve
X AP YZ
1
ABPT
P
T
BA
b
A
B
CVI-**-D15 or
CVI-**-D20
Insert
CVCS-**- W33
Cover
DG4V-3-* A
Pilotvalve
X YAPZ
1
Z
2
A
B
CVI-**-D15 or
CVI-**-D20
Insert
CVCS-**-DC3
DC3 Cover
DG4V-3-* A
Pilotvalve
A
B
P
T
P
T
BA
b
X AP YZ
1
Z
2
AB
PT
P
T
BA
b
A
B
CVI-**-D15 or
CVI-**-D20
Insert
CVCS-**- W13
Cover
DG4V-3-* A
Pilotvalve
X AP YZ
1
ABPT
P
T
BA
b
A
B
CVI-**-D15 or
CVI-**-D20
Insert
CVCS-**- W33
Cover
DG4V-3-* A
Pilotvalve
X YAPZ
1
Z
2
A
B
CVI-**-D15 or
CVI-**-D20
Insert
CVCS-**-DC3
DC3 Cover
DG4V-3-* A
Pilotvalve
A
B
P
T
P
T
BA
b
X AP YZ
1
Z
2
AB
PT
P
T
BA
b
A
B
CVI-**-D15 or
CVI-**-D20
Insert
CVCS-**- W13
Cover
DG4V-3-* A
Pilotvalve
X AP YZ
1
ABPT
P
T
BA
b
A
B
CVI-**-D15 or
CVI-**-D20
Insert
CVCS-**- W33
Cover
DG4V-3-* A
Pilotvalve
X YAPZ
1
Z
2
A
B
CVI-**-D15 or
CVI-**-D20
Insert
CVCS-**-DC3
DC3 Cover
DG4V-3-* A
Pilotvalve
A
B
P
T
P
T
BA
b
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201226
General Information
Flow control is by means of a standard cover with a stroke
adjuster which limits the stroke of any of the inserts and
thereby limits the flow.
Size 16 to 63
The R10 insert (1:1), R15 insert (1:1.5), R20 insert (1:2) has a
notch for fine metering (reduced gain) flow control function.
The F15 & F20 inserts has a larger notch for more coarse
metering (high gain) flow control function.
The A insert stroke adjuster cover is available with three
types of adjusters, micrometer (M), micrometer with keylock
(K) & standard square end screw with hex. locknut (W).
Adjustable Stroke Limiter and Directional Functions:
Sizes 16 to 63
The adjustable limiting of the insert poppet opening restricts flow in
both directions (A to B and B to A). Control is from pilot port X. See
Figure 20.
Sizes 16 to 63
Figure 20
Adjustable Stroke Limiter and Check Functions:
Sizes 16 to 63
The adjustable poppet lift limiter restricts flow from A to B.
The check function prevents flow from B to A. The X pilot
port of the cover is connected to the B port of the insert. See
Figure 21.
Sizes 16 to 63
Adjustable Stroke Limiter and Pilot (Directional) Function:
Sizes 16 to 63
Stroke limiters are available with an ISO 4401, size 03 (ANSI/
B93.7M-D03) interface for mounting a single-solenoid con-
trolled DG4V-3(S) pilot valve. These type A3 covers are
supplied configured for a “normally open” function, i.e. the
insert poppet is vented when the solenoid of the pilot valve is
de-energized (with pilot pressure applied to port X).
The opposite, “normally closed” (NC) function, can be ob-
tained by interchanging the orifice and plug in ports AP1/AP2.
With this arrangement, the insert poppet is “normally closed”
(NC) and is open when the solenoid of the pilot valve is ener-
gized (with pilot pressure applied to port X).
Stroke Limiter Control Functions
XAP
A
B
CVI-**-R16
Insert
CVCS-**- A
Cover
XAP
CVI-**-R16
Insert
CVCS-**- A
Cover
A
B
XAP
A
B
CVI-**-F or
CVI-**-R
Insert
CVC(S)-**- A
Cover
XAP
CVI-**-F or
CVI-**-R
Insert
CVC(S)-**-A
Cover
A
B
XYZ
1
Z
2
AP
1
AP
2
A B
A B
P
T
P
T
BA
b
CVCS-**-A3
Coverassupplied
DG4V-3-*A
Pilotvalve
A
B
CVI-**-R15
Insert
Normally Open Function
XYZ
1
Z
2
AP
1
AP
2
P
T
P
T
BA
b
CVCS-**-A3
Cover
DG4V-3-*A
Pilotvalve
A
B
CVI-**-F*
CVI-**-R*
Inserts
A
B
X
B
A
X
B
A
NormallyClosed Function
XAP
A
B
CVI-**-R16
Insert
CVCS-**- A
Cover
XAP
CVI-**-R16
Insert
CVCS-**- A
Cover
A
B
XAP
A
B
CVI-**-F or
CVI-**-R
Insert
CVC(S)-**- A
Cover
XAP
CVI-**-F or
CVI-**-R
Insert
CVC(S)-**-A
Cover
A
B
XYZ
1
Z
2
AP
1
AP
2
A B
A B
P
T
P
T
BA
b
CVCS-**-A3
Coverassupplied
DG4V-3-*A
Pilotvalve
A
B
CVI-**-R15
Insert
Normally Open Function
XYZ
1
Z
2
AP
1
AP
2
P
T
P
T
BA
b
CVCS-**-A3
Cover
DG4V-3-*A
Pilotvalve
A
B
CVI-**-F*
CVI-**-R*
Inserts
A
B
X
B
A
X
B
A
NormallyClosed Function
XAP
A
B
CVI-**-R16
Insert
CVCS-**- A
Cover
XAP
CVI-**-R16
Insert
CVCS-**- A
Cover
A
B
XAP
A
B
CVI-**-F or
CVI-**-R
Insert
CVC(S)-**- A
Cover
XAP
CVI-**-F or
CVI-**-R
Insert
CVC(S)-**-A
Cover
A
B
XYZ
1
Z
2
AP
1
AP
2
A B
A B
P
T
P
T
BA
b
CVCS-**-A3
Coverassupplied
DG4V-3-*A
Pilotvalve
A
B
CVI-**-R15
Insert
Normally Open Function
XYZ
1
Z
2
AP
1
AP
2
P
T
P
T
BA
b
CVCS-**-A3
Cover
DG4V-3-*A
Pilotvalve
A
B
CVI-**-F*
CVI-**-R*
Inserts
A
B
X
B
A
X
B
A
NormallyClosed Function
XAP
A
B
CVI-**-R16
Insert
CVCS-**- A
Cover
XAP
CVI-**-R16
Insert
CVCS-**- A
Cover
A
B
XAP
A
B
CVI-**-F or
CVI-**-R
Insert
CVC(S)-**- A
Cover
XAP
CVI-**-F or
CVI-**-R
Insert
CVC(S)-**-A
Cover
A
B
XYZ
1
Z
2
AP
1
AP
2
A B
A B
P
T
P
T
BA
b
CVCS-**-A3
Coverassupplied
DG4V-3-*A
Pilotvalve
A
B
CVI-**-R15
Insert
Normally Open Function
XYZ
1
Z
2
AP
1
AP
2
P
T
P
T
BA
b
CVCS-**-A3
Cover
DG4V-3-*A
Pilotvalve
A
B
CVI-**-F*
CVI-**-R*
Inserts
A
B
X
B
A
X
B
A
NormallyClosed Function
XAP
A
B
CVI-**-R16
Insert
CVCS-**- A
Cover
XAP
CVI-**-R16
Insert
CVCS-**- A
Cover
A
B
XAP
A
B
CVI-**-F or
CVI-**-R
Insert
CVC(S)-**- A
Cover
XAP
CVI-**-F or
CVI-**-R
Insert
CVC(S)-**-A
Cover
A
B
XYZ
1
Z
2
AP
1
AP
2
A B
A B
P
T
P
T
BA
b
CVCS-**-A3
Coverassupplied
DG4V-3-*A
Pilotvalve
A
B
CVI-**-R15
Insert
Normally Open Function
XYZ
1
Z
2
AP
1
AP
2
P
T
P
T
BA
b
CVCS-**-A3
Cover
DG4V-3-*A
Pilotvalve
A
B
CVI-**-F*
CVI-**-R*
Inserts
A
B
X
B
A
X
B
A
NormallyClosed Function
XAP
A
B
CVI-**-R16
Insert
CVCS-**- A
Cover
XAP
CVI-**-R16
Insert
CVCS-**- A
Cover
A
B
XAP
A
B
CVI-**-F or
CVI-**-R
Insert
CVC(S)-**- A
Cover
XAP
CVI-**-F or
CVI-**-R
Insert
CVC(S)-**-A
Cover
A
B
XYZ
1
Z
2
AP
1
AP
2
A B
A B
P
T
P
T
BA
b
CVCS-**-A3
Coverassupplied
DG4V-3-*A
Pilotvalve
A
B
CVI-**-R15
Insert
Normally Open Function
XYZ
1
Z
2
AP
1
AP
2
P
T
P
T
BA
b
CVCS-**-A3
Cover
DG4V-3-*A
Pilotvalve
A
B
CVI-**-F*
CVI-**-R*
Inserts
A
B
X
B
A
X
B
A
NormallyClosed Function
Figure 22
Figure 21
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 27
CVCS Covers
Eaton-Vickers type “CVCS” cartridge covers featured in this
catalog conform to installation requirements of ISO 7368 and
DIN 24342. This includes port usage changes to the D3, PC,
W and
Metric Models
Metric bolt tappings and orifice threads; SAE plugs.
W13 functions from prior published information for cover
types ‘‘CVC.’’ For availability of covers by size and function
see page 6. All features must be specified when ordering;
those in
Model Codes - Check, Directional and
Flow Restrictor Functions - Sizes 16 to 63
1 Seal Material
F3 - Special seals. See
‘‘Fluids
and Seals’’ on page 17. Omit
for standard seals.
2 Model
CVCS - Cartridge valve cover
to ISO 7368
3 Nominal size to ISO
7368
(DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
50 - 11 (NG50)
63 - 12 (NG63)
4 Function
A - Stroke adjuster (flow
restrictor)
A3 - Stroke adjuster with
mounting face for size 03
pilot valve
B - Blanking cover
D3 - Standard directional with
mounting face for size 03
pilot valve
DC3 - Two check valves with
mounting face for size 03
pilot valve
N - Basic
PC - Pilot operated check
W - Pilot shuttle (ports X and
Z
1
)
W13 - As type W with
mounting face for size 03
pilot valve
W33 - Pilot shuttle (ports X
and B) with mounting face
for size 03 pilot valve
5 Adjuster mechanism
(for A, A3 functions only)
W - wrench adjustment with
hex lock nut (for all sizes)
K - micrometer adjuster with
key lock (for NG-16 to 40
sizes only)
M - micrometer adjuster
without key lock (for NG-16
to NG-40 sizes only)
6 Design number 20 series
7 Normal function (for D3
only)
NC - Normally closed
Blank - Normally open
See page 116 for sizes of factory-fitted
standard orifices. Other orifice sizes and
locations can be fitted by special arrange-
ment with your Eaton-Vickers representa-
tive. Non-standard orifice requirements
should be defined as follows:
8 Pilot control orifice
location
Specify port location for non-
standard orifice, e.g. ‘‘AP’’,
followed by orifice size code,
see 9. Repeat as necessary
for further non-standard
requirements.
9 Orifice size
Specify non-standard orifice
size code, see tables on page
117.
(F3-) CVCS - ** - *** - * - 20 - (NC) (- *** **)
1 4 72 83 5 96
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201228
CVI Inserts
For availability of inserts by size and function see page 7. All
features must be specified when ordering; those in brackets
( ) are optional.
Model Codes - Check, Directional and
Flow Restrictor Functions - Sizes 16 to 63
1 Seal Material
F3 - Special seals. See ‘‘Flu-
ids and Seals’’ on page 17.
Omit for standard seals.
2 Model
CVI - Cartridge valve insert
3 Nominal size to ISO
7368 (DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
50 - 11 (NG50)
63 - 12 (NG63)
4 Function
Sizes 16 to 63
D10 - 1:1 ratio
R10 - 1:1 ratio with damping
D105 - 1:1.05 ratio
D105V - 1:1.05 ratio with
variable orifice plug
D15 - 1:1.5 ratio
D20 - 1:2 ratio
DC15 - 1:1.5 ratio direct
check
R15 - 1:1.5 ratio with damp-
ing
F15 - 1:1.5 ratio with flow
restrictor
R20 - 1:2 ratio with damping
F20 - 1:2 ratio with flow
restrictor
Zero leak options
D10Z - 1:1 ratio
D105Z - 1:1.05 ratio
D105VZ - 1:1.05 ratio
D15Z - 1:1.5 ratio
D20Z - 1:2 ratio
5 Cracking pressure, bar
(psi)
For flow direction A to B
Sizes 16 to 63
Spring Insert Code
Code D10 D105(V)
L 0.33 (4.79) 0.35 (5.07)
M 1.67 (24.2) 1.75 (25.4)
H 3.34 (48.4) 3.5 (50.76)
Insert Code
Spring D15, R15 D20, R20
Code DC15 F20
L 0.5 (7.3) 0.6 (8.7)
M 2.5 (36.3) 3.0 (43.5)
H 5.0 (73) 5.8 (84.7)
6 Design number 50 series
Sizes 16 - 63
D10 50 design
R10 50 design
D105 50 design
D105V 50 design
D15 50 design
D20 50 design
DC15 50 design
R15 50 design
R15 50 design
R20 50 design
F20 50 design
7 Orifice size
Specify non-standard orifice
size code, see tables on page
117 for D105V only.
See page 116 for sizes of factory-fitted
standard orifices. Other orifice sizes and
locations can be fitted by special arrange-
ment with your Eaton-Vickers representa-
tive. Non-standard orifice requirements
should be defined as follows:
Note: A nameplate is supplied with each
insert for fixing to the cover to identify the
insert in use.
(F3-) CVI - ** - **** - * - 50 (-**)
1 2 4 73 65
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 29
Pilot Operated Directional Valves
Unless otherwise stated, performances are based on petro-
leum oil at 36 cSt (168 SUS) and at 50_C (122_F). For pres-
sure drops at other viscosities, see page 119.
Pressure Drop/Flow Through Insert
(Flow from Port A to B)
•
= Rated flow point
0
5
10
15
20
0
10
20
300
psibar
Flow rate
CVI-16-C025; D10; D105; D105V
100200 300400 L/min
100755025 mpgSU
mpgSU
mpgSU mpgSU
mpgSU
mpgSU0
0
5
10
15
20
0
10
20
300
psibar
Flow rate
200400 600800 1000
0
L/min
300200100
0
5
10
15
20
0
10
20
300
psibar
Flow rate
CVI-40-C025;D10;D105;D105V; OD105
500 1500 2000L/min
5003002001000
1000
400
0
5
10
15
20
0
10
20
300
psibar
Flow rate
600 1200 1800 2400 3000
0
L/min
800400
200
600
0
5
10
15
20
0
10
20
300
psibar
Flow rate
CVI-63-D10; D105; D105V; OD105
1000 20003000
4000 5000
0
L/min
1500500
1000
CVI-50-D10; D105; D105V; OD105
0
5
10
15
20
0
100
200
300
psibar
Flow rate
CVI-32-C025; D10; D105; D105V;OD105
300600 900 1200 1500
0
L/min
400200100
300
CVI-25-C025;D10;D105;D105V; OD105
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201230
Pressure Drop/Flow Through Insert
(Flow from Port A to B)
•
= Rated flow point
Pilot Operated Directional Valves (cont...)
0
5
10
15
20
0
10
20
30
psi bar
Flow rate
CVI-16-D15; DC15; D20
100
200 300 400 L/min
100755025 mpgSU0
0
5
10
15
20
0
10
20
30
psibar
Flow rate
CVI-25-D15; DC15; D20
200 400 600
800 1000
0
L/min
300 USgpm200
100
0
5
10
15
20
0
10
20
300
psi
bar
Flow rate
CVI-32-D15; DC15; D20
300 600 900
12001500
0
L/min
400 USgpm200100
300
0
5
10
15
20
0
10
20
30
psibar
Flow rate
CVI-40-D15; DC15; D20
CVI-50-D15; DC15; D20CVI-63-D15; DC15; D20
500 1500 2000L/min
500
300200
100
0
USgpm
1000
400
0
5
10
15
20
0
10
20
30
psibar
Flow rate
600 1200 1800 2400 3000
0
L/min
800 USgpm400200
600
0
5
10
15
20
0
10
20
30
psi bar
Flow rate
1000 2000 3000
4000 5000
0
L/min
1500 USgpm500
1000
D20
D15,
DC15
D20
D15,
DC15
D20
D15,
DC15
D20
D15,
DC15
D20
D15,
DC15
D20
D15,
DC15
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 31
Pilot Operated Directional Valves (cont...)
Pressure Drop/Flow Through Insert
(Flow from Port A to B)
•
= Rated flow point
0
5
10
15
20
0
10
20
300
psi bar
Flow rate
CVI-16-R15
100 200300 400L/min
100755025 mpgSU0
0
5
10
15
20
0
10
20
300
psi bar
Flow rate
CVI-32-R15
300 600 900 12001500
0
L/min
400 USgpm200
100
300
0
5
10
15
20
0
10
20
300
psi bar
Flow rate
CVI-25-R15
200 400 600 8001000
0
L/min
300 USgpm200
100
0
5
10
15
20
0
10
20
300
psi
bar
Flow rate
CVI-40-R15
500 1500 2000 L/min
500300200100 mpgSU0
1000
400
CVI-50-R15
CVI-63-R15
0
5
10
15
20
0
10
20
30
psibar
Flow rate
600 1200 1800 24003000
0
L/min
800 USgpm400200
600
0
5
10
15
20
0
10
20
30
psi bar
Flow rate
1000 2000 3000
4000 5000
0
L/min
1500 USgpm500
1000
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201232
Covers for Blanking ‘‘B’’ and Basic ‘‘N’’
Functions
■ For thread sizes and orifice kits see page 116.
Location of Nameplates
Size A B C D E Type B Type N
16 66.0 (2.6) 27.0 (1.06) 26.0 (1.02) 14.0 (0.55) 12.0 (0.47) Side Z2 Side Z2
25 86.0 (3.39) 26.0 (1.02) 25.0 (0.98) 15.0 (0.59) 22.0 (0.87) Side Z2 Side Z2
32 101.6 (4.00) 31.0 (1.22) 30.0 (1.18) 25.0 (0.98) 31.0 (1.22) Side Z2 Side Z2
40 126.0 (4.96) 36.0 (1.42) 35.0 (1.38) 25.0 (0.98) 33.0 (1.30) Side Z2 Side Z2
50 140.0 (5.51) 45.0 (1.77) 44.0 (1.73) 36.0 (1.42) 34.0 (1.34) Side Z2 Side Z2
63 180.0 (7.09) 49.0 (1.93) 48.0 (1.89) 42.0 (1.65) 43.0 (1.69) Side Z2 Side Z2
A sq.
A sq.
Orientation
Pin
Location of standard
orifice ‘X’
Nameplate: CVCS
and 2 holes for attachment
of CVI (insert) nameplate
See page 120 for
information on bolt sizes, bolt kits
and assembly torques
(Bolts need to be ordered separately)
Mounting face
Orientation
Pin
3.0
(0.12) Max.
3.0
(0.12) Max.
3.0
(0.12) Max.
Z2
E
E
B
B
D D
CC
Z1
XY
Z2
Z1
XY
CVCS-**-B
Sizes16to63
CVCS-**-N
Sizes16to63
XYZ
1
Z
2
AP XYZ
1
Z
2
AP
Dimensions
mm (inches)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 33
Covers for Pilot Operated Check ‘‘PC’’ and
Shuttle ‘‘W’’ Functions
■ For thread sizes and orifice kits see page 116.
• Minimum clearance for removal of cover from manifold.
Location of Nameplates
Size A B C D E Type PC Type W
16 66.0 (2.6) 35.0 (1.38) 26.0 (1.02) 14.0 (0.55) 10.0 (0.39) Side Y Side Y
25 86.0 (3.39) 40.0 (1.57) 25.0 (0.98) 15.0 (0.59) 10.0 (0.39) Side Y Side Y
32 101.6 (4.00) 50.0 (1.97) 30.0 (1.18) 25.0 (0.98) 10.0 (0.39) Side Y Side Z2
40 126.0 (4.96) 48.0 (1.89) 35.0 (1.38) 25.0 (0.98) 10.0 (0.39) Side Y Side Y
50 140.0 (5.51) 53.0 (2.09) 44.0 (1.73) 36.0 (1.42) 34.0 (1.34) Side Y Side Y
63 180.0 (7.09) 53.0 (2.09) 48.0 (1.89) 42.0 (1.65) 43.0 (1.69) Side Y Side Y
A sq.
A sq.
Orientation
Pin
Location of standard
orifice ‘X’
Location of
standard
orifice ‘Z2’
Nameplate: CVCS
and 2 holes for attachment
of CVI (insert) nameplate
See page 120 for
information on bolt
sizes, bolt kits
and assembly torques
(Bolts need to be ordered separately)
Mounting face
Orientation
Pin
Profile for size
16 only
Profile for size
16 only
3.0
(0.12) Max.
43.0
(1.70)
3.0
(0.12) Max.
3.0
(0.12) Max.
3.0
(0.12) Max.
43.0
3.0
(0.12) Max.
Z2
E E
B
B
D
D
C
C
Z1
X
Y
Z2
Z1
X
Y
CVCS-**-W
Sizes16to63
CVCS-**-PC
Sizes16to63
X YZ
1
Z
2
AP X YZ
1
Z
2
AP
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201234
■ For thread sizes and orifice kits see page 116.
• Minimum clearance for removal of cover from manifold.
▲ Size 03 pilot control valve to be ordered separately. Recommended model Eaton-Vickers DG4V-3.
○ DG4V-3 with coil type U.
DG4V-3-70
Covers for Directional/Flow Control Functions
‘‘D(C)3’’
B Location of Nameplates
Size A D3 DC3 C D E Type D3 Type DC3
16 66.0 (2.6) 48.0 (1.89) 48.0 (1.89) 36.0 (1.42) 14.0 (0.55) 12.0 (0.47) Side Z2 Side Z2
25 86.0 (3.39) 40.0 (1.57) 50.0 (1.97) 25.0 (0.98) 15.0 (0.59) 22.0 (0.87) Side Y Side Z2
32 101.6 (4.00) 36.0 (1.42) 49.0 (1.93) 30.0 (1.18) 25.0 (0.98) 31.0 (1.22) Side Y Side Z2
40 126.0 (4.96) 36.0 (1.42) 48.0 (1.89) 35.0 (1.38) 25.0 (0.98) 33.0 (1.30) Side Y Side Z2
50 140.0 (5.51) 45.0 (1.77) 45.0 (1.77) 44.0 (1.73) 36.0 (1.42) 34.0 (1.34) Side Y Side Z2
63 180.0 (7.09) 49.0 (1.93) 49.0 (1.93) 48.0 (1.89) 42.0 (1.65) 43.0 (1.69) Side Y Side Z2
A sq.
YX
E
E
86.00
Only for size - 16
91.0
(3.58)
B
C
Mounting face
D
A
60.0
(2.36)
Orientation
Pin
CVCS-**-D3 only:
Location for
optional
orifice Z1
CVCS-**-D3 only:
Location for optional
orifice Z2
DG4V-3-2AL/BL
DC sols: 110.0 (4.33)
AC sols: 100.0 (3.94)
DG4V-3-2A/B
DC sols: 110.0 (4.33)
AC sols: 100.0 (3.94)
Interface to ISO4401 size 03
(ANSI/B93. 7M-D03)
4 mounting holes tapped according to
M5-6H X 12.0 (0.47) deep
for port tappings for plug/optional orifices
(according to functional symbol) see page 117
0.3
(0.12) Max.
0.3
(0.12) Max.
64.0 (2.52) Max.
for coil removal
Size 16
Pilot mounting interface
offset by 11.0 (0.43)
to Y port side
Plugged port AP2
Location for
optional
orifice AP1
View on arrow
A:
Type D3
X
Z2
Y
Z1
X
Z2
Y
Z1
View on arrow
A:
Type DC3
4.50 (0.18)
Only for CVCS-**-DC3
4.50 (0.18)
Only for CVCS-**-DC3
Fixed
orifice
AP
Nameplate: CVCS
and 2 holes for
attachment of CVI
(insert) nameplate
See page 120 for
information on bolt sizes,
bolt kits and assembly
torques (Bolts need to be
ordered separately)
CVCS-**-D3
Sizes16to63
CVCS-**-DC3
Sizes16to63
X Y
ABP T
Z
1
AP
1
AP
2
Z
2
X YAP
P A B T
Z
1
Z
2
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 35
■ For thread sizes and orifice kits see page 116.
• Minimum clearance for removal of cover from manifold.
▲ Size 03 pilot control valve to be ordered separately. Recommended model Eaton-Vickers DG4V-3.
○ DG4V-3 with coil type U.
DG4V-3-70
‘‘W13’’ and ‘‘W33’’ Covers with Size 03 Pilot
Valve Interface
B Location of Nameplates
Size A W13 DC3 C D E Type W13 Type W33
16 66.0 (2.6) 48.0 (1.89) 48.0 (1.89) 36.0 (1.42) 14.0 (0.55) 12.0 (0.47) Side Z2 Side Z2
25 86.0 (3.39) 50.0 (1.97) 50.0 (1.97) 25.0 (0.98) 15.0 (0.59) 22.0 (0.87) Side Z2 Side Z2
32 101.6 (4.00) 60.0 (2.36) 50.0 (1.97) 30.0 (1.18) 25.0 (0.98) 31.0 (1.22) Side Z2 Side Z2
40 126.0 (4.96) 60.0 (2.36) 50.0 (1.97) 35.0 (1.38) 25.0 (0.98) 33.0 (1.30) Side Z2 Side Z2
50 140.0 (5.51) 60.0 (2.36) 50.0 (1.97) 44.0 (1.73) 36.0 (1.42) 34.0 (1.34) Side Z2 Side Z2
63 180.0 (7.09) 60.0 (2.36) 50.0 (1.97) 48.0 (1.89) 42.0 (1.65) 43.0 (1.69) Side Z2 Side Z2
XAPYZ
AB
PT
Z
12
CVCS-* *-W33
Sizes16to63
XAPY
ABPT
Z
1
Z
2
CVCS-* *-W13
Sizes16to63
A sq.
YX
E
E
8.4 (0.33)
91.0
(3.58)
60.0
(2.36)
Z1
Z2
86.00
Only for size - 16
B
C
Mounting face
D
A
Orientation
Pin
DG4V-3-2AL/BL
DC sols: 110.0 (4.33)
AC sols: 100.0 (3.94)
DG4V-3-2A/B
DC sols: 110.0 (4.33)
AC sols: 100.0 (3.94)
Interface to ISO4401 size 03
(ANSI/B93. 7M-D03)
4 mounting holes tapped according to
M5-6H X 12.0 (0.47) deep
for port tappings for plug/optional orifices
(according to functional symbol) see page 117
0.3
(0.12) Max.
0.3
(0.12) Max.
64.0 (2.52) Max.
for coil removal
Size 16
Pilot mounting interface
offset by 9.0 (0.36)
to Y port side
Location for
orifice AP
View on arrow
A:
Type W13
Location for optional
orifice Z1
Location for optional
orifice X
XX
Z2 Z2
YY
Z1 Z1
View on arrow
A:
Type W33
Nameplate: CVCS
and 2 holes for
attachment of CVI
(insert) nameplate
See page 120 for
information on bolt sizes,
bolt kits and assembly
torques (Bolts need to be
ordered separately)
W33
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201236
CVCS-**-A
Sizes16to63
XAPZ
1
ZY
2
For adjuster
options and
details, see
this page
Mounting
face
B
C
D
G
F
E
A sq.
Z1
Z2
Y
X
Orientation
Pin
3.0
(0.12) Max.
3.0
(0.12) Max.
Adjuster
15,0(0.59)sq.
Adjuster
17.0 (0.67) sq.
Hex. locknut
36,0(1.42) A/F
Hex. locknut
41.0 (1.61) A/F
66.0(2.59)
Max.
Thread
M24x1,5
Thread
M27x2
Adjuster
7.5 (0.29) sq.
Adjuster
10.0 (0.39) sq
. (Size 40)
8.0 (0.32)sq. (Size 32)
Hex. locknut
17.0 (0.67) A/F
Hex. locknut
22.0 (0.87) AF (Size 40)
19 (0.75) A/F (Size 32)
Thread
M14x1,5
(Size 40)
M12X1.5
(Size 32)
Thread
M10X1.0
Topfaceof
cover
74,5 (2.93)
max.
43,0 (1.69) forkey
insertion type Konly
Details of Stroke Adjusters
Forcover types CVC(S)-**-A, A3
TypesKandM
Sizes 16, 25 and 32 only
Type K:
Adjustment of valve
setting is only possible
while key is inserted
and turned to engage
driving pin. When key is
removed, adjuster
knob can be freely
spun and does not
engagewith
mechanism.
Topfaceof
66.0 (2.59)
cover
Topfaceof
cover
Type W
Sizes16and 25
Size 32 (CVCS-**-A3 only)
Type W
Size 32 (CVCS-**-A only)
Size 40
Type W
Size 50
Type W
Size 63
Amax.
Size 32:A=36,0(1.42)
Size 40:A= 49.0 (1.93)
54,0
(2.12)
Nameplate: CVCS
and 2 holes for
attachment of CVI
(insert) nameplate
See page 120 for
information on bolt sizes,
bolt kits and assembly
torques (Bolts need to be
ordered separately)
• Minimum clearance for removal of cover from manifold.
For adjuster type K allow 43,0 (1.69) for key removal, see this page.
Covers with Stroke Limiters ‘‘A’’ for Flow
Control Functions
F G Location for
Size A B C D E W K&M max. min. Nameplates
16 66.0 (2.60) 37.0 (1.46) 36.0 (1.42) 14.0 (0.55) 12.0 (0.47) 91.0 (3.58) 111.5 (4.39) 28.0 (1.10) 19.0 (0.75) Side Z2
25 86.0 (3.39) 37.0 (1.46) 25.0 (0.98) 15.0 (0.59) 22.0 (0.87) 91.0 (3.58) 111.5 (4.39) 41.0 (1.61) 30.0 (1.18) Side Z2
32 101.6 (4.00) 50.0 (1.97) 30.0 (1.18) 25.0 (0.98) 31.0 (1.22) 86.0 (3.39) 124.5 (4.90) 50.0 (1.97) 36.0 (1.42) Side Z2
40 W 126.0 (4.96) 48.0 (1.89) 35.0 (1.38) 25.0 (0.98) 33.0 (1.30) 97.0 (3.82) - 70.0 (2.76) 51.0 (2.01) Side Z2
40 K&M 126.0 (4.96) 60.0 (2.36) 35.0 (1.38) 25.0 (0.98) 33.0 (1.30) - 134.5 (5.3) 70.0 (2.76) 51.0 (2.01) Side Z2
50 140.0 (5.51) 76.0 (2.99) 44.0 (1.73) 36.0 (1.42) 34.0 (1.34) 142.0 (5.59) - 82.0 (3.23) 52.0 (2.05) Side Z2
63 180.0 (7.09) 91.0 (3.58) 48.0 (1.89) 42.0 (1.65) 43.0 (1.69) 156.0 (6.14) - 111.0 (4.37) 82.0 (3.23) Side Z2
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 37
Covers for Directional and Flow Control
Functions ‘‘A3’’
F G Location for
Size A B C D E W K&M max. min. H Nameplates
16 66.0 (2.60) 95.0 (3.74) 26.0 (1.02) 14.0 (0.55) 12.0 (0.47) 149.0 (5.87) 169.5 (6.67) 29.0 (1.14) 18.0 (0.71) 83.0 (3.27) Side Z2
25 86.0 (3.39) 95.0 (3.74) 25.0 (0.98) 15.0 (0.59) 22.0 (0.87) 149.0 (5.87) 169.5 (6.67) 44.0 (1.73) 33.0 (1.30) 100.0 (3.94) Side Z2
32 101.6 (4.00) 94.0 (3.70) 30.0 (1.18) 25.0 (0.98) 31.0 (1.22) 148.0 (5.83) 168.5 (6.63) 52.0 (2.05) 38.0 (1.50) 105.0 (4.13) Side Z2
CVCS-**-A3
Sizes16to32
As supplied for
Normally Closed function
As can be modified for Normally Open
function: interchange plug/orifice in AP
1
/AP
2
Orientation
Pin
H
YX
Y
Plugged port AP
2
(as supplied)
Location for fixed
orifice AP
1
(as supplied)
X
Z1
Z1
Z2
Z2
A sq.
3.0
(0.12) Max.
91.0
(3.57)
75.00
+0.001
-0.001
E
J = H-(A/2)
60.0
(2.36)
64.0 (2.52) Max.
for coil removal
Datum for
size 03
interface
Interface to ISO4401 size 03
(ANSI/B93. 7M-D03)
4 mounting holes tapped according to
M5-6H X 12.0 (0.47) deep
for port tappings for plug/optional orifices
(according to functional symbol) see page 117
DG4V-3-2A
DC sols:
178.75 (7.04)
AC sols:
168.75 (6.64)
View on arrow
A
Location for
optional orifice Z1
Location for
optional orifice Z2
Type W adjuster as fitted to sizes
16, 15, 32 see page 36 for:
- Type W adjuster as fitted to larger models
- Type K & M adjusters (sizes 16, 25 & 32 only)
- Adjuster wrench sizes
(For size 40 to 63 see next page)
XZ
1
ZY
2
AP
1
AP
PA BT
XZ
1
ZY
2
AP
1
AP
PA BT
See page 120 for information on bolt sizes, bolt kits and assembly
torques (Bolts need to be ordered separately)
Nameplate: CVCS and 2 holes for
attachment of CVI (insert) nameplate
A
■ For thread sizes and orifice kits see page 116.
•
Minimum clearance for removal of cover from manifold. For adjuster type K allow 43,0
(1.69) for key removal, see page 36.
▲ Size 03 pilot control valve to be ordered separately. Recommended model Eaton-
Vickers DG4V-3.
○ DG4V-3- with coil type U.
DG4V-3-70
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201238
Covers for Directional and Flow Control
Functions ‘‘A3’’
F G Location for
Size A B C D E W K&M max. min. H K Nameplates
40 126.0 (4.96) 94.0 (3.70) 35.0 (1.38) 25.0 (0.98) 33.0 (1.30) 136.0 (5.35) - 72.0 (2.83) 53.0 (2.09) 125.0 (4.92) 75.5 (2.97) Side Z2
50 140.0 (5.51) 94.0 (3.70) 44.0 (1.73) 36.0 (1.42) 34.0 (1.34) 141.0 (5.55) - 82.0 (3.23) 52.0 (2.05) 139.0 (5.47) 82.5 (3.25) Side Z2
63 180.0 (7.09) 109.0 (4.29) 48.0 (1.89) 42.0 (1.65) 43.0 (1.69) 170.0 (6.69) - 111.0 (4.37) 82.0 (3.23) 179.0 (7.05) 82.5 (3.25) Side Z2
■ For thread sizes and orifice kits see page 116.
•
Minimum clearance for removal of cover from manifold. For adjuster type K allow 43,0
(1.69) for key removal, see page 36.
▲ Size 03 pilot control valve to be ordered separately. Recommended model Eaton-
Vickers DG4V-3.
○ DG4V-3- with coil type U.
DG4V-3-70
CVCS-**-A3
Size 50 - 63
X Y
H
X
E
Y
Z1
Z2
Z2
Z1
XY
Z
1
Z
2
AP
1
AP
2
X YZ
1
Z
2
AP
1
AP
2
P A B TP A B T
As suppliedfor
NormallyClosedfunction
As canbemodified forNormallyOpen
function: interchangeplug/orifice in AP
1
/AP
2
Orientation
Pin
Location for
optional orifice Z1
Location for
optional orifice Z2
A sq.
3.0
(0.12) Max.
J = H-(A/2)
See page 36 for
adjuster wrench sizes.
F
B
C
D
G
22
A
91.0
(3.57)
60.0
(2.36)
64.0 (2.52) Max.
for coil removal
DG4V-3-2A
DC sols:
178.75 (7.04)
AC sols:
168.75 (6.64)
Datum for
size 03
interface
K
View on arrow
A
See page 120 for information on bolt sizes, bolt kits
and assembly torques (Bolts need to be ordered separately)
Nameplate: CVCS and 2 holes for
attachment of CVI (insert) nameplate
Interface to ISO4401 size 03
(ANSI/B93. 7M-D03)
4 mounting holes tapped according to
M5-6H X 12.0 (0.47) deep
for port tappings for plug/optional orifices
(according to functional symbol) see page 117
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 39
General Information
Cartridge relief valve covers feature manual pressure setting
adjustment with a choice of adjusters, i.e. micrometer (M),
micrometer with key lock (K), or standard square end screw
with hex. locknut (W). Additionally, venting, unloading, and
remote piloting are possible. Alternative arrangements include
integral electrical selection of pressure or venting and of dual
pressure settings and venting. Electrically proportional control
is also available.
The cartridge insert consists of a sleeve, a seating poppet
(area ratio 1:1), and a closing spring (Figure 2, page 14). It is
retained in the manifold cavity by a control cover which con-
tains the manually adjustable pilot valve and all piloting con-
nections. An ISO 4401, size 03 (ANSI/B93.7M-D03) mount-
ing interface for pilot control valves or modules is optional.
Cartridge valve characteristics can be matched to application
requirements by adding suitable orifices in the pilot circuit.
Relief valve arrangements described in this catalog can be
built into system manifold assemblies with directional flow
regulating and pressure reducing functions in cartridge form.
System Relief Valve
ISO 7368, B*-**-2-B specifies an interface strictly for use
with main system relief valves. This interface differs from ISO
7368, B*-**-2-A, only in the position of the orientation pin see
page 123) which prevents any other valve function from being
inadvertently installed where a system relief valve should be
used. Eaton-Vickers introduces system relief valve covers,
type CVCS-**-SC(*) in compliance with ISO 7368, B*-**-2-B.
This is in addition to existing relief covers type CVCS-**-C(*)
which conform to ISO 7368, B*-**-2-A.
Maximum Operating Pressure
Up to 350 bar (5000 psi), dependent on the maximum pres-
sure of any pilot valve or module used.
Pressure Adjustment Range
3 to 125 bar (43 to 1800 psi)
5 to 250 bar (72 to 3600 psi)
8 to 350 bar (116 to 5000 psi)
Maximum Recommended Flow Rates
Nominal sizes ISO 7368 (DIN 24342):
06 (NG16 ............................................... 255 L/min (67 Usgpm)
08 (NG25 ............................................. 590 L/min (155 Usgpm)
09 (NG32 ........................................... 1250 L/min (330 Usgpm)
10 (NG40 ........................................... 1700 L/min (450 Usgpm)
Control Data
Manual pressure adjustment is located in the control cover.
Adjustment options are shown starting on page 47. A vent
connection is provided for optional remote control by suitable
pilot pressure or pilot directional control valve(s). These can
simulate remotely the integral pilot options shown starting on
page 47. For typical pilot flows, see chart below.
Pilot Control Modules
Details of CVG***-3 pilot control modules are shown on
pages 112-115.
Pilot Control Flows for Maximum Pressure
Flow rate Pilot flow in L/min
Nominal valve through (USgpm) for pressure
size ISO 7368 main valve at the A(P) port of
(DIN 24342) L/min (USgpm) 350 bar (5000 psi)
06 (NG16) 50 (13.2) 1,60 (0.42)
230 (60.1) 2,00 (0.53)
08 (NG25) 20 (5.3) 1,15 (0.30)
200 (52.8) 1,50 (0.4)
550 (145) 1,70 (0.45)
09 (NG32) 25 (6.6) 1,14 (0.30)
200 (52.8) 1,60 (0.42)
680 (180) 1,75 (0.46)
10 (NG40) 25 (6.6) 1,28 (0.34)
400 (105.7) 1,60 (0.42)
700 (184.9) 2,00 (0.53)
Pressure Relief and Venting Functions
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201240
General Information
The pressure relief function is obtained by using a model D10
or C10F (1:1 area ratio) insert poppet and either a model C or
C3 cover. Zero leak function to have no leakages from pilot to
B line is also available using D10Z & C10FZ (ratio 1:1) spool.
The C3 cover includes a mounting pad for a pilot valve with
an ISO 4401, size 03 (ANSI/B93.7M-D03) interface. Single or
double solenoid pilot valves are applicable. A model CVGC-3
module is available for use with dual solenoid pilot valves to
obtain two pressure settings and a vent (both solenoids de-
energized) condition.
For main system relief functions use model type SC, SC3.
Electrically controlled proportional pilots provide infinitely vari-
able pressure settings over a wide pressure range, achieved
by using either a D3 cover or a remote pilot. In each configu-
ration the Z1 port is used as a vent port or for remote hydrau-
lic control. A suitable remote control is the CGR-02 valve. Port
Z1 should be blocked when not required. Port Y is a drain
port.
When the insert’s B port goes directly to tank the Y port can
be connected to it. However, any back pressure in the B
port is additive to the pressure setting. If there are pressure
surges in the B port, the Y port should be directly drained to
the tank through a separate line. All functions are available in
sizes 16, 25, 32 and 40.
Pressure Relief Function:
Sizes 16 to 40
Two insert types are available for pressure relief functions:
Type D10 has no internal orifice and requires pilot connection
A to X to be made in the manifold block.
Type D10 insert has good response combined with low shock
characteristics and is recommended for general use.
Type C10F has a fixed orifice connecting port A to the pilot
relief stage, allowing through-spool piloting for faster re-
sponse. The higher response characteristics of type C10F can
be further enhanced by the addition of the connection A to X
within the manifold block. System shock generation is depen-
dent on the usual factors of trapped volume, system pressure
and flow rate.
For stable valve operation follow Eaton-Vickers recommenda-
tions for selection of spring for each size of insert. See model
code 5, page 43. Factory-fitted orifices in the covers are sized
such that a given relief cover can be used with either insert
type. Further fine tuning to suit particular system require-
ments can be achieved by changing orifice sizes. Operation of
both types D10 and C10F is similar: System pressure at A(P),
Figures 23 and 24, is determined by manual pilot adjustment.
Orifices in AP and X ports dampen poppet reaction time,
preventing instability. Connecting port Z1 to tank (via an ap-
propriate remote control valve) vents the system pressure at
port A(P) to a level equivalent to insert poppet spring load plus
override pressure. See curves starting on page 45 for override
pressure versus flow rate.
Pressure Relief and Venting Functions (cont...)
Y
Y
B(T)
B(T)
X
Z1
X
Z1
AP
AP
Fixed orifice
Y
Y
B(T)
B(T)
X
Z1
X
Z1
AP
AP
Fixed orifice
XYAP
Z
1
A(P)
B(T)
CVI-**-D10
Insert
CVCS-**- C
Cover
XYAP
Z
1
A(P)
B(T) CVI-**-C10F
Insert
CVCS-**- C
Cover
XYAP
Z
1
A(P)
B(T)
CVI-**-D10
Insert
CVCS-**- C
Cover
XYAP
Z
1
A(P)
B(T)
CVI-**-C10F
Insert
CVCS-**- C
Cover
Figure 23 Figure 24
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 41
Pressure Relief and Single Solenoid
Pilot Valve: Sizes 16 to 40
When the solenoid is de-energized, Figure 25, the cartridge is
vented. When the solenoid is energized, pressure at port A(P)
is limited by the setting of the adjuster in the cover. A left
hand pilot valve arrangement is shown. A right hand model
would allow venting when the solenoid is energized.
Pressure Relief and Dual Solenoid
Pilot Valve: Sizes 16 to 40
The CVGC-3 module, Figure 26, controls low pressure which
occurs when solenoid “a” is energized. Solenoid “b” is
energized to obtain the high pressure set by the adjuster on
the C3 cover. When both solenoids are de-energized, system
pressure is vented to the reservoir. For selection of pilot con-
trol module CVGC-3, see pages 112-115.
■ Inserts used for the relief function or combination relief and
unloading functions are D10 models. The D15 insert is not to
be used as a pressure control such as relief or counterbalanc-
ing.
Pressure Relief and Venting Functions (cont...)
Y
B(T)
A(P)
X
Z1
Y
B(T)
A(P)
X
Z1
Y
B(T)
A(P)
X
Z1
Y
B(T)
A(P)
X
Z1
A BP
T
P
T
BA
b
CVCS-**- C3
Cover
DG4V-3-* CPilotvalve
XYAPZ
1
A(P)
B(T)
CVI-**-D10
Insert
PT
CVGC-3
Module
Low pressurecontrol
CVCS-**-C3
Cover
DG4V-3-* A
Pilotvalve
CVI-**-D10
Insert
a
AB
P
T
a
XYAP
Z
1
A(P)
B(T)
A BP
T
P
T
BA
b
CVCS-**- C3
Cover
DG4V-3-* CPilotvalve
XYAPZ
1
A(P)
B(T)
CVI-**-D10
Insert
PT
CVGC-3
Module
Low pressurecontrol
CVCS-**-C3
Cover
DG4V-3-* A
Pilotvalve
CVI-**-D10
Insert
a
AB
P
T
a
XYAP
Z
1
A(P)
B(T)
Figure 25 Figure 26
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201242
Y
BT
AP
X
Z1
Pressure Relief (Proportional) and Unloading/Relief Functions
Remote Relief By Electrohydraulic Proportional
Control: Sizes 16 to 40
Maximum pressure is set by the adjuster on the C3 cover.
See Figure 27. Pressures below this pressure are remotely
electrically adjusted by the proportional pilot valve. Increasing
current to the pilot increases the pressure setting.
The pilot valve can be any of those shown in the following
table, depending on the working pressure involved. Electronic
controllers for the pilots are also shown. For precise KCG-3
configuration according to pressure range and size of cover
being used, please refer to page 50.
Maximum
Adjustable Pilot Valve Electronic
Pilot Valve Pressure Catalog Controller
KCG-3 350 bar (5000 psi) 2162 EEA-PAM-513-A-**
KBCG-3 350 bar (5000 psi) V-VLPO-MCOO2-E Internal
Figure 27
Unloading functions are D10 models. The D16 insert is not to
be used as a pressure control such as relief or counterbalanc-
ing.
Pressure Relief (Proportional) and
Unloading/Relief Functions
PT
CVCS-**-C3
Cover
KCG-3
Proportionalpilotvalve
XYAP
Z
1
A(P)
B(T)
CVI-**-D10
Insert
AB
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 43
CVCS Covers
Eaton-Vickers type “CVCS” cartridge covers featured in this
catalog conform to installation requirements of ISO 7368 and
DIN 24342. This includes function types SC, SC3. All features
must be specified when ordering; those in brackets () are
optional or apply only to specific models.
Metric Models
Metric bolt tappings and orifice threads; SAE plugs.
Model Codes - Pressure Relief and Venting
Functions
1 Seal material
F3 - Special seals. See ‘‘Flu-
ids and Seals’’ on page 17.
Omit for standard seals.
2 Model
CVCS - Cartridge valve cover
to ISO 7368
3 Nominal size to ISO
7368 (DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
4 Function
C - Pressure relief (ISO 7368,
B*-**-2-A)
C3 - Pressure relief (ISO
7368, B*-**-2-A) with mount-
ing face for size 03 pilot valve
SC - Pressure relief (ISO
7368, B*-**-2-B)
SC3 - Pressure relief (ISO
7368, B*-**-2-B) with mount-
ing face for size 03 pilot valve
5 Adjuster mechanism
K - Micrometer adjuster with
keylock
M - Micrometer adjuster
without lock
W - Wrench adjustment with
hex locknut
6 Adjustable pressure
range
125 - 3-125 bar (44-1800 psi)
250 - 5-250 bar (73-3600 psi)
350 - 8-350 bar (116-5000
psi)
For proportional control ranges, see page
50.
7 Design number, 20 se-
ries
See page 116 for sizes of fac-
tory-fitted standard orifices.
Other orifice sizes and loca-
tions can be fitted by spe-
cial arrangement with your
Eaton-Vickers representative.
Non-standard orifice require-
ments should be defined as
follows:
8 Pilot control orifice loca-
tion
Specify port location for non-
standard orifice, e.g. ‘‘AP’’,
followed by orifice size code,
see 9. Repeat as necessary
for further non-standard
requirements.
9 Orifice size
Specify non-standard orifice
size code, see tables on page
117.
(F3-) CVCS - ** - (S)C(*) - * - *** - 20 (-*** **)
1 62 4 83 975
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201244
CVI Inserts
All features must be specified when ordering; those in brack-
ets ( ) are optional.
Model Codes - Pressure Relief and
Venting Functions
1 Seal Material
F3 - Special seals. See ‘‘Flu-
ids and Seals’’ on page 17.
Omit for standard seals.
2 Model
CVI - Cartridge valve insert
3 Nominal size to ISO
7368 (DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
4 Function
C10F - 1:1 ratio with fixed
orifice
D10 - 1:1 ratio
D10Z - 1:1 ratio with zero
leak
C10FZ - 1:1 ratio with fixed
orifice and zero leak
5 Cracking pressure, bar
(psi)
For correct relief function
specify spring code according
to model size.
Cracking
Spring Pressure
Size Code bar (psi)
16 M 1.7 (24.6)
25 H 3.3 (47.8)
32 H 3.3 (47.8)
40 H 3.3 (47.8)
6 Design number, 50 se-
ries
Note: A nameplate is supplied with each
insert for fixing to the cover to identify the
insert in use.
(F3-) CVI - ** - *10(F)(Z) - * - 50
1 2 43 65
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 45
CVCS Covers
Unless otherwise stated, performances are based on petro-
leum oil at 36 cSt (168 SUS) and at 50 C (122 F). For pressure
drops at other viscosities, see page 119. Thermal stability
of proportional cartridge systems primarily depends on the
proportional pilot valve.
Pressure Drop/Flow
(Flow from Port A to B)
Performance Data - Pressure Relief and
Venting Functions
400
bar
0
2
4
6
10
0
50
100
150
psi bar
Flow rate
CoverCVCS-16-C-*-***-20
InsertsCVI-16-
Pressure drop
Pressure dropPressure drop
Pressure drop
Pressure setting
Pressure setting
D10-M-50 andCVI-16-C10F-M-50
8
40 80 120 160 200 L/min
01020304050USgpm
0
2
4
6
10
0
50
100
150
psibar
Flow rate
CoverCVCS-25-C-*-***-20
InsertsCVI-25-D10-H-50 and CVI-25-C10F-H-50
8
120 240 360 480 600 L/min
050 100 150 USgpm
0
2
4
6
10
0
50
100
150
psi bar
Flow rate
CoverCVCS-32-C-*-***-20
InsertsCVI-32-D10-H-50 and CVI-32-C10F-H-50
8
200 400 600 8001000L/min
050 100 150 USgpm
200 250
0
2
4
6
10
0
50
100
150
psi bar
Flow rate
CoverCVCS-40-C-*-***-20
InsertsCVI-40-D10-H-50 and CVI-40-C10F-H-50
InsertsCVI-16-D10-M-50 and CVI-16-C10F-M-50
8
300600 900 1200 L/min
0100 200300 USgpm
0
PressureOverride
CoverCVCS-16-C-*-***-20
psi
0
100
200
300
510L/min
0
4USgpm321
Flow rate
Spring code 350
Spring code 125
Spring code 250
15
0
1000
2000
3000
4000
5000
psi
0
100
200
300
400
bar
60 120 180 240 L/min300
0
80
USgpm
604020
Flow rate
Spring code 350
Spring code 125
Spring code 250
Low flow
High flow
1000
2000
3000
4000
5000
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201246
Performance Data - Pressure Relief and
Venting Functions
Spring code350
Spring code 350
0
1000
2000
3000
4000
5000
CoverCVCS-25-C-*-***-20
InsertsCVI-25-D10 -H-50 and CVI-25-C10F-H-50
psi
0
100
200
300
400
bar
5 10 L/min
0
4USgpm321
Flow rate
Spring code 125
Spring code 250
15
0
1000
2000
3000
4000
5000
psi
0
100
200
300
400
bar
120 240 360 480 L/min600
0
150USgpm10050
Flow rate
Springcode 35
0
Springcode 12
5
Springcode 25
0
0
1000
2000
3000
4000
CoverCVCS-32-C-*-***-20
InsertsCVI-32-D10-H-50 and CVI-32-C10F-H-50
psi
0
100
200
300
bar
5 10 15 20 L/min
mpgSU0
642
Flow rate
Spring code 350
Spring code 125
Spring code 250
25
400
5000
0
1000
2000
3000
4000
5000
psi
0
100
200
300
400
bar
200 400 600 800 L/min1000
0
250
USgpm
200100
Flow rate
Spring code 350
Spring code 125
Spring code 250
50 150
0
1000
2000
3000
4000
CoverCVCS-40-C-*-***-20
InsertsCVI-40-D10-H-50 and CVI-40-C10F-H-50
psi
0
100
200
300
bar
10
20
L/min
mpgSU0
642
Flow rate
Spring code125
Spring code250
25
400
5000
0
1000
2000
3000
4000
5000
psi
0
100
200
300
400
bar
200 400 600 800 L/min1000
0
250 USgpm200100
Flow rate
Spring code 350
Spring code 125
Spring code 250
50 150
1200
300
wolfhgiHwolfwoL
Low flow
High flow
Low flow
High flow
Pressure setting
Pressure setting
Pressure setting
Pressure setting
Pressure setting
Pressure setting
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 47
Pressure Relief and Venting Functions
F Location for
Size A B C D E W K&M G Nameplates
16 66.0 (2.6) 48.0 (1.89) 36.0 (1.42) 14.0 (0.55) 10.0 (0.39) 146.0 (5.75) 166.5 (6.56) 26.0 (1.02) Side Z2
25 86.0 (3.39) 48.0 (1.89) 25.0 (0.98) 15.0 (0.59) 10.0 (0.39) 147.0 (5.79) 167.5 (6.59) 28.0 (1.10) Side Z2
32 101.6 (4.00) 52.0 (2.05) 30.0 (1.18) 25.0 (0.98) 10.0 (0.39) 155.6 (6.13) 176.1 (6.93) 35.0 (1.38) Side Z2
40 126.0 (4.96) 57.0 (2.24) 35.0 (1.38) 25.0 (0.98) 10.0 (0.39) 180.0 (7.09) 200.5 (7.89) 39.0 (1.54) Side Z2
Orientation
Pin
3.0 (0.12)
Max.
3.0 (0.12)
Max.
Hex locknut
17.0 (0.67) A/F
Thread
M10X1.0
F overall
Type K only:
43.0 (1.69) for
key insertion
Type W
adjuster
G
E
B
C
D
Mounting
face
5.00 (0.2)
F
40.0 (1.57) for removal
of protective cover
92.00 (Only for NG-16)
93.00 (Only for NG-25)
Y
X
Z1
Z2
Y
X
Z1
Z2
A sq.
Profile of
sizes 16 & 25
Location for
fixed orifice X
Location for
optional orifice Z1
XYZ
1
Z
2
AP
See page 120 for
information on bolt sizes,
bolt kits and assembly
torques (Bolts need to be
ordered separately)
Adjuster 7.5 (0.30) sq.
Turn clockwise to increase
setting: counter clockwise to
reduce setting
Types K and M adjusters
Type K:
Adjustment of valve setting
is only possible while key is
inserted and turned to
engage driving pin. When
key is removed, adjuster
knob can be freely spun
and does not engage with
mechanism.
Nameplate: CVCS and 2 holes
for attachment of CVI (insert)
nameplate
CVCS-**-C
Sizes 16 to 40
■ For thread sizes and orifice kits see page 116.
•
Minimum clearance for removal of cover from manifold.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201248
Pressure Relief & Venting Functions with
Electrical Selection
F Location for
Size A B C D E W K&M G Nameplates
16 66.0 (2.6) 48.0 (1.89) 36.0 (1.42) 14.0 (0.55) 12.0 (0.47) 146.0 (5.75) 166.5 (6.56) 26.0 (1.02) Side Z2
25 86.0 (3.39) 48.0 (1.89) 25.0 (0.98) 15.0 (0.59) 22.0 (0.87) 147.0 (5.79) 167.5 (6.59) 28.0 (1.10) Side Z2
32 101.6 (4.00) 60.0 (2.36) 30.0 (1.18) 25.0 (0.98) 31.0 (1.22) 155.6 (6.13) 176.1 (6.93) 35.0 (1.38) Side Z2
40 126.0 (4.96) 57.0 (2.24) 35.0 (1.38) 25.0 (0.98) 33.0 (1.30) 180.0 (7.09) 200.5 (7.89) 39.0 (1.54) Side Z2
■ For thread sizes and orifice kits see page 116.
•
Minimum clearance for removal of cover from manifold.
▲ Size 03 pilot control valve to be ordered separately. Recommended model Eaton-Vickers DG4V-3.
○ DG4V-3 with coil type U.
DG4V-3-70
3.0 (0.12)
Max.
CVCS-**-C3
Sizes16to40
3.0 (0.12) Max.
5.00 (0.2)
92.00 (Only for NG-16)
93.00 (Only for NG-25)
F
A sq.
Profile of
sizes 16 & 25
60.0
(2.36)
Nameplate: CVCS
and 2 holes for attachment
of CVI (insert) nameplate
Location for
fixed orifice X
See page 120 for
information on bolt
sizes, bolt kits and
assembly torques
(Bolts need to be
ordered separately)
Adjuster7.5 (0.30) sq.
Turn clockwise to increase
pressure setting: counter
clockwise to reduce setting
91.0
(3.58)
Hex locknut
17.0 (0.67) A/F
F overall
Type K only:
43.0 (1.69) for
key insertion
Types K and M adjusters
Type K:
Adjustment of valve setting is
only possible while key is
inserted and turned to engage
driving pin. When key is
removed, adjuster knob can
be freely spun and does not
engage with mechanism.
Thread
M10 x 1.0
Type W
adjuster
G
Size 16
Pilot mounting
interface offset by
11.0 (0.43) to X
port side
E
E
64.0 (2.52)
max. for
coil removal
Mounting
face
B
C
D
DG4V-3-2AL/BL
DC sols: 110.0 (4.33)
AC sols: 100.0 (3.94)
Location for
optional orifice
Z1
Z2
Z1
XY
Z2
Z1
X
Y
Interface to ISO 4401 size 03 (ANSI/B93.7M-D03)
4 mounting holes tapped according to model code on
page 43:
For M5-6HX12.0 (0.47) deep
For B port tappings for plug/optional orifice,
see page 117
YXZ
1
Z
2
AP
PBT
40.0 (1.57) for removal
of protective cover
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 49
Pressure Relief Function with High and
Low Adjustable Settings, Vented by
Electrical Selection
Dual Pressure Control
For dimensions of CVCS-**-C3 covers, and adjustment types,
see page 48.
For dimensions of CVGC-3 module see page 115.
Arrangement With Type W Adjusters
Arrangement With Types K and M Adjusters
Type K:
Adjustment of valve setting is only possible while key is
inserted and turned to engage driving pin. When key is
removed, adjuster knob can be freely spun and does not
engage with mechanism.
64.0 (2.52)
max. for
coil removal
64.0 (2.52) max.
for coil removal
Size 16
Pilot mounting
interface offset
by 11.0 (0.43)
to X port side
DG4V-3-0C
pilot valve
CVGC-3 module
Low pressure
control
CVCS-**-C3 cover
High pressure control
DG4V-3-0C
DC sols: 220.0 (8.66)
AC sols: 200.0 (7.87)
91.0
(3.58)
60.0
(2.36)
40.0
(1.57)
E
E
ABTP
P
T
BA
b
CVCS-**-C3 cover
High pressure control
DG4V-3-0C pilot valve
Energize sol. a for low pressure
Energize sol. b for high pressure
De-energize solenoids for venting
YXAPZ
1
TP
CVGC-3 module Low
pressure control
a
BA
64.0 (2.52)
max. for
coil removal
64.0 (2.52) max.
for coil removal
Size 16
Pilot mounting
interface offset
by 11.0 (0.43)
to X port side
DG4V-3-0C
pilot valve
CVGC-3 module
Low pressure
control
CVCS-**-C3 cover
High pressure control
DG4V-3-0C
DC sols: 220.0 (8.66)
AC sols: 200.0 (7.87)
91.0
(3.58)
60.0
(2.36)
40.0
(1.57)
E
E
ABTP
P
T
BA
b
CVCS-**-C3 cover
High pressure control
DG4V-3-0C pilot valve
Energize sol. a for low pressure
Energize sol. b for high pressure
De-energize solenoids for venting
YXAPZ
1
TP
CVGC-3 module Low
pressure control
a
BA
64.0 (2.52)
max. for
coil removal
64.0 (2.52) max.
for coil removal
Size 16
Pilot mounting
interface offset
by 11.0 (0.43)
to X port side
DG4V-3-0C
pilot valve
CVGC-3 module
Low pressure
control
CVCS-**-C3 cover
High pressure control
DG4V-3-0C
DC sols: 220.0 (8.66)
AC sols: 200.0 (7.87)
91.0
(3.58)
60.0
(2.36)
40.0
(1.57)
E
E
ABTP
P
T
BA
b
CVCS-**-C3 cover
High pressure control
DG4V-3-0C pilot valve
Energize sol. a for low pressure
Energize sol. b for high pressure
De-energize solenoids for venting
YXAPZ
1
TP
CVGC-3 module Low
pressure control
a
BA
■ For thread sizes and orifice kits see page 116.
•
Minimum clearance for removal of cover from manifold. See previous page
▲ Size 03 pilot control valve to be ordered separately. Recommended model
Eaton-Vickers DG4V-3.
○ DG4V-3 with coil type U.
DG4V-3-70
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201250
62.5 (2.46)
with U type
118.0
(4.65)
61.0 (2.4)
max. for coil
removal
Size 16
Pilot mounting interface
offset by 11.0 (0.43) to X
port side
KCG-3
Proportional pilot valve
PA
XAPY
BT
CVCS-**-C3
Cover
93.5 (3.68) with
F type coil and
terminal box
Z
1
For dimensions of CVCS-**-C3 covers, and adjustment types,
see page 48.
CVCS-**-C3 Cover with KCG-3 Pilot Valve
For proportional relief valves using standard CVCS-**-C3
covers, the correct KCG-3 proportional pilot valve should be
selected from the following table according to the size and
pressure range being used. The sizing and combination of
orifices fitted into these pilot valves have been determined
by testing to give good response and stable operation across
a wide range of average system parameters using standard
covers (i.e. with standard sizes of factory fitted orifices – see
page 116).
Other orifice combinations can be provided to meet individual
requirements of customer installations. Please contact your
Eaton-Vickers representative.
Pressure Relief Function with
Electrohydraulic Proportional Control/
KCG-3 Pilot
Pressure control Cover max. pressure code, Pilot valve model code For KCG models add required
range see CVCS model code 6, coil connection and rating (See catalog GB-C-2162B for full
Size bar (psi) page 43 model code details of KCG-3)
16 5-40 (72-580) 125 KCG-3-40-D-Z-M---10 (standard)
6-100 (87-1450) 125 KCG-3-100-D-Z-M---10-P18-T15
7-160 (102-2320) 250 KCG-3-160-D-Z-M---10-P15-T12
7,5-250 (109-3625) 250 KCG-3-250-D-Z-M---10-P15-T10
7,5-350 (109-5075) 350 KCG-3-350-D-Z-M---10-P15-T10
25 5-40 (72-580) 125 KCG-3-40-D-Z-M---10 (standard)
6-100 (87-1450) 125 KCG-3-100-D-Z-M---10-P18-T15
7-160 (102-2320) 250 KCG-3-160-D-Z-M---10-P15-T12
7,5-250 (109-3625) 250 KCG-3-250-D-Z-M---10-P15-T10
7,5-350 (109-5075) 350 KCG-3-350-D-Z-M---10-P15-T10
32 7-40 (102-580) 1215 KCG-3-40-D-Z-M---10 (standard)
8,5-100 (124-1450) 125 KCG-3-100-D-Z-M---10-P18-T15
9,5-160 (138-2320) 250 KCG-3-160-D-Z-M---10-P15-T12
10,5-250 (153-3625) 250 KCG-3-250-D-Z-M---10-P15-T12
10,5-350 (153-5075) 350 KCG-3-350-D-Z-M---10-P15-T12
40 7-40 (102-580) 125 KCG-3-40-D-Z-M---10-T15
8,5-100 (124-1450) 125 KCG-3-100-D-Z-M---10-T15
9,5-160 (138-2320) 250 KCG-3-160-D-Z-M---10-T15
10,5-250 (153-3625) 250 KCG-3-250-D-Z-M---10-T15
10,5-350 (153-5075) 350 KCG-3-350-D-Z-M---10-T15
62.5 (2.46)
with U type
118.0
(4.65)
61.0 (2.4)
max. for coil
removal
Size 16
Pilot mounting interface
offset by 11.0 (0.43) to X
port side
KCG-3
Proportional pilot valve
PA
XAPY
BT
CVCS-**-C3
Cover
93.5 (3.68) with
F type coil and
terminal box
Z
1
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 51
General Information
In addition to providing the basic relief function (as described
in the preceding section, “Valves for Pressure Relief Func-
tions”) the unloading relief function provides the means of
automatically loading/unloading a fixed delivery pump ac-
cording to system demands. The high pressure side of the
hydraulic system is connected, via port X, to a small piston
fitted in front of the poppet of the pilot relief stage in the
unloader cover. When system pressure on port A reaches the
pressure setting of the pilot stage, the valve, acting as a relief
valve, starts to open. The pressure drop created by the pilot
flow through the orifices (in the main poppet and the cover)
is seen across the ends of the pilot piston, causing the piston
to quickly move up and hold the pilot relief poppet off its seat.
Full pilot flow at low pressure then creates sufficient pressure
to fully lift the main poppet to open the mainstream flow path
from A to B.
The valve remains in this condition until the reference pres-
sure at port X drops to approximately 80% of the maximum,
when the force of the pilot relief spring pushes the pilot
piston back, allowing the pilot poppet to re-seat, bringing the
system on-load again. Venting is controlled through port Z1.
Design features providing smooth load/unload characteristics,
with metering capability for partial unloading, together with
stable operation are:
•Poppetisslidingspooltype,withmeteringholestogive
progressive opening.
•Highgainpilotreliefstagepoppet.
•20%differentialpilotstageunloaderpiston.
Maximum Operating Pressure
350 bar (5000 psi)
Pressure Adjustment Range
3 to 125 bar (43 to 1800 psi)
5 to 250 bar (72 to 3600 psi)
8 to 350 bar (116 to 5000 psi)
Nominal Flow Rates
At 5 bar (72 psi) pressure drop with valve unloaded.
Nominal sizes ISO 7368 (DIN 24342)
06 (NG16) ..............................................165 L/min (45 USgpm)
08 (NG25) ..............................................300 L/min (80 USgpm)
09 (NG32) ............................................580 L/min (153 USgpm)
10 (NG40) ..........................................1000 L/min (264 USgpm)
Typical applications for unloader functions are:
Note: Relief valve for high pressure pump omitted for clarity
Figure 28
2. Accumulator systems, see Figure 29, where one pump
section (usually the smaller) is maintained on load against its
own high pressure relief valve, and the other section off/on-
loaded according to system demands.
Figure 29
Pressure Unloading/Relief Functions
A
B
X
YA
P
Z
1
A
B
X YA
P
Z
1
Acc.
A
B
X
YA
P
Z
1
A
B
X YA
P
Z
1
Acc.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201252
Pressure Relief and Unloading:
Sizes 16 to 40
Pilot connection A to Z1 is needed to ensure the pressure
relief function A to B. Pump flow at port A can be unloaded
by application of pilot pressure to port X. This pressure must
be equal to the pressure setting of the unloader pilot stage
to initiate unloading; the system pressurizes again when this
pressure drops by approx. 20% or more.
Figure 30
Pressure Relief and Unloading with Electrical Selection of
Venting:
Sizes 16 to 40
When it is required to unload the system independently of
the system demands, this can be achieved by using the cover
types U3 and selecting a suitable size 03 solenoid operated
pilot valve. By using Eaton-Vickers model type DG4V-3-2AL
for example, the system is unloaded when the solenoid is
de-energized. When the solenoid is energized the unloader
function operates (via pilot port X) as described above.
Figure 31
Pressure Unloading/Relief Functions (cont...)
DG4V-3-2AL
Pilot valve
CVCS-**-U3
Cover
A
B
CVI-**-U
Insert
XZ AP
1
PA B
T
P T
BA
Y
a
X AP
Y
Z
1
A
A
X
Y
B
B
A
X
Y
B
CVCS-**-U
Cover
CVI-**-U
Insert
Area ratio
A
A
:A
AP
= 1:1
Area ratio
A
A
:A
AP
= 1:1
DG4V-3-2AL
Pilot valve
CVCS-**-U3
Cover
A
B
CVI-**-U
Insert
XZ AP
1
PA B
T
P T
BA
Y
a
X AP
Y
Z
1
A
A
X
Y
B
B
A
X
Y
B
CVCS-**-U
Cover
CVI-**-U
Insert
Area ratio
A
A
:A
AP
= 1:1
Area ratio
A
A
:A
AP
= 1:1
DG4V-3-2AL
Pilot valve
CVCS-**-U3
Cover
A
B
CVI-**-U
Insert
XZ AP
1
PA B
T
P T
BA
Y
a
X AP
Y
Z
1
A
A
X
Y
B
B
A
X
Y
B
CVCS-**-U
Cover
CVI-**-U
Insert
Area ratio
A
A
:A
AP
= 1:1
Area ratio
A
A
:A
AP
= 1:1
DG4V-3-2AL
Pilot valve
CVCS-**-U3
Cover
A
B
CVI-**-U
Insert
XZ AP
1
PA B
T
P T
BA
Y
a
X AP
Y
Z
1
A
A
X
Y
B
B
A
X
Y
B
CVCS-**-U
Cover
CVI-**-U
Insert
Area ratio
A
A
:A
AP
= 1:1
Area ratio
A
A
:A
AP
= 1:1
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 53
CVCS Covers
Eaton-Vickers type “CVCS” cartridge covers featured in this
catalog conform to installation requirements of ISO 7368 and
DIN
Metric Models
Metric bolt tappings and orifice threads; SAE plugs.
24342. All features must be specified when ordering; those in
brackets () are optional or apply only to specific models.
Model Codes - Unloading/Relief
Functions
1 Seal material
F3 - Special seals. See ‘‘Flu-
idsand Seals’’ on page 17.
Omit for standard seals.
2 Model
CVCS - Cartridge valve cover
to ISO 7368
3 Nominal size to ISO
7368 (DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
4 Function
U - Unloading relief
U3 - Unloading relief with
mounting face for size 03
pilot valve
5 Adjuster mechanism
K - Micrometer adjuster with
keylock
M - Micrometer adjuster
without lock
W - Wrench adjustment with
hex locknut
6 Adjustable pressure
range
125 - 3-125 bar (44-1800 psi)
250 - 5-250 bar (73-3600 psi)
350 - 8-350 bar (116-5000
psi)
7 Design number, 20 se-
ries
See page 116 for sizes of fac-
tory-fitted standard orifices.
Other orifice sizes and loca-
tions can be fitted by spe-
cial arrangement with your
Eaton-Vickers representative.
Non-standard orifice require-
ments should be defined as
follows:
8 Pilot control orifice loca-
tion
Specify port location for non-
standard orifice, e.g. ‘‘AP’’,
followed by orifice size code,
see 9. Repeat as necessary
for further non-standard
requirements.
9 Orifice size
Specify non-standard orifice
size code, see tables on page
117.
(F3-) CVCS - ** - U (3) - * - *** - 20 (-*** **)
61 2 843 975
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201254
CVI Inserts
All features must be specified when ordering; those in brack-
ets ( ) are optional.
Model Codes - Unloading/Relief
Functions
1 Seal Material
F3 - Special seals. See ‘‘Flu-
ids and Seals’’ on page 17.
Omit for standard seals.
2 Model
CVI - Cartridge valve insert
3 Nominal size to ISO
7368 (DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
4 Function
U - 1:1 ratio unloading func-
tion, normally closed, sliding
spool
5 Design number, 50 se-
ries
Note: A nameplate is supplied with each
insert for fixing to the cover to identify the
insert in use.
(F3-) CVI - ** - U - 50
1 2 3 54
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 55
Pressure Drop/Flow Through Insert
(Flow from Port A to B)
•
= Rated flow point
Performance Data - Unloading/Relief
Functions
0
5
10
15
20
0
100
200
300
psi bar
Flow rate
CVI-16-U-50
Pressure drop
Pressure drop
Pressure drop
Pressure drop
100 200300 400L/min
100755025
0
5
10
15
20
0
100
200
300
psi bar
Flow rate
CVI-25-U-50
200 400 600 800
0
L/min
USgpm200100
0
5
10
15
20
0
100
200
300
psi bar
Flow rate
CVI-32-U-50
300 600 900 1200
0
0
L/min
USgpm
USgpm
0
USgpm
200100
300
0
5
10
15
20
0
100
200
300
psibar
Flow rate
CVI-40-U-50
500 1500 2000 L/min
500300200100
1000
400
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201256
Performance Data - Unloading/Relief
Functions
Pressure Override
0
1000
2000
3000
4000
5000
CoverCVCS-16-U-*-***-20
Insert CVI-16-U-50
Pressure settingPressure setting
Pressure settingPressure setting
psi
0
100
200
300
bar
50 100 150 200 L/min
mpgSU0
504020
Flow rate
Spring code
350
Spring code
125
Spring code
250
3010
0
CoverCVCS-25-U--*-***-20
Insert CVI-25-U-50
psi
0
100
200
300
400
bar
100 200 300 400L/min
0
75 USgpm10025
Flow rate
Spring code
350
Spring code
125
Spring code
250
50
0
CoverCVCS-32-U--*-***-20
Insert CVI-32-U-50
psi
0
100
200
300
400
bar
100 200 300 400 L/min
0
75 USgpm10025
Flow rate
Spring code
350
Spring code
125
Spring code
250
50
500
125
0
CoverCVCS-40-U--*-***-20
Insert CVI-40-U-50
psi
0
100
200
300
400
bar
200 400600 800L/min
mpgSU0
200100
Flow rate
Springcode
350
Springcode
125
Springcode
250
50 150
400
1000
2000
3000
4000
5000
1000
2000
3000
4000
5000
1000
2000
3000
4000
5000
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 57
Unloading/Relief Functions
F overall
Type K only:
43.0 (1.69) for
key insertion
Types K and M adjusters
Type K:
Adjustment of valve setting is
only possible while key is
inserted and turned to engage
driving pin. When key is
removed, adjuster knob can
be freely spun and does not
engage with mechanism.
3.0 (0.12)
Max.
Orientation
Pin
3.0 (0.12)
Max.
A sq.
Profile of
sizes 16 & 25
Mounting
face
Z2
Z1
X
Y
Z2
Z1
X
Y
Location for
optional orifice
Z1
40.0 (1.57) for removal
of protective cover
92.00 (Only for NG-16)
93.00 (Only for NG-25)
F
G
B
C
D
5.0 (0.2)
See page 120 for
information on bolt
sizes, bolt kits and
assembly torques
(Bolts need to be
ordered separately)
Nameplate: CVCS
and 2 holes for attachment
of CVI (insert) nameplate
Location for
fixed orifice X
Adjuster7.5 (0.30) sq.
Turn clockwise to increase
pressure setting: counter
clockwise to reduce setting
Hex locknut
17.0 (0.67) A/F
Thread
M10 x 1.0
Type W
adjuster
E
CVCS-**-U
Sizes16to40
XZ
1
AP
Y
Dimensions
mm (inch)
F Location for
Size A B C D E W K&M G Nameplates
16 66.0 (2.6) 48.0 (1.89) 36.0 (1.42) 14.0 (0.55) 10.0 (0.39) 146.0 (5.75) 166.5 (6.56) 26.0 (1.02) Side Z2
25 86.0 (3.39) 48.0 (1.89) 25.0 (0.98) 15.0 (0.59) 10.0 (0.39) 147.0 (5.79) 167.5 (6.59) 28.0 (1.10) Side Z2
32 101.6 (4.00) 52.0 (2.05) 30.0 (1.18) 25.0 (0.98) 10.0 (0.39) 155.6 (6.13) 176.1 (6.93) 35.0 (1.38) Side Z2
40 126.0 (4.96) 57.0 (2.24) 35.0 (1.38) 25.0 (0.98) 10.0 (0.39) 180.0 (7.09) 200.5 (7.89) 39.0 (1.54) Side Z2
■ For thread sizes and orifice kits see page 116.
•
Maximum clearance for removal of cover from manifold.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201258
Unloading/Relief Functions with
Electrical Section
F Location for
Size A B C D E W K&M G Nameplates
16 66.0 (2.6) 48.0 (1.89) 36.0 (1.42) 14.0 (0.55) 12.0 (0.47) 146.0 (5.75) 166.5 (6.56) 26.0 (1.02) Side Z2
25 86.0 (3.39) 48.0 (1.89) 25.0 (0.98) 15.0 (0.59) 22.0 (0.87) 147.0 (5.79) 167.5 (6.59) 28.0 (1.10) Side Z2
32 101.6 (4.00) 60.0 (2.36) 30.0 (1.18) 25.0 (0.98) 31.0 (1.22) 155.6 (6.13) 176.1 (6.93) 35.0 (1.38) Side Z2
40 126.0 (4.96) 57.0 (2.24) 35.0 (1.38) 25.0 (0.98) 33.0 (1.30) 180.0 (7.09) 200.5 (7.89) 39.0 (1.54) Side Z2
3.0 (0.12)
Max.
3.0 (0.12)
Max.
5.00 (0.2)
92.00 (Only for NG-16)
93.00 (Only for NG-25)
F
A sq.
Profile of sizes 16 & 25
60.0
(2.36)
Nameplate: CVCS
and 2 holes for attachment
of CVI (insert) nameplate
Location for
fixed orifice X
See page 120 for
information on bolt
sizes, bolt kits and
assembly torques
(Bolts need to be
ordered separately)
Adjuster7.5 (0.30) sq.
Turn clockwise to increase
pressure setting: counter
clockwise to reduce setting
91.0
(3.58)
Hex locknut
17.0 (0.67) A/F
F overall
Type K only:
43.0 (1.69) for
key insertion
Types K and M adjusters
Type K:
Adjustment of valve setting is
only possible while key is
inserted and turned to engage
driving pin. When key is
removed, adjuster knob can
be freely spun and does not
engage with mechanism.
Thread
M10 x 1.0
Type W
adjuster
G
Size 16
Pilot mounting
interface offset by
11.0 (0.43) to X
port side
E
E
64.0 (2.52)
max. for
coil removal
Mounting
face
B
C
D
DG4V-3-2AL/BL
DC sols: 110.0 (4.33)
AC sols: 100.0 (3.94)
Location for
optional orifice
Z1
Z2
Z1
X
Y
Interface to ISO 4401 size 03 (ANSI/B93.7M-D03)
4 mounting holes tapped according to model code on
page 53:
For M5-6HX12.0 (0.47) deep
For B port tappings for plug/optional orifice,
see page 117
40.0 (1.57) for removal
of protective cover
CVCS-**-U3
Sizes16to40
■ For thread sizes and orifice kits see page 116.
•
Maximum clearance for removal of cover from
manifold.
▲ Size 03 pilot control valve to be ordered separately.
Recommended model Eaton-Vickers DG4V-3.
DG4V-3 with coil type U.
DG4V-3-70
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 59
General Information
The basic pressure reducing cartridge features manual adjust-
ment of reduced pressure plus a pilot port for optional remote
control. Additional options include electrical selection of high
and low pressure, and electrohydraulic proportional control of
reduced pressure. Reducing valve arrangements described in
this catalog can be built into system manifold assemblies with
directional, manually adjustable flow restrictor and pressure
relief functions in cartridge form. The reducing function is
available in sizes 16, 25, 32 and 40.
Ratings
Maximum operating
Pressure ....................................................... 350 bar (5000 psi)
Rated flow ...............................................(p = 12 bar / 175 psi)
Size 16 ...................................................145 L/min (38 USgpm)
Size 25 ...................................................350 L/min (92 USgpm)
Size 32 .................................................550 L/min (145 USgpm)
Size 40 ...............................................................850 L/min (225
USgpm) .....................................................................................
Pressure adjustment ranges:
1,5 to 125 bar (22 to 1800 psi)
3,0 to 250 bar (44 to 3600 psi)
5,0 to 350 bar (72 to 5000 psi)
All ports are rated up to 350 bar (5000 psi), depending on
limits for relevant ports in any associated pilot valves or
modules. Note that any pressure in port Y is additive to the
setting(s) of the integral pilot pressure control(s).
Pressure Reducing Functions
Unlike other cartridge valve inserts, the reducer insert con-
tains a spool rather than a poppet. Therefore, no reference
is made to an area ratio in relation to reducing valves. The
reducing valve is normally closed. It varies flow to provide a
constant outlet pressure below that of the inlet pressure. The
pressure differential between inlet and outlet must be at least
5 bar (72 psi) for optimum reduced pressure control for low
flows.
System pressure at B is communicated through a compen-
sated flow control in the X or X3 cover into area AP. This flow
control maintains a constant flow across the cover poppet,
independent of the main flow from B(P1) to A(P2), thereby
providing pressure stability at all system flow rates. Load
pressure transients are relieved through the check valve lo-
cated in the insert spool and are limited by the pilot pressure
control in the cover.
The Z1 port is used for remote control of the reduced pres-
sure. Suitable remote controls are the C-175 and CGR-02.
Venting of the Z1 port will cause outlet pressure A(P2) to drop
to a minimum pressure related to the spring load in the insert
spool. The Z1 port should be blocked when not required. The
Y port is used to drain the pilot oil.
Dual reduced pressure functions are available using the
model X3 cover and CVGC-3 module. The X3 cover has a
mounting pad with an ISO 4401, size 03 (ANSI/B93.7MD03)
interface that accepts pilot valve DG4V-3-2AL (two position,
spring offset type) or DG4V-3-2N (two-position mechani-
cal detent type). For information on the DG4V-3 valve. Air
operated DG18V-3 or DG17V-3 manually operated pilots are
also applicable. An electrically modulated proportional pilot is
available that can provide infinitely variable reduced pressure
settings and a vent condition.
Pressure Reducing with Manual Adjustment and Remote
Control: Sizes 16 to 40
Reduced pressure at A(P2) is controlled by the manual ad-
juster in the cover. Pilot port Z1 is used for remote control.
See Figure 32.
■ This X port orifice/plug tapping not on size 16.
Normally open insert
Normally close insert
Figure 32
Pressure Reducing Functions
XYZ
1
AP
CVCS-**- X
Cover
CVI-**- X2
Insert
A(P2)
B(P1)
XYZ
1
AP
CVCS-**- X
Cover
CVI-**- X1
Y
X
Z1
Check ValveB(P1)
A(P2)
Y
X
Z1
Check Valve
B(P1)
A(P2)
Insert
A(P2)
B(P1)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201260
Dual Level Reduced Pressure by Remote Electrical
Selection: Sizes 16 to 40
Alternative arrangements using either the DG4V-3-2AL (two-
position, single solenoid, spring-offset) or DG4V-3-2N (double
solenoid, two-position detented) pilot valve are shown in
Figure 33. Control is at the X3 cover when the DG4V-3-2AL is
de-energized or the DG4V-3-2N “b” solenoid is momentarily
energized. Control is at the CVGC-3 module, sandwiched
between the cover and pilot valve, when the DG4V-3-2AL
solenoid “a” is energized or solenoid “a” of the DG4V-3-2N
is energized. In each case, the pressure set at the X3 cover
should be the higher of the two levels.
■ This X port orifice/plug tapping not on size 16.
Pressure Reducing Function by Electrohydraulic
Proportional Control: Sizes 16 to 40
The electrically modulated pilot controls pressure below the
maximum manually set level at the X3 cover. Reduced pres-
sure is proportional to the applied current. Increasing current
to the pilot increases the reduced pressure at port A(P2). See
Figure 34. The pilot valve can be any of those charted below,
depending on the working pressure involved. Electronic con-
trollers to be used with the pilots are also shown. For precise
KCG-3 configuration according to pressure range and size of
cover being used, please refer to page 68.
Maximum
Reduced Pilot Valve Electronic
Pilot Valve Pressure Catalog Controller
KCG-3 350 bar (5000 psi) 2162 EEA-PAM-513-A-**
KBCG-3 350 bar (5000 psi) V-VLPO-MCOO2-E Internal
Figure 33
Figure 34
Pressure Reducing Functions (cont...)
B(P1)
CVI-**-X1/X2
Insert
ABP
T
PT
BA
DG4V-3-2AL
Pilotvalve
X
Y
Z
1
AP
P B
T
A(P2)
CVGC-3
Module
CVCS-**- X3
Cover
A
B(P1)
CVI-**-X1/X2
Insert
A
B
P
T
P
T
B
A
b
DG4V-3-2N
Pilotvalve
CVGC-3
Module
Lowpressurecontrol
CVCS-**-X3
Cover
High pressure control
XY
Z
1
AP
P B T
A(P2)
A
a
a
B(P1)
Z1
X
Y
Z1
X
Y
B(P1)
A(P2)
B(P1)
A(P2)
CVI-**-X1/X2
Insert
CVCS-**-X3
Cover
XYZ
1
AP
A(P2)
P T
KCG-3
Proportionalpilotvalve
AB
ThisXportorifice/plug
tapping not on size 16.
B(P1)
CVI-**-X1/X2
Insert
ABP
T
PT
BA
DG4V-3-2AL
Pilotvalve
X
Y
Z
1
AP
P B
T
A(P2)
CVGC-3
Module
CVCS-**- X3
Cover
A
B(P1)
CVI-**-X1/X2
Insert
A
B
P
T
P
T
B
A
b
DG4V-3-2N
Pilotvalve
CVGC-3
Module
Lowpressurecontrol
CVCS-**-X3
Cover
High pressure control
XY
Z
1
AP
P B T
A(P2)
A
a
a
B(P1)
Z1
X
Y
Z1
X
Y
B(P1)
A(P2)
B(P1)
A(P2)
CVI-**-X1/X2
Insert
CVCS-**-X3
Cover
XYZ
1
AP
A(P2)
P T
KCG-3
Proportionalpilotvalve
AB
ThisXportorifice/plug
tapping not on size 16.
B(P1)
CVI-**-X1/X2
Insert
ABP
T
PT
BA
DG4V-3-2AL
Pilotvalve
X
Y
Z
1
AP
P B
T
A(P2)
CVGC-3
Module
CVCS-**- X3
Cover
A
B(P1)
CVI-**-X1/X2
Insert
A
B
P
T
P
T
B
A
b
DG4V-3-2N
Pilotvalve
CVGC-3
Module
Lowpressurecontrol
CVCS-**-X3
Cover
High pressure control
XY
Z
1
AP
P B T
A(P2)
A
a
a
B(P1)
Z1
X
Y
Z1
X
Y
B(P1)
A(P2)
B(P1)
A(P2)
CVI-**-X1/X2
Insert
CVCS-**-X3
Cover
XYZ
1
AP
A(P2)
P T
KCG-3
Proportionalpilotvalve
AB
ThisXportorifice/plug
tapping not on size 16.
B(P1)
CVI-**-X1/X2
Insert
ABP
T
PT
BA
DG4V-3-2AL
Pilotvalve
X
Y
Z
1
AP
P B
T
A(P2)
CVGC-3
Module
CVCS-**- X3
Cover
A
B(P1)
CVI-**-X1/X2
Insert
A
B
P
T
P
T
B
A
b
DG4V-3-2N
Pilotvalve
CVGC-3
Module
Lowpressurecontrol
CVCS-**-X3
Cover
High pressure control
XY
Z
1
AP
P B T
A(P2)
A
a
a
B(P1)
Z1
X
Y
Z1
X
Y
B(P1)
A(P2)
B(P1)
A(P2)
CVI-**-X1/X2
Insert
CVCS-**-X3
Cover
XYZ
1
AP
A(P2)
P T
KCG-3
Proportionalpilotvalve
AB
ThisXportorifice/plug
tapping not on size 16.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 61
CVCS Covers
Eaton-Vickers type “CVCS” cartridge covers featured in this
catalog conform to installation requirements of ISO 7368
and DIN 24342. All features must be specified when order-
ing; those in brackets () are optional or apply only to specific
models.
Metric Models
Metric bolt tappings and orifice threads; SAE plugs.
Model Codes - Pressure Reducing
Functions
1 Seal Material
F3 - Special seals. See ‘‘Flu-
ids and Seals’’ on page 17.
Omit for standard seals.
2 Model
CVCS - Cartridge valve cover
to ISO 7368
3 Nominal size to ISO
7368 (DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
4 Function
X - Pressure reducing
X3 - Pressure reducing with
mounting face for size 03
pilot valve mounting face for
size 03 pilot valve
5 Adjuster Mechanism
K - Micrometer adjuster with
keylock
M - Micrometer adjuster
without lock
W - Wrench adjustment with
hex locknut
6 Adjustable pressure
range
125 - 3-125 bar (44-1800 psi)
250 - 5-250 bar (73-3600 psi)
350 - 8-350 bar (116-5000
psi)
For proportional control
ranges please see page 68
7 Design number, 20 se-
ries
See page 116 for sizes of fac-
tory-fitted standard orifices.
Other orifice sizes and loca-
tions can be fitted by spe-
cial arrangement with your
Eaton-Vickers representative.
Non-standard orifice require-
ments should be defined as
follows:
8 Pilot control orifice
location
Specify port location for non-
standard orifice, e.g. ‘‘AP’’,
followed by orifice size code,
see 9. Repeat as necessary
for further non-standard
requirements.
9 Orifice size
Specify non-standard orifice
size code, see tables on page
117.
(F3-) CVCS - ** - X(3) - * - *** - 20 (-*** **)
1 4 62 83 975
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201262
CVI Inserts
All features must be specified when ordering; those in brack-
ets ( ) are optional.
Model Codes - Pressure Reducing
Functions
1 Seal Material
F3 - Special seals. See ‘‘Flu-
ids and Seals’’ on page 17.
Omit for standard seals.
2 Model
CVI - Cartridge valve insert
3 Nominal size to ISO
7368 (DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
4 Function
X1 - Pressure reducer,
normally open, sliding spool
X2 - Pressure reducer,
normally closed, sliding spool
5 Design number, 50 se-
ries
Note: A nameplate is supplied with each
insert for fixing to the cover to identify the
insert in use.
(F3-) CVI - ** - X* - 50
1 2 3 54
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 63
Unless otherwise stated, performances are based on petro-
leum oil at 36 cSt (168 SUS) and at 500 C (122 F). For pres-
sure drops at other viscosities, see page 119.
Pressure Drop/Flow (Flow from Port B to A)
Inlet pressure B(P1) = 350 bar (5000 psi)
•=Ratedowpoint
Performance Data - Pressure Reducing
Functions
0
5
10
15
20
0
100
200
300
psibar
Cover CVCS-16-X*-*-***-20
Insert CVI-16-X1/X2-50
Pressure drop
Pressure drop
Pressure drop
Pressure drop
Cover CVCS-25-X*-*-***-20
Insert CVI-25-X1/X2-50
Cover CVCS-32-X*-*-***-20
Insert CVI-32-X1/X2-50
Cover CVCS-40-X*-*-***-20
Insert CVI-40-X1/X2-50
50 100 150 200 L/min
0
0
5
10
15
20
0
100
200
300
psi bar
100200 300 400L/min
USgpm
0 100 200 300 400 500 600 700
5
10
15
20
0
100
200
300
psi bar
Flow rate
0
L/min
USgpm10050
150
0
100
200
300
psi bar
Flow rate
755025
100
0
USgpm
Flow rate
50302010
40
0 200 400 600 800 1000 1100
5
10
15
20
Flow rate
0
L/min
USgpm10050
150 200 250 300
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201264
Pressure Underride
Performance Data - Pressure Reducing
Functions
Pressure Override
0
1000
2000
3000
4000
5000
CoverCVCS-16-X-*-***-20
Insert CVI-16-X2-50
Pressure setting
Pressure setting
Pressure setting
Pressure setting
psi
0
100
200
300
bar
50 100 150 200L/min
mpgSU0 4020
Flow rate
Spring
code 350
Spring
code 125
Spring
code 250
3010
0
CoverCVCS-25-U-X*-*-***-20
Insert CVI-25-X2-50
psi
0
100
200
300
400
bar
100 200 300 400L/min
0 75 USgpm10025
Flow rate
Spring
code 350
Spring
code 125
Spring
code 250
50
0
CoverCVCS-32-X*-*-***-20
Insert CVI-32-X2-50
psi
0
100
200
300
400
bar
150 300 450 600 L/min
0 100
Flow rate
Spring
code 350
Spring
code 125
Spring
code 250
50 150
0
CoverCVCS-40-X-*-***-20
Insert CVI-40-X2-50
psi
0
100
200
300
400
bar
200 400 600800 L/min
mpgSU0 200100
Flow rate
Spring
code 350
Spring
code 125
Spring
code 250
50 150
400
1000
2000
3000
4000
5000
1000
2000
3000
4000
5000
1000
2000
3000
4000
5000
Pressure Override
0
1000
2000
3000
4000
5000
CoverCVCS-16-X-*-***-20
Insert CVI-16-X2-50
Pressure setting
Pressure setting
Pressure setting
Pressure setting
psi
0
100
200
300
bar
50 100 150 200L/min
mpgSU0 4020
Flow rate
Spring
code 350
Spring
code 125
Spring
code 250
3010
0
CoverCVCS-25-U-X*-*-***-20
Insert CVI-25-X2-50
psi
0
100
200
300
400
bar
100 200 300 400L/min
0 75 USgpm10025
Flow rate
Spring
code 350
Spring
code 125
Spring
code 250
50
0
CoverCVCS-32-X*-*-***-20
Insert CVI-32-X2-50
psi
0
100
200
300
400
bar
150 300 450 600 L/min
0
100
Flow rate
Spring
code 350
Spring
code 125
Spring
code 250
50 150
0
CoverCVCS-40-X-*-***-20
Insert CVI-40-X2-50
psi
0
100
200
300
400
bar
200 400 600800 L/min
mpgSU0
200100
Flow rate
Spring
code 350
Spring
code 125
Spring
code 250
50 150
400
1000
2000
3000
4000
5000
1000
2000
3000
4000
5000
1000
2000
3000
4000
5000
0
1000
2000
3000
4000
5000
psi
0
100
200
300
350
bar
50 100 150 L/min
0
40 USgpm2010
Flow rate
Spring
code 350
Spring
code 125
Spring
code 250
30
0
1000
2000
3000
4000
5000
psi
0
100
200
300
350
bar
100 200300 400L/min
0 100 USgpm5025
Flow rate
Pressure Setting
Pressure Setting
75
Spring
code 350
Spring
code 125
Spring
code 250
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 65
XYZ
1
Z
2
AP
Note: Size 16 doesnot have
X portorifice/plug tapping.
F overall
Type K only:
43.0 (1.69) for
key insertion
Types K and M adjusters
Type K:
Adjustment of valve setting is
only possible while key is
inserted and turned to engage
driving pin. When key is
removed, adjuster knob can
be freely spun and does not
engage with mechanism.
3.0 (0.12)
Max.
Orientation
Pin
3.0 (0.12)
Max.
A sq.
Profile of
sizes 16 & 25
Mounting
face
Z2
Z1
X
Y
Z2
Z1
X
Y
Location for
optional orifice
Z1
40.0 (1.57) for removal
of protective cover
92.00 (Only for NG-16)
93.00 (Only for NG-25)
F
G
B
C
D
10.0 (0.39)
See page 120 for
information on bolt
sizes, bolt kits and
assembly torques
(Bolts need to be
ordered separately)
Nameplate: CVCS
and 2 holes for attachment
of CVI (insert) nameplate
Location for
fixed orifice X
Adjuster 7.5 (0.30) sq.
Turn clockwise to increase
pressure setting: counter
clockwise to reduce setting
Hex locknut
17.0 (0.67) A/F
Thread
M10 x 1.0
Type W
adjuster
E
CVCS-**-X
Sizes16to40
Dimensions
mm (inch)
Pressure Reducing Functions
F Location for
Size A B C D E W K&M G Nameplates
16 66.0 (2.6) 49.0 (1.93) 36.0 (1.42) 14.0 (0.55) 10.0 (0.39) 146.0 (5.75) 166.5 (6.56) 32.0 (1.26) Side Z2
25 86.0 (3.39) 48.0 (1.89) 25.0 (0.98) 15.0 (0.59) 10.0 (0.39) 147.0 (5.79) 167.5 (6.59) 28.0 (1.10) Side Z2
32 101.6 (4.00) 52.0 (2.05) 30.0 (1.18) 25.0 (0.98) 10.0 (0.39) 155.6 (6.13) 176.1 (6.93) 35.0 (1.38) Side Z2
40 126.0 (4.96) 48.0 (1.89) 35.0 (1.38) 25.0 (0.98) 10.0 (0.39) 180.0 (7.09) 200.5 (7.89) 30.0 (1.18) Side Z2
■ For thread sizes and orifice kits see page 116.
•
Maximum clearance for removal of cover from manifold.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201266
ZXY
1
Z
2
AP
P B T
Note: Size 16 does not have
orifice/plug tappings in B & X ports.
F overall
Type K only:
43.0 (1.69) for
key insertion
Types K and M adjusters
Type K:
Adjustment of valve setting is
only possible while key is
inserted and turned to engage
driving pin. When key is
removed, adjuster knob can
be freely spun and does not
engage with mechanism.
3.0 (0.12)
Max.
DG4V-3(S)-2AL/BL
DC sols: 110.0 (4.33)
AC sols: 100.0 (3.94)
3.0 (0.12)
Max.
Interface to ISO 4401 size 03 (ANSI/B93.7M-D03)
4 mounting holes tapped according to model code
on page 61:
For M5-6HX12.0 (0.47) deep
For B port tappings for plug/optional orifice, see
page 117
Size 16
Pilot mounting interface
offset by 11.0 (0.43) to
X port side
A sq.
Profile of
sizes 16 & 25
64.0 (2.52)
max. for
coil removal
60.0
(2.36)
91.0
(3.58)
Mounting
face
Z2
Z1
X
Y
Z2
Z1
X
Y
Location for
optional orifice
Z1
40.0 (1.57) for removal
of protective cover
92.00 (Only for NG-16)
93.00 (Only for NG-25)
F
G
B
C
D
10.0 (0.39)
See page 120 for
information on bolt
sizes, bolt kits and
assembly torques
(Bolts need to be
ordered separately)
Nameplate: CVCS
and 2 holes for attachment
of CVI (insert) nameplate
Location for
fixed orifice X
Adjuster 7.5 (0.30) sq.
Turn clockwise to increase
pressure setting: counter
clockwise to reduce setting
Hex locknut
17.0 (0.67) A/F
Thread
M10 x 1.0
Type W
adjuster
E
E
CVCS-**-X3
Sizes16to40
Dimensions
mm (inch)
Dual Level Reduced Pressure Functions
w/ Electrical Selection
F Location for
Size A B C D E W K&M G Nameplates
16 66.0 (2.6) 48.0 (1.89) 36.0 (1.42) 14.0 (0.55) 12.0 (0.47) 146.0 (5.75) 166.5 (6.56) 30.0 (1.12) Side Z2
25 86.0 (3.39) 48.0 (1.89) 25.0 (0.98) 15.0 (0.59) 22.0 (0.87) 147.0 (5.79) 167.5 (6.59) 28.0 (1.10) Side Z2
32 101.6 (4.00) 60.0 (2.36) 30.0 (1.18) 25.0 (0.98) 31.0 (1.22) 155.6 (6.13) 176.1 (6.93) 35.0 (1.38) Side Z2
40 126.0 (4.96) 48.0 (1.89) 35.0 (1.38) 25.0 (0.98) 33.0 (1.30) 180.0 (7.09) 200.5 (7.89) 30.0 (1.18) Side Z2
■ For thread sizes and orifice kits see
page 116.
•
Maximum clearance for removal of cover
from manifold.
▲ Size 03 pilot control valve to be ordered
separately. Recommended model Eaton-
Vickers DG4V-3.
DG4V-3 with coil type U.
DG4V-3-70
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 67
CVCS-**-X3
cover High
pressurecontrol
DG4V-3-2Npilot valve
Energizesol.aforlow
pressure Energize sol. b
forhighpressure
CVGC-3module
Low pressurecontrol
ABPT
P
T
B
A
b
P
BT
a
ABPT
P
T
B
A
P
T
DG4V-3-2AL pilot valve
Energize sol. for low
pressure De-energize sol.
for high pressure
CVGC-3 module
Low pressure control
CVCS-**-X3 cover
High pressure control
64.0 (2.52) max.
for coil removal
DG4V-3(S)-2AL/BL
DC sols: 110.0 (4.33)
AC sols: 100.0 (3.94)
60.0
(2.36)
40.00
(1.57)
91.0
(3.58)
DG4V-3(S)-2N
DC sols: 220.0 (8.66)
AC sols: 200.0 (7.87)
64.0 (2.52) max.
for coil removal
Size 16
Pilot mounting interface
offset by 11.0 (0.43) to X
port side
DG4V-3-**
pilot valve
CVGC-3 module
Low pressure control
CVCS-**-X3 cover
High pressure control
Arrangement With Type W Adjusters
Solenoid must be maintained energized for low
pressure selection
Solenoids can be de-energized after selection
XYZ
1
AP
B
X YZ
1
AP
a
E
E
CVCS-**-X3
cover High
pressurecontrol
DG4V-3-2Npilot valve
Energizesol.aforlow
pressure Energize sol. b
forhighpressure
CVGC-3module
Low pressurecontrol
ABPT
P
T
B
A
b
P
BT
a
ABPT
P
T
B
A
P
T
DG4V-3-2AL pilot valve
Energize sol. for low
pressure De-energize sol.
for high pressure
CVGC-3 module
Low pressure control
CVCS-**-X3 cover
High pressure control
64.0 (2.52) max.
for coil removal
DG4V-3(S)-2AL/BL
DC sols: 110.0 (4.33)
AC sols: 100.0 (3.94)
60.0
(2.36)
40.00
(1.57)
91.0
(3.58)
DG4V-3(S)-2N
DC sols: 220.0 (8.66)
AC sols: 200.0 (7.87)
64.0 (2.52) max.
for coil removal
Size 16
Pilot mounting interface
offset by 11.0 (0.43) to X
port side
DG4V-3-**
pilot valve
CVGC-3 module
Low pressure control
CVCS-**-X3 cover
High pressure control
Arrangement With Type W Adjusters
Solenoid must be maintained energized for low
pressure selection
Solenoids can be de-energized after selection
XYZ
1
AP
B
X YZ
1
AP
a
E
E
Dual Pressure Reducing with
Electrical Selection
▲Size 03 pilot control valve to be ordered separately.
Recommended model Eaton-Vickers DG4V-3.
•
Minimum clearance for removal of cover from manifold. See table
on previous page.
DG4V-3 with coil type U.
DG4V-3-70
Arrangement With Types K and M Adjusters
Type K:
Adjustment of valve setting is only possible while key is inserted
and turned to engage driving pin. When key is removed, adjuster
knob can be freely spun and does not engage with mechanism.
CVCS-**-X3
cover High
pressurecontrol
DG4V-3-2Npilot valve
Energizesol.aforlow
pressure Energize sol. b
forhighpressure
CVGC-3module
Low pressurecontrol
ABPT
P
T
B
A
b
P
BT
a
ABPT
P
T
B
A
P
T
DG4V-3-2AL pilot valve
Energize sol. for low
pressure De-energize sol.
for high pressure
CVGC-3 module
Low pressure control
CVCS-**-X3 cover
High pressure control
64.0 (2.52) max.
for coil removal
DG4V-3(S)-2AL/BL
DC sols: 110.0 (4.33)
AC sols: 100.0 (3.94)
60.0
(2.36)
40.00
(1.57)
91.0
(3.58)
DG4V-3(S)-2N
DC sols: 220.0 (8.66)
AC sols: 200.0 (7.87)
64.0 (2.52) max.
for coil removal
Size 16
Pilot mounting interface
offset by 11.0 (0.43) to X
port side
DG4V-3-**
pilot valve
CVGC-3 module
Low pressure control
CVCS-**-X3 cover
High pressure control
Arrangement With Type W Adjusters
Solenoid must be maintained energized for low
pressure selection
Solenoids can be de-energized after selection
XYZ
1
AP
B
X YZ
1
AP
a
E
E
For dimensions of CVCS-**-X3 covers, and adjustment types,
see previous page.
For dimensions of CVGC-3 module see page 115 and for
adjustment types see page 36.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201268
For dimensions of CVCS-**-X3 covers, and adjustment types,
see page 66.
CVCS-**-X3 Cover with KCG-3 Pilot Valve
For proportional pressure reducing valves using standard
CVCS-**-X3 covers, the correct KCG-3 proportional pilot
valve should be selected from the following table according
to the size and pressure range being used. The sizing and
combination of orifices fitted into these pilot valves have
been determined by testing to give good response and stable
operation across a wide range of average system parameters
using standard covers (i.e. with standard sizes of factory fitted
orifices -- see page 116).
Other orifice combinations can be provided to meet individual
requirements of customer installations. Please contact your
Eaton-Vickers representative.
Pressure Reducing Function with
Electrohydraulic Proportional Control/KCG-3 Pilot
AB
CVCS-**- X3
Cover
ZXY
1
Z
2
AP
P
T
KCG-3
Proportional pilotvalve
Size 16
Pilot mounting interface
offset by 11.0 (0.43) to
X port side
100.00 (3.94) with
F type coil and
terminal box
61.0 (2.4) for
coil removal
118.0
(4.65)
62.5 (2.46)
with U type
Pressure control Cover max. pressure code, Pilot valve model code
range see CVCS model code 6 For KCG models add required coil connection and rating
Size bar (psi) page 61 (See GB-C-2162 for full model code details of KCG-3)
16 5-40 (72-580) 125 KCG-3-40-D-Z-M---10 (standard)
6-100 (87-1450) 125 KCG-3-100-D-Z-M---10 (standard)
8-160 (116-2320) 250 KCG-3-160-D-Z-M---10-P15-T12
10-250 (145-3625) 250 KCG-3-250-D-Z-M---10-T09
12-350 (174-5075) 350 KCG-3-350-D-Z-M---10-T09
25 5-40 (72-580) 125 KCG-3-40-D-Z-M---10 (standard)
6-100 (87-1450) 125 KCG-3-100-D-Z-M---10 (standard)
8-160 (116-2320) 250 KCG-3-160-D-Z-M---10-T11
10-250 (145-3625) 250 KCG-3-250-D-Z-M---10-P10L-T12
12-350 (174-5075) 350 KCG-3-350-D-Z-M---10-P10L-T12
32 5-40 (72-580) 125 KCG-3-40-D-Z-M---10 (standard)
6-100 (87-1450) 125 KCG-3-100-D-Z-M---10-P18-T18
8-160 (116-2320) 250 KCG-3-160-D-Z-M---10-P18-T18
10-250 (145-3625) 250 KCG-3-250-D-Z-M---10-P15-T12
12-350 (174-5075) 350 KCG-3-350-D-Z-M---10-P15-T12
40 5-40 (72-580) 125 KCG-3-40-D-Z-M---10 (standard)
6-100 (87-1450) 125 KCG-3-100-D-Z-M---10 (standard)
8-160 (116-2320) 250 KCG-3-160-D-Z-M---10 (standard)
10-250 (145-3625) 250 KCG-3-250-D-Z-M---10 (standard)
12-350 (174-5075) 350 KCG-3-350-D-Z-M---10 (standard)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 69
General Information
Dynamic cartridge valves have been developed for applica-
tions which require fast opening and closing times as well
as a means of ensuring that the insert/poppet has seated
positively.
Inserts are available:
•Withsealsonthepoppetwhicheliminateinternalleakage,
ensuring pressure is maintained in pilot port A.
•Withoutspoolsealsforfastresponsewithlowhysteresis.
Dynamic valves can be built into any system manifold assem-
blies which require the features offered by this new range,
whether for directional or check control function. The inserts
are offered with the three springs L, M and H, and the cover
comes with or without a stroke limiter. Dynamic range is
available in sizes 16 to 63. The inserts have an area ratio of
1:1.05 as seen by the model code CVI-**-ZD105, where Z
means dynamic.
Dynamic Functions
Unlike other cartridge valve inserts, the dynamic insert ex-
tends above the manifold to allow access to the pilot port. It
is this pilot port which pilots the poppet open or closed giving
the dynamic feature. The pilot pressure is applied via the Z2
port on the manifold if there is no pilot valve or via the B port
on the size 03 interface.
Piloting can be achieved by directly mounting a size 03
directional valve on the mounting pad with an ISO 4401, size
03 (ANSI/B93.7M-D03) interface which accepts any of the
DG4V-3 valves. The Z2 port is used for remote control of the
dynamic insert.
The dynamic insert can only be used with the special dynam-
ic cover. The cover can also be offered with a stroke limiter
for those applications where it is required to limit the stroke
and hence the flow of the relevant insert. Dynamic function is
suited for directional or check control functions requiring fast
response.
Basic Characteristics
Maximum operating pressure ...................... 350 bar (5000 psi)
Maximum flow rate (Δp = 5 bar/72 psi):
ISO 7368
(DIN 24342) A to B B to A
06 (NG16) 230 L/min (61 USgpm) 200 L/min (53 USgpm)
08 (NG25) 550 L/min (145 USgpm) 475 L/min (125 USgpm)
09 (NG32) 850 L/min (225 USgpm) 740 L/min (195 USgpm)
10 (NG40) 1200 L/min (317 USgpm) 1040 L/min (275 USgpm)
11 (NG50) 1800 L/min (476 USgpm) 1560 L/min (412 USgpm)
12 (NG63) 3000 L/min (793 USgpm) 2600 L/min (687 USgpm)
All ports are rated up to 350 bar (5000 psi) depending on limits for relevant ports in any
associated pilot valves or modules.
Functional Symbols
Figure 35
Dynamic Functions
Z
1
Z
2
T
B
PA
A
B
YX
Z
1
Z
2
Y
BA
B
A
P
X
T
Cover CVCS-**-ZDA*-*2*-*-1*
Insert CVI-**-ZD(N)105-*-1*
CoverCVCS-**-ZD*-*2*-1*
Insert CVI-**-ZD(N)105-*-1*
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201270
Features and Benefits
•OpeningandclosingindependentofAandBportpressure.
•Positiveclosingusingpilotpressure.
•Highdegreeofcontrolandrepeatability.
•Smoothandaccurateoperationcanbeachieved
(not affected by main flow).
•Fullyinterchangeablewithconventionalcartridges.
•Variedcircuitapplicationuses:pilotoperatedcheck,prell
valve, decompression valve, flow control valve, etc.
•Zerointernalpilotleakageoption:ZD105.
•Lowhysteresis,fastresponseoption:ZDN105.
Figure 36
Figure 37
Dynamic Functions (cont...)
CoverCVCS-**-ZD*-*2(9)-1*
Insert CVI-**-ZD(N)105-*-1*
CoverCVCS-**-ZDA*-*2(9)-*-1*
Insert CVI-**-ZD(N)105-*-1*
■ For fast response model CVI-**-ZDN105---
these seals are omitted.
▲ Size 03 pilot control valve to be ordered
separately. Recommended model Vickers
DG4V-3.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 71
Flow rate AP =
Area A
AP
, mm
2
Area A
AP
, in
2
Area A
BP
, mm
2
100
×
Stroke, mm
Stroke, mm
10
×
60
t
=
cm
3
∕min
cm
3
∕min
in
3
∕min
Flow rate BP =
100
×
10
×
60
t
=
Flow rate AP = × Stroke, in ×
60
t
=
Area A
BP
, in
2
in
3
∕min
× Stroke, in ×
60
t
=
Flow rate BP =
Calculation of Pilot Flow Rate for Given Response Time, t
secs:
1. Metric Units
2. Inch Units
Note:
The required piloting pressures and the actual response time will be influenced by:
1. Spring force (closing force)
2. Pressures acting on main ports A and B (opening forces)
3. Flow forces
Maximum Leakage
Seat leakage A to B port when spool is held closed.
Size Max. leakage at 100 bar (1450 psi) cm3/min (in3/min)
16 0.15 (0.009)
25 0.20 (0.012)
32 0.28 (0.017)
40 0.35 (0.021)
50 0,40 (0.024)
63 0,55 (0.033)
With spool seals omitted (ZDN105) leakage between spring, pilot chambers and
B port is as follows.
Size Max. leakage at 350 bar (5000 psi) cm3/min (in3/min):
AP to BP BP to B
or BP to AP or B to BP
16 650 (40) 30 (1.83)
25 700 (43) 40 (2.44)
32 800 (49) 50 (3.05)
40 1400 (86) 60 (3.64)
50 1700 (104) 80 (4.86)
63 2000 (122) 90 (5.46)
With spool seals tted (ZD105) there is no leakage between AP and BP, or
between BP and B.
Area ratio
A
A
:
A
B
:
A
BP
:
A
AP
Size 16 1 : 0.05 : 0.40 : 1.45
Sizes 25-63 1 : 0.05 : 0.30 : 1.35
Figure 38
Areas and Strokes
Valve Area mm2 (in
2
) Stroke
size A
A
A
B
A
BP
A
AP
mm (in)
16 (06) 203,58 (0.3155) 9,92 (0.154) 78,17 (0.1212) 291,67 (0.4521) 8,00 (0.315)
25 (08) 467,59 (0.7248) 22,79 (0.0353) 141,80 (0.2198) 632,18 (0.9799) 9,00 (0.354)
32 (09) 764,54 (1.1850) 39,06 (0.0605) 229,66 (0.3560) 1033,26 (1.6016) 11,00 (0.433)
40 (10) 1256,64 (1.9478) 62,78 (0.0973) 376,25 (0.5832) 1695,67 (2.6283) 14,50 (0.571)
50 (11) 2022,84 (3.1354) 99,57 (0.1543) 608,32 (0.9429) 2730,73 (4.2326) 19,00 (0.748)
63 (12) 3257,33 (5.0489) 162,21 (0.2514) 970,68 (1.5046) 4390,22 (6.8049) 25,00 (0.984)
Dynamic Functions (cont...)
A
A
A
B
A
BP
A
AP
A
B
AP
BP
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201272
Model Codes - Dynamic Functions
1 Seal Material
F3 - Special seals. See ‘‘Flu-
ids and Seals’’ on page 17.
Omit for standard seals.
2 Model
CVCS - Cartridge valve cover
to ISO 7368
3 Nominal size to ISO
7368 (DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
50 - 11 (NG50)
63 - 12 (NG63)
4 Function
ZD* - Dynamic with mount-
ing
face for size 03 pilot valve
ZDA* - Dynamic with stroke
limiter and mounting face for
size 03 pilot valve
*Code for optional threads,
see 5
5 Size 03 pilot valve
mounting bolt tappings
1 - Inch threads
3 - Metric threads
6 Plugs and orifice threads
B - G (BSPF) threads for
closure plugs; metric threads
for orifices
S - SAE threads for closure
plugs; UNF threads for
orifices
7 Seals
2 - Inch O-ring seals to ISO
3601
8 Mounting bolts
Sizes 16 to 40 only
9 - Metric mounting bolts
supplied
9 Adjuster mechanism
For model type ZDA* only
W - Wrench adjustment with
hex locknut
10 Design number, 1*
series
Subject to change. Installa-
tion
dimensions unchanged for
design numbers 10 to 19
inclusive.
See page 116 for sizes of fac-
tory-fitted standard orifices.
Other orifice sizes and loca-
tions can be fitted by spe-
cial arrangement with your
Eaton-Vickers representative.
Non-standard orifice require-
ments should be defined as
follows:
11 Pilot control orifice
location
Specify port location for non-
standard orifice, e.g. ‘‘AP’’,
followed by orifice size code,
see 12. Repeat as neces-
sary for further non-standard
requirements.
12 Orifice size
Specify non-standard orifice
size code, see tables on page
117.
CVCS Covers
Eaton-Vickers type “CVCS” cartridge covers featured in this
catalog conform to installation requirements of ISO 7368
and DIN 24342. All features must be specified when order-
ing; those in brackets () are optional or apply only to specific
models.
Metric Models
Metric bolt tappings and orifice threads; BSPF plugs.
Non-Metric Models
UNC bolt tappings; UNF orifice threads; SAE plugs; mounting
bolts not supplied.
(F3-) CVCS - ** - ZD (A) 3 - B 2 9 (-W) - 1* (-*** **)
(F3-) CVCS - ** - ZD (A) 1 - S 2 (-W) - 1* (-*** **)
1
1 119
4
4
2
2
9 113
3 10 12
10 125
5 6 7
6 7 8
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 73
CVI Inserts
All features must be specified when ordering; those in brack-
ets ( ) are optional.
Model Codes - Dynamic Functions
1 Seal Material
F3 - Special seals. See ‘‘Flu-
ids and Seals’’ on page 17.
Omit for standard seals.
2 Model
CVI - Cartridge valve insert
3 Nominal size to ISO
7368 (DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
50 - 11 (NG50)
63 - 12 (NG63)
4 Function
ZD105 - 1:1.05 ratio dynamic
(with piston seals to ensure
zero control port leakage)
ZDN105 - 1:1.05 ratio dy-
namic (without piston seals
for fast
response and low hysteresis)
5 Cracking pressure, bar
(psi)
For models ZD105
L - 1.0 (14.5)
M - 2.5 (36.3)
H - 4.5 (62.2)
For models ZDN105
L - 0.5 (7.3)
M - 2.0 (29)
H - 4.0 (58)
6 Design number, 1* se-
ries
Subject to change. Installa-
tion dimensions unchanged
for design numbers 10 to 19
inclusive.
Note: A nameplate is supplied with
each insert for xing to the cover to
identify the insert in use.
(F3-) CVI - ** - ZD(N)105 - * - 1*
1 2 43 65
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201274
Unless otherwise stated, performances are based on petro-
leum oil at 36 cSt (168 SUS) and at 50 C (122 F). For pressure
drops at other viscosities, see page 119.
Pressure Drop Through Insert
• = Rated flow point
Performance Data - Dynamic Functions
0
5
10
15
20
bar
CVI-32-ZD(N)105-*-1*
300
psi
200
100
0
Flow BtoA
Flow AtoB
Flow rate
300 600 900 1200 1500 L/min
0 400100 200 300 USgpm
Flow BtoA
Flow AtoB
100 200 300 400 L/min
0255075 100 USgpm
0
5
10
15
20
bar
CVI-16-ZD(N)105-*-1*
300
psi
200
100
0
Flow rate
0
5
10
15
20
bar
CVI-63-ZD(N)105-*-1*
300
psi
200
100
0
Flow BtoA
Flow AtoB
1000 20003000 4000 5000L/min
0
1250250 500 750 1000 USgpm
Flow rate
0
5
10
15
20
bar
CVI-50-ZD(N)105-*-1*
300
psi
200
100
0
600 1200 1800 2400 3000 L/min
mpgSU0
800200 400 600
Flow rate
Flow BtoA
Flow AtoB
0
5
10
15
20
bar
CVI-40-ZD(N)105-*-1*
300
psi
200
100
0
500100015002000L/min
Flow BtoA
Flow AtoB
5000 100 200 300 400USgpm
Flow rate
0
5
10
15
20
bar
CVI-25-ZD(N)105-*-1*
300
psi
200
100
0
Flow BtoA
Flow AtoB
200 400 600 8001000L/min
050 100 150 200 250USgpm
Flow rate
Pressuredrop
PressuredropPressuredrop
PressuredropPressuredrop
Pressuredrop
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 75
Dynamic Functions
Metric bolts (see table)
when -B29-isspecified
at modelcodepositions
6 7 8 on page 72
Boltsare notincluded
when -S2- is specified
Seepage120 for
recommendedVickers
bolt kits.
Locationfor optional
orifice AP
Forthread see table
A
Interface to ISO4401 size 03
(ANSI/B93.7M-D03)
4 holes tapped according to CVCS model code
5 on page 72:
For 5 = 1:#10-24UNC-2Bx12,7(0.5)deep
For 5 = 3:M5-6Hx12,0(0.47)deep
CVCS-**-ZD*-*2(9)-1*
CVCS-**-ZDA*-*2(9)-W-1*
Sizes16.25, 32 and 40
D
H
E
Kclearancefor removal
of completeassembly
A
A
F
G
Port X
Port Y
Port Z
1
Port Z
2
Orientationpin
J
Stroke limiter detail
CVCS-40-ZDA*-*2(9)-W-1*
Stroke limiter
10.0 (0.39) A/F
Hex. locknut
22.0 (0.87) A/F
Hex. locknut
22.0 (0.87) A/F
Stroke limiter
10.0(0.39) A/F
Stroke limiterdetail
CVCS-**-ZDA*-*2(9)-W-1*
sizes16.25 and 32
Locationfor optional
orificeZ
2
Forthread see table
B
max.
F
Mounting surface
CVI-**-ZD(N)105
Port B
Port A
Locationfor optional
orificeX
Forthread see table
Datum mounting
bolt position
of size 03 interface
C
TP
B
==
=
=
Nameplatelocated
on side Z
2
;also
2 holes forattachmentof
CVI(insert) nameplate
Dimensions mm (inches)
▲Size 03 pilot control valve to be ordered separately.
Recommended model Eaton-Vickers DG4V-3.
■ Recess in cover for insert engagement.
Valve Size
Dim. 16 25 32 40
A 65,0 (2.56) 85,0 (3.35) 02,0 (4.02) 125,0 (4.92)
B 68,8 (2.71) 89,0 (3.50) 106,0 (4.17) 129,0 (5.08)
C 85,0 (3.35) 81,0 (3.19) 82,0 (3.23) 95,0 (3.74)
D 95,0 (3.74) 100,0 (3.94) 100,0 (3.94) 120,0 (4.72)
E 99,0 (3.90) 103,5 (4.07) 103,5 (4.07) 124,3 (4.89)
F 119,0 (4.68) 139,0 (5.47) 156,0 (6.14) 186,6 (7.35)
G 175,1 (6.89) 211,1 (8.31) 241,1 (9.49) –
H 75,5 (2.97) 80,0 (3.15) 80,0 (3.15) 95,0 (3.74)
J 34,0 (1.34) 38,1 (1.5) 41,1 (1.62) 55,15 (2.17)
K 56,1 (2.21) 72,1 (2.84) 85,1 (3.35) 105,1 (4.14)
Bolts 4 x M8 x 100 4 x M12 x 100 4 x M16 x 110 4 x M20 x 130
Bolt torque 35 Nm 110 Nm 285 Nm 500 Nm
(26 lbf ft) (81 lbf ft) (210 lbf ft) (370 lbf ft)
Thread sizes for optional orifices
Model Orifice CVCS-**-ZD(A)*
Code Position Location Covers: Sizes
6 7 8 16, 25, 32, 40
(page 72)
B 2 9 AP
X M6-6H x
Z
2
8,0 (0.31) deep
S 2 AP
X ¼”-28 UNF-3B x
Z
2
8,0 (0.31)deep
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201276
Dynamic Functions
CVCS-50-ZD*-* 2-1*
CVCS-50-ZDA*-* 2-W-1*
120.0
(4.72)
140.0
(5.51)
115.0
(4.53)
Port X
Port Y
Port Z
1
66.1
(2.6)
Stroke limiter
15.0 (0.59) A/F
Hex. locknut
36.0 (1.42) A/F
Stroke limiterdetail
CVCS-50-ZDA
Lifting eyebolts
(M10) supplied
Mounting
surface
CVI-50-ZD(N)105
Port B
Port A
Locationfor
optionalorificeX
Forthread see
table
Locationfor optional
orifice AP
Forthread see table
Port Z
2.
Locationfor optionalorificeZ
2
For thread see table
140.0
(5.51)
140.0
(5.51)
144.5
(5.69)
206.1
(8.11)
Ø 33.0(1.3dia.)
Ø 22.0(0.87 dia.)
P
A
B
T
147.7
(5.81)
max.
Orientationpin
Datum mounting
bolt position of
size 03 interface
Interface to ISO4401 size 03
(ANSI/B93.7M-D03)
4 holes tapped according to CVCS model code 5 on page 72
= ==
=
=
Nameplatelocated
on side Z
2
;also
2 holes forattachmentof
CVI(insert) nameplate
Dimensions mm (inches)
For 5 = 1:#10-24UNC-2Bx12,7(0.5)deep
For 5 = 3:M5-6Hx12,0(0.47)deep
•
122,1 (4.81) clearance for removal of complete assembly.
▲ Size 03 pilot control valve to be ordered separately.
Recommended model Eaton-Vickers DG4V-3.
■ Recess in cover for insert engagement.
Thread sizes for optional orifices
Model Orifice
Code Position Location Thread
6 7
(page 72)
B 2 AP M6-6H x 8.0 (0.31) deep
X
Z
2
M8-6H x 8.0 (0.31) deep
S 2 AP ¼”-28 UNF-3B x 8.0 (0.31) deep
X
Z
2
¾”-24 UNF-2B x 11,0 (0.43) deep
8
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 77
Dynamic Functions
•
155,1 (6.11) clearance for removal of complete assembly.
▲ Size 03 pilot control valve to be ordered separately.
Recommended model Eaton-Vickers DG4V-3(S), see
GB-C- 2015.
■ Recess in cover for insert engagement.
Thread sizes for optional orifices
Model Orifice
Code Position Location Thread
6 7
(page 72)
B 2 AP M6-6H x 8,0 (0.31) deep
X
Z
2
M10-6H x 10,0 (0.39) deep
S 2 AP ¼”-28 UNF-3B x 8,0 (0.31) deep
X
Z
2
¾”-24 UNF-2B x 11,0 (0.43) deep
128.0 (5.04)
Port X
CVCS-63-ZD*-* 2-1*
CVCS-63-ZDA*-* 2-W-1*
Hex. locknut
38.0 (1.50) A/F
Stroke limiter
15,0 (0.59) A/F
Locationfor optional orifice Z
2
in portZ
2
For thread see table
Locationfor
optionalorificeX
Forthread see table
230.0
(9.06)
Mounting surface
P
150.8
(5.94)
154.5
(6.08)
75.0
(2.95)
CVI-63-ZD(N)105
Lifting eyebolts
(M10) supplied
Locationfor
optional
orificeAP
For thread
see table
A
B
T
Port Z
1
Port Z
2
Port Y
Datum
mounting
boltposition
of size 03
interface
21.5
(0.85)
3.8(0.15)
183.0
(7.2)
Orientationpin
3.8(0.15)
183.0 (7.2)
Port B
Port A
Stroke limiter detail
CVCS-63-ZDA
3.8(0.15)
Ø 33.0
(1.23dia.)
Ø 49.0
(1.93dia.)
Interface to ISO4401 size 03
(ANSI/B93.7M-D03)
4 holes tapped accordingto
CVCS model code ¤
on page 72:
For5 =1: #10-24 UNC-2B x
12.7(0.5) deep
For5 =3:M5-6H x12,0
(0.47) deep
100.0
(3.93)
= =
=
=
Nameplatelocatedon
side Z
2
;also2holes
forattachment of CVI
(insert) nameplate
Dimensions mm (inches)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201278
Valvistor
®
Proportional Throttles
CVCS-**-HFV, 1* Series, Covers and CVI-**-HFV-A/B, 1* Series, Inserts
General Description
Eaton’s Vickers
®
HFV (Hydraulic Feedback Valvistor
®
) range of
slip-in cartridge valves uses a self-regulating hydraulic design
for the control of flow rate by a current-controlled PWM sig-
nal. The design achieves servo-type control of the main pop-
pet without using an electrical feedback transducer.
The construction and features of these valves open up a wide
range of applications with hydraulic cylinders and motors.
Such applications include ie casting, deep drawn presses,
injection molding, container handling, shovel loaders, forestry
and dump trucks. With the addition of HFV valves to the
established ISO 7368 (DIN 24342) cartridge valves, Eaton has
further enhanced an already comprehensive range.
Valvistor Technology
In “Valvistor” designs a main poppet amplifies a small flow
through the pilot circuit, comparable to a transistor. Thus
the name “Valvistor”, derived from “valve” and “transis-
tor”. Figures 39 and 40 show the construction of proportional
throttles to ISO 7368. In both cases a Vickers type KTG4V-3S
proportional valve is used as the pilot control valve. KBTG4V-
3S-EN427 (refer catalog V-VLDI-MS-04-E) & KBFTG4V-3S-
EN427 (refer catalog V-VLPO-MC007-E1) can also be used
as pilot valves. Hydraulic position feedback is obtained by
providing the main poppet with a longitudinal slot (5) in its
cylindrical surface. This slot, together with a metering edge
inside the sleeve, forms a variable orifice between the inlet
of the valve and the volume above the main poppet (3). When
the valve is closed and the main poppet is seated, the variable
orifice area is almost closed.
Figure 39
Construction for flow direction A to B; poppet in the closed
(no flow) condition. (Note: For flow A-B, poppet drilled from
A.)
Figure 40
Construction for flow direction B to A; poppet partially open.
(Note: For flow B-A, poppet drilled from B.)
Basic Characteristics
Nominal Sizes:
ISO 7368 DIN 24342
06 NG16
08 NG25
09 NG32
10 NG40
11 NG50
12 NG63
Maximum operating pressure ......................350 bar (5000 psi)
Flow ratings ............................. up to 2160 L/min (571 USgpm)
Catalog data based on pilot valve KTG4V-3S-EN427.
As the main poppet opens, the variable orifice area increases.
The slot is a part of one leg of a hydraulic bridge circuit and
provides an internal position feedback. With the pilot throttle
valve closed (figure 39), there is no pilot flow through the
closed-off slot in the seated poppet. The pressure above the
main poppet (3) is equal to the pressure at the valve inlet (1),
due to the controlled small opening at the variable orifice. As
the upper area of the poppet is greater than the area facing
the inlet (1), the poppet is held against its seat (6) by a force
proportional to the difference between valve inlet and outlet
pressures.
Opening the pilot throttle valve (figure 40) lowers the pressure
in volume (3) allowing the main poppet to move off its seat.
As this occurs the slot passes the metering edge (7), open-
ing the variable orifice and allowing flow through the pilot
circuit. Initially the flow through the pilot valve equals the
flow through the slot plus the volume displaced by the open-
ing movement of the main poppet. The main poppet moves
upwards until the pressure drops across the slot and the pilot
effects a force balance on the poppet. The poppet is then
held in a steady-state condition with equal flow across the
slot and the pilot.
If the flow through the pilot valve is reduced (by reducing the
command current to the solenoid), the force balance of the
main poppet is again disturbed and the main poppet moves
downwards reducing
the slot area and decreasing flow to the
upper chamber until the force balance is restored. Thus by
controlling flow through the pilot valve, the main poppet can
be controlled in any position from fully closed to fully open. In
this manner a very simple, effective servo-control of the main
poppet is obtained. If the outlet pressure exceeds inlet pres-
sure when the pilot valve is closed, the main poppet allows
reverse flow (see CVCS model code). The main valve function
is determined by the type of pilot fitted.
If pressure compensation is added to the pilot stage, the
complete valve is pressure compensated. If a pilot relief valve
is fitted, the main stage operates as a relief valve. As the pilot
flow is returned to the valve outlet (i.e. no “drain” connec-
tion) the valve is energy efficient. Therefore the position of
the main poppet is controlled by a closed-loop system with
a variable orifice in the poppet acting as the internal position
feedback element. The command signal in this feedback sys-
tem is pilot flow, as set at the proportional pilot throttle valve
(4).
6
5
4
1
2
Inlet A
3
Outlet B
7
1
2
3
4
Outlet A
Inlet B
7
6
General Description
Eaton’s Vickers
®
HFV (Hydraulic Feedback Valvistor
®
) range of
slip-in cartridge valves uses a self-regulating hydraulic design
for the control of flow rate by a current-controlled PWM sig-
nal. The design achieves servo-type control of the main pop-
pet without using an electrical feedback transducer.
The construction and features of these valves open up a wide
range of applications with hydraulic cylinders and motors.
Such applications include ie casting, deep drawn presses,
injection molding, container handling, shovel loaders, forestry
and dump trucks. With the addition of HFV valves to the
established ISO 7368 (DIN 24342) cartridge valves, Eaton has
further enhanced an already comprehensive range.
Valvistor Technology
In “Valvistor” designs a main poppet amplifies a small flow
through the pilot circuit, comparable to a transistor. Thus
the name “Valvistor”, derived from “valve” and “transis-
tor”. Figures 39 and 40 show the construction of proportional
throttles to ISO 7368. In both cases a Vickers type KTG4V-3S
proportional valve is used as the pilot control valve. KBTG4V-
3S-EN427 (refer catalog V-VLDI-MS-04-E) & KBFTG4V-3S-
EN427 (refer catalog V-VLPO-MC007-E1) can also be used
as pilot valves. Hydraulic position feedback is obtained by
providing the main poppet with a longitudinal slot (5) in its
cylindrical surface. This slot, together with a metering edge
inside the sleeve, forms a variable orifice between the inlet
of the valve and the volume above the main poppet (3). When
the valve is closed and the main poppet is seated, the variable
orifice area is almost closed.
Figure 39
Construction for flow direction A to B; poppet in the closed
(no flow) condition. (Note: For flow A-B, poppet drilled from
A.)
Figure 40
Construction for flow direction B to A; poppet partially open.
(Note: For flow B-A, poppet drilled from B.)
Basic Characteristics
Nominal Sizes:
ISO 7368 DIN 24342
06 NG16
08 NG25
09 NG32
10 NG40
11 NG50
12 NG63
Maximum operating pressure ......................350 bar (5000 psi)
Flow ratings ............................. up to 2160 L/min (571 USgpm)
Catalog data based on pilot valve KTG4V-3S-EN427.
As the main poppet opens, the variable orifice area increases.
The slot is a part of one leg of a hydraulic bridge circuit and
provides an internal position feedback. With the pilot throttle
valve closed (figure 39), there is no pilot flow through the
closed-off slot in the seated poppet. The pressure above the
main poppet (3) is equal to the pressure at the valve inlet (1),
due to the controlled small opening at the variable orifice. As
the upper area of the poppet is greater than the area facing
the inlet (1), the poppet is held against its seat (6) by a force
proportional to the difference between valve inlet and outlet
pressures.
Opening the pilot throttle valve (figure 40) lowers the pressure
in volume (3) allowing the main poppet to move off its seat.
As this occurs the slot passes the metering edge (7), open-
ing the variable orifice and allowing flow through the pilot
circuit. Initially the flow through the pilot valve equals the
flow through the slot plus the volume displaced by the open-
ing movement of the main poppet. The main poppet moves
upwards until the pressure drops across the slot and the pilot
effects a force balance on the poppet. The poppet is then
held in a steady-state condition with equal flow across the
slot and the pilot.
If the flow through the pilot valve is reduced (by reducing the
command current to the solenoid), the force balance of the
main poppet is again disturbed and the main poppet moves
downw
ards reducing the slot area and decreasing flow to the
upper chamber until the force balance is restored. Thus by
controlling flow through the pilot valve, the main poppet can
be controlled in any position from fully closed to fully open. In
this manner a very simple, effective servo-control of the main
poppet is obtained. If the outlet pressure exceeds inlet pres-
sure when the pilot valve is closed, the main poppet allows
reverse flow (see CVCS model code). The main valve function
is determined by the type of pilot fitted.
If pressure compensation is added to the pilot stage, the
complete valve is pressure compensated. If a pilot relief valve
is fitted, the main stage operates as a relief valve. As the pilot
flow is returned to the valve outlet (i.e. no “drain” connec-
tion) the valve is energy efficient. Therefore the position of
the main poppet is controlled by a closed-loop system with
a variable orifice in the poppet acting as the internal position
feedback element. The command signal in this feedback sys-
tem is pilot flow, as set at the proportional pilot throttle valve
(4).
6
5
4
1
2
Inlet A
3
Outlet B
7
1
2
3
4
Outlet A
Inlet B
7
6
General Description
Eaton’s Vickers
®
HFV (Hydraulic Feedback Valvistor
®
) range of
slip-in cartridge valves uses a self-regulating hydraulic design
for the control of flow rate by a current-controlled PWM sig-
nal. The design achieves servo-type control of the main pop-
pet without using an electrical feedback transducer.
The construction and features of these valves open up a wide
range of applications with hydraulic cylinders and motors.
Such applications include ie casting, deep drawn presses,
injection molding, container handling, shovel loaders, forestry
and dump trucks. With the addition of HFV valves to the
established ISO 7368 (DIN 24342) cartridge valves, Eaton has
further enhanced an already comprehensive range.
Valvistor Technology
In “Valvistor” designs a main poppet amplifies a small flow
through the pilot circuit, comparable to a transistor. Thus
the name “Valvistor”, derived from “valve” and “transis-
tor”. Figures 39 and 40 show the construction of proportional
throttles to ISO 7368. In both cases a Vickers type KTG4V-3S
proportional valve is used as the pilot control valve. KBTG4V-
3S-EN427 (refer catalog V-VLDI-MS-04-E) & KBFTG4V-3S-
EN427 (refer catalog V-VLPO-MC007-E1) can also be used
as pilot valves. Hydraulic position feedback is obtained by
providing the main poppet with a longitudinal slot (5) in its
cylindrical surface. This slot, together with a metering edge
inside the sleeve, forms a variable orifice between the inlet
of the valve and the volume above the main poppet (3). When
the valve is closed and the main poppet is seated, the variable
orifice area is almost closed.
Figure 39
Construction for flow direction A to B; poppet in the closed
(no flow) condition. (Note: For flow A-B, poppet drilled from
A.)
Figure 40
Construction for flow direction B to A; poppet partially open.
(Note: For flow B-A, poppet drilled from B.)
Basic Characteristics
Nominal Sizes:
ISO 7368 DIN 24342
06 NG16
08 NG25
09 NG32
10 NG40
11 NG50
12 NG63
Maximum operating pressure ......................350 bar (5000 psi)
Flow ratings ............................. up to 2160 L/min (571 USgpm)
Catalog data based on pilot valve KTG4V-3S-EN427.
As the main poppet opens, the variable orifice area increases.
The slot is a part of one leg of a hydraulic bridge circuit and
provides an internal position feedback. With the pilot throttle
valve closed (figure 39), there is no pilot flow through the
closed-off slot in the seated poppet. The pressure above the
main poppet (3) is equal to the pressure at the valve inlet (1),
due to the controlled small opening at the variable orifice. As
the upper area of the poppet is greater than the area facing
the inlet (1), the poppet is held against its seat (6) by a force
proportional to the difference between valve inlet and outlet
pressures.
Opening the pilot throttle valve (figure 40) lowers the pressure
in volume (3) allowing the main poppet to move off its seat.
As this occurs the slot passes the metering edge (7), open-
ing the variable orifice and allowing flow through the pilot
circuit. Initially the flow through the pilot valve equals the
flow through the slot plus the volume displaced by the open-
ing movement of the main poppet. The main poppet moves
upwards until the pressure drops across the slot and the pilot
effects a force balance on the poppet. The poppet is then
held in a steady-state condition with equal flow across the
slot and the pilot.
If the flow through the pilot valve is reduced (by reducing the
command current to the solenoid), the force balance of the
main poppet is again disturbed and the main poppet moves
downwards reducing the slot area and decreasing flow to the
upper chamber until the force balance is restored. Thus by
controlling flow through the pilot valve, the main poppet can
be controlled in any position from fully closed to fully open. In
this manner a very simple, effective servo-control of the main
poppet is obtained. If the outlet pressure exceeds inlet pres-
sure when the pilot valve is closed, the main poppet allows
reverse flow (see CVCS model code). The main valve function
is determined by the type of pilot fitted.
If pressure compensation is added to the pilot stage, the
complete valve is pressure compensated. If a pilot relief valve
is fitted, the main stage operates as a relief valve. As the pilot
flow is returned to the valve outlet (i.e. no “drain” connec-
tion) the valve is energy efficient. Therefore the position of
the main poppet is controlled by a closed-loop system with
a variable orifice in the poppet acting as the internal position
feedback element. The command signal in this feedback sys-
tem is pilot flow, as set at the proportional pilot throttle valve
(4).
6
5
4
1
2
Inlet A
3
Outlet B
7
1
2
3
4
Outlet A
Inlet B
7
6
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 79
General Description
Eaton’s Vickers
®
HFV (Hydraulic Feedback Valvistor
®
) range of
slip-in cartridge valves uses a self-regulating hydraulic design
for the control of flow rate by a current-controlled PWM sig-
nal. The design achieves servo-type control of the main pop-
pet without using an electrical feedback transducer.
The construction and features of these valves open up a wide
range of applications with hydraulic cylinders and motors.
Such applications include ie casting, deep drawn presses,
injection molding, container handling, shovel loaders, forestry
and dump trucks. With the addition of HFV valves to the
established ISO 7368 (DIN 24342) cartridge valves, Eaton has
further enhanced an already comprehensive range.
Valvistor Technology
In “Valvistor” designs a main poppet amplifies a small flow
through the pilot circuit, comparable to a transistor. Thus
the name “Valvistor”, derived from “valve” and “transis-
tor”. Figures 39 and 40 show the construction of proportional
throttles to ISO 7368. In both cases a Vickers type KTG4V-3S
proportional valve is used as the pilot control valve. KBTG4V-
3S-EN427 (refer catalog V-VLDI-MS-04-E) & KBFTG4V-3S-
EN427 (refer catalog V-VLPO-MC007-E1) can also be used
as pilot valves. Hydraulic position feedback is obtained by
providing the main poppet with a longitudinal slot (5) in its
cylindrical surface. This slot, together with a metering edge
inside the sleeve, forms a variable orifice between the inlet
of the valve and the volume above the main poppet (3). When
the valve is closed and the main poppet is seated, the variable
orifice area is almost closed.
Figure 39
Construction for flow direction A to B; poppet in the closed
(no flow) condition. (Note: For flow A-B, poppet drilled from
A.)
Figure 40
Construction for flow direction B to A; poppet partially open.
(Note: For flow B-A, poppet drilled from B.)
Basic Characteristics
Nominal Sizes:
ISO 7368 DIN 24342
06 NG16
08 NG25
09 NG32
10 NG40
11 NG50
12 NG63
Maximum operating pressure ......................350 bar (5000 psi)
Flow ratings ............................. up to 2160 L/min (571 USgpm)
Catalog data based on pilot valve KTG4V-3S-EN427.
As the main poppet opens, the variable orifice area increases.
The slot is a part of one leg of a hydraulic bridge circuit and
provides an internal position feedback. With the pilot throttle
valve closed (figure 39), there is no pilot flow through the
closed-off slot in the seated poppet. The pressure above the
main poppet (3) is equal to the pressure at the valve inlet (1),
due to the controlled small opening at the variable orifice. As
the upper area of the poppet is greater than the area facing
the inlet (1), the poppet is held against its seat (6) by a force
proportional to the difference between valve inlet and outlet
pressures.
Opening the pilot throttle valve (figure 40) lowers the pressure
in volume (3) allowing the main poppet to move off its seat.
As this occurs the slot passes the metering edge (7), open-
ing the variable orifice and allowing flow through the pilot
circuit. Initially the flow through the pilot valve equals the
flow through the slot plus the volume displaced by the open-
ing movement of the main poppet. The main poppet moves
upwards until the pressure drops across the slot and the pilot
effects a force balance on the poppet. The poppet is then
held in a steady-state condition with equal flow across the
slot and the pilot.
If the flow through the pilot valve is reduced (by reducing the
command current to the solenoid), the force balance of the
main poppet is again disturbed and the main poppet moves
downwards reducing the slot area and decreasing flow to the
upper chamber until the force balance is restored. Thus by
controlling flow through the pilot valve, the main poppet can
be controlled in any position from fully closed to fully open.
In
this manner a very simple, effective servo-control of the
main
poppet is obtained. If the outlet pressure exceeds inlet pres-
sure when the pilot valve is closed, the main poppet allows
reverse flow (see CVCS model code). The main valve function
is determined by the type of pilot fitted.
If pressure compensation is added to the pilot stage, the
complete valve is pressure compensated. If a pilot relief valve
is fitted, the main stage operates as a relief valve. As the pilot
flow is returned to the valve outlet (i.e. no “drain” connec-
tion) the valve is energy efficient. Therefore the position of
the main poppet is controlled by a closed-loop system with
a variable orifice in the poppet acting as the internal position
feedback element. The command signal in this feedback sys-
tem is pilot flow, as set at the proportional pilot throttle valve
(4).
6
5
4
1
2
Inlet A
3
Outlet B
7
1
2
3
4
Outlet A
Inlet B
7
6
General Description
Eaton’s Vickers
®
HFV (Hydraulic Feedback Valvistor
®
) range of
slip-in cartridge valves uses a self-regulating hydraulic design
for the control of flow rate by a current-controlled PWM sig-
nal. The design achieves servo-type control of the main pop-
pet without using an electrical feedback transducer.
The construction and features of these valves open up a wide
range of applications with hydraulic cylinders and motors.
Such applications include ie casting, deep drawn presses,
injection molding, container handling, shovel loaders, forestry
and dump trucks. With the addition of HFV valves to the
established ISO 7368 (DIN 24342) cartridge valves, Eaton has
further enhanced an already comprehensive range.
Valvistor Technology
In “Valvistor” designs a main poppet amplifies a small flow
through the pilot circuit, comparable to a transistor. Thus
the name “Valvistor”, derived from “valve” and “transis-
tor”. Figures 39 and 40 show the construction of proportional
throttles to ISO 7368. In both cases a Vickers type KTG4V-3S
proportional valve is used as the pilot control valve. KBTG4V-
3S-EN427 (refer catalog V-VLDI-MS-04-E) & KBFTG4V-3S-
EN427 (refer catalog V-VLPO-MC007-E1) can also be used
as pilot valves. Hydraulic position feedback is obtained by
providing the main poppet with a longitudinal slot (5) in its
cylindrical surface. This slot, together with a metering edge
inside the sleeve, forms a variable orifice between the inlet
of the valve and the volume above the main poppet (3). When
the valve is closed and the main poppet is seated, the variable
orifice area is almost closed.
Figure 39
Construction for flow direction A to B; poppet in the closed
(no flow) condition. (Note: For flow A-B, poppet drilled from
A.)
Figure 40
Construction for flow direction B to A; poppet partially open.
(Note: For flow B-A, poppet drilled from B.)
Basic Characteristics
Nominal Sizes:
ISO 7368 DIN 24342
06 NG16
08 NG25
09 NG32
10 NG40
11 NG50
12 NG63
Maximum operating pressure ......................350 bar (5000 psi)
Flow ratings ............................. up to 2160 L/min (571 USgpm)
Catalog data based on pilot valve KTG4V-3S-EN427.
As the main poppet opens, the variable orifice area increases.
The slot is a part of one leg of a hydraulic bridge circuit and
provides an internal position feedback. With the pilot throttle
valve closed (figure 39), there is no pilot flow through the
closed-off slot in the seated poppet. The pressure above the
main poppet (3) is equal to the pressure at the valve inlet (1),
due to the controlled small opening at the variable orifice. As
the upper area of the poppet is greater than the area facing
the inlet (1), the poppet is held against its seat (6) by a force
proportional to the difference between valve inlet and outlet
pressures.
Opening the pilot throttle valve (figure 40) lowers the pressure
in volume (3) allowing the main poppet to move off its seat.
As this occurs the slot passes the metering edge (7), open-
ing the variable orifice and allowing flow through the pilot
circuit. Initially the flow through the pilot valve equals the
flow through the slot plus the volume displaced by the open-
ing movement of the main poppet. The main poppet moves
upwards until the pressure drops across the slot and the pilot
effects a force balance on the poppet. The poppet is then
held in a steady-state condition with equal flow across the
slot and the pilot.
If the flow through the pilot valve is reduced (by reducing the
command current to the solenoid), the force balance of the
main poppet is again disturbed and the main poppet moves
downwards reducing
the slot area and decreasing flow to the
upper chamber until the force balance is restored. Thus by
controlling flow through the pilot valve, the main poppet can
be controlled in any position from fully closed to fully open. In
this manner a very simple, effective servo-control of the main
poppet is obtained. If the outlet pressure exceeds inlet pres-
sure when the pilot valve is closed, the main poppet allows
reverse flow (see CVCS model code). The main valve function
is determined by the type of pilot fitted.
If pressure compensation is added to the pilot stage, the
complete valve is pressure compensated. If a pilot relief valve
is fitted, the main stage operates as a relief valve. As the pilot
flow is returned to the valve outlet (i.e. no “drain” connec-
tion) the valve is energy efficient. Therefore the position of
the main poppet is controlled by a closed-loop system with
a variable orifice in the poppet acting as the internal position
feedback element. The command signal in this feedback sys-
tem is pilot flow, as set at the proportional pilot throttle valve
(4).
6
5
4
1
2
Inlet A
3
Outlet B
7
1
2
3
4
Outlet A
Inlet B
7
6
Features and Benefits
The HFV range with its simplicity, cost effectiveness and per-
formance level can be applied in almost all applications from
high performance industrial areas such as injection molding
to those applications just requiring proportional functionality.
The data in this catalog is based on the specially developed
proportional pilot KTG4V-3S-60-EN427. The functional flexibil-
ity of the Valvistor may be extended by the use of different
pilots like KBTG4V-3S-60-EN427, KBFTG4V3-3S-60-EN427.
Contact Eaton for application assistance.
In addition, the HFV range offers:
Unequalled simplicity No inner electrical feedback loop and associated electronics
Two models: for flow direction A to B or B to A Provides system design options and flexibility
Free flow in reverse direction Provides system design options and flexibility
Poppet valve construction Provides tight shut-off and load holding
Internal pilot flow Simple installation and energy efficient
Very fast response Provides the system designer with high dynamic
acceleration/velocity/deceleration profiles for demanding performance
requirements such as:
• Cylinder position control including lift/lower
• Rotary actuator dynamic control
• Velocity profile control
Smooth closing and opening Shock-free start-up and shut-off allow high velocities to be maintained
for longer periods, thus reducing cycle times
Low hysteresis 8% to 1% depending on pilot valve used
Integral feedback Internal hydraulic feedback provides effective, low-cost position control
of main poppet
Repeatability Provides repeatable and accurate actuator velocity to a given operator
command input
Electrical operation Current-controlled PWM signal
Pressure compensation Can be achieved by pressure compensating pilot stage only
Cost-effective design Provides multiple functions such as pressure compensation, flow control
and reverse free flow check valve
Optional manual override Pin design
Compatible with antiwear hydraulic oils and phosphate esters (non alkyl) Flexible application for broad range of installations
Electrical connections DIN or conduit box Provides design
to meet OEM or user preference
Inherent benefits of Eaton cartridge valve technology are applicable to the Valvistor range.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201280
Functional Symbols
Valvistor® Proportional
Throttle Valves
Complete valve assembly comprises
insert, cover and proportional solenoid
operated pilot valve (pilot valve to be
specified and ordered separately).
Models without free reverse flow capa-
bility
Use cover type CVCS-**-HFV*-W-
*2(9)-1*
Simplified symbol
Models with free reverse flow capability
Use cover type CVCS-**-HFV*-*2(9)-1*
Note: Omit W from model code
position 6
Simplified symbol
Direction of controlled flow
A to B
Use insert type CVI-**-HFV-20-A-***-1*
B to A
Use insert type CVI-**-HFV-20-B-***-1*
A
B
XY
ABPT
Z
1
Z
2
P
T
BA
A
B
XY
ABPT
Z
1
Z
2
P
T
BA
A
B
XY
A
B
PT
Z
1
Z
2
P
T
B
A
A
B
XY
A
BPT
Z
1
Z
2
P
T
B
A
AP
2
AP
1
AP
2
AP
1
PAPA
Z
2
B
A
Y
Z
2
B
A
Y
Z
2
B
A
Y
Z
2
B
A
Y
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 81
Model Codes Valvistor® Proportional
Throttle Valves
(F3-) CVI - ** - HFV - 20 - * - *** - 1*
(F3-) CVCS - ** - HFV - * - * - * 2 (9) - 1*
1
Seal Material
F3 - Seals for phosphate
esters or chlorinated hydro-
carbons. Omit for all other
fluid types.
2
Model
CVI - Cartridge valve insert
3
Nominal size to ISO
7368 (DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
50 - 11 (NG50)
63 - 12 (NG63)
1
Fluid compatibility
F3 - Seals for phosphate
esters or chlorinated hydro-
carbons. Omit for all other
fluid types.
2
Model
CVCS - Cartridge valve cover
to ISO 7368
3
Nominal size to ISO 7368
(DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
50 - 11 (NG50)
63 - 12 (NG63)
7
Flow capacity at p = 10 bar (145 psi)
Size/Flow Direction Code L/min USgpm
16A 21 210 55
16B 21 210 55
25A 40 405 107
25B 32 320 107
32A 63 630 166
32B 63 630 166
40A 90 900 238
40B 81 900 238
50A 130 1305 345
50B 130 1305 345
63A 216 2160 571
63B 216 2160 571
7
Thread/seal combina-
tion
B - G (BSPF) threads for
gage ports; metric
threads for orifices (only
available when ‘‘3’’ speci-
fied at position 5 )
S - SAE O-ring gage; inch
threads for orifices (only
available when ‘‘1’’ speci-
fied at position 5 )
1
1 4
2
2
3 9
3 5 64
6 75 8
7 8
10
4
Flow direction
HFV - Hydraulic feedback,
Valvistor
5
Area ratio
20 - 1:2 area ratio
6
Flow direction
A - For flow A to B
B - For flow B to A
4
Ty pe
HFV - Hydraulic feedback,
Valvistor
5
Size 3 pilot valve mount-
ing bolts
1 - Imperial threads
3 - Metric threads
6
Control option
W - Mainstage Valvistor with-
out free reverse flow.
Omit for standard mainstage
Valvistor with free reverse
flow capability
8
Seals
2 - Inch O-ring seals to ISO
3601
9
Mounting bolts
Sizes 16-40 only
9 - Metric mounting bolts
supplied as standard when
‘‘B’’ (BSPF threads) specified
at position 7 Omit for sizes
50 and 63
10
Design number, 1*
series
Subject to change. Installa-
tion dimensions unaltered f
or
design numbers 10 to 19.
Valvistor Throttle Covers (Suitable for flows A to B and B to A)
Pilot Valve
For operation with 12V control system:
K(B)(F)TG4V-3S2B 08N-(V)M-*** ***
*(1)G5-60-EN427
For operation with 24V control system:
K(B)(F)TG4V-3S2B 08N-(V)M-*** ***
*(1)H5-60-EN427
For full technical details of this valve
including types of electrical connec-
tions, see Eaton’s Vickers Slip-in Car-
tridge Valve Catalog.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201282
Operating Data
Data is typical with fluid at 36 cSt (168 SUS) and 50C (122F).
Maximum pressure 350 bar (5000 psi)
Flow ratings See model code (CVI)
Controlled flow characteristics See graphs on pages 83 and 84
Pressure drop, free return flow See graphs on page 85
Dynamic performance: 06 08 09 10 11 12
Step input ▲ response at p = 10 bar (145 psi) (NG16) (NG25) (NG32) (NG40) (NG50) (NG63)
Opening time (ms) 50 85 130 240 280 340
Closing time (ms) 40 60 85 130 200 300
Hysteresis ▲ <8% <8% <8% <8% <8% <8%
Repeatability ▲ <3% <3% <3% <3% <3% <3%
Area ratio (all sizes) 2:1
Hydraulic fluids See page 17
Temperature limits See page 17
Filtration and viscosity requirements See page 19
Mounting bolts and assembly torques See page 120
Seal kits See page 122
Mass See page 126
▲
Data quoted with KTG4V-3S---60-EN427 as pilot valve, driven by EEA-PAM-523-A-32 (Economic Performance)
▲ For standard & high performance and On-Board-Electronics (OBE) options, see “Valvistor line extension“ on page 87.
Pilot Valve Electrical Data
Full performance data and model code breakdown can be found in Eaton’s Vickers Slip-in Cartridge Valve Catalog.
Type KTG4V-3S---60-EN427 (denotes special spool)
Max. current at 50
0
C (122F) Coil type
G H
3.2A 1.6A
Coil resistance at 20
0
C (68F) 1.8 ohms 7.3 ohms
Coil inductance at 1000 Hz 7.5 mH 29 mH
Relative duty factor Continuous rating (ED = 100%)
Electrical protection with plugs fitted correctly IEC 947 class IP65
Recommended amplifier EEA-PAM-523-A-32
▲
For standard & high performance and On-Board-Electronics (OBE) options, see “Valvistor line extension“ on page 87.
Performance Characteristics
The graphs on the following two pages show typical flow characteristics for different values of input current to pilot valve plot-
ted against flow rate and valve pressure drop. They are based on a standard HFV insert and cover with a KTG4V-3S---EN427
pilot valve. A minimum pressure drop of 5 bar (72 psi) is recommended. Higher pressure drops result in improved control.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 83
44%
38%
0
000500014
00
0030002000
50 100150 200 250 300
Pressure drop
500
400
300
200
100
0
140
120
100
80
60
40
20
0
USgpm L/min
Flow rate
Size 16
Size 25
Size 32
Flow A
B wolFB A
USgpm
70
L/min
60
50
40
30
0
10
20
250
200
0
50
100
150
0
000500010 400030002000
50%
38%
44%
32%
50 100 150 200 250 300
100%
75%
bar bar
psi
Pressure drop
Flow rate
100%
%001%001
100%
100%
50%
75%
75%
75%
75%
44%
38%
50%
38%
44%
32%
50%
38%
63%
44%
38%
50%
38%
63%
0
000500014
00
0030002000
50 100 150 200 250 300
psi
bar
psi
bar
psi
bar
psi
bar
psi
Pressure drop
0
000500014
00
0030002000
50 100 150 200 250 300
0
000500014
00
0030002000
50 100 150 200 250 300
Pressure drop
0
000500010 400030002000
50 100 150 200 250 300
Pressure drop
0
000500010 400030002000
50 100 150 200 250 300
Pressure drop
USgpm
70
L/min
60
50
40
30
0
10
20
250
200
0
50
100
150
Flow rate
500
400
300
200
100
0
140
120
100
80
60
40
20
0
200
0
50
100
150
800
700
0
100
200
300
400
500
600
USgpm L/min
USgpm L/min
Flow rateFlow rate
500
400
300
200
100
0
140
120
100
80
60
40
20
0
200
0
50
100
150
800
700
0
100
200
300
400
500
600
USgpm L/min
Flow rate
Flow/Pressure Drop vs Solenoid Current
(% of max.)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201284
200
Size 40
Size 50
Size 63
Flow A
F
Bl
ow B A
0
0005000
1400
0030002000
50 100 150 200250 300
psi
Pressure drop
0
000500010400030002000
50 100 150 200250 300
psi
Pressure drop
0
0005000
1400
0030002000
50 100 150 200250 300
psi
Pressure drop
0
000500010400030002000
50 100 150 200 250 300
psi
Pressure drop
0
000500010400030002000
50 100 150 200 250 300
psi
bar
bar
ba b
ra
r
bar
bar
Pressure drop
0
0005000
1400
0030002000
50 100150 200250 300
psi
Pressure drop
USgpmL/min
400
300
0
100
200
250
1250
0
500
1000
750
Flow rate
82%
63%
75%
57%
100% 94%
1500
USgpm L/min
400
300
0
100
200
250
1250
0
500
1000
750
Flow rate
1500
75%
69%
57%
100%
94%
82%
USgpm L/min
500
400
300
0
100
200
2000
1750
0
500
1000
1500
Flow rate
USgpmL/min
Flow rate
USgpm L/min
Flow rate
USgpm
700
L/min
600
500
400
300
0
100
200
2500
2000
0
500
1000
1500
Flow rate
100% 88%
75%
63%
50%
38%
100% 88%
75%
63%
50%
38%
100% 82%
75%
69%
63%
50%
100%
82%
75%
69%
57%
50%
1250
750
250
500
400
300
0
100
2000
1750
0
500
1000
1500
1250
750
250
88%
700
600
500
400
300
0
100
200
2500
2000
0
500
1000
1500
Flow/Pressure Drop vs Solenoid Current
(% of max.)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 85
Size 16
Size 32
Size 50
Size 25
Size 40
Size 63
Pressure drop
Flow rate
psi bar
L/min
USgpm
80
70
60
50
40
30
20
10
00
1
2
3
4
5
6
050100 150 200
01020304050
L/min
USgpm
0 100 200 300 400
020406080 100 120
psi bar
80
60
40
20
00
1
2
8
4
5
6
10
9
3
7
140
120
100
Pressure drop
Flow rate
L/min
USgpm
0 300100 400200
0 150 200100 25050
psi bar
80
60
40
20
00
1
2
8
4
5
6
10
9
3
7
140
120
100
Pressure drop
Flow rate
L/min
USgpm
0 250 500 750 1000
050 100 150 200 250
psi bar
80
60
40
20
00
1
2
8
4
5
6
10
9
3
7
140
120
100
Pressure drop
Flow rate
L/min
USgpm
0 500 1000 1500 2000
0 100 200 300 400 500 600
psi bar
80
60
40
20
00
1
2
8
4
5
6
10
9
3
7
140
120
100
Pressure drop
Flow rate
L/min
USgpm
0 500 1000 1500
0 100 200 300 400
psi bar
80
60
40
20
00
1
2
8
4
5
6
10
9
3
7
140
120
100
Pressure drop
Flow rate
450
500 600 700 800
2500
Pressure Drops - Free Return Flow
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201286
EATON Valvistor Cartridge Valve V-VLPO-MC011-E April 2009
12
Installation Dimensions in mm (inches)
Port Z
1
H
4 holes thru Ø K
Metric mounting bolts, M
supplied with sizes 16-40 only
when -B29- specified
at model code positions and
3rd angle
projection
CVCS-**-HFV*
B
C
C
J
AE
A D
Port X
Port Z
2
Port Y
Profile of
size 16 only
Location pin
Datum bolt hole for
size 03 mounting face
(CVCS-**-HFV*-W only)
T
P
S
G
89,6 (3.53)
5 6
G min. for removal
of cover assembly
Valve A sq. B C max. D E max. G H J Ø K M S
Size (K dia.) Mounting Bolts (supplied)
(2.6) (3.36) (0.18) (2.7) (0.57) (0.32) (1.42) (1.28) (0.344/0.364) (1.89)
(3.38) (0.14) (3.5) (0.53) (0.42) (0.98) (0.82) (0.541/0.561) (1.54)
(4.0) (0.14) (4.2) (0.53) (0.52) (1.18) (0.85) (0.699/0.718) (1.89)
(5.0) (0.08) (5.1) (0.43) (0.59) (1.38) (0.85) (0.856/0.875) (2.28)
(5.6) (0.18) (5.7) (0) (0.71) (1.66) (0.85) (0.856/0.875) (2.68)
(7.2) (0.18) (7.3) (0) (0.79) (1.89) (0.85) (1.289/1.309) (3.27)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 87
13
EATON Valvistor Cartridge Valve V-VLPO-MC011-E April 2009
High Performance
Extended Configuration Extended Configurations
Pilot Valve Non-OBE Valve OBE Valve
Model Code & Part Number KFTG4V-3-2B13N-Z-M-U-H7-10, 506834 KBFTG4V-3-2B13N-Z-M1-PE7-H7-11, 5996165-001
KBFTG4V-3-2B13N-Z-M2-PE7-H7-11, 5996350-001
Valvistor® Line Extension
Proportional Slip-in Cartridge Valve, Flow Control
K(B)TG4V-3 Pilot Stage K(B)FTG4V-3 Pilot Stage
Eaton’s Vickers
®
line is now extended with the addition of K(B)
TG4V-3 and K(B)FTG4V-3 pilot stage proportional valves. The
new features and benefits of the higher performance and on-
board electronics (OBE) open up new applications and mar-
kets. The valves piloted with K(B)FTG4V-3 offer performance
that is close to conventional feedback valves. As its name
implies, the Valvistor design has a main poppet valve that
amplifies a low flow rate through the pilot circuit, similar to a
transistor. This innovative design achieves servo-type control
of the main poppet, without using an electrical main poppet
position feedback transducer on the Slip-in cartridge valve.
Features and benefits of the new valves include:
main-stage performance is achieved without using a main-
stage LVDT.
effective design results in design flexibility.
achieved since the flow is not wasted to the tank.
Applications include injection and blow molding, rubber mold-
ing, press, die-casting, offshore, civil engineering, marine, pri-
mary metal, and mobile applications. The tables below show
existing Valvistor configurations and the new extended con-
figurations with K(B) TG4V-3 and K(B)FTG4V-3 as pilot valves.
Step Response (ms) Open Close Open Close
Delta P Tested 10 bar 10bar 10bar 10bar
NG16 51 33 35 25
NG25 88 50 50 30
NG32 135 71 70 45
NG40 249 108 130 65
NG50 290 167 170 100
NG63 352 250 200 150
Hysteresis 1% 1% 1% 1%
Notes Valvistor full flow reached at around 70% command input of K(B)F with 13N spool. For M2 version, the command input range
is 4-12ma, valve is fully open at 4ma, and fully closed at 12ma.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201288
EATON Valvistor Cartridge Valve V-VLPO-MC011-E April 2009
14
Standard Performance
Extended Configuration Extended Configurations
Pilot Valve Non-OBE Valve OBE Valve
Model Code & Part Number KTG4V-3-2B08N-M-U-H7-60-EN427, 02-398752 KBTG4V-3-2B08N-M1-PE7-H7-10-EN427, 02-398750
Other configurations available. KBTG4V-3-2B08N-M2-PE7-H7-10-EN427, 02-398751
Contact Eaton
Economical Solution
Extended Configuration Extended Configurations
Pilot Valve Non-OBE Valve OBE Valve
Model Code & Part Number KTG4V-3S-2B08N-M-U-H5-60-EN427, 02-154581 KBTG4V-3S-2B08N-M1-PE7-H5-10-EN427, 02-397168
Other configurations available. KBTG4V-3S-2B08N-M2-PE7-H5-10-EN427, 02-398753
Contact Eaton
Step Response (ms) Open Close Open Close
Delta P Tested 10 bar 10 bar 10 bar 10 bar
NG16 50 40 38 24
NG25 85 60 66 36
NG32 130 85 101 51
NG40 240 130 186 78
NG50 280 200 217 120
NG63 340 300 264 180
Hysteresis <5 <5 <5 <5
Notes:
Released Part Numbers
Model Code Assembly Number
Model Code Assembly Number
Step Response (ms) Open Close Open Close
Delta P Tested 10 bar 10 bar 10 bar 10 bar
NG16 50 40 38 24
NG25 85 60 66 36
NG32 130 85 101 51
NG40 240 130 186 78
NG50 280 200 217 120
NG63 340 300 264 180
Hysteresis <8% <8% <8% <8%
Notes:
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 89
Basic Characteristics
Valves
Nominal sizes: ISO 7368 DIN 24342
06 NG16
08 NG25
09 NG32
10 NG40
Max. operating pressure .............................. 315 bar (4500 psi)
Flow ratings ................................up to 900 L/min (238 USgpm)
Amplifier
Eaton-Vickers model EEA-PAM-571-A, to be ordered sepa-
rately. Power input 20-34V DC, 24V DC nominal.
General Description
Proportional throttle (restrictor) valves for use where one or
more of the following requirements exist.
• Remotecontrolofmachineactuatorspeed,linearorrotary.
• Speedcontrolinaccordancewithmachineoperatingcycles
or programs.
• Meter-in,meter-outorbleed-offapplicationofthethrottle
valve itself.
• Pressurecompensatedowcontrolwiththeaidofapres-
sure hydrostat module, in any of the same three application
modes.
• Smoothcontrolofmachineaccelerationand/ordecelera-
tion.
• Forindustrialandmobileapplications.
Note: Correct performance of valves can only be obtained using Eaton-Vickers amplifier
EEA-PAM-571-A.
Features and Benefits
• New09(NG32)size.
• Valvessuitableforunidirectionalandbidirectionalcontrolof
flow.
• 4valvesizesofferchoiceofowcapacities
06 (NG16): 190 L/min (50 USgpm)
08 (NG25): 450 L/min (119 USgpm)
09 (NG32): 700 L/min (185 USgpm)
10 (NG40): 900 L/min (238 USgpm)
at 10 bar (145 psi) Δp.
• Designedforzeroleakagewhenclosed.
• Commonamplierforanyvalvesizeminimizesinventory.
• 24VDCnominalsupplytoampliertosuitstate-of-art
control systems.
• Choiceofcommandsignals.
• Accelerationanddecelerationrequirementscanbe
adjusted on-site by “ramp” potentiometer.
• Facilityforon-siteadjustmentof“deadband”compensa-
tion and “gain”.
• Setting-upandfaultdiagnosiseasedbypaneldisplayand
signal monitoring points.
Functional Symbol
CVU-**-EFP1
Electrohydraulic Proportional Throttles
CVU-**-EFP1-3* Series
Amplifi er
X
Y
AB
Command
signal
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201290
Model Codes Electrohydraulic
Proportional Throttles
1 Special seals for phos-
phate ester fluids
Omit for standard seals; see
‘‘Hydraulic fluids’’ section.
2 Model
CVU - Cartridge valve unit
3 Nominal size to ISO
(DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
4 Type
EFP1 - Electronic feedback,
proportional 2–stage
5 Threads on fitted plugs
B - G (BSPF) threads to ISO
228/1
6 Seals
2 - Seals to ISO 3601
7 Mounting Bolts
9 - Metric mounting bolts
supplied
8 Rated flow at 10 bar
(145 psi) Δ p
19 - 190 L/min (50 USgpm)
size 06 (NG16) only
45 - 450 L/min (119 USgpm)
size 08 (NG25) only
70 - 700 L/min (185 USgpm)
size 09 (NG32) only
90 - 900 L/min (238 USgpm)
size 10 (NG40) only
9 Design number, 3* se-
ries
Subject to change. Installa-
tion dimensions unaltered
for design numbers 31 to 39
inclusive.
Wiring Connections
WARNING
All power must be switched off before connecting
or disconnecting any plugs.
WARNING
Electromagnetic Compatibility (EMC)
It is necessary to ensure that the unit is wired up
in accordance with the connection arrangements
shown. For effective protection the user’s electrical cabinet,
the valve subplate or manifold and the cable screens should
be connected to efficient ground points. In all cases both
valve and cable should be kept as far away as possible from
any sources of electromagnetic radiation such as cables car-
rying heavy current, relays and certain kinds of portable radio
transmitters, etc. Difficult environments could mean that
extra screening may be necessary to avoid the interference.
(F3-) CVU - ** - EFP1 - B 2 9 - ** - 3*
1 2 43 86 75 9
z22
b14
b16
z28
z26
+15
EEA-PAM-571-A-32
CVU**EFP1
Customer’s protective ground connection.
z22
b14
b16
z28
z26
+15
EEA-PAM-571-A-32
CVU**EFP1
Customer’s protective ground connection.
z22
b14
b16
z28
z26
+15
EEA-PAM-571-A-32
CVU**EFP1
Customer’s protective ground connection.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 91
Flow/Stroke Characteristics
At Δp = 10 bar (145 psi)
For a given input signal value the characteristics of the valve
approximate to the theoretical square-law relationship for
sharp-edged orifices:
Where Δp
x
= Pressure drop for required flow rate Q
x
Δp
r
= Pressure drop at rated current
Q
x
= Flow rate for which Δp
x
is to be calculated
Q
r
= Flow rate at rated current
Operating and Performance Data
Electrohydraulic Proportional Throttles
Performance data is typical with uid at 36 cSt (168 SUS) and 500C (1220F)
Pressure ratings:
Ports A, B, X 315 bar (4500 psi) max.
Port Y ≤2 bar (29 psi)
Cracking pressure: (see diagram on next page for valve area ratios)
For ow A to B 2,5 bar (36 psi)
For ow B to A 6,5 bar (94 psi)
Flow ratings A to B/B to A See Model Code 8 on previous page
Spool overlap, deadband typical
CVU-16 30% of full stroke
CVU-25 23% of full stroke
CVU-32 18.5% of full stroke
CVU-40 20% of full stroke
Peak solenoid current at 500 C (1220F) ambient
Nominal 2.2A (13.6W)
Max. 2.9A (18W)
Solenoid coil resistance at 200C (680 F) 2.8Ω
Relative duty factor Continuous rating (ED = 100%)
Electrical protection with plugs tted IEC 144 class IP 65
Dynamic performance (using amplier EEA-PAM-571-A-32) CVU-16 CVU-25 CVU-32 CVU-40
• Step input response: valve stroke between zero overlap and fully open
100 bar (1450 psi) at ports A, B and X
Opening time 40 ms 60 ms 80 ms 125 ms
Closing time 50 ms 60 ms 80 ms 125 ms |
• Frequency response See next page
• Hysteresis <1% <1% <1% <1%
• Repeatability ±0.5% ±0.5% ±0.5% ±0.5%
Mass 3,3 kg 4,1 kg 6,5 kg 8,0 kg
(7.3 lb) (9.0 lb) (14.3 lb) (17.7 lb)
0102030405060708090 100
%stroke fromclosed position
Flow rate
0
50
100
150
200
250
USgpm
900
L/min
800
700
600
500
400
300
200
100
Δp
x
= Δpr
.
(
)
2
Q
x
Q
r
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201292
Frequency Response
Typical at PA = PB = 100 bar (1450 psi) and at zero flow.
Based on operating valve about the 50% stroke position with
a sinusoidal input signal of ±10%
CVU-16-EFP1---3*
CVU-25-EFP1---3*
CVU-32-EFP1---3*
CVU-40-EFP1---3*
Valve Area Ratios
Hydraulic Fluids
All cartridge valves can be used with antiwear hydraulic oils,
and certain low viscosity fluids. Add prefix “F3” to model
designations when phosphate ester (not alkyl-based) or chlo-
rinated hydrocarbons are to be used. The extreme viscosity
range is from 500 to 13 cSt (2270 to 70 SUS) but the recom-
mended running range is from 54 to 13 cSt (245 to 70 SUS).
For further information about fluids, see “Technical informa-
tion” leaflet B-920.
Temperature Limits
Ambient min ............................................................. 20ºC (-4ºF)
Ambient max .................................................... +70ºC (+158ºF)
Fluid temperatures
Petroleum Oil Water Containing
Min. –20
0
C (–4
0
F) +10
0
C (+50
0
F)
Max. +80
0
C (+176
0
F) +54
0
C (+129
0
F)
Filtration Requirements
See page 19.
Drive Amplifier
EEA-PAM-571-A. See GB-C-2464.
Other Supporting Products
See electronic accessories
GB-C-2460.
Electrohydraulic Proportional Throttles
CVU-**-EFP1-3* Series
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-- 1
-- 2
-- 3
-- 4
-- 5
-- 6
-- 7
-- 8
-- 9
1
150
120
90
60
30
0
Amplitude ratio(dB)
Frequency response (Hz)
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-- 8
-- 7
-- 6
-- 5
-- 4
-- 3
-- 2
-- 1
0
1
Frequency response (Hz)
Amplitude ratio(dB)
150
120
90
60
30
0
Phase shift(degrees)
Amplitude ratio(dB)
Frequency response (Hz)
Amplitude ratio(dB)
Frequency response (Hz)
Phase shift(degrees)
Phaseshift (degrees)
Phase shift(degrees)
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150
120
90
60
30
0
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-- 6
-- 5
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-- 3
-- 2
-- 1
0
1
150
120
90
60
30
0
A
A
: 1,0
Area ratio
A
A
: A
AP
= 1 : 1,4
A
B
: 0,4
A
AP
: 1,4
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-- 3
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1
150
120
90
60
30
0
Amplitude ra ti o(dB)
Frequency response (Hz)
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1
Frequency response (Hz)
Amplitude ra ti o(dB)
150
120
90
60
30
0
Phase shift(degrees)
Amplitude ra ti o(dB)
Frequency response (Hz)
Amplitude ra ti o(dB)
Frequency response (Hz)
Phase shift(degrees) Phaseshift (degrees)Phase shift(degrees)
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1
150
120
90
60
30
0
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-- 6
-- 5
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-- 3
-- 2
-- 1
0
1
150
120
90
60
30
0
A
A
: 1,0
Area ratio
A
A
: A
AP
= 1 : 1,4
A
B
: 0,4
A
AP
: 1,4
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-- 1
-- 2
-- 3
-- 4
-- 5
-- 6
-- 7
-- 8
-- 9
1
150
120
90
60
30
0
Amplitude ratio(dB)
Frequency response (Hz)
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-- 8
-- 7
-- 6
-- 5
-- 4
-- 3
-- 2
-- 1
0
1
Frequency response (Hz)
Amplitude ratio(dB)
150
120
90
60
30
0
Phase shift(degrees)
Amplitude ratio(dB)
Frequency response (Hz)
Amplitude ratio(dB)
Frequency response (Hz)
Phase shift(degrees)
Phaseshift (degrees)Phase shift(degrees)
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-- 1
-- 2
-- 3
-- 4
-- 5
-- 6
-- 7
-- 8
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1
150
120
90
60
30
0
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-- 7
-- 6
-- 5
-- 4
-- 3
-- 2
-- 1
0
1
150
120
90
60
30
0
A
A
: 1,0
Area ratio
A
A
: A
AP
= 1 : 1,4
A
B
: 0,4
A
AP
: 1,4
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0
-- 1
-- 2
-- 3
-- 4
-- 5
-- 6
-- 7
-- 8
-- 9
1
150
120
90
60
30
0
Amplitude ratio(dB)
Frequency response (Hz)
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-- 9
-- 8
-- 7
-- 6
-- 5
-- 4
-- 3
-- 2
-- 1
0
1
Frequency response (Hz)
Amplitude ratio(dB)
150
120
90
60
30
0
Phase shift(degrees)
Amplitude ratio(dB)
Frequency response (Hz)
Amplitude ratio(dB)
Frequency response (Hz)
Phase shift(degrees) Phaseshift (degrees)Phase shift(degrees)
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-- 1
-- 2
-- 3
-- 4
-- 5
-- 6
-- 7
-- 8
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1
150
120
90
60
30
0
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-- 8
-- 7
-- 6
-- 5
-- 4
-- 3
-- 2
-- 1
0
1
150
120
90
60
30
0
A
A
: 1,0
Area ratio
A
A
: A
AP
= 1 : 1,4
A
B
: 0,4
A
AP
: 1,4
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-- 1
-- 2
-- 3
-- 4
-- 5
-- 6
-- 7
-- 8
-- 9
1
150
120
90
60
30
0
Amplitude ratio(dB)
Frequency response (Hz)
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-- 8
-- 7
-- 6
-- 5
-- 4
-- 3
-- 2
-- 1
0
1
Frequency response (Hz)
Amplitude ratio(dB)
150
120
90
60
30
0
Phase shift(degrees)
Amplitude ratio(dB)
Frequency response (Hz)
Amplitude ratio(dB)
Frequency response (Hz)
Phase shift(degrees) Phaseshift (degrees)
Phase shift(degrees)
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-- 1
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1
150
120
90
60
30
0
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-- 7
-- 6
-- 5
-- 4
-- 3
-- 2
-- 1
0
1
150
120
90
60
30
0
A
A
: 1,0
Area ratio
A
A
: A
AP
= 1 : 1,4
A
B
: 0,4
A
AP
: 1,4
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 93
Connections to Port X
For unidirectional control of flow (ie A to B or B to A) port X
must be connected to upstream port pressure. For bidirec-
tional control of flow (ie flow A to B and B to A at different
times during an operating cycle) port X must be connected to
both A and B via a shuttle valve (see diagram).
Installation dimensions below mounting surface, including
location of ports “X” and “Y” and size/length of bolts “H”,
conform to requirements of ISO 7368---A (see page 123).
■ Connect to drain: pressure must not exceed 2 bar (29 psi).
• See“ConnectionstoPortX”,thispage.
Electrohydraulic Proportional Throttles
Dimension CVU-16 CVU-25 CVU-32 CVU-40
A 135,5 (5.33) 133,5 (5.25) 138,5 (5.45) 138,5 (5.45)
B 74,0 (2.91) 77,0 (3.03) 90,5 (3.56) 109,5 (4.31)
C 109,5 (4.31) 105,5 (4.15) 113,5 (4.47) 105,5 (4.15)
D 32,5 (1.28) 42,5 (1.67) 51,0 (2.01) 63,0 (2.48)
E 70,0 (2.76) 65,5 (2.58) 69,0 (2.72) 63,0 (2.48)
F 66,6 (2.62) 85,0 (3.35) 102,0 (4.02) 126,0 (4.96)
G 57,0 (2.24) 55,0 (2.16) 60,0 (2.36) 60,0 (2.36)
H bolts 4 x M8 x 35 4 x M12 x 45 4 x M16 x 55 4 x M20 x 70
Bolt torque 35 Nm 110 Nm 285 Nm 500 Nm
Alternative UNC bolts (not supplied with CVU-**-EFP1)
Size
5
/
16
”-18 x 11/2”
1
/
2
”-13 x 11/2”
5
/
8
”-11 x 2”
3
/
4
”-10 x 2
3
/
4
”
Bolt kit BKDNG16700 BKPNG25704 BKNG32713 BKCG825613
Bolt torque 26 lbf ft 81 lbf ft 210 lbf ft 370 lbf ft
Location of
port“Y”
Pilot-stage of
CVU
Mainstage
of CVU
External
shuttle
valve
X
Y
A
B
2,5(0.10) [plug
on sizes 25, 32
and40 only]
Locatingpin
position
Location of
port “X”
Mountingsurface
H, bolts
supplied
1,6(0.06)
over
nameplate
B: clearance forremoval of
LVDT housingand/orremoval of
complete valvefrommanifold.
G
A
F
C
43,0
(1.7)
7,0(0.28)
forplugremoval
Cablegland Pg 7:
Ø6,0 (0.24dia)
Plug
(partno.
458939) fitted
10,0(0.4)
forplug
removal
Cablegland
Pg 11:Ø10,0
(0.4 dia)
Plug
(part no.
977896)
fitted
Port B
E D
Port A
Dimensions mm (inch)
Location of
port“Y”
Pilot-stage of
CVU
Mainstage
of CVU
External
shuttle
valve
X
Y
A
B
2,5(0.10) [plug
on sizes 25, 32
and40 only]
Locatingpin
position
Location of
port “X”
Mountingsurface
H, bolts
supplied
1,6(0.06)
over
nameplate
B: clearance forremoval of
LVDT housingand/orremoval of
complete valvefrommanifold.
G
A
F
C
43,0
(1.7)
7,0(0.28)
forplugremoval
Cablegland Pg 7:
Ø6,0 (0.24dia)
Plug
(partno.
458939) fitted
10,0(0.4)
forplug
removal
Cablegland
Pg 11:Ø10,0
(0.4 dia)
Plug
(part no.
977896)
fitted
Port B
E D
Port A
Dimensions mm (inch)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201294
Basic Characteristics
Valves
Nominal sizes: ISO 7368 DIN 24342
06 NG16
08 NG25
09 NG32
10 NG40
11 NG50
12 NG63
Max. operating pressure ............................... 315 bar (4500 psi)
Nominal flow ratings, Δp = 10 bar (145 psi):
CVU-16 .................................................210 L/min ( 55 USgpm)
CVU-25 ................................................400 L/min (105 USgpm)
CVU-32 ................................................600 L/min (158 USgpm)
CVU-40 ................................................900 L/min (236 USgpm)
CVU-50 ..............................................1600 L/min (420 USgpm)
CVU-63 ..............................................2500 L/min (660 USgpm)
General Description
These cartridge valves are integral assemblies of cover and
insert with a main spool that is fully seated in its closed posi-
tion. A coaxially mounted switch on the top cover provides a
signal when the main spool is in position to close the main-
stream flow.
On all models a spring holds the main spool in the closed
position, requiring a small pressure to create flow through the
valve. Pilot pressure from either a remote source (SWD mod-
els), or from a valve mounted directly onto the cover (SWD3
models) can be used to hold the spool fully closed. The “Dy-
namic” models, ZSWD3, with pilot operation of both opening
and closing, cater for applications requiring fast response.
Flow can be in either direction (i.e. A to B, and B to A). The
SWD(3) range is specifically designed for application in
circuits and systems where electrical signalling of a known
(closed) condition of the valve is required. The design of the
main spool ensures that both switch indications, i.e. “valve
closed” and “valve open”, occur when the valve is closed to
mainstream flow.
Features and Benefits
• Accurateandrepeatableswitchingpoints.
• Integratedandpre-setswitchassembly,withpressure-
tight core tube, requires no setting adjustments to be
made at installation.
• Bidirectionalowcapability,simpliesmanifoldblock
design.
• “Dynamic”versionensurespositiveopeningandclosing.
• “Dynamic”versionoffersfastresponsetimes.
• Absenceofspoolsealsimprovesreliability.
• Robustlyprotectedswitchassembly.
• Normallyopenandnormallyclosedswitchcontacts.
• Overloadandpolarityprotected.
• ConformstoISO7368.
This product has been designed and tested to meet specific
standards outlined in the European Electromagnetic Compat-
ibility Directive (EMC). For instructions on installa-
tion requirements to achieve effective protection
levels, see this leaflet and the Installation Wiring
Practices for Eaton-Vickers Electronic Products
leaflet 2468. Wiring practices relevant to this Directive are
indicated by Electromagnetic Compatibility (EMC).
Directional Valves with Electrical
Indication
CVU-**-SWD, CVU-**-SWD3, CVU-**-ZSWD3, 1* Series
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 95
CVU-32-SWD
CVU-32-ZSWD3
Standardfactory-fittedorifice.
CVU-**-SWD3
CVU-**-ZSWD3
X
B
A
AP
PA BT
XZ
1
Z
2
Y
B
A
AP
P
BT
A
XZ
1
Z
2
Y
B
A
CVU-**-SWD
Tapped portfor installation of additionalorifices.
Wiring Connections
1
2
3
4
CVU-32-SWD
CVU-32-ZSWD3
Standardfactory-fittedorifice.
CVU-**-SWD3
CVU-**-ZSWD3
X
B
A
AP
PA BT
XZ
1
Z
2
Y
B
A
AP
P
BT
A
XZ
1
Z
2
Y
B
A
CVU-**-SWD
Tapped portfor installation of additionalorifices.
Wiring Connections
1
2
3
4
CVU-32-SWD
CVU-32-ZSWD3
Standardfactory-fittedorifice.
CVU-**-SWD3
CVU-**-ZSWD3
X
B
A
AP
PA BT
XZ
1
Z
2
Y
B
A
AP
P
BT
A
XZ
1
Z
2
Y
B
A
CVU-**-SWD
Tapped portfor installation of additionalorifices.
Wiring Connections
1
2
3
4
WARNING: Electromagnetic Compatibility (EMC)
It is necessary to ensure that the unit is wired up
in accordance with the connection arrangements
shown in this leaflet. For effective protection the
user’s electrical cabinet, the valve subplate or manifold and
the cable screens should be connected to efficient ground
points. In all cases both valve and cable should be kept as far
away as possible from any sources of electromagnetic radia-
tion such as cables carrying heavy current, relays and certain
kinds of portable radio transmitters, etc. Difficult environ-
ments could mean that extra screening may be necessary to
avoid the interference.
CAUTION
All power must be switched
off before connecting or
disconnecting any plugs.
Customer’s protective ground connection.
Typical Sectional Arrangements
Tapped port for installation of additional orifices.
Functional Symbols
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201296
Model Codes
1 Special Seals for phos-
phate ester fluids
Omit if not required
2 Model
CVU - Cartridge valve unit
3 Nominal size to ISO
7368 (DIN 24342)
7368 (DIN 24342)
16 - 06 (NG16)
25 - 08 (NG25)
32 - 09 (NG32)
40 - 10 (NG40)
50 - 11 (NG50)
63 - 12 (NG63)
4 Dynamic model
Sizes 16 to 40 only
Z - Pilot operation of main
spool opening and closing,
via size 3 pilot valve inter-
face. Note: ‘‘3’’ must also
be specified at position 6 .
Omit if not required
5 Type
SWD - Spool position sensor,
series D
6 Function
Sizes 16, 25, 32 and 40 only:
Blank - Spring return of main
spool to closed position plus
facility to hold spool closed
by hydraulic pressure from a
remote source.
Sizes 16 to 63 - SWD3
Sizes 16 to 40 - ZSWD3
3 - As above but with
machined mounting pad,
with M5 mounting bolt tap-
pings, for size 3 pilot valve
to provide for local hydraulic
operation (e.g. solenoid oper-
ated directional valve, shuttle
valve, pilot operated check
valve, etc. according to circuit
requirements)
Note: The pilot valve and
its mounting bolts must be
separately specified and
ordered.
7 Threads on fitted plugs
B - G (BSPF) thread to ISO
228/1
8 Seals
2 - Seals to ISO 3601
9 Mounting bolts
9 - Metric bolts supplied with
valve
10 Main spool opening/
cracking nominal pressure
(Ports A and B)
L - 0,5 bar (7 psi)
M - 2,5 bar (36 psi)
H - 5,0 bar (72 psi)
11 Design number, 1*
series
Subject to change. Installa-
tion dimensions unaltered
for design numbers 10 to 19
inclusive.
(F3-) CVU - ** - (Z) SWD (3) - B 2 9 - * - 1*
1 2 53 4 6 8 9 107 11
Typical Model Selection
For applications requiring a valve for a flow rate of 400 L/
min (105 USgpm) with remote pilot, main spool cracking
pressure of 2,5 bar (36.3 psi) and metric bolts, select: CVU-
25-SWDB29-M-10 For applications requiring electrical indi-
cation of spool position for a flow rate of 1600 L/min (420
USgpm) with integral pilot operation, main spool cracking
pressure of 5,0 bar (72.5 psi) and UNC bolts, select: CVU-50-
SWD3-B29-H-10 bolt kit BKDNG50708 For applications requir-
ing electrical indication of spool position with hydraulic pilot
operation for opening and closing, a flow rate of 600 L/min
(158 USgpm), main spool cracking pressure of 0,5 bar (7.3
psi) and metric bolts, select: CVU-32-ZSWD3-B29-L-10
Operating Data
Maximum Pressures All ports: 315 bar (4500 psi) Actual
allowable pressure for some or all ports may be limited by
the pressure rating of the selected pilot valve to be used on
SWD3 models.
Flow Rates
Flow direction A to B, or B to A, with main spool piloted open
and at 10 bar (145 psi) pressure drop between A and B.
CVU-16 ................................................210 L/min ( 55 USgpm)
CVU-25 ...............................................400 L/min (105 USgpm)
CVU-32 ...............................................600 L/min (158 USgpm)
CVU-40 ...............................................900 L/min (236 USgpm)
CVU-50 ............................................1600 L/min (420 USgpm)|
CVU-63 .............................................2500 L/min (660 USgpm)
See pressure drop graphs for further data.
Area Ratios
B
A
A
A
A
B
A
P
A
A
: A
B
: A
P
1 : 1 : 2
CVU-**-SWDCVU-**-SWD3
B
A
A
A
A
B
A
P
A
A
: A
B
: A
P
1 : 1 : 2
CVU-**-SWDCVU-**-SWD3
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 97
Characteristics of Electrical Switch
Input:
Supply voltage +10 to +35V DC inclusive of a max.
4V peak-to-peak ripple
Current, switch open 5 mA
Current, switch closed 255
mA
Output:
Max. continuous current 250 mA
Voltage 1V below input at max.
load Min. load impedance
96 ohms Max. switching frequency
10 Hz
Plug connections:
Pin 1 (output 1) Normally open
Pin 2 Supply posi-
tive Pin 3
0V Pin 4 (output 2)
Normally closed
Protection: Overload and short-circuit protected;
self re-setting IEC 947 class IP65 with
connector correctly fit-
ted Mechanical:
Switching hysteresis
<0,15 mm (0.006 in) Repeatability
<0,02 mm (0.001 in) Temperature drift of switching point
≤3 μm/ºC (0.0002 in/ºF) Connector
Pg 7 fitted
Switching Positions Relative to Main Spool Position
Figure 41 Figure 42 Figure 43
Figure 41: Valve fully closed by hydraulic pilot pressure and/or
spring. Spool is fully seated in the sleeve.
Figure 42: When the spool is closing the “valve closed”
switch indication occurs 0,5 mm (0.020) before the spool
reaches the valve seat.
When the spool moves off its seated position the “valve
open” indication occurs when the spool has travelled approx.
0,6 mm (0.024).
At both of these positions the main flow path A–B is closed.
There is a small amount of spool travel between these
switching points and the decompression notch opening/clos-
ing.
The clearance between the spool end and the “A” port
diameter is closely controlled to minimize leakage flow at the
“valve open” switch point, see “Quiescent Flow” on next
page.
Figure 43: The fully open spool allows full flow path A to B, or
B to A.
Metal-to-metal
seat
Decompression
notch
“Valve open”
“Valve
closed”
Spool
closing
Spool
opening
0,5mm
(0.020”)
0,6mm
(0.024”)
Port B
Port A
A
A
A
B
A
BP
A
A
P
AP
BP
B
A
1
23
4
Metal-to-metal
seat
Decompression
notch
“Valve open”
“Valve
closed”
Spool
closing
Spool
opening
0,5mm
(0.020”)
0,6mm
(0.024”)
Port B
Port A
A
A
A
B
A
BP
A
A
P
AP
BP
B
A
1
23
4
Metal-to-metal
seat
Decompression
notch
“Valve open”
“Valve
closed”
Spool
closing
Spool
opening
0,5mm
(0.020”)
0,6mm
(0.024”)
Port B
Port A
A
A
A
B
A
BP
A
A
P
AP
BP
B
A
1
23
4
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 201298
Performance Data Directional Valves with
Electrical Indication
Typical with oil at 21 cSt (102 SUS) and at 50 C 122 F) unless
otherwise indicated. For pressure drops at other viscosities,
see page 119.
Quiescent Flow
These valves are fully seated in the closed position. Maximum
flow A to B, or B to A (at the “valve open” switch indication
position, see Figure 42 on previous page), at 100 bar (1450
psi) pressure differential A to B (or from B to A):
Valve Size Max. Leakage Flow Rate: L/min. (USgpm)
16 2,0 (0.53)
25 3,0 (0.8)
32 4,0 (1.06)
40 6,0 (1.6)
50 12,0 (3.2)
63 18,0 (4.8)
Displacement volumes, ZSWD3 models
Total trapped volumes (up to size 3 mounting face) and dis-
placed volumes for spool opening and closing stroke.
Volumes in cm
3
(in
3
)
At port A: At port B:
Nominal Total Vol. Stroke Total Vol. Stroke
Size Spool Closed Vol. Spool Open Vol.
16 6,44 (0.39) 2,05 (0.13) 2,45 (0.15) 0,43 (0.03)
25 13,59 (0.83) 4,73 (0.29) 4,40 (0.27) 0,95 (0.06)
32 27,49 (1.68) 11,79 (0.72) 6,69 (0.41) 2,29 (0.14)
40 44,34 (2.70) 21,38 (1.30) 9,92 (0.61) 4,23 (0.26)
Hydraulic Fluids
These valves are suitable for use with hydraulic oils, water-in-
oil emulsions and water glycols. The extreme operating range
is from 500 to 13 cSt (2270 to 70 SUS) but the recommended
running range is 54 to 13 cSt (245 to 70 SUS).
Temperature Limits
Ambient:
Minimum – 200 C (– 40 F)
Maximum +800 C (+1760 F)
Fluid temperature
Petroleum Oil Water-Containing
Min. –10 0C +10 0C
(+140 F) (+500 F)
Max.* +80 0C +54 0C
(+1760 F) (+1290 F)
Filtration Requirements
See page 19.
Mounting Attitude
Unrestricted.
* To obtain optimum service life from both fluid and hydraulic system, 650 C (1500 F) is the
recommended maximum fluid temperature, except for water-containing fluids.
For synthetic fluids consult fluid manufacturer or Eaton-Vick-
ers where limits are outside those for petroleum oil.
A
B
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 99
Pressure Drops
Flow in either direction: A to B, or B to A
CVU-32-(Z)SWD(3)
)3(DWS)Z(-52-UVC)3(DWS)Z(-61-UVC
CVU-40-(Z)SWD(3)
CVU-50-SWD3
CVU-63-SWD3
bar
10
8
6
4
2
050100 150 200250
L/min
02550
USgpm
psi
0
50
100
150
Flow rate
bar
10
8
6
4
2
0
100
200300 400L/min
0255075100
USgpm
psi
0
50
100
150
Flow rate
psi bar
10
8
6
4
2
0
0
50
100
150
100 200300 400 500 600 L/min
050100 150 USgpm
Flow rate
bar
10
6
2
psi
0
50
100
150
8
4
0200 400600 800L/min
050100 150200 USgpm250
1000
Flow rate
psi bar
10
8
6
4
2
0
0
50
100
150
400 800 1200 1600L/min
0 100 200400 USgpm300
psi
4
2
0
0
50
100
150
bar
10
8
6
500 1000 1500 2500L/min
0100 200 400 USgpm300
2000
500600
700
etarwolFetarwolF
Pressure drop
Pressure drop
Pressure drop
Pressure drop
Pressure drop
Pressure drop
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012100
Standard, Factory Fitted Orifices
Standard orifices fitted in model types SWD and SWD3 are
sized to optimize valve dynamics with low shock characteris-
tics over a wide range of system parameters. In model types
CVU-**-SWD3 provision for orifice Z1 caters for additional
tuning. If it is necessary to change the size of orifice AP then
consult your Eaton-Vickers representative for information on
correct dismantling and re-assembly procedures.
CVU-**-SWD Models
Orifice AP, Port X in
Side of Cover
Nominal Size Diameter, mm (inches) Thread
16 1,0 (0.039) M6
25 1,2 (0.047) M6
32 1,4 (0.055) M6
40 1,4 (0.055) M6
CVU-**-SWD3 Models
Orifice AP: Orifice Z1:
Nominal Diameter, Diameter,
Size mm (inches) Thread mm (inches) Thread
06 (NG16) 1,4 (0.055) M5 1,0 (0.039) M5
08 (NG 25) 1,6 (0.063) M6 1,2 (0.047) M6
09 (NG 32) 2,0 (0.079) M6 1,4 (0.055) M6
10 (NG 40) 2,0 (0.079) M6 1,4 (0.055) M6
11 (NG 50) 2,2 (0.087) M6 1,6 (0.063) M6
12 (NG 63) 2,5 (0.098) M6 1,8 (0.071) M10
CVU-**-ZSWD3 Models
Nominal Orifice locations AP, X, Z
2
Size Diameter, mm (inches) Thread
06 (NG16) No standard M6
08 (NG 25) orices tted
09 (NG 32)
10 (NG 40)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 101
Directional Valves with Electrical
Indication
Dimension CVU-16-SWD CVU-25-SWD CVU-32-SWD CVU-40-SWD
A 65,0 (2.6) 85,0 (3.35) 102,0 (4.02) 125,0 (4.92)
B 69,0 (2.72) 90,0 (3.54) 106,5 (4.2) 130,0 (5.12)
C 26,0 (1.02) 25,0 (0.98) 47,0 (1.89) 49,0 (1.93)
D 40,0 (1.58) 60,0 (2.36) 65,0 (2.56) 70,0 (2.76)
E 118,5 (4.67) 141,25 (5.56) 143,5 (5.65) 148,5 (5.85)
F 173,9 (6.85) 210,1 (8.27) 228,2 (8.98) 253,0 (9.96)
G bolts▲ 4 x M8 x 40 4 x M12 x 45 4 x M16 x 75 4 x M20 x 80
Bolt torque 35 (26) 110 (81 ) 285 (210) 500 (370)
Nm ( lbf ft)
▲ For details of equivalent inch/UNC bolts see page 104.
•
Installation dimensions below mounting surface, including location of port “X” and size/length of bolts “G”,conform to requirements of ISO 7368---A (see page 123).
A
Port X
Orientationpin
Orientationpin
Ftoremove valve
View showing orientationofswitch
and plug on CVU-16-SWD model
View showing orientationofswitch and
plug on CVU-25/32/40-SWDmodels
Port Y
Port X
44,0(1.73) 8,0(0.3)forplugremoval
Plug (partno. 458939) fitted.
Cable entry6,0 (0.24) dia.
max. Forconnections see
OperatingDatatable
Mounting surface
Port B
Gbolts supplied
Orientationofplugmay be
changed by 180
0
by removing
switch housing bolts before
rotating housing to new position.
Replace bolts and torque to 7--9
Nm (5.2-- 6.6lbf ft)
A
2,0(0.08)
max.
2,0
(0.08)
max.
2,0(0.08) max.
B
max.
B
max.
CVU-**-SWD-B29-*-1*Models
Sizes16to40
A
F
E
C
D
Port A
Nameplate
Dimensions mm (inch)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012102
Dimension CVU-16-(Z)SWD3 CVU-25-(Z)SWD3 CVU-32-(Z)SWD3 CVU-40-(Z)SWD3 CVU-50-SWD3
A 73,0 (2.87) 85,0 (3.35) 102,0 (4.02) 125,0 (4.92) 142,5 (5.61)
B 75,5 (2.97) 90,0 (3.54) 106,5 (4.2) 130,0 (5.12) 147,0 (5.79)
C 82,5 (3.25) 54,0 (2.13) 72,0 (2.83) 55,0 (2.16) 42,0 (1.65)
D 90,0 (3.54) 90,0 (3.54) 90,0 (3.54) 100,0 (3.94) 100,0 (3.94)
E 68,5 (6.63) 168,5 (6.63) 168,5 (6.63) 178,5 (7.03) 178,5 (7.03)
F 223,9 (8.81) 240,0 (9.45) 253,2 (9.97) 282,8 (11.13) 300,0 (11.81)
G bolts▲ 4 x M8 x 100 4 x M12 x 75 4 x M16 x 100 4 x M20 x 75 4 x M20 x 75
Bolt torque
Nm (lbf.ft) 35 (26) 110 (81 ) 285 (210 ) 50 (370) 580 (430)
H 75,5 (3.0) 75,5 (3.0) 75,5 (3.0) 80,0 (3.1) 80,0 (3.1)
J 70,5 (2.76) 90,0 (3.54) 106,5 (4.2) 130,0 (4.9) 145,0 (5.7)
▲ Size 03 pilot control valve to be ordered separately. Recommended model Eaton-Vickers DG4V-3.
■ For details of equivalent inch/UNC bolts see page 104.
•
Installation mounting surface including location of ports “X”, “Y”, “Z1” “Z2” and size/length of bolts “G”, common to requirements of ISO 7368 -- A (see page 123
for more information)
Mounting surface
CVU-**-SWD3-B29-*-1*models, sizes16to50
CVU-**-ZSWD3-B29-*-1*models,sizes 16 to 40
A
A
Port X
Port Y
Orientationpin
Orientationpin
Port Y
Port X
View showing orientationofswitch and plug
on CVU-16-(Z)SWD3models
View showing orientationofswitch and plug on
CVU-**-SWD3models sizes25to50 and
CVU-**-ZSWD3 models sizes25--40
44,0
(1.73)
8,0(0.3) for
plug remova l
Plug (part no.
458939) fitted.
Cableentry 6,0
(0.24) dia. max.
For connections
see Operating
Data table
Port B
Port A
G bolts
supplied
Lifting eyebolts,M10,
suppliedwith size 50 only
SWD3 models, sizes 25 to 50:
Locationofstandard orifice AP.
M6-6Hx 8,0(0.3) deep.
Torque plug to 10-12Nm(7.5-9lbf ft)
Locationfor optional
orificeX.
M6-6Hx 8,0(0.3) deep
Sizes25to50:
Locationfor optional orifice Z
2
.
M6-6Hx 8,0(0.3) deep:
Torque plug to 20-- 24 Nm (15--18lbf ft)
Interface to ISO4401size03(ANSI/B93.7M-D03)
4 holes tapped M5-6Hx12,0(0.47) deep
Orientationofplugmay be changed by 180
0
by
removing switch housingbolts before rotati ng housing
to new position. Replacebolts andtorque to 7--9 Nm
(5.2-- 6.6lbf ft)
B
max.
A
.
2,0(0.08)
max.
73,0(2.08)
2,0(0.08)
max.
Port Z
2
Port Z
1
Port Z
2
Port Z
1
B
P
A
T
4,0(0.16) max.
4,0(0.16)
max.
Size 16: Standard orifice
Z
1
locatedinportZ
1
.
M6-6Hx 8,0(0.3) deep
Size 16 only:
Locationfor optional
orificeZ
2
.
M6-6Hx 8,0(0.3) deep
Datum mounting bolt
positionofsize03
interface
40,5(1.6)
F
E
D
C
H
Ftoremove valve
Nameplate
Dimensions mm (inch)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 103
▲ Size 03 pilot control valve to be ordered separately. Recommended model Eaton-Vickers DG4V-3.
■ For details of equivalent inch/UNC bolts see next page.
•
Installation dimensions below mounting surface, including location of ports “X”, “Y”, “Z1 ”, “Z2 ” and size/length of bolts “G”, conform to requirements of ISO 7368---A
(see page 123).
CVU-63-SWD3-B29-*-1*Models
Standard orifice Z
1
,1,8 (0.07) dia
M10-6H x 12,0(0.47)deep
Orientationpin
Port Y
Port X
44,0(1.73)
8,0(0.3) forplugremoval
Plug (part no. 458939)fitted.
Cableentry 6,0(0.24) dia. max.
For connections seeOperating
Data table
Mounting surface
Port B
Port A
Boltssupplied: 4xM30x150.
Torque to 1200 Nm (885 lbf ft)
Locationfor optional orifice X.
M6-6Hx 8,0(0.3) deep
Locationfor optional orifice Z
2
.
M6-6Hx 8,0(0.3) deep
Plug.
Torque to 20-- 24 Nm (15--18lbf ft)
Interface to ISO 4401
size 03
(ANSI/B93.7M-D03)
4 holes tapped M5-6H
x 12,0(0.47) deep
Plug.
Torque to 10-- 12 Nm (7.5-- 9lbf ft)
Lifting eyebolts,M10,supplied
183,0(7.2)
)21.0(0,3)21.0(0,3
3,5(0.14)
3,5
(0.14)
B
P
A
T
128,0
(5.04)
21,5
(0.85)
Datummounting bolt positionofsize03interface
183,0
(7.2)
368,0
(14.49)
to remove
valve
96,0
(3.78)
135,0
(5.31)
213,5
(8.40)
Nameplate
Dimensions mm (inch)
368,0
(14.49)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012104
Mounting Bolts/Torques
Metric mounting bolts are supplied with these valves (see
installation drawings for details and torques). The following
table gives details of equivalent UNC bolts which must be to
Grade 12.9 (ISO 898) or stronger.
Mass
Valve complete with 4 mounting bolts; pilot valve not included
in SWD3 models.
Model Mass Kg (lb)
CVU-16-SWD 1,6 (3.4)
CVU-16-(Z)SWD3 3,3 (7.3)
CVU-25-SWD 3,5 (7.7)
CVU-25-(Z)SWD3 4,9 (10.8)
CVU-32-SWD 5,75 (12.3)
CVU-32 (Z)SWD3 7,25 (16.0)
CVU-40-SWD 9,6 (21.2)
CVU-40-(Z)SWD3 12,3 (27.0)
CVU-50-SWD3 15,7 (34.7)
CVU-63-SWD3 37,9 (83.4)
Spare Seal Kits
Seal kits for sizes 16, 25, 32 and 40 cover all model types
SWD, SWD3 and ZSWD3 (also proportional throttles type
EFP1; see page 89) and may contain redundant seals for a
particular model designation.
Nominal Eaton-Vickers Seal Kit Model Code:
Size Standard Seals “F3” Seals
CVU-16-(Z)SWD(3) 02-157167 02-157168
CVU-25-(Z)SWD(3) 02-157536 02-157537
CVU-32-(Z)SWD(3) 02-157165 02-157616
CVU-40-(Z)SWD(3) 02-157679 02-157680
CVU-50-SWD3 02-157675 02-157676
CVU-63-SWD3 02-157677 02-157678
Ordering Procedure
Order by model code and quantity. Note that size 03 pilot
valves for mounting on to SWD3 and ZSWD3 models (and
their mounting bolts) must be ordered separately.
Model Bolt Details Recommended Length Eaton-Vickers Bolt Kit no. Torque to lbf ft
CVU-16-SWD 5/16”–18 UNC 11/2” BKDNG16700 26
CVU-16-(Z)SWD3 5/16”–18 UNC 33/4” On request 26
CVU-25-SWD 1/2”–13 UNC 13/4” On request 81
CVU-25-(Z)SWD3 1/2”–13 UNC 3 BKCGV06603 81
CVU-32-SWD 5/8”–11 UNC 3 BK1015 210
CVU-32-(Z)SWD3 5/8”–11 UNC 4 BKFG06646 210
CVU-40-SWD 3/4”–10 UNC 31/4” On request 370
CVU-40-(Z)SWD3 3/4”–10 UNC 31/2” BKCG10616 370
CVU-50-SWD3 3/4”–10 UNC 3 BKDNG50708 430
CVU-63-SWD3 11/4”–7 UNC 53/4” On request 885
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 105
Special Function Valves
General Information
Special function cartridge valves are:
•1:0.25arearatiocartridgeforlowpressurereliefand
•DirectionalfunctionmodelCV**-**-C025
This section of the catalog includes circuitry for applying
hydrostat functions to flow control throttles, using standard
cartridge relief components and control modules.
1:0.25 Area Ratio
Cartridge: Sizes 16 to 40
This cartridge arrangement has a 1:0.25 area ratio and oper-
ates with a pilot flow entering at X, the pilot flow rate being
governed by the integral pressure compensated flow control.
See Figure 44. Pilot flow passes out of Z1 to an appropriate
pilot relief valve which creates pressure on the top of the pilot
piston. This means the main valve will open at, and maintain,
a pressure at A of 25% of pilot pressure.
When used with an electrohydraulic proportional pressure
control (connected to Z1 port), pressures as low as 1,5 bar
(22 psi) are controllable at port A, making it ideal for plastics
injection molding machine applications. The area ratio of the
large piston to sleeve seat is 1:1.1. The Z1 port should never
be blocked; doing so could result in pressure intensification at
this port. This low pressure relief valve can also be used as a
directional control back pressure valve, or as a blocking valve.
When the back pressure function is operational, port Z2 must
be drained to the reservoir. The valve can be locked shut by
applying at Z2 a pressure greater than any at A.
The following models are available; insert and cover are
ordered separately:
Cover Insert
CVCS-16-C025-*2(9)-20 CVI-16-C025-50
CVCS-25-C025-*2(9)-20 CVI-25-C025-50
CVCS-32-C025-*2(9)-20 CVI-32-C025-50
CVCS-40-C025-*2(9)-20 CVI-40-C025-50
Pilotreliefvalve
4-210 bar
(58-3045 psi)
Other control
functions
1:1mainreliefvalve
1-52,5 bar
(14.5-760 psi)
Pilotflow
Screw
Injection
cylinder
Motor
rotation
Pressurecompensated
flowcontrol
From injectioncircuitry
A
XZ
1
Z
2
B
A
Z1
Z2
B
A
X
B
X Z
1
Z
2
CVCS-**- C025
Cover
CVI-**-C025
Insert
Typical Application
PlasticsInjectionMolding
Figure 44
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012106
Special Function Valves
Normally Open Prefill Valve:
Sizes 25, 32, 40, 50 and 63
Normally open cartridge valves require an external pilot signal
to close the valve against system pressure. This valve range
is ideally suited for applications requiring a prefill valve or
decompression valve.
The main spool consists of a sleeve with a sharp edged seat
and a piston. A spring holds the piston in the open position.
Pressure at control port X forces the poppet against the
spring to close the valve.
Sizes 25, 32, 40, 50 and 63
Area ratios are defined as 1:1.05. Pressure to close = 2,5 bar
(36.3 psi) + P
A
+ 0.05 P
B
.
Cover Insert
CVCS-25-OD-*-20 CVI-25-OD105-50
CVCS-32-OD-*-20 CVI-32-OD105-50
CVCS-40-OD-*-20 CVI-40-OD105-50
CVCS-50-OD-20 CVI-50-OD105-50
CVCS-63-OD-20 CVI-63-OD105-50
Figure 45
X
A
B
CVI-**-OD105
Insert
A
B
XA
P
CVCS-**- OD
Cover
Sizes 25, 32, 40, 50 and 63
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 107
Hydrostat Functions for Use in Fixed
Delivery Pump Systems
Where the flow rate through a throttle is required to be inde-
pendent of variations in load and/or system pressure, a hydro-
stat function should be designed into the system. A 3-way,
bleed-off hydrostat can be built from standard relief valve
elements presented in this catalog. The adjacent diagrams,
Figures 46, 47 and 48, show the circuitry of a 3-way hydrostat
together with three control options.
Figure 46. The pressure drop across the proportional throttle
can be varied by adjusting the setting of the pilot relief valve
in the CVCS-**-C type cover (see page 43). Normally, with
the flow rate through the proportional throttle being less
than the pump delivery, excess pump flow will be by-passed
through the cartridge insert (flow A to B) to reservoir.
Variations in load and/or system pressure will increase or de-
crease flow across the pilot relief valve, thereby causing the
spool of the insert to move to either increase or decrease the
by-pass flow to re-establish the correct differential pressure
across the throttle.
A separate main system relief valve (not shown) should be
provided for controlling the maximum system pressure.
Figure 47. The CVCS-**-C cover and CVI-**-D10 insert here
act as the maximum pressure relief valve. A sensing line is
taken from auxiliary port Z1 to a separate module which con-
trols the pressure differential.
Figure 48. By using a type CVCS-**-C3 over (integral interface
for size 3 pilot valve), a proportional pressure control valve
KCG-3 allows the maximum pressure to be varied from a suit-
able electrical signal. A typical application would be where the
final holding pressure on an actuator needs to be varied (e.g.
curing/setting time).
ABPT
CVGC-3
Module
Proportionalthrottle, type:
CVU-**-EFP1
BA
x
y
CVI-**-D10
Insert
P TBA
XYZ
1
AP
CVCS-**-C
Cover
Proportional throttle,ty pe:
CVU-**-EFP1
BA
x
y
CVI-**-D10
Insert
XYZ
1
AP
CVCS-**-C
Cover
DGMA-3-C1
Crossoverplate
ABPT
CVGC-3
Module
P TBA
Proportionalthrottle, type:
CVU-**-EFP1
BA
x
y
CVI-**-D10
Insert
XYZ
1
AP
CVCS-**- C3
Cover
DGMA-3-C1
Crossover
plate
PT
AB
KCG-3
Proportional
pilotvalve
A
B
A
B
A
B
Differentialpressure setting
Maximumpressuresetting
Differential pressure setti ng
Differentialpressuresetting
Proportionalpressure setting
Figure46
Figure47
Figure48
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012108
Model Codes Special Function Valves
1 Seal Material
F3 - Special seals. See ‘‘Flu-
ids and Seals’’ on page 17.
Omit for standard seals.
2 Model
CVCS - Cartridge valve cover
to ISO 7368
3 Nominal size to ISO
7368 (DIN 24342)
Applicable to function type
CO25 OD*
16 - 06 (NG16) • -
25 - 08 (NG25) • •
32 - 09 (NG32) • •
40 - 10 (NG40) • •
50 - 11 (NG-50) • •
63 - 12 (NG-63) • •
4 Function
C025 - 1:0.25 ratio (used with
insert type C025)
OD - Normally open (prefill)
5 Design number, 20 se-
ries
See page 116 for sizes of fac-
tory-fitted standard orifices.
Other orifice sizes and loca-
tions can be fitted by spe-
cial arrangement with your
Eaton-Vickers representative.
Non-standard orifice require-
ments should be defined as
follows:
6 Pilot control orifice
location
Specify port location for non-
standard orifice, e.g. ‘‘AP’’,
followed by orifice size code,
see 7. Repeat as neces-
sary for further nonstandard
requirements.
7 Orifice size
Specify non-standard orifice
size code, see tables on page
117.
(F3-) CVCS - ** - **** - 20 (-*** **)
1 2 4 63 5 7
CVCS Covers
Eaton-Vickers type “CVCS” cartridge covers featured in this
catalog conform to installation requirements of ISO 7368
and DIN 24342. All features must be specified when order-
ing; those in brackets ( ) are optional or apply only to specific
models.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 109
Model Codes Special Function Valves
1 Seal Material
F3 - Special seals. See ‘‘Flu-
ids and Seals’’ on page 17.
Omit for standard seals.
2 Model
CVI - Cartridge valve insert
3 Nominal size to ISO
7368 (DIN 24342)
Applicable to function type
CO25 OD105
16 - 06 (NG16) • -
25 - 08 (NG25) • •
32 - 09 (NG32) • •
40 - 10 (NG40) • •
50 - 11 (NG-50) • •
63 - 12 (NG-63) • •
4 Function
C025 - 1:0.25 ratio (used with
insert type C025)
OD105 - Normally open
(prefill)
5 Design number, 50 se-
ries
Note: A nameplate is sup
plied with each insert for
fixing to the cover to identify
the insert in use.
(F3-) CVI - ** - **** - 50
1 2 43 5
CVI Inserts
For availability of inserts by size and function, see page 7. All
features must be specified when ordering; those in brackets
() are optional.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012110
Special Function Valves
B E Location for nameplates
Size A C025 OD C D C025 OD Type C025 Type OD
16 66.0 (2.6) 48.0 (1.89) 36.0 (1.42) 14.0 (0.55) 17.0 (0.67) 7.0 (0.28) Side Z2
25 86.0 (3.39) 45.0 (1.77) 48.0 (1.89) 25.0 (0.98) 15.0 (0.59) 21.0 (0.83) 11.0 (0.43) Side Z2 Side Z2
32 101.6 (4.00) 55.0 (2.17) 60.0 (2.36) 30.0 (1.18) 25.0 (0.98) 25.0 (0.98) 15.0 (0.59) Side Z2 Side Z2
40 126.0 (4.96) 53.0 (2.09) 60.0 (2.36) 35.0 (1.38) 25.0 (0.98) 29.0 (1.14) 19.0 (0.75) Side Z2 Side Z2
50 140.0 (5.51) 65.0 (2.56) 44.0 (1.73) 36.0 (1.42) 19.0 (0.75) Side Z2
63 180.0 (7.09) 85.0 (3.35) 48.0 (1.89) 42.0 (1.65) 29.0 (1.14) Side Z2
3.0
(0.12) max.
3.0
(0.12) max.
EE
B
D
B
C
C
D
Nameplate: CVCS
and 2 holes for attachment of
CVI (insert) nameplate
Nameplate: CVCS
and 2 holes for attachment of
CVI (insert) nameplate
X
Y
Z
2
Z
1
X
Y
Z
2
Z
1
A sq.
3.0
(0.12) max.
3.0
(0.12) max.
A sq.
Orientation
Pin
Location of optional
orifice ‘Z1’
Location of standard
orifice ‘X’
Mounting face
See page 120 for
information on bolt sizes, bolt kits
and assembly torques
(Bolts need to be ordered separately)
CVCS-**-C025
Sizes16to40
XAP
Z
1
Z
2
Y
XZ
1
Z
2
AP
CVCS-**-OD
Sizes25to63
Dimensions
mm (inch)
■ For thread sizes and orifice kits see page 116.
•
Minimum clearance for removal of cover from manifold
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 111
Special Function Valves
Location for
Size A B C D E Nameplates
25 86.0 (3.39) 54.0 (2.13) 25.0 (0.98) 15.0 (0.59) 22.0 (0.87) Side Z2
32 101.6 (4.00) 70.0 (2.76) 30.0 (1.18) 25.0 (0.98) 31.0 (1.22) Side Z2
40 126.0 (4.96) 70.0 (2.76) 35.0 (1.38) 25.0 (0.98) 33.0 (1.30) Side Z2
50 140.0 (5.51) 78.0 (3.07) 44.0 (1.73) 36.0 (1.42) 34.0 (1.34) Side Z2
63 180.0 (7.09) 90.0 (3.54) 48.0 (1.89) 42.0 (1.65) 43.0 (1.69) Side Z2
Location of optional orifice Z2
Location of optional orifice Z2
64.0 (2.52)
max. for
coil removal
Nameplate: cvcs
and 2 holes for
attachement of CVI
(insert) nameplate
Location at orifice X
See page 120 or
information on
bolt sizes, bolt kits
and assembly torques
(Bolts need to be
ordered separately)
Orientation Pin
3.0
(0.12)
max.
DG4V-3(S)-2AL/BL
DC sols: 110.0 (4.33)
AC sols: 100.0 (3.94)
DG4V-3(S)-2A/B
DC sols: 110.0 (4.33)
AC sols: 100.0 (3.94)
91.0
(3.58)
60.0
(2.36)
Mounting face
E
E
B
D
C
A sq.
Z1
Z2
X
Y
Interface to ISO 4401 size 03
(ANSI/B93.7M-D03)
4 mounting holes tapped according to
M5-6H x 12.0(0.47) deep
For port tappings for
plug/optional orifices
(according to functional symbol)
see page 117
CVCS-**-OD3
Sizes25to63
■ For thread sizes and orifice kits see page 116.
•
Maximum clearance for removal of cover from
manifold.
▲ Size 03 pilot control valve to be ordered separately.
Recommended model Eaton-Vickers DG4V-3.
DG4V-3 with coil type U.
DG4V-3-70
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012112
Pilot Control Modules
Basic Characteristics
Max. pressure up to 350 bar(5000 psi) Flow ratings:
Mounting interface ISO 4401 size 03 (with additional orienta-
tion pin); ANSI/B93.7M-D03
General Description
A range of pressure relief, shuttle and pilot operated check
functions provide additional functions allowing pilot control
circuitry to be directly mounted on to the size 03 mounting
face of CVC(S) covers, either with, or independent of, a sole-
noid operated pilot valve. Their design and port connections
are specific to their use in piloting cartridge valves.
These six modules were designed to satisfy the needs of
Eaton-Vickers application and systems engineers in providing
effective solutions to a wide variety of pilot control require-
ments in cartridge valve systems.
For other useful size 03 pilot control modules see Eaton-Vick-
ers SystemStakTM valves type DG**M-3, see GB-C-2027.
Functional Symbols
Application of Pilot Control Modules
The examples of uses for control modules shown on the
next page are taken from actual applications, and serve to
illustrate the types of control circuitry that can be built directly
on to the size 03 interface of the cartridge valve covers. For
assistance with other possible applications for size 03 control
modules, contact your Eaton-Vickers representative.
Pressure Control with Remote Electrical Selection
Figures 51 and 56 show pressure relief functions based on
the directional cover type D1/D3. In Figure 51 the system is
vented when the solenoid of the pilot valve is de-energized;
when the solenoid is energized the system pressure is limited
to the setting of the CVGCA-3 module.
In Figure 52 the system is vented when both solenoids of the
pilot valve are de-energized. The maximum system pressure
is set at the CVGCPA-3 module and selected by energizing
solenoid “b”. A lower pressure is set by the CVGC-3 module
and selected by energizing solenoid “a”.
Direction Control Options
Several direction control functions are possible by using the
shuttle and pilot-operated check modules.
In Figure 53 the cartridge valve insert functions as a pilot-op-
erated check valve. At all times flow is possible from A to B.
Flow from B to A is possible only when port Z2 is pressurized.
In Figure 54 flow is not possible from B to A. Flow from A to
B is possible only when there is no pressure at port Z2; the
insert is locked closed when pressure is applied at port Z2.
In Figure 55 the solenoid-operated pilot control valve is
mounted directly on to the control module. Flow A to B is
possible only when the solenoid is energized. At no time is
flow from B to A possible.
Figure 56: The addition of the pilot-operated check module
CVGPC1-3 to the electrically monitored model type CVU-**-
ZSWD3 adds a further degree of security to a gate guard con-
trol system. Pressure at port B holds the main spool tightly
closed until an external pilot pressure is applied to port Z2.
This pilot pressure unseats the pilot-operated check module
to open AP to port Y, and at the same time opens the main
poppet.
10 L/min(2.6USgpm)
at p=5bar (72psi)
5L/min (1.3 USgpm)max.
Flow ratings:
CVGC-3
CVGCA-3
CVGCPA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
CVGC-3
CVGCPA-3
CVGCA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
PA BT
PA T
PA BT
PA BT
PA BT
PA T
PA BT
PA T
PA BT
PA BT
10 L/min(2.6USgpm)
at p=5bar (72psi)
5L/min (1.3 USgpm)max.
Flow ratings:
CVGC-3
CVGCA-3
CVGCPA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
CVGC-3
CVGCPA-3
CVGCA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
PA BT
PA T
PA BT
PA BT
PA BT
PA T
PA BT
PA T
PA BT
PA BT
10 L/min(2.6USgpm)
at p=5bar (72psi)
5L/min (1.3 USgpm)max.
Flow ratings:
CVGC-3
CVGCA-3
CVGCPA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
CVGC-3
CVGCPA-3
CVGCA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
PA BT
PA T
PA BT
PA BT
PA BT
PA T
PA
BT
PA T
PA BT
PA BT
10 L/min(2.6USgpm)
at p=5bar (72psi)
5L/min (1.3 USgpm)max.
Flow ratings:
CVGC-3
CVGCA-3
CVGCPA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
CVGC-3
CVGCPA-3
CVGCA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
PA BT
PA T
PA BT
PA BT
PA BT
PA T
PA BT
PA T
PA BT
PA BT
10 L/min(2.6USgpm)
at p=5bar (72psi)
5L/min (1.3 USgpm)max.
Flow ratings:
CVGC-3
CVGCA-3
CVGCPA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
CVGC-3
CVGCPA-3
CVGCA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
PA BT
PA T
PA BT
PA BT
PA BT
PA T
PA BT
PA T
PA
BT
PA BT
10 L/min(2.6USgpm)
at p=5bar (72psi)
5L/min (1.3 USgpm)max.
Flow ratings:
CVGC-3
CVGCA-3
CVGCPA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
CVGC-3
CVGCPA-3
CVGCA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
PA BT
PA T
PA BT
PA BT
PA BT
PA T
PA BT
PA T
PA BT
PA BT
10 L/min(2.6USgpm)
at p=5bar (72psi)
5L/min (1.3 USgpm)max.
Flow ratings:
CVGC-3
CVGCA-3
CVGCPA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
CVGC-3
CVGCPA-3
CVGCA-3
CVGMS1-3
CVGS1-3
CVGPC1-3
PA BT
PA T
PA BT
PA BT
PA BT
PA T
PA BT
PA T
PA BT
PA
BT
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 113
CVGCPA-3
CVGCA-3
CVGC-3
CVGMS1-3
CVGS1-3
CVGPC1-3
CVGPC1-3
CVU-**-ZSWD3
PT
BA
b
XYZ
1
Z
2
a
P
T
BA
TP
a
XYZ
1
Z
2
P
T
XYZ
1
Z
2
B
A
Pilot
XYZ
1
Z
2
B
A
BA
TP
b
XYZ
1
Z
2
B
A
Pilot
Pilot
Y
X
B
A
Z
1
Z
2
CVCS-**-D*
CVCS-**-D*
CVCS-**-D*
CVCS-**-D*
CVCS-**-D*
CVI-**-D10
CVI-**-D10
CVI-**-D16
CVI-**-D16
CVI-**-D16
Figure51
DG4V-3(S)- 2AL
DG4V-3(S)- 0C
DG4V-3(S)- 2
A
Figure52
Figure53
Figure54
65erugiF55erugiF
AP
AP
PAPA
AP
AP
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012114
Model Codes Pilot Control Modules
1 Seal material
F3 - Special seals. See ‘‘Flu-
ids and Seals’’ on page 17.
Omit for standard seals.
2 Model
CVG - Cartridge valve mod-
ule, gasket mounted
3 Function and circuitry
C - Relief module; function
P-T
CA - Relief module; function
A-T
CPA - Relief module, function
P and A-T
4 Interface (ANSI/B93.7M-
D03)
3 - ISO 4401, size 03
5 Type of pressure adjust-
ment
K - Micrometer adjuster with
keylock
M - Micrometer adjuster
without lock
W - Wrench adjustment with
hex locknut
6 Adjustable pressure
range
125 - 3–125 bar (44–1800 psi)
250 - 5–250 bar (73–3600 psi)
350 - 8–350 bar (116–5000
psi)
7 Design number, 1* se-
ries
Subject to change. Installa-
tion dimensions unchanged
for design numbers 10 to 19
inclusive.
1 Seal material
F3 - Special seals. See ‘‘Flu-
ids and Seals’’ on page 17.
Omit for standard seals.
2 Model
CVG - Cartridge valve mod-
ule, gasket mounted
3 Function and circuitry
See ‘‘Functional Symbols”
for precise circuitry connec-
tions
S1 - Shuttle valve with size
03 interface on one side only
MS1 - Modular shuttle valve
(size 03 interface on both
sides)
PC1 - Pilot operated check
function with size 03 inter-
face on one face only
4 Interface (ANSI/B93.7M-
D03)
3 - ISO 4401, size 03
5 Orifice selections
Non-standard assemblies
(e.g. modules with fitted
orifices) may be supplied by
special arrangement. Please
consult your Eaton-Vickers
representative before order-
ing.
Typical examples include:
P08 - Orifice size 0,8 mm in
P line
T06 - Orifice size 0,6 mm in
T line
B09 - Orifice size 0,9 mm in
B line
A10 - Orifice size 1,0 mm in
A line
Specify orifice requirements
by port location(s) followed
by orifice code (see table on
page 117) e.g. P07-B09.
6 Design number
1* series - For types S and
MS
2* series - For type PC Sub-
ject to change. Installation
dimensions unchanged for
design numbers 10 to 19, or
20 to 21 inclusive.
(F3-) CVG - *** - 3 - * - *** - 1*
(F3-) CVG **1 - 3 - [P*-T*-A*-B*] - **
1
1
2 3 6
2 2
4
4
5
5 6
7
Relief Functions
Auxiliary Functions
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 115
Pilot Control Modules
45,5(1.79)
P
T
A
P
T
B
CVGC-3
Type K:
Adjustment of valve settingis only possible
while key is inserted and turned to engage
drivingpin.When key is removed, adjuster
knob canbefreelyspun and does not
engagewithmechanism.
Types K and M adjusters
Type Konly: 43,0 (1.69)
clearancetoremovekey
127,0(5.0) max.
4 holes 5,60
(0.22) dia.
46,0
(1.81)
4,0(0.157)
151,25 (5.95) max.
40,0
(1.57)
Adjuster
10,0 (0.39) sq.
Hex. locknut
22,0 (0.87) A/F
Mountingsurface conforms to ISO4401, size 03 (with additional orientationpin/pin hole); ANSI/B93.7M-D03.
A
CVGCPA-3CVGCA-3
CVGMS1-3
P
PT
T
A
BA
P
T
A
P
T
B
4 holes 5,60 (0.22) dia.
40,0(1.57)
A
CVGS1-3
P TBA
CVGPC1-3
P TBA
P
T
B
4 holes 5,60 (0.2 2) dia.
c’bored 9,5(0.37) dia.
40,0
(1.57)
A
76,0(3.04) 76,0 (3.04)
85,0 (3.35)
40,5(1,59)
32,0 (1.26)
76,0 (3.04)
106,0(4.17) max.
45,25
(1.74)
35,0
(1.38) dia.
46,0
(1.81)
46,0
(1.81)
49,0
(1.93)
max.
6,0(0.24)
77,0(3.03)
49,0
(1.93)
max.
49,0
(1.93)
max.
B portintype
CVGCA-3 only
B
Type W adjuster
P
PT
T
A
BA
P
PT
T
A
A
P
PT
T
A
BA
B
40,0 (1.57) clearance to remove protective cap
B
M5 x7,0 (0.27) deep for
optional orifice or plug
M5 x7,0 (0.27) deep for
optional orifice or plug
Nameplate
Nameplate Nameplate
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012116
Supplementary Data
Standard Factory-Fitted Orifice Sizes (mm)
Sizes and locations of standard factory-fitted orifices. Other
orifice sizes (and other locations) can be fitted by special
arrangement with your Eaton-Vickers representative. Non-
standard orifice requirements should be defined according to
CVC(S and CVI model codes. For available orifice kits, which
should be ordered separately, see next page.
Orifice Size
Function Port 16 mm 25 mm 32 mm 40 mm 50 mm 63 mm
CVC(S) covers
A X 1,0 1,2 1,3 1,4 1,6 1,8
A1/A3 AP
2
1,0 1,2 1,2 1,4 – –
C and SC AP 1,0 1,2 1,2 1,4 – –
X 0,9 0,8 0,9 1,0 – –
C1/C3 and AP 1,0 1,2 1,2 1,4 – –
SC1/SC3 X 0,9 0,8 0,9 1,0 – –
C025 AP 1,0 0,8 0,8 0,8 – –
Z
1
1,0 1,0 1,0 1,0 – –
D1/D3 AP
1
1,0 1,2 1,3 1,4 – –
D2/D5 AP – – – – 1,6 1,8
DC1/DC3 AP 1,0 1,2 1,2 1,4 – –
N X 1,0 1,2 1,3 1,4 1,6 1,8
OD – – 1,2 1,2 1,4 – –
PC AP 1,0 1,2 1,3 1,4 – –
U AP 1,2 1,2 1,2 1,4 – –
U1/U3 AP 1,2 1,2 1,2 1,4 – –
W AP 1,0 1,2 1,3 1,4 – –
W11/W13 A 1,0 1,2 1,3 1,4 – –
W31/W33 A 1,0 1,2 1,3 1,4 – –
X1/X3 AP 1,0 1,0 1,2 1,4 – –
CVI inserts
C10F – 0,8 0,8 0,9 1,0 – –
D105V – 1,0 1,2 1,2 1,4 – –
U – 0,8 0,8 1,0 1,4 – –
Cover Size
Orifice Designation 16 25 32 40 50 63
AP, AP1, AP2 M5 M6 M6 M6 M6 M6
P, A, B, T M5 M6 M6 M6 M6 M6
X, Z1, Z2 M5 M6 M6 M6 M10 M10
Orifice Thread Sizes
Unless otherwise stated on installation drawings (e.g. dynam-
ic covers CVCS-50-ZD(A)* and CVCS-63-ZD(A)* on page 75)
the following thread sizes are provided at designated orifice
locations.
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 117
Optional Orifice Kits For Fine Tuning
of Cartridge Valve Systems
Orifice Orifice
Size (mm) code Valve Cover Size & Orifice Kit Number ■
Metric Threads 16: 25, 32 & 40: 50 & 63:
992747 ■ 992748 ■ 992749 ■
M5 M6 M10
0,7 07 • •
0,8 08 • • •
0,9 09
1,0 10 • • •
1,2 12 • • •
1,3 13
1,4 14
1,5 15 • • •
1,6 16
1,8 18 •
Solid 00 • • •
plug
■ Order orices/plugs by kit number. Kit contains three of each orice and plug indicated
Fitting New Orifice Plugs
Fitting New Orifice Plugs When fitting new orifice plugs the
following assembly instructions should be observed:
1. Do not re-use any orifice plug that has been removed from
an assembly.
2. Parts must be assembled in dry conditions.
3. Apply a thin coating of Loctite grade 222 (or equivalent) to
the internal thread only.
4. Do not apply Loctite (or equivalent) to the orifice plug.
5. Assemble the plug, tightening to the recommended
torque level (see “Assembly Torques” tables).
Assembly Torques
Orice plug External closure plug as
applicable
External closure plug, Torque, lbf ft
inch thread T
2
5/16”-24 UNF 7 to 7.5
3/8”-24 UNF 9 to 9.2
7/16”-20 UNF 11 to 12
1/2”-20 UNF 15 to 16
9/16”-18 UNF 21 to 23
3/4”-16 UNF 39 to 43
7/8”-14 UNF 55 to 61
Orifice plug, Torque,
metric thread T
1
Nm
M5 2,8 to 3,2
M6 4,3 to 4,7
M8 7,0 to 9,0
M10 10,0 to 12,0
External closure plug, Torque, Nm
BSPF thread T
2
G 1/8” 9,8 to 10,2
G 1/4” 19,8 to 20,2
G 3/8” 38,8 to 39,2
G 1/2” 58,8 to 59,2
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012118
Orifice Sizing Guide
Use Figure 57 to approximate the opening and closing times
of poppets with different size orifices. From the chart, deter-
mine the cartridge valve’s insert poppet area, poppet stroke,
and resultant displacement volume. The chart shows full
stroke displacement of poppets having 1:1.5 and 1:1.05 area
ratios.
From the curves, determine pressure drop across the orifice.
For example, if there is a 140 bar (2000 psi) p across a 0,5
mm orifice in a 25 mm valve, the poppet will travel its full
stroke in about 200 milliseconds.
The calculation provides a starting point for determining the
right orifice for the application. The final determination is
the application itself, and fine tuning should be done on the
machine installation.
Nominal poppet Displacement
Valve Poppet area AP stroke▲
Size mm2 in2 mm in cm3 in3
16 283.53 0.44 9.0 0.35 2.55 0.15
25 615.75 0.95 11 0.45 6.77 0.43
32 1017.88 1.58 14 0.55 14.25 0.87
40 1661.90 2.58 19 0.75 31.57 1.94
50 2463.01 3.82 21 0.83 51.72 3.17
63 3848.45 5.97 23 0.90 88.51 5.37
▲ The stroke of some poppet types varies slightly from the gures given. However, this data is valid for estimating response times for standard insert types C10F, D105(V) and **16,
using above formulae. For response data of dynamic models type ZD(N)105, see page 71.
Displacement (in
3
)x60 (sec ∕min)
Flow rate (in
3
∕min)
(0 27 in
3
)(60 sec∕min)
80 (in
3
∕min)
=0200sec
(4,42cm
3
)(60 sec∕min)
1300(cm
3
∕min)
=0,200 sec
Displacement (cm
3
)x60 (sec ∕min)
Flow rate (cm
3
∕min)
.
.
2000
4000
6000
8000
0 10050 150200 250
300
350
bar
0 1000 2000 3000 4000 5000 psi
0
100
200
300
400
500
in
3
/min cm
3
/min
Pressure drop
1.3mm1.2 mm
1.0mm
0.8mm
0.5mm
Flow through orifice
Flow rate
Displacement (in
3
)x60 (sec ∕min)
Flow rate (in
3
∕min)
(0 27 in
3
)(60 sec∕min)
80 (in
3
∕min)
=0200sec
(4,42cm
3
)(60 sec∕min)
1300(cm
3
∕min)
=0,200 sec
Displacement (cm
3
)x60 (sec ∕min)
Flow rate (cm
3
∕min)
.
.
2000
4000
6000
8000
0
10050 150200 250
300
350
bar
0 1000 2000 3000 4000 5000 psi
0
100
200
300
400
500
in
3
/min cm
3
/min
Pressure drop
1.3mm1.2 mm
1.0mm
0.8mm
0.5mm
Flow through orifice
Flow rate
Figure 57
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 119
Pressure Drop at Other Viscosities
Pressure drop data in this catalog is generally given for a fluid
viscosity of 36 cSt (168 SUS). For model types CVU-**(Z)
SWD(3) the reference viscosity is 21 cSt (102 SUS). The
graph shows the approximate change in pressure drop for a
range of other viscosities. To determine the pressure drop for
any given viscosity, multiply the published value by the factor
applicable to the required viscosity.
Example Shown
For an actual fluid viscosity of 32 cSt (150 SUS), the pressure
drop correction factors are:
– approx. 1.1 to be applied to 21 cSt (102 SUS) data
– approx. 0.95 to be applied to 36 cSt (168 SUS) data
0.8
1
1.2
1.4
20 30 40 6050 70 80
cSt
SUS
150200 250 300350 400
Correctionfactor
0.6
0.8
1
1.2
1.4
50
10
100
1.6
Correction factor
Applyto datagiven at
21 cSt (102 SUS)
Apply to datagiven at
36 cSt(168 SUS)
Example
Example
Example
21 36
168
102
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012120
Mounting Bolt Data
Inch Bolt Kits
Bolts are UNC, grade 8 or better
Cartridge Valve Covers, CVC(S)
Cover Bolt Model Used with Recommended Bolt Torque
Size Size Number Model Type lbf ft (Nm)
Dynamic Models
16
5
/
16
” - 18 x 4 BKDNG16-712 ZD1/ZDA1 26 (35)
25
1
/
2
” - 13 x 4 BK02-157290 ZD1/ZDA1 81 (110)
32
5
/
8
” - 11 x 4
1
/
4
” BK02-157291 ZD1/ZDA1 210 (285)
40
3
/
4
” - 10 x 5 BK02-157292 ZD1/ZDA1 370 (500)
50
3
/
4
” - 10 x 6 BK02-157293 ZD1/ZDA1 429 (580)
63 1
1
/
4
” - 7 x 6 BK02-300324 ZD1/ZDA1 888 (1200)
Other Models
16
5
/
16
” - 18 x 1
1
/
2
” BKDNG16-700 All models 26 (35)
25
1
/
2
” - 13 x 1
1
/
2
” BKDPNG25-704 All models 81 (110)
32
5
/
8
” - 11 x 2 BKDNG32-713 All models 210 (285)
40
3
/
4
” - 10 x 2
1
/
4
” BKDPNG40-706 All models 370 (500)
50
3
/
4
” - 10 x 3 BKDNG50-708 All models 429 (580)
63 1
1
/
4
” - 7 x 3
1
/
2
” BKDNG63-710 All models 888 (1200)
Cover Size D
1
D
2
16 9,0 (0.35) 15,0 (0.59)
25 14,0 (0.55) 20,0 (0.79)
32 18,0 (0.71) 26,0 (1.02)
40 22,0 (0.87) 33,0 (1.30)
50 22,0 (0.87) 33,0 (1.30)
63 33,0 (1.30) 49,0 (1.93)
D
1
D
2
dia.
spotface/counterface
“C” -- See individual
installation drawings
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 121
Mounting Bolt Data
Recommended Bolt Torque
Cover Size Bolt Size Model Number Nm (lbf ft)
Dynamic Models
16 M8 x 100 Metric covers, sizes 35 (26)
25 M12 x 100 16 to 40, are supplied 110 (81)
32 M16 x 110 with mounting bolts 285 (210)
40 M20 x 130 (B29 in model code) 500 (370)
50 M20 x 150 BK02-157288 580 (429)
63 M30 x 150 BK02-157289 1200 (888)
Other Models
16* M8 x 40 BKDNG16-701M 35 (26)
25* M12 x 40 BKDPNG25-705M 110 (81)
32* M16 x 55 BKDNG32-718 285 (210)
40* M20 x 60 BKDPNG40707M 500 (370)
50 M20 x 80 BKDNG50-709M 580 (429)
63 M30 x 90 BKDNG63-711M 1200 (888)
*Refer installation drawing on Page No. 86 for Valvistor
Recommended Bolt Torque
Pilot Valve Bolt Size Model Number Nm (lbf ft)
Dynamic Models
DG4V-3 M5 x 30 BK616452M 7-9 (63-80)
DG4V-3 + CVGC-3 M5 x 70 BK464125M 7-9 (63-80)
KCG-3 M5 x 50 BKDG3-699M 7-9 (63-80)
KBCG-3 M5 x 30 BK616452M 7-9 (63-80)
Metric Bolt Kits
Bolts are Class 12.9 (ISO 898) or stronger
Cartridge Valve Covers, CVC(S)
Pilot Valves
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012122
Seal Kits
Product Standard F3
Dynamic Cover
CVCS-ZD(3) 16/25/32 02-156955 02-156956
CVCS-ZD(3) 40 02-156953 02-156954
CVCS-ZD(3) 50 02-156951 02-156952
CVCS-ZD(3) 63 02-156967 02-156968
Dynamic Insert
CVI-16-ZD(N)105-10 02-156965 02-156966
CVI-25-ZD(N)105-10 02-156963 02-156964
CVI-32-ZD(N)105-10 02-156961 02-156962
CVI-40-ZD(N)105-10 02-156959 02-156960
CVI-50-ZD(N)105-10 02-156957 02-156958
CVI-63-ZD(N)105-10 02-156969 02-156970
Standard Inserts (incl. OD, OD3)
CVI-16-** 02-420392 02-420393
CVI-25-** 02-420394 02-420395
CVI-32-** 02-420396 02-420397
CVI-40-** 02-420398 02-420399
CVI-50-** 02-420390 02-420391
CVI-63-** 02-420496 02-420497
Valvistor Insert
CVI-16-** 456173 02-157617
CVI-25-** 456926 02-157618
CVI-32-** 479449 02-157619
CVI-40-** 478732 514808
CVI-50-** 478733 02-157620
CVI-63-** 456798 02-157621
Units (CVU-**)
▲
Size 16 02-157167 02-157168
Size 25 02-157536 02-157537
Size 32 02-157615 02-157616
Size 40 02-157679 02-157680
CVU-50-SWD3-** 02-157675 02-157676
CVU-63-SWD3-** 02-157677 02-157678
▲ Units include CVU-**-ZSWD3, -SWD(3) and -EFP1
Standard: F3:
Product Complete Interface Only Complete Interface Only
Valvistor Cover Assembly
CVCS-16-** 02-157672 02-157613 02-157671 02-157614
CVCS-25-** 02-157674 456925 02-157673 02-157612
CVCS-32-** 02-157905 02-310967 02-157906 02-310968
CVCS-40-** 02-157712 02-310969 02-157713 02-310970
CVC(S)-50-** 02-310971 02-310972 02-310973 02-310974
CVC(S)-63-** 02-310975 456799 02-310976 02-310977
Standard: F3:
Product Complete Interface Only Complete Interface Only
Standard cover assemblies (incl. OD)
CVCS-16-** 02-420579 02-420578 02-420567 02-420566
CVCS-25-** 02-420581 02-420580 02-420569 02-420568
CVCS-32-** 02-420583 02-420582 02-420571 02-420570
CVCS-40-** 02-420585 02-420584 02-420573 02-420572
CVCS-50-** 02-420587 02-420586 02-420575 02-420574
CVCS-63-** 02-420589 02-420588 02-420577 02-720576
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 123
Insert Cavity Dimensions to ISO 7368,
Sizes 16 to 63
Eaton-Vickers cartridge valve covers (type CVCS), inserts (type
CVI) and complete units (type CVU) conform to installation
requirements of ISO 7368 and DIN 24342.
X
Y
Z
1
B
A
15
_
15
_
t
6
max.
t
7
amin .
amin .
b
t
5
d
4
d
6
d
3
d
2
d
1
t
1
t
3
t
4
x
1
x
3
x
4
y
1
x
5
y
3
y
4
y
2
Z
2
x
2
Y
Ra
X
Ra
X
Ra
Y
Ra
d
5
4places.
PortsX,Z
1
,Y,Z
2
as required:
see symbol foreach selected
function
Code B*-**-2- A only:
g
1
dia. xg
2
deep
(for orientationpin
fitted in cover)
Z
Ra
t
2
t
8
UA
AW
A
Datum point
y5
Code B*-**-2- Bonly:
g
1
dia. xg
3
deep
(for orientationpin fittedin
cover of main system relief
valves only)
Z
Z
SectionZ-Z
Dimensions mm (inches)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012124
• Minimum space required for slip-in valve (insert)
and its cover. Also minimum center line to center line
distance for two identical cavities in a manifold block
■ Dimensional tolerance is ± 0,2 (0.008).
ISO 7368 ref. and Eaton-Vickers Nominal Size
BA-06-2-A BB-08-2-A BC-09-2-A BD-10-2-A BE-11-2-A BF-12-2-A
BA-06-2-B BB-08-2-B BC-09-2-B BD-10-2-B BE-11-2-B BF-12-2-B
Dimension Size 16 Size 25 Size 32 Size 40 Size 50 Size 63
a 65 (2.56) 85 (3.35) 102 (4.02) 125 (4.92) 140 (5.51) 180 (7.09)
b ■ 75 (2.95) 95 (3.74) 112 (4.41) 135 (5.31) 150 (5.91) 190 (7.48)
d1dia. 32,039 (1.2614) 45,039 (1.7732) 60,046 (2.3640) 75,046 (2.9546) 90,054 (3.5454) 120,054 (4.7265)
32,000 (1.2598) 45,000 (1.7717) 60,000 (2.3622) 75,000 (2.9528) 90,000 (3.5433) 120,000 (4.7244)
d2 dia. 25,033 (0.9856) 34,039 (1.3401) 45,039 (1.7732) 55,046 (2.1672) 68,046 (2.6790) 90,054 (3.5454)
25,000 (0.9843) 34,000 (1.3386) 45,000 (1.7717) 55,000 (2.1654) 68,000 (2.6772) 90,000 (3.5433)
d3 dia. max. 16 (0.63) 25 (0.98) 32 (1.26) 40 (1.57) 50 (1.97) 63 (2.48)
d4 dia. 16 (0.63) 25 (0.98) 31,5 (1.24) 40 (1.57) 50 (1.97) 63 (2.48)
d5 dia. max. 4 (0.157) 6 (0.236) 8 (0.315) 10 (0.394) 10 (0.394) 12 (0.472)
d6 thread• M8 M12 M16 M20 M20 M30
g1 dia. nominal 4 (0.157) 6 (0.236) 6 (0.236) 6 (0.236) 8 (0.315) 8 (0.315)
g2 min. 8 (0.315) 8 (0.315) 8 (0.315) 8 (0.315) 8 (0.315) 8 (0.315)
g3 min. 4 (0.157) 6 (0.236) 6 (0.236) 6 (0.236) 8 (0.315) 8 (0.315)
t1 43,1 (1.697) 58,1 (2.287) 70,1 (2.760) 87,1 (3.429) 100,1 (3.941) 130,1 (5.122)
43,0 (1.693) 58,0 (2.283) 70,0 (2.756) 87,0 (3.425) 100,0 (3.937) 130,0 (5.118)
t2 2 (0.079) 2,5 (0.098) 2,5 (0.098) 3 (0.118) 3 (0.118) 4 (0.157)
t3 min. (XRa) 20 (0.79) 30 (1.18) 30 (1.18) 30 (1.18) 35 (1.38) 40 (1.57)
t4 2 (0.079) 2,5 (0.098) 2,5 (0.098) 3 (0.118) 4 (0.157) 4 (0.157)
t5 min. depth• 16 (0.63) 20 (0.79) 30 (1.18) 35 (1.38) 41 (1.61) 47 (1.85)
t6 max. 42,5 (1.67) 57 (2.24) 68,5 (2.70) 84,5 (3.33) 97,5 (3.84) 127 (5.00)
t7 min. (XRa) 54 (2.13) 70 (2.76) 83 (3.27) 102 (4.02) 117 (4.61) 150 (5.91)
t8 56,1 (2.209) 72,1 (2.839) 85,1 (3.350) 105,1 (4.138) 122,1 (4.807) 155,1 (6.106)
56,0 (2.205) 72,0 (2.835) 85,0 (3.346) 105,0 (4.134) 122,0 (4.803) 155,0 (6.102)
U 0,03 (0.0012) 0,03 (0.0012) 0,03 (0.0012) 0,05 (0.002) 0,05 (0.002) 0,05 (0.002)
W 0,05 (0.002) 0,05 (0.002) 0,1 (0.004) 0,1 (0.004) 0,1 (0.004) 0,2 (0.008)
x1 23 (0.906) 29 (1.142) 35 (1.378) 42,5 (1.673) 50 (1.969) 62,5 (2.461)
x2 2 (0.079) 4 (0.157) 6 (0.236) 7,5 (0.295) 8 (0.315) 12,5 (0.492)
x3 46 (1.811) 58 (2.283) 70 (2.756) 85 (3.346) 100 (3.937) 125 (4.921)
x 448 (1.89) 62 (2.441) 76 (2.992) 92,5 (3.642) 108 (4.252) 137,5 (5.413)
x5 12,5 (0.492) 13 (0.512) 18 (0.709) 19,5 (0.768) 20 (0.787) 24,5 (0.965)
y1 23 (0.906) 29 (1.142) 35 (1.38) 42,5 (1.673) 50 (1.969) 62,5 (2.461)
y2 2 (0.079) 4 (0.157) 6 (0.236) 7,5 (0.295) 8 (0.315) 12,5 (0.492)
y3 46 (1.811) 58 (2.283) 70 (2.756) 85 (3.346) 100 (3.937) 125 (4.921)
y4 48 (1.89) 62 (2.441) 76 (2.992) 92,5 (3.642) 108 (4.252) 137,5 (5.413)
y5 33,5 (1.319) 45 (1.772) 52 (2.047) 65,5 (2.579) 80 (3.150) 100,5 (3.957)
XRa 1,6 micron (63 microinches)
YRa 3,2 micron (125 microinches)
ZRa 0,8 micron (32 microinches)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 125
Ordering Procedure
Ask your Eaton-Vickers representative to present a quotation
for a cartridge valve system tailored to your application, or
to quote on the appropriate model numbers in this catalog.
System components must be ordered by complete model
numbers. Covers, inserts, pilot valves, modules, and mount-
ing bolt kits must be specified separately.
Typical Examples
Check Valve
A check valve function for 200 L/min (53 USgpm) as seen in
Figure 9, to metric standards, order:
– One (1) CVCS-16-N-B29-20 cover
– One (1) CVI-16-D16-M-50 insert
Relief Function
A proportional relief function for 450 L/min (119 USgpm) as
seen in Figure 27, to inch standards with size 03 interface,
and with a screw and locknut for up to 250 bar (3600 psi),
order:
– One (1) CVI-25-D10-H-50 insert
– One (1) CVCS-25-C3-W250-20 cover
– One (1) KCG-3-250-U-H1-10 pilot valve
– One (1) BKDPNG25-704 bolt kit (for cover)
– One (1) BKDG3-698 bolt kit (for pilot valve)
Unloading Function
An unloading valve for 700 L/min (185 USgpm) as seen in Fig-
ure 31, with wrench adjuster for a range up to 125 bar (1800
psi), to metric standards and no size 03 interface, order:
– One (1) CVCS-40-U-W125-20 cover
– One (1) CVI-40-U-50 insert
– One (1) DG4V-3(S)-2A-60 pilot valve
– One (1) BK616452M bolt kit (for pilot valve)
Reducer Function
A reducing valve for 500 L/min (132 USgpm) as seen in Figure
32, with micrometer adjuster for a range up to 350 bar (5000
psi), to inch standard and with size 03 interface for venting,
order:
– One (1) CVI-32-X2-50 insert
– One (1) CVCS-32-X3-M350-20 cover
– One (1) DG4V-3-2AL-60 pilot valve
– One (1) BKDNG32-713 bolt kit (for cover)
– One (1) BK590716 bolt kit (for pilot valve)
Dynamic Function
A dynamic valve for 200 L/min (53 USgpm) as seen in Figure
36, without stroke adjuster, to inch standard, order:
– One (1) CVI-16-ZD105-M-10 insert
– One (1) CVCS-16-ZD1-S2-10 cover
– One (1) DG4V-3-2A-60 pilot valve
– One (1) BKDNG16-712 bolt kit (for cover)
– One (1) BK590716 bolt kit (for pilot valve)
Proportional Flow Control
A proportional throttle valve for 700 L/min (185 USgpm) as
seen on page 89, order: (with extra standard seal kit)
– One (1) CVU-32-EFP1-B29-70-30
– One (1) BKDNG32-713
– One (1) 02-157615
Valvistor
The component parts of the Valvistor proportional throttle
assembly, including the pilot control valve, must be ordered
individually. In addition there is a choice of electronics: typi-
cally a Vickers Eurocard drive amplifier, alternatively a Vickers
12V DC or 24V DC proportional power plug. The full model
code must be specified in all cases.
Typical Valvistor Component Selection
1 x CVI-**-HFV-20-*-**-10 insert, see this catalog
1 x CVCS-**-HFV**-*2*-10 cover, see this catalog
1 x cover mounting bolt kit u, see this catalog
1 x KTG4V-3S- - - 60-EN427, see product catalog Slip-in
Cartridge.
1 x pilot valve mounting bolt kit, product catalog Valve
Catalog.
Plus:
Drive Electronics for 24V DC System
1 x EEA-PAM-523-A-32 Eurocard amplifier, see catalog 2464
or
1 x EHH-AMP-702-*-10 proportional power plug, see catalog
2115
Drive Electronics for 12V DC System
1 x EHH-AMP-712-*-10 proportional power plug, catalog 2282
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012126
Mass Summary, kg (lb)
Covers CVCS
Size
Model type 16 25 32 40 50 63
A 2.84 (6.27) 2.9 (6.40) 4.9 (10.81) 5.82 (12.84) 10.86 (23.96) 21.2 (49.78)
A3 3 (6.62) 3.2 (7.06) 6.9 (15.22) 6.20 (13.68) 14.22 (31.38) 24.9 (54.94)
B 0.86 (1.90) 1.37 (3.02) 2.24 (4.94) 4.00 (8.83) 6.20 (13.68) 10.94 (24.14)
C 2.8 (6.80) 2.9 (6.40) 3.85 (8.49) 6.23 (13.75) - -
C3 2.9 (6.40) 2.9 (6.40) 3.85 (8.49) 6.23 (13.75) - -
C025 1.49 (3.29) 2.22 (4.90) 3.7 (8.16) 5.62 (12.40) - -
D3 1.9 (4.19) 2 (4.41) 2.5 (5.52) 3.94 (8.69) 6.20 (13.68) 10.94 (24.14)
D2/D5 - - - - - -
DC3 1.96 (4.32) 2.47 (5.45) 3.39 (7.48) 5.10 (11.25) 6.25 (13.79) 10.94 (24.14)
HFV 1.2 (2.6) 1.9 (4.2) 3.3 (7.3) 6.3 (13.9) 9.6 (21.0) 19.4 (42.7)
N 0.86 (1.90) 1.37 (3.02) 2.24 (4.94) 4.00 (8.83) 6.20 (13.68) 10.94 (24.14)
OD - 2.16 (4.77) 3.52 (7.77) 5.36 (11.83) 7.30 (16.11) 14.77 (32.59)
OD3 - 2.42 (5.34) 4.1 (9.05) 6.30 (13.90) 8.90 (19.64) 15.65 (34.53)
PC 1.1 (2.43) 1.94 (4.28) 3.32 (7.33) 4.90 (10.81) 6.90 (15.22) 11 (24.27)
SC 2.8 (6.18) 2.9 (6.40) 3.85 (8.49) 6.23 (13.75) - -
SC3 2.9 (6.4) 2.9 (6.40) 3.85 (8.49) 6.23 (13.75) - -
U 2.8 (6.18) 2.9 (6.40) 3.85 (8.49) 6.23 (13.75) - -
U3 2.9 (6.40) 2.9 (6.40) 3.85 (8.49) 6.23 (13.75) - -
W 1.11 (2.45) 2 (4.41) 3.3 (7.28) 5.13 (11.32) 7.20 (15.89) 11.48 (25.33)
W13 1.96 (4.32) 2.47 (5.45) 4 (8.83) 6.25 (13.79) 8.00 (17.65) 12.75 (28.13)
W33 1.96 (4.32) 2.47 (5.45) 4 (8.83) 6.25 (13.79) 8.00 (17.65) 12.75 (28.13)
X 2.8 (6.18) 2.9 (6.40) 3.85 (8.49) 6.23 (13.75) - -
X3 2.9 (6.40) 2.9 (6.40) 3.85 (8.49) 6.23 (13.75) - -
ZD1 / ZD3 2.7 (5.96) 4.7 (10.37) 6.7 (14.78) 11.50 (25.37) 15.30 (33.76) 28 (61.78)
ZDA1/ZDA3 2.9 (6.40) 5 (11.03) 7.1 (15.67) 11.80 (26.04) 16.10 (35.52) 29 (63.99)
Inserts CVI
Size
Model Type 16 25 32 40 50 63
ZD(N)105 0.35 (0.77) 0.84 (1.85) 1.72 (3.79) 3.44 (7.58) 5.83 (12.85) 12.7 (28.0)
All other models 0.15 (0.33) 0.38 (0.84) 1.03 (2.27) 1.55 (3.42) 2.53 (5.58) 6.23 (13.75)
HFV 0.13 (0.29) 0.33 (0.73) 0.9 (1.98) 1.35 (3.0) 2.2 (4.8) 5.4 (11.9)
Pilot Control Module (CVG***)
Model Type Description
CVGC-3 Relief module: P-T 1,3 (2.9)
CVGCA-3 Relief module: A-T 1,3 (2.9)
CVGCPA-3 Relief module: P & A-T 1,3 (2.9)
CVGMS1-3 Shuttle module: P-T 1,0 (2.2)
CVGPC1-3 Pilot operated check valve 1,0 (2.2)
CVGS1-3 Shuttle valve 1,0 (2.2)
EATON Slip-in Cartridge Valve Catalog E-VLSC-MC002-E March 2012 127
Pilot Valves
Modeltype “U”coils “F” coils+conduit box
DG4V-3 and DG4V-3S
DC coil(s) :
Singlesolenoidvalve
Doublesolenoidvalve
AC coil(s) :
Singlesolenoidvalve
Doublesolenoidvalve
1,6(3.5)
2,2(4.8)
1,5(3.3)
1,8(4.0)
1,8(4.0)
2,3(5.0)
1,6(3.5)
2,0(4.4)
DG4V-5
DC coil(s) :
Singlesolenoidvalve
Doublesolenoidvalve
AC coil(s):
Singlesolenoidvalve
Doublesolenoidvalve
4,8(10.6)
6,3(13.9)
4,0(8.8)
4,5(9.9)
DG4S4-01-5*
DC coil(s):
Singlesolenoidvalve
Doublesolenoidvalve
AC coil(s):
Singlesolenoidvalve
Doublesolenoidvalve
4,1(9)
4,7(10.3)
4,1(9)
4,7(10.3)
DG4S4W-01-6*
DC coil(s):
Singlesolenoidvalve
Doublesolenoidvalve
AC coil(s):
Singlesolenoidvalve
Doublesolenoidvalve
4,8(10.6)
6,3(13.9)
4,0(8.8)
4,5(9.9)
Proportional pilot valves
KCG-3
EHST-3 2,6(4.8)
1,7(3.8)
--
1,9(4.2)
--
Weight of completecartridge assemblyis obtained by summing theseparate values forcartridge parts and coverassembly.
Units
CVU-EFP1:See page89
CVU-63-OD11: Contact your Eaton-Vickers
representative
CVU-(Z)SWD(3): See page 94
Service/SparesPolicy
Inserts
All Eaton-Vickers inserts are field
serviceable when serviced by Eaton-Vickers
approved personnel. Springs, seals, spools
and poppets are available, as defined in
Eaton-Vickers Service and Spares literature.
Covers
Allcoversare field serviceable providing
that correct parts and test facilities are
available. Contact your Eaton-Vickers representative
forfurther details.
Units
See individual service and repair
policies, availablefromyour Eaton-Vickers
representative.
Pilot Valves
Model type “U” coils
DG4V-3
DC coil(s):
Single solenoid valve 1, 6 (3.5)
Double solenoid valve 2, 2 (4.8)
AC coil(s):
Single solenoid valve 1, 5 (3.3)
Double solenoid valve 1, 8 (4.0)
Proportional pilot valves
KCG-3 1, 7 (3.8)
Weight of complete cartridge assembly is obtained by summing the separate values for
cartridge parts and cover assembly.
© 2011 Eaton Corporation
All Rights Reserved
Printed in USA
Document No. E-VLSC-MC002-E
March 2012
Eaton
Hydraulics Group USA
14615 Lone Oak Road
Eden Prairie, MN 55344
USA
Tel: 952-937-9800
Fax: 952-294-7722
www.eaton.com/hydraulics
Eaton
Hydraulics Group Europe
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Switzerland
Tel: +41 (0) 21 811 4600
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