EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015E-2
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Eaton directional valves offer
versatility of application for
the many directional control
requirements of hydraulic
machinery. Ruggedness
of design, manufacturing
quality, and worldwide
parts and service availability
maximize uptime, resulting
in greater profits for your
company.
Manual Lever/Cam/Plunger
Valves
These valves are available
in an NFPA D03 interface.
These valves are rated at
flows to 75 l/min (20 USgpm)
and 350 bar (5000 psi)
maximum pressure. Roller
cam, plunger, spring offset,
detented, spring centered,
knob or lever operated
models are available.
Air Operated
Available in an NFPA D03
interface with rated flows
to 75 l/min (20 USgpm) and
maximum pressure of 350
bar (5000 psi).
Hydraulic Pilot Operated
Available in an NFPA D03
interface. Valves are rated at
flows to 151 l/min
(40 USgpm) and maximum
pressure of 350 bar
(5000 psi)
Feature and Benefits
• High pressure and flow
capability for maximum
cost–effectiveness
• Low head loss to minimize
power loss
• Low–shock characteristics
to maximize machine life
• Choice of five types
of control to satisfy
applications where
electrical control is not
appropriate
Manual Lever/Cam/Plunger Operated Directional Valve
DG3/17/18/20/21-3 60 Design
DG3V–3–*–60
Hydraulic Operator
DG18V–3–*–60
Air Operator
DG17V–3–* – 60
Lever Operator
DG21V–3–* – 60
Plunger Operator
DG20V–3–* – 60
Cam Operator
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015 E-3
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General Information
General Description
Five types of valve are
available with different
controls primarily for
controlling the starting,
stopping and direction of fluid
flow in a system.
The valves are developed
from the well-known series
of DG4V-3-60 series solenoid
operated valves (see Eaton
literature # GB-C-2015).
These manual valves are
available with a choice of
up to nine different spool
types, depending on valve
configuration. All spools
have been designed to
provide good low-shock
characteristics. External
regulation of the control
input by hydraulic, lever,
pneumatic, cam or plunger
operation allows matching
to virtually any requirement
where electrical control is not
appropriate.
Models include no-spring,
spring offset, spring centered
and detented versions.
DG3V-3-*-60 Hydraulic
Operated
The hydraulic operated DG3V-
3-*-60 directional valves are
used to control the direction
of flow in a hydraulic circuit,
which would control the
movement of a work cylinder
or the rotation of a fluid
motor.
DG**V-3-*-60 Lever/Cam/
Plunger Operated
Operating Information
The DG21V-3 plunger
operator valves are internally
drained to port T. They may
be used only when surges
or back pressure in the tank
line cannot overcome the
force applied to depress the
plunger.
DG17/20/21 models must
be released from actuated
positions, without restriction
to ensure proper spring
return.
Manual lever and cam
operations must be released
from their actuated positions,
without any restrictions to
spring return.
Cam operated directional
control valve installation
recommendations:
• Maximum cam angle 35°
• Cam travel for dead band
of 9° 30’ on either side of
center for closed center
spools for 35° cam.
• This dead band should be
taken into consideration
when designing cam and
system circuits.
• Cam should not drive roller
at its vertical centerline to
avoid any side loading on
roller lever mechanism.
Actuation Force
Under rated conditions*, the
approximate actuation force
will be as shown in the chart
below:
*Tank return must be designed so
that transient tank line pressure
peake do not exceed 6,9 bar (100
psi). For tank return line pressure
in excess of 6,9 bar (100 psi) lever
movement must be assisted.
Note:
In right hand assembly, operator
“A” is always removed. In left
hand assembly, operator “B” is
always removed. Please note
that European designations are
the opposite. See diagram on the
nameplate of the valve for operator
(port) identification.
DG18V-3-**-60 Air
Operated
Eaton air operated
DG18V-3-**-60 directional
control valves come in four
basic versions: 3 position
spring centered; 2 position
detent; 2 position spring
offset to port A, B operator;
2 position spring offset to port
B, A operator.
Note:
Manual actuator in end cap feature
(P2) available on single operator
models only. In right hand assembly,
operator “A” is always removed. In
left hand assembly, operator “B” is
always removed. See identification
plate on top of valve for operator
(port) identification.
For every 3,3 bar (50 psi)
increase in tank line pressure
the air pilot pressure must
be increased 0.07 bar (1 psi).
Maximum tank line pressure
is 100 bar (1450 psi).
Nameplate identification label
is asymmetrical and fixes
the “A” and “B” operators
in relation to the “P” port.
Designers should note for
installation on vertical panels.
On all right hand models,
when operator “A” is
pressurized, flow is always P
to A. When operator “B” is
pressurized, flow is always
P to B. Operators “A” and
“B” are identified on the
identification plate on top
of the valve. For left hand
assembly this is reversed
(P to B when the “A”
operator is pressurized).
Shift Time
Shift time is essentially
dependent upon pilot
pressure, line length and
diameter, and speed of
control mechanism. Spring
return time from the
offset to center position
is approximately 45 msec.
at rated flow and pressure
assuming minimal back
pressure in the pilot line.
Shifting Action
Spring centered and spring
offset types will be spring
positioned unless sufficient
pilot pressure is maintained
at pilot port to shift and hold
the valve spool. No-spring
(offered as pilot valves for
no-spring detented models
only) require only momentary
pressurization of pilot port
to shift spool (approx. 0.1
seconds).
When pilot pressure is
relieved, spool will remain in
last position attained provided
there is no severe shock,
vibration or unusual pressure
transients.
Note:
Surges of oil in a common tank line
serving these and other valves can
be of sufficient magnitude to cause
inadvertent shifting of these valves.
This is particularly critical in the
no-spring and no-spring detented
type valves. Separate tank lines or a
vented manifold with a continuous
downward path to tank is preferred.
Any sliding spool, if held
shifted under pressure for
long periods of time, may
stick and not spring return
due to fluid residue formation
(silting) and therefore, should
be cycled periodically to
prevent this from happening.
If this valve is used for
purposes other than a 4-way
valve or as shown in the
graphical symbol on the valve,
consult your distributor or
sales engineer.
Mounting Position
There is no restriction on
mounting of spring centered
or spring offset models.
Detented models must be
mounted with the spool
bore horizontal to reduce the
possibility of accidental spool
shift due to shock and/or
vibration.
Port Connections
Port connections are made
by mounting the valve on a
manifold or subplate having
mounting dimensions which
conform to NFPA–D03
(ISO-4401-03) configurations.
Valve type Force Nm (lbf.)*
DG17V-3-*A 22 - 31 (5 to 7)
DG17V-3-*C 13 - 22 (3 to 5)
DG17V-3-*N 22 - 31 (5 to 7)
DG17V-3-*A 53 - 62 (12 to 14)
DG17V-3-*C 45 - 53 (10 to 12)
DG17V-3-*A 100- 250 (22 to 56)
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015E-4
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Valve Type
* – Operator
17 – Lever operated
20 – Roller cam
operated
21 – Plunger operater
V – 350 bar (5000 psi) on
P, A & B ports
3 – ISO 4401-03 (CETOP
3,NFPA D03) ISO
4401-AB-03-4-B
Spool Type
Refer page 7 for spool type
Spool Spring
Arrangement
A – Spring offset, end-to-
end
AL – Same as “A” but left
hand build
B – Spring offset, end to
center
BL – Same as “B” but left
hand build
C – Spring centered
N – No-spring detent
Tank Port Rating
Omit if not required
2 – 10 bar max for DG21V
only
Design
Installation dimensions
remain as shown for design
numbers 60 thru 69.
Valve Type
3 – Hydraulically operated
V – 350 bar (5000 psi) on
P, A & B ports
3 – ISO 4401-03 (CETOP
3,NFPA D03) ISO
4401-AB-03-4-B
Spool Type
Refer page 6 for spool type
Spool Spring
Arrangement
A – Spring offset, end-to-
end
AL – Same as “A” but left
hand build
B – Spring offset, end to
center
BL – Same as “B” but left
hand build
C – Spring centered
N – No-spring detent
Internal Drain
(omit if not required)
A, B & F models only for
designs (F models must
have internal drain)
T – Internal drain
Manual Override
Option
A, B & F models in
non-operator end
P1 – Manual override
Tank Pressure Limit
7 – 210 bar (3000 psi)
Thread for Pilot/Drain
Connection
P – G
1
⁄8”
NPT threads
B – SAE internal straight
threads
Design
Installation dimensions
remain as shown for design
numbers 60 thru 69.
Model Code
3
3
2
2
5
5
D G 3 V - 3 ** * (*) - (*) - (*) - * - * - 60
2 4 53 86 71
1
D G ** V - 3 - * * (*) * - 60
52
3
4
1
1
4
4
7
8
6
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015 E-5
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Model Code
Valve Type
18 – Air Operated
V – 350 bar (5000 psi) on
P, A & B ports
3 – ISO 4401-03 (CETOP
3,NFPA D03) ISO
4401-AB-03-4-B
Spool Type (center
condition)
Refer page 8 for spool type
Spool Spring
Arrangement
A – Spring offset to A,
(single operator)
AL – Spring offset to B, L.H.
build (single operator)
B – Spring centered,
operator A removed
(single operator)
BL – Spring centered,
operator B removed
(single operator)
C – Spring centered (dual
operator)
F – Spring offset, shift to
center (single operator)
FL – Spring offset, shift
to center, L.H. build
(single operator)
N – No-spring detented
Manual Override
Option
(Applicable for A(L), B(L) &
F(L) models only)
Blank – Overrides in
operator end only
P2 – Override in both ends of
single operators
Actuator Identity
Blank – Standard
arrangement (i.e.
apply air to operator
A to give flow P to
A) (Ref. US ANSI
B93.9)
V – Operator identification
determined by position
of operator (i.e. operator
A at A port end of valve
operator B at B port end
of valve)
Note: Type 8 spool conforms to
both methods. All type 8 spools
must designate V in model code.
Pilot Source Thread
Connections
P –
1
⁄8”
NPT threads
B –
1
⁄8”
BSP threads
Design
Installation dimensions
remain as shown for design
numbers 60 thru 69.
D G 18 V - 3 -
* *
(
*
) - (
**
) - (
*
) -
*
- 60
4 72 3 5 61
1
3
4
6
7
5
2
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015E-6
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Spool Options Model Basic Valve Symbol Usable Spool Options
DG3V-3-** 0, 2, 6 & 22
DG3V-3-**A 0, 2, 6 & 22
DG3V-3-**A-T 0, 2, 6
DG3V-3-**B 0, 2, 3, 6 & 33
DG3V-3-**B-T 0, 2, 3, 6 & 33
DG3V-3-**C 0, 2, 3, 6 & 33
DG3V-3-**F-T 0, 2, 3, 6 & 33
DG3V-3-**N 0, 2, 6
Functional Symbols
Spool Options for DG3V-3-60
Single operator models marked are optionally available with a manual override in the non-operator end only.
Models with operators at both ends are not available with manual overrides.
Full flow
Restricted flow
NOTE:
a) Pilot pressure must always exceed drain line pressure or, for internally drained valves, the T-line pressure by at least the requisite minimum
pilot pressure. Open-center spools (0, 1 and 8) should be used only in externally drained valves.
b) Internally drained valves may be used only when surges in the tank line cannot possibly overcome the minimum pilot pressure differential
referred to above. When the possibility of pressure surges in the tank line exist externally drained valves are recommended.
R.H. build only
R.H. build only
A B
P T
A B
P T
A B
P T
1 2 3
A B
P T
A B
P
T
ba
o
b a
b a
b a
b a
b a
b a
A B
P T
A B
P
T
ob a
A B
P
T
ob a
0
2
3
6
22
33
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015 E-7
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AB
PT
bao
b a
b a
b a
oba
abo
AB
PT
AB
PT
AB
PT
oab
AB
PT
oba
AB
PT
AB
PT
b a
AB
PT
ba
0
2
6
7
22
33
8
Functional Symbols
Spool Options for DG17/20/21V-3-60
Spool Options Model Basic Valve Symbol Usable Spool Options
DG17V-3-**A 0, 2, 6, & 22
DG20V-3-**A 0, 2, 6, & 22
DG20V-3-**A2 0, 2, 6 & 33
DG20V-3-**A2L 0, 2, 6 & 33
DG17V-3-**C 0, 2, 6, 7 & 33
DG20V-3-**C 0, 2, 6, & 33
DG17V-3-**8C 8
DG17V-3-**N 0, 2, 6, 7 & 33
DG21V-3-2A 2
DG21V-3-2AL 2
Full flow
Restricted flow
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015E-8
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Spool Options Model Basic Valve Symbol Usable Spool Options
DG18V-3-**A 0, 2, 6, 7 & 22
DG18V-3-**B 0, 1, 2, 3, 6, 7 & 33
DG18V-3-**8B 8
DG18V-3-**C 0, 1, 2, 3, 6 & 33
DG18V-3-**8C 8
DG18V-3-**F 0, 1, 2, 3, 6, 7 & 33
DG18V-3-**N 0, 2, 6
AB
PT
ba
oba
AB
PT
b o
AB
PT
a o
AB
PT
oab
AB
PT
AB
PT
o a
ab
AB
PT
bao
abo
0
1
2
3
6
7
22
33
8
Single operator models marked are optionally available with a manual override in the non-operator end only.
Models with operators at both ends are not available with manual overrides.
Full flow
Restricted flow
NOTE:
a) Pilot pressure must always exceed drain line pressure or, for internally drained valves, the T-line pressure by at least the requisite minimum pilot pressure.
Open-center spools (0, 1 and 8) should be used only in externally drained valves.
b) Internally drained valves may be used only when surges in the tank line cannot possibly overcome the minimum pilot pressure differential referred to above.
When the possibility of pressure surges in the tank line exist externally drained valves are recommended.
Functional Symbols
Spool Options for DG18V-3-*-60
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Operating Data
DG3V-3-*-60 Hydraulic Operator
Maximum flow: See chart on page 9.
Maximum operating pressure: 350 bar (5000 psi)
Maximum tank line pressure: 210 bar (3000 psi)
Minimum pilot pressure: See chart on page 9.
Recommended fluid viscosity range: 13-54 cSt
Weight: 1,2 kg (2.5 lbs.)
Operating Data
Control (swept) volume(s):
DG3V-3**A(L) models, end-to-end: 0,8 cm
3
(0.050 in
3
)
DG3V3-**B(L)/F(L) models:
center-to-end 0,4 cm
3
(0.025 in
3
)
DG3V-3-**C/N models:
center-to-end 0,4 cm
3
(0.025 in
3
)
end-to-end 0,8 cm
3
(0.050 in
3
)
DG3V-3-**(N) no-spring and detented valves require only momentary pilot pressurization to shift spool (in approx. 0.1 seconds). All other models require pilot pressure to be maintained to shift and
hold the spool.
DG17/20/21-3-**-60 Lever/Cam/Plunger Operator
Maximum flow: 75 I/min (20 USgpm)
Maximum operating pressure: (A, B & P ports) 350 bar (5000 psi)
Maximum tank line operating pressure: 6,9 bar (100 psi)
Minimum pilot pressure: 100 bar (1450 psi)
10 bar (145 psi) DG21 model only
Recommended viscosity range 14 - 86 cSt (75 - 400 SUS)
@ 18°C to 66°C (0°F to 150°F
Weights:
DG17V Lever operated 1,8 kg (4.0 Ibs)
DG20V Cam operated 1,2 kg (2.5 Ibs)
DG21V Plunger operated 1,2 kg (2.5 Ibs)
DG18V-3-*-60 Air Operator
Maximum flow: 75 I/min (20 USgpm)
Maximum operating pressure: (A, B & P ports) 350 bar (5000 psi)
Maximum tank line operating pressure*: 100 bar (1450 psi)
Maximum air pilot pressure: 10 bar (150 psi)
Minimum air pilot pressure: 1,7 bar (25 psi)
Operating temperature range: -18
0
C to 66
0
C (0
0
F to 150
0
F)
Mounting interface: ISO 4401-03, CETOP 3 (NFPA D03)
Recommended viscosity range: 14 - 86 cSt (75 - 400 SUS)
Weights:
Dual operator models 1,5 kg (3.4 Ibs.)
Single operator models 1,2 kg (2.7Ibs.)
* For every 3,3 bar (50 psi) increase in tank line pressure, the air pilot pressure must be increased 0,07 bar (1 psi).
Operating Data
Control (swept) volume(s):
DG18V-3"A(L) end-to-end 3,6 cm
3
(0.219 in
3
)
DG 18V3"'B(L)/F(L) center -to-end 1,8 cm
3
(0.109 in
3
)
DG3V-3"'C/N center-to-end 1,8 cm
3
(0.109 in
3
)
end-to-end 3,6 cm
3
(0.219 in
3
)
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015E-10
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Performance Data
DG3V-3-*A(L)
Pilot Pressure Requirements
The spools require the minimum pilot
pressures shown in the graph below to
overcome the spring force and any flow
forces. Some spools are limited by the
ability to spring return the valve.
Minimum pilot pressure required at a
flow rate of 20 l/min (5.5 USgpm):
Maximum Flow Rates
Some spools are limited in the
conditions they will operate without
reliability problems. These are the
single ended spools which must
operate within limits outlined in the
graph below.
Pressure Drop Characteristics
The pressure drop curves give
approximate pressure drop ΔP when
passing 21 cSt (100 SUS) fluid(s) having
.87 specific gravity.
For any other viscosity the pressure
drop
ΔP will change as follows:
For any other specific gravity (G
1
)* the
pressure drop P will be approximately:
ΔP
1
= ΔP(G
1
/G)
* Specific gravity of fluid may be obtained from its producer.
Fire-resistant fluids have higher specific ravities than oil.
Spool/Spring Curve
0A(L) 1
2A(L) 2
6A(L) 3
22A(L) 4
Spool/Spring Curve
0A(L) 1
0C 3
0F(L) 3
2A(L) 1
2C 1
2F(L) 4
6A(L) 1
6C 1
6F(L) 4
22A 5
33C 2
9
4
0
3
2
4
5
6
7
100 200 300
1
2
3
Pilot pressure – bar
350
40
20
Pilot pressure – psi
1000
Pressure at port P - psi
Pressure at port P - bar
60
80
100
2000 3000 4000 5000
5
24 6
Pressure at P port - bar
Flow rate – l/min
8
010203040
100
200
300
1450
2900
4350
Flow rate – USgpm
Pressure at P port - psi
10
Pressure Drop - bar
Pressure Drop - psi
12
10
8
6
4
0
2
40
80
120
160
Flow rate - l/min
Flow rate - USgpm
10 20 30 40 50 60 70
30
80
3 6 9 12 15 18 21
3
1
2
4
5
6
7
Spool malfunction limits
Pressure Drop Curves
Max flow l/min (USgpm)
Spool/Spring P to A A to T P to B A to T P to T @ 350 bar (5000 psi)
0 4 2 4 2 4 38 (10)
0A 5 2 5 2 4
0B, 0C, 0F 4 2 4 2 4 38 (10)
0N 3 7 3 7 4 38 (10)
2 5 2 5 2 – 38 (10)
2A 6 5 6 5 –
2B, 2C, 2F 5 2 5 2 – 38 (10)
2N 6 3 6 3 – 38 (10)
3B, 3C, 3F 6 3 6 1 – 38 (10)
6 6 1 6 1 – 38 (10)
6A 5 7 5 7 –
6B, 6C, 6F 6 1 6 1 – 38 (10)
6N 7 1 7 1 – 38 (10)
22A 6 – 6 – –
33B, 33C, 33F 5 2 5 2 38 (10)
Type “33” spool at center will pass approx. 20 l/min (5.3 USgpm) at 124 bar Transient condition.
(1800 psi) pressure drop from port A or B (the other being plugged) to T. See graph above, Max. Flow Rates.
NOTE: For spool types 3 and 6; not recommended
for flows in excess of 60 l/min (15.8 USgpm).
Viscosity
cSt 14 32 43 54 65 76 86
(SUS) (75) (150) (200) (250) (300) (350) (400)
% of ΔP 93 111 119 126 132 137 141
(Approx.)
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Performance Data
DG17V-3
**Note type "33" spool at center will pass approximately 20 I/min. (5.3 USgpm)
at 124 bar (1798 psi) inlet pressure.
DG17V-3-**-60 Pressure drop curve reference chart
Spool Type P A B T P B A T P T Maximum flow @ 350 bar
@CENTER (5000 psi)
"0C" 4 2 4 2 4
"2C" 5 2 5 2 —
"6C" 6 1 6 1 —
"7C" 4 3 4 3 — 75 l/min
(20 USgpm)
"33C" 5 2 5 2 **
"0A" 5 2 5 2 —
"2A" 6 5 6 5 —
"6A" 5 7 5 7 —
"22A" 6 — 6 — — 55 l/min
(15 USgpm)
"0N" 4 2 4 2 4
75 l/min
(20 USgpm)
"2N" 5 2 5 2 —
"6N" 6 1 6 1 — 55 l/min
(15 USgpm)
"7N" 4 3 4 3 —
38 l/min
(10 USgpm)
"33N" 5 2 5 2 **
R.H.
L.H.
The pressure drop curves give approximate pressure drop ΔP
when passing 36 cSt (100 SUS) fluid(s) having .87 specific gravity.
For any other viscosity the pressure drop
ΔP will change as
follows:
For any other specific gravity (G
1
)* the pressure drop ΔP will be
approximately: ΔP
1
= ΔP (G
1
/ G)
* Specific gravity of fluid may be obtained from its producer.
Viscosity
cSt 14 32 43 54 65 76 86
(SUS) (75) (150) (200) (250) (300) (350) (400)
% of ΔP 93 111 119 126 132 137 141
(Approx.)
0 10 20 30 40 50 60
2 4 6 8 10 12 14
Flow – USgpm
Pressure drop – psi
Pressure drop – bar
Flow – l/min
12
10
8
6
4
2
0
150
125
100
75
50
25
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015E-12
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Performance Data
DG20/21V-3
DG20/21V-3-**-60 Pressure drop curve – reference chart
Spool Type P A B T P B A T P T Maximum flow @ 350 bar
@CENTER (5000 psi)
"0C" 2 2 2 2 2
"2C" 2 3 2 3 — 75 l/min
(20 USgpm)
"6C" 3 1 3 1 —
"33C" 2 2 2 2 **
"0A" 2 2 2 2 — 38 l/min
(10 USgpm)
"2A" 2 3 2 3 —
"33A" 2 2 2 2 —
"6A" 3 1 3 1 — 19 l/min
(5 USgpm)
**Note type “33” spool at center will pass approximately 20 l/min. (5.3 USgpm) at 124 bar (1798 psi) inlet pressure.
The pressure drop curves give approximate pressure drop ΔP
when passing 36 cSt (100 SUS) fluid(s) having .87 specific
gravity.
For any other viscosity the pressure drop
ΔP will change as
follows:
For any other specific gravity (G
1
)* the pressure drop ΔP will be
approximately:
ΔP
1
= ΔP (G
1
/ G)
* Specific gravity of fluid may be obtained from its producer.
2 4 6 8 10 12 14
0 10 20 30 40 50 60
150
125
100
75
50
25
Pressure drop – psi
Pressure drop – bar
Flow – USgpm
Flow – l/min
12
10
8
6
4
2
0
Viscosity
cSt 14 32 43 54 65 76 86
(SUS) (75) (150) (200) (250) (300) (350) (400)
% of ΔP 93 111 119 126 132 137 141
(Approx.)
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Performance Data
DG18V-3
DG 1SV-3-**-60 Maximum flow without malfunction @350 bar (5000 psi) in I/min (USgpm)
Valve type "0" "1" "2" "3" "6" "7" "8" "33"
"22A" — — 15 — — — — —
(4)
"*A" 57 — 57 — 30 26 — —
(15) (15) (8) (7)
"*B" 76 19 57 76* 26 57 38 57*
(20) (5) (15) (20) (7) (15) (10) (15)
"*C" 76 19 57 76* 26 57 38 57*
(20) (5) (15) (20) (7) (15) (10) (15)
"*F" 76 19 57 76* 26 57 — 57*
(20) (5) (15) (20) (7) (15) (15)
"*N" 53 76 45 — — — — —
(14) (20) (12)
* 2 bar (30 psi) air pilot pressure required
** NOTE: Type "33" spool at center, will approximately pass 20 I/min.
(5.3 USgpm) at 124 bar (1798 psi) inlet pressure.
The pressure drop curves give approximate pressure drop ΔP
when passing 36 cSt (100 SUS) fluid(s) having a specific gravity.
of .87.
For any other viscosity the pressure drop
ΔP will change as
follows:
For any other specific gravity (G
1
)* the pressure drop ΔP will be
approximately:
ΔP
1
= ΔP (G
1
/ G)
* Specific gravity of fluid may be obtained from its producer.
Viscosity
cSt 14 32 43 54 65 76 86
(SUS) (75) (150) (200) (250) (300) (350) (400)
% of ΔP 93 111 119 126 132 137 141
(Approx.)
Pressure drop curve reference chart
Spool type P-A B- T P- B A-T P_T
@Center
"0B"
"0C" 4 2 4 2 4
"0F"
"1B"
"1C" 5 3 5 3 6
"1F"
"2B"
"2C" 5 2 5 2 —
"2F"
"3B"
"3C" 6 3 6 1 —
"3F"
"6B"
"6C" 6 1 6 1 —
"6F"
"7B"
"7C" 4 3 4 3 —
"7F"
"8B"
"8C" 6 4 6 4 8
"33B"
"33C" 5 2 5 2 **
"33F"
"0A" 5 2 5 2 —
"2A" 6 5 6 5 —
"6A" 5 7 5 7 —
"7A" 6 7 6 7 —
"22A" 6 — 6 — —
"0N" 3 7 3 7 —
"2N" 6 3 6 3 —
"6N" 7 1 7 1 —
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015E-14
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Installation Dimensions
DG3V-3-*-60
124,0
(4.88)
74,0
(2.91)
25,0
(0.98)
Both
ends
21,8
(0.86)
25,0
(0.98)
48,0 (1.88)
24,0 (0.94)
51,0 (2.01)
9,0
(0.35)
108,0
(4.25)
DG3V-3-**A –T–7–*–60
DG3V-3-**B –T–7–*–60
DG3V-3-**F –T–7–*–60
Location pin
“P ” Port
“A ” Port
128,0 (5.04)
25,0 (0.98)
29,0
(1.14)
DG3V-3-**A –T–P1–7–*– 60
DG3V-3-**B –T–P1–7–*– 60
DG3V-3-**F –T–P1–7–*– 60
DG3V-3-**(L)
DG3V-3-**A(L)
DG3V-3-**B(L)
DG3V-3-**C
DG3V-3-**N – 7 – * – 60
– 7 – * – 60
– 7 – * – 60
– 7 – * – 60
– 7 – * – 60
“B” Port
“T” Port
40,5 (1.59)
57,2 (2.25)
30,0 (1.18) A/F
across flats
Pilot/drain connection
B– G
1
/
8
thread
S– SAE straight thread
(
7
/
16
” - 20 UNF)
Manual override
AB
ABAB
DG3V-3-*-60 Hydraulic Operated
Millimeters (inches)
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015 E-15
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Installation Dimensions
DG17V-3-*-60
38,0
(1.50)
Ø 31,8
Ø (1.25)
110,8
(4.36)
40,6
(1.60)
46,0
(1.81)
23,0
(.91)
92,2
(3.63)
Position #2
Position #3
Position #1
46,0
(1.81)
23,0
(.91)
151.3
(5.96)
3,1
(.12)
Ø 3,0
Ø (.12)
5,45 (.215)
5,30 (.209)
50,0
(1.97)
21,8
(.86)
Ø 5,3 (.21) thru, c’bored
Ø 9 (.35) to depth shown, 4 holes
Ø
DG17V-3-*-60 Lever Operated
Millimeters (inches)
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015E-16
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DG20V-3-*-60 Cam Operated
Millimeters (inches)
Roller can be relocated
to any desired position
Roller can
be inverted
117,0
(4.60)
Position #3
Position #2
Position #1
91,2
(3.59)
65,1
(2.56)
24,0
(.94)
37,0
(1.46)
50,0
(1.97)
21,8
(.86)
38,3
(1.51)
19,0
(.75)
69,6
(2.74)
31,5
27,3
(1.07)
3,02
(.119)
Ø
5,6
(.22)
13,0
(.51)
20
0
20
0
2,3
(.09)
Ø
Ø
Ø
Ø
(1.24)
3,1
(.12)
5,45 (.215)
5,30 (.209)
5,3 (.21) thru, c’bored
9 (.35) to depth shown, 4 holes
Installation Dimensions
DG20V-3-*-60
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015 E-17
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Nom.
stroke
Max.
stroke
57,2 (2.25)
56,1 (2.21)
57,2 (2.25)
56,1 (2.21)
50,0
(1.97)
21,8
(.86)
24,5
(.96)
3,1
(.12)
3,02
(.119)
46
(1.81)
Operating force, is dependent on hydraulic
conditions and from 100-250 Nm (22-56 lb ft),
must be applied axially.
40,5
(1.59)
17
(.67)
74
(2.91)
3,5
(.14)
3,7
(.15)
AB
5,3 (.21) thru, c’bored
9 (.35) to depth shown, 4 holes
Ø
Ø
Ø
DG21V-3-A(L)-2-60 Plunger Operated
Millimeters (inches)
Installation Dimensions
DG21V-3-A(L)-2-60
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015E-18
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DG18V-3-*-60 Air Operated
Millimeters (inches)
Installation Dimensions
DG18V-3-*-60
Air pilot conn. for
“P” models ” NPT
Air pilot conn. for
“B” models ” BSP
Air pilot connections may be rotated
90
0
each side of center.
Manual
actuator
DG18V-3-**-P2-*-60
Manual
actuator
Vent hole
Do not block
3.10
(.122)
137,5
(5.41)
146,5
(5.77)
105,8
(4.17)
57,2
(2.25)
98,8
(3.89)
120,8
(4.75)
27,9
(1.10)
square
44,50
(1.752)
21,8
(.86)
48.0
(1.81)
23,0
(.91)
49,8
(1.96)
24,5
(.96)
Ø 3,02
(Ø .119)
Cover mounting
screw torque
3.5 - 4.0 N.m
(30 - 36 lbf.in.)
Operator “B”
(For “V” models
operator “A”)
5,45 (.215)
5,30 (.209)
Ø
p
A P B
1
/
8
1
/
8
EATON DG3/17/20/21/18V-3-10 Design E-VLVI-SS001-E1 October 2015 E-19
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DG18V-3-*-60 Air Operated
Millimeters (inches)
Installation Dimensions
DG18V-3-*-60
Operator “B”
(For “V” models operator “A ”)
120,8
(4.75)
98,8
(3.89)
57,2
(2.25)
105,8
(4.17)
58,4
(2.30)
Air pilot conn. for
“B” models
1
/
8
” BSP
Operator “A ”
(For“V” models
operator “B”)
Cover mounting screw torque
Air pilot connections may
be rotated 90
0
each side
of center.
3.5 – 4.0 N.m. (30 – 36 lbf. in.)
Vent hole
Do not block
Manual
actuator
3.10
Ø 3,02
(Ø.119)
(.122)
46.0
(1.81)
23,0
(.91)
24,5
(.96)
49,8
(1.96)
44,50
(1.752)
137,5
(5.41)
21,8
(.86)
Manual
actuator
201,0
(7.91)
65,4
(2.57)
Air pilot conn. for
“P ” models
1
/
8
” NPT
5,45 (.215)
Ø
5,30 (.209)
E
© 2015 Eaton
All Rights Reserved
Printed in USA
Document No.: E-VLVI-SS001-E1
October 2015
Eaton
Hydraulics Business USA
14615 Lone Oak Road
Eden Prairie, MN 55344
USA
Tel: 952-937-9800
Fax: 952-294-7722
www.eaton.com/hydraulics
Eaton
Hydraulics Business Europe
Route de la Longeraie 7
1110 Morges
Switzerland
Tel: +41 (0) 21 811 4600
Fax: +41 (0) 21 811 4601
Eaton
Hydraulics Group Asia Pacific
Eaton Building
4
th
Floor, No. 3 Lane 280 Linhong Rd.
Changning District
Shanghai 200335
China
Tel: (+86 21) 5200 0099
Fax: (+86 21) 5200 0400
