Two-Stage, Solenoid Controlled,
Pilot Operated, Four-Way Directional Valves
591Revised 11/94
DG5S-8 and DG5S-H8
Vickers
®
Directional Controls
Cross Section of Typical Valve (DG5S-8-6B-T-M-U-H5-30)
2
Introduction
General Description
The DG5S-8 and DG5S-H8 are
two-stage directional valves with an
integrally mounted DG4V3(S) (wet
armature solenoid) pilot valve.
These valves are used to control the
direction of flow in hydraulic circuits.
This directional control in turn provides
control over the movement of a cylinder
or the rotation of a hydraulic motor.
Features and Benefits
D Suitable for the most demanding
industrial applications with DG5S-H8
flow capacities up to 530 L/min (140
USgpm) and rated pressure of 310 bar
(4500 psi).
D Available with a wide variety of spool
and spring arrangements, stroke and
pilot choke adjustments, integral check
valves, and port orifices.
D Uses Vickers DG4V3(S) pilot valve for
exceptional responsiveness, durability,
and ease of servicing.
D Numerous electrical options allow full
compatibility and easy, reliable
connection in any system application.
D Fast response and standard low shock
models available.
D Solid cast body and core passages for
maximum strength and minimal
pressure drop.
D High-force solenoids and centering
springs assure consistent shifting
through a wide range of pressure and
silting extremes.
D Designed and backed by Vickers, with
over 70 years as the global leader in
fluid power and motion control.
3
Table of Contents
Model Series Recommended Flow Maximum Operating Pressure Page
DG5S-8 To 170 L/min (45 USgpm) 210 bar (3000 psi) 4
DG5S-H8 (High Flow) To 265 L/min (70 USgpm) 310 bar (4500 psi) 6
Accessories and Weights 22
Installation and Application Data 24
Response type
X – Fast response
Blank – Standard low shock models
Spool control modifications
1 – Stroke adjustment both ends
2 – Pilot choke (dual) adjustment
3 – Pilot choke and stroke adjustment
7 – Stroke adjustment A port end only
8 – Stroke adjustment B port end only
2-7– Dual pilot choke and stroke
adjustment A port end only
2-8– Dual pilot choke and stroke
adjustment B port end only
Blank – Omit if not required
Pilot pressure
E – External pilot pressure
Blank – Internal pilot pressure
Pilot drain
T – Internal pilot drain
Blank – External pilot drain
Pressure port check valve
K – 0,35 bar (5 psi) cracking pressure
R – 3,45 bar (50 psi) cracking pressure
S – 5,20 bar (75 psi) cracking pressure
Blank – Omit if not required
Spool/Spring arrangement
A – Spring offset to A port
B – Spring centered, solenoid A
removed
C – Spring centered
D – Pressure centered
F – Spring offset to A port, shift
to center
N – No spring detented (pilot only)
Left hand assembly
L – Left hand, single solenoid only.
Omit if not required. (For right hand
assembly, P to A port when
solenoid A is energized.)
Blank – Omit if not required
Manual override
Blank – Plain override solenoid
ends only
H – Waterproof override solenoid
ends only
H2 – Waterproof override both ends of
single solenoid
P2 – Plain override both ends of single
solenoid
Y – Lockable manual overrides
solenoid ends only/DC only
Z – No overrides in either end
Viton seals
F3 – For mineral oil & fire resistant fluids
Blank – Omit if not required
Series designation
D – Directional control valve
G – Manifold or subplate mounted
5 – Solenoid controlled, pilot operated
S – Sliding spool, rated pressure
210 bar (3000 psi)
Interface
8 – NFPA D08 (ISO 4401-08)
Spool type
Code Center position
0 – Open to T all ports
1 – Open P & A to T, closed B
2 – Closed to T all ports
3 – Closed P & B, open A to T
**4 – Tandem P to T, closed crossover
6 – Closed P only, open A & B to T
7 – Open P to A & B, closed T
**8 – Tandem P to T, open crossover
9 – Open to T all ports over tapers
11 – Open P & B to T, closed A
31 – Closed P & A, open B to T
33 – Closed P, open A & B to T
over tapers
52 – Closed center all ports
Model Codes
1
2
3
4
5
6
7
8
9
10
11
12
3 4 5876 9 101 2 11 12 13
14
15 16 17 18 19 20 21 22 23 24 25
** Type 4 and 8 spools may spin within the body causing unusual valve body wear. With this and other spool types, valve
malfunction may occur. Where these applications exist use the DG5S-8*-30/40 EN470 special designator for 4C/8C anti-spin
spools/springs.
4
DG5S-8 Model Series
Ratings
Recommended
Maximum
Operating
Press re
M xim m Pilot
Maximum Tank Line Pressure
bar (psi)
Recommended
Flow*
L/min (USgpm)
Pressure
(Ports P, A, & B)
bar (psi)
Maximum Pilot
Pressure
bar (psi)
External Drain
Models
Internal Drain
Models
Mounting Pattern
To 170 (45)
210 (3000) 210 (3000) 210 (3000) 210 (3000)
ISO 4401-08, NFPA D08
(formerly D06), and ANSI B93.7
Maximum flow table see page 8
5
Electrical connections
(Code F coil only)
T – Wired terminal block
PA – Instaplug male receptacle only
PB – Instaplug male & female receptacle
PA3 – Three pin connector
PA5 – Five pin connector
Blank – Omit if not required
Housing
(Code F coil only)
W –
1
/
2
NPT thread wiring housing
J – 20 mm thread wiring housing
Blank – Omit if not required
Electrical options
(Code U coil only)
1 – ISO with fitted plug
6 – ISO with fitted plug and lights
Solenoid indicator lights
(Code F coil with code T electrical
connections only)
L – Indicator lights
Blank – Omit if not required
Coil identification
A – 110V AC 50 Hz
B – 110V AC 50 Hz/120V AC 60 Hz*
C – 220V AC 50 Hz
D – 220V AC 50 Hz/240V AC 60 Hz*
G – 12 VDC
H – 24 VDC
DJ – 98 VDC
P – 110 VDC
* For 60 Hz or dual frequency
Solenoid energization identity
V – Solenoid identification determined
by position of solenoid (solenoid A
at port A end and/or solenoid B at
port B end)
Blank – Standard arrangement for ANSI
B93.9 (energize solenoid A for flow
P to A port)
(Code V for any valve with code 4 or
code 8 spool)
Flag symbol
M – Electrical options and features
Spool indicator switch
(Available on models with high
performance pilot DG4V3 only)
S3 – Normally open (available on
valves with code P* only)
S4 – Normally closed (available on
valves with code P* only)
S5 – Free leads (available on
valves with coil type code F only)
S6 – LVDT type DC switch with Pg7
connector plug
Coil type
U – ISO 4400
F – Flying lead
SP1 – Single 6,3 mm spade to IEC 760
SP2 – Dual 6,3 mm spade to IEC 760
Model Codes (continued)
13
14
15
16
19
20
21
Pilot valve tank pressure rating
2 – 10 bar (145 psi) DG4V3-60 with
S3, S4, or S5 spool indicator
switch
5 – 100 bar (1450 psi) DG4V3S-60
6 – 210 bar (3000 psi) DG4V3-60 with
AC solenoids and optional S6
spool indicator switch
7 – 210 bar (3000 psi) DG4V3-60 with
DC solenoids and optional S6
spool indicator switch
Pilot valve port orifices
Code Orifice diameter
*00– Solid plug
*03– 0,30 mm (0.012 in)
*06– 0,60 mm (0.024 in)
*08– 0,80 mm (0.030 in)
*10– 1,00 mm (0.040 in)
*13– 1,30 mm (0.050 in)
*15– 1,50 mm (0.060 in)
*20– 2,00 mm (0.080 in)
*23– 2,30 mm (0.090 in)
Blank – Omit if not required
(* = P, T, A, and/or B as required)
Design number
30 – DG4V3S-60 pilot valve
40 – DG4V3-60 pilot valve
(Subject to change. Installation
dimensions same for designs 30 through
39 and 40 through 49.)
Special Feature
22
23
24
18
17
25
6
DG5S-8 Model Series
Spring Centering Times at
Rated Flow and Pressure
4 & 8
Shift Time
Shift time is defined as the elapsed time
from when the pilot valve solenoid is
energized to the time the main stage
spool shifts to its full stroke. Shift time
curves are shown for standard low shock
and fast response models at 210 bar
(3000 psi) system pressure with various
pilot pressures and spools. Pressure
centering time curves are shown for
pressure centered models. Approximate
spring centering times are also listed for
spring centered models.
Shifting Action
The pilot valve solenoids of spring
centered, pressure centered, and spring
offset models must be energized
continuously to keep the main stage
spool in the shifted position. No-spring
detented models only need to be
energized momentarily (for
approximately 0.1 second).
Spring centered and pressure centered
models return the valve spool to the
center position when both solenoids are
de-energized or pilot pressure fails or
falls below minimum requirements.
Spring offset models return the spool to
the offset position by pilot pressure when
the solenoid is de-energized.
When no-spring detented models are
de-energized, the pilot and main spools
remain in their last position as long as
there are no unusual shock, vibration, or
pressure transients, and the spool axis is
horizontal. If pilot pressure fails or falls
below the minimum, the main spool will
spring center (at spring centered flow
rates), but will not drift to a reversal of
flow position. The pilot stage will remain
in the detented position.
CAUTION
Be careful when setting up flow
conditions for the spring centered
position of the main stage spool in
no-spring detented models. Be sure
to consider the effect of the direction
of the flow and the pilot pressure.
The type 9 main spool may not
ensure sufficient pilot pressure in the
center position.
0
100
80
60
40
20
70 140 210
ALL SPOOLS
PILOT PRESSURE – bar
Performance Characteristics
0
120
100
80
60
40
20
70 140
1000 2000 3000
210
0, 1, 2, 3, 6, 7, 9, 11, 31, 33 & 52
PILOT PRESSURE – bar
PILOT PRESSURE – psi
4 & 8
4 & 8
0, 1, 2, 3, 6, 7, 9, 11, 31, 33 & 52
0
300
250
200
150
100
50
70 140
1000 2000 3000
210
0, 1, 2, 3, 6, 7, 9, 11, 31, 33 & 52
PILOT PRESSURE – bar
PILOT PRESSURE – psi
4 & 8
0, 1, 2, 3, 6, 7, 9, 11, 31, 33 & 52
STANDARD LOW SHOCK
FAST RESPONSE
CENTER TO OFFSET
(P→A or P→B)
OFFSET TO OFFSET
(A→B or B→A)
Shift Time For AC Models at Rated Flow and Pressure
(Add approximately 25 milliseconds for DC models)
STANDARD LOW SHOCK
FAST RESPONSE
Centering Times for Pressure
Centered Valves at Rated
Pressure (A→P or B→P)
Fast Response
Valves with the fast response option
have decreased shift time, but increased
system shock generation. Fast response
is available by adding the symbol “X” in
the eighth position of the model code
(example: DG5S-8-2CX-M-W*-20). The
shift time and centering time curves
show both standard and fast response
times. Because of the high drain line
pressure transients generated during
shifting, use of the fast response option
is not recommended for pilot pressures
exceeding 140 bar (2000 psi).
120
1000 2000 3000
PILOT PRESSURE – psi
Spool AC DC
Types Models Models
2, 3, 6, 7, .050 sec .070 sec
31, 33, 52
0, 1, 11 .070 sec .100 sec
4, 8 .090 sec .120 sec
9 .135 sec .160 sec
TIME – milliseconds
TIME – milliseconds
TIME – milliseconds
7
Spool Type and Center Position
AB
PT
Spool
Type
Center
Position
AB
PT
AB
PT
0
1
2
Spool
Type
Center
Position
AB
PT
4
(Closed
Crossover)
6
7
AB
PT
AB
PT
Spool
Type
Center
Position
9
AB
PT
8
(Open
Crossover)
AB
PT
Spool
Type
Center
Position
11
AB
PT
AB
PT
3
AB
PT
31
AB
PT
33
Spool
Type
Center
Position
52
AB
PT
(Below)
Minimum Pilot Pressure Requirements
Minimum Pilot Pressure bar (psi)
Spool-Spring
Arrangement
Spool Type
For Recommended Flow at
System Pressure Up to
210 bar (3000 psi)
For Maximum Flow Without
Malfunction at System
Pressure of 210 bar (3000 psi)
Spring Centered
Sp
ring Offset
0, 1, 4, 7, 8, 9, and 11
(open center)
5 (75) 5 (75)
Spring
O
ffset
No-Spring Detented
2, 3, 6, 31, 33, and 52
(closed center)
8 (120) 10 (150)
Press re Centered
0, 1, 4, 8, 9, and 11
(open center)
P to A: 5 (75)
P to B: 10 (150)
P to A: 5 (75)
P to B: 10 (150)
P
ressure
C
entere
d
2, 3, 6, 31, and 33
(closed center)
P to A: 8 (120)
P to B: 16 (240)
P to A: 10 (150)
P to B: 20 (300)
Application Guidance
The pilot pressure stated is based on
internally piloted and externally drained
models in which the pilot pressure is equal
to pressure at the “P” port. With models
having open center spools, pilot pressure
can be assured by imposing a back
pressure of at least the required minimum
pilot pressure at the tank outlet connection
(this back pressure will be present at
cylinder ports if the spool type is 0, 1, 9, or
11), or by using an integral check valve
that will not impose the additional pressure
at the cylinder ports (see integral check
valve note). Normally, internal pilot
pressure for closed center spools is readily
available. When pilot pressure from a
separate source is required for either open
or closed center spools, an external
connection in the valve can be provided.
(Add “E” to the model code.)
NOTE
Surges of oil in a common pilot valve
drain 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 detented type valves.
Separate tank lines or a vented drain
manifold with a continuous
downward path to tank is necessary.
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.
When using as other than a normal
four-way valve, consult your local
Vickers representative.
Mounting Position
No-spring detented type valves must be
installed with the longitudinal axis
horizontal for good machine reliability.
Mounting position of spring centered
and spring offset valves is unrestricted
provided that the pilot pressure is
maintained as required. (Spring offset
valves do not have a spring in the main
spool section.)
8
DG5S-8 Model Series
Graphical Symbols
AB
PT
b
Y DRAIN
SPRING OFFSET ‘A’
AB
PT
b
Y DRAIN
SPRING CENTERED
SINGLE SOLENOID ‘B’
AB
PT
ab
Y DRAIN
SPRING CENTERED ‘C’
AB
PT
ab
Y DRAIN
PRESSURE CENTERED ‘D’
W DRAIN
AB
PT
Y DRAIN
NO-SPRING DETENTED ‘N’
ba
b
Y DRAIN
SPRING OFFSET
SHIFT TO CENTER ‘F’
AB
PT
Flow Ratings
Recommended
R
ecommen
d
e
d
Fl C i
Maximum Flow Without Malfunction at:
Valve
T
yp
e
Spool
T
yp
e
Flow Capacity at
210 bar (3000 psi)
L/min
(
US
g
pm
)
70 bar (1000 psi)
L/min (USgpm)
140 bar (2000 psi)
L/min (USgpm)
210 bar (3000 psi)
L/min (USgpm)
Spring Offset ‘A’ 0, 2, 6, 9, 33 170 (45) 380 (100) 380 (100) 380 (100)
Spring Centered
0, 2, 3, 6, 31, 33, 52* 170 (45) 380 (100) 380 (100) 380 (100)
ring
Centered
Single Solenoid ‘B’
Spring Centered ‘C’
1, 4, 7, 11 170 (45) 303 (80) 303 (80) 303 (80)
Spring Centered ‘C’
Sp
ring Offset
8 170 (45) 303 (80) 303 (80) 303 (80)†
Spring
Offset
Shift to Center ‘F’
9
133 (35) 190 (50) 133 (35) 133 (35)
Pressure Centered
‘D’
0, 1, 2, 3, 4, 6, 7, 8,
9, 11, 31, 33
170 (45) 380 (100) 380 (100) 380 (100)
No-Spring Detented
‘N’
0, 2, 6, 9, 33 170 (45) 380 (100) 380 (100) 380 (100)
† Fast valve switching of large oil volumes without adequate decompression circuitry can develop instantaneous flows well
above maximum ratings. Type 4 and 8 spools may spin within body causing unusual valve body wear. With this and other
spool types, valve malfunction may occur. Where these applications exist use the DG5S-8*-30/40 EN470 special feature
designator for 4C/8C anti-spin spools/prings.
* Spool type 52 for Spring Centered ‘C’ type valves only.
9
Pressure Drop
The following table lists the appropriate
pressure drop curve between ports for
each spool type.
S
p
ool
Pressure Drop Curve Number
Spool
Type
P→A
B→T P→B A→T P→T On Center
0 2 3 2 2 1
1 2 4 3 2 2
2 3 4 3 2 –
3 3 4 3 2 –
4 6 6 6 6 5
6 3 3 3 2 –
7 1 4 1 2 –
8 2 5 2 5 4
9 2 3 2 2 ♦
11 3 3 2 2 2
31 3 3 3 2 –
33 3 4 3 2 –
52 3
H
3 2 –
H Contact your Vickers representative.
♦ 13,8 bar (200 psi) at 95 L/min (25 USgpm) and 43,3 bar (700 psi) at 170 L/min (45 USgpm)
For example, to find the pressure drop
from “P” to “B” for a valve with a type 2
spool, first locate 2 in the Spool Type
column. The reference curve number at
the intersection of the type 2 row and
the P→B column is 3.
The pressure drop curves give
approximate pressure drop (DP) when
passing 21 cSt (100 SUS) fluid(s)
having 0.865 specific gravity (G). To
calculate the pressure drop for any other
specific gravity (G
1
), use the formula
DP
1
=DP(G
1
/G). For any other viscosity,
the pressure drop will change as
follows:
Viscosity
cSt (SUS)
Percentage of DP
(approx.)
14 (75) 93
32 (150) 111
43 (200) 119
54 (250) 126
65 (300) 132
76 (350) 137
86 (400) 141
25 50 75 100
7
14
21
0
FLOW – USgpm
FLOW – L/min
PRESSURE DROP – bar
PRESSURE DROP – psi
1
2
3
4
5
6
Pressure Drop Curves
100
200
300
95 190 285 380
10
DG5S-8 Model Series
Dimensions in mm (inches)
53,0
(2.09)
100,7 (3.96)
122,5 (4.83)
184,0 (7.24)
245,0 (9.65)
43,0
(1.69)
31,0
(1.22)
93,00 (3.66)
200 (7.87) AC
220 (8.66) DC
98,8 (3.89) AC
108,8 (4.28) DC
107 (4.21) AC
127 (5.00) DC
Clearance for removal
of solenoid coil
51 (2.01) AC DG4V-3
45 (1.77) AC DG4V-3S
61 (2.40) DC
Mounting
bolt clamp
height
6 Places
81,0
(3.19)
111,0
(4.37)
162,00
(6.38)
77,0 (3.03)
130,2 (5.12)
153,0 (6.02)
68,0
(2.70)
34,4
(1.35)
53,2 (2.09)
46,0
(1.81)
92,0
(3.62)
Pressure port
∅ 23,00 (.906)
Tank port
∅ 23,00 (.906)
Pilot drain port “Y”
(For external pilot drain models)
Port “B”
Port “A”
∅ 13,50 (.531)
(6 holes for mounting)
Pilot pressure port “X”
(For external pilot
pressure models)
Port “A” test connection
.4375-20 UNF-2B straight thread
Port “B” test connection
.4375-20 UNF-2B straight thread
Mounting surface
(seals furnished)
136,00
(5.35)
57,0
(2.25)
202,00
(7.95)
50,00
(1.97)
114,0
(4.50)
25,00
(.98)
6,4
(.25)
1,5
(.06)
∅ 6.4 (.25)
(2 rest pins)
179,75
(7.08)
11
172,2 (6.78)
41,0
(1.61)
242,0
(9.53)
172,2 (6.78)
134,4
(5.29)
84,0
(3.31)
167,0 (6.57)
Pilot choke adjustments
Stroke adjustments
Pilot Choke and Stroke
Adjustments
Pilot Choke Adjustment(s)
Pilot choke is adjusted by backing off
locknuts and turning adjusting screws
inward (clockwise) to decrease rate of
spool travel and outward (counterclock-
wise) to increase the rate. Pilot oil for
models with this feature should be taken
from a source having a constant pres-
sure. See spool control modifications in
model code.
Stroke Adjustment(s)
Stroke adjustment limits movement of
the main stage spool. Backing off the
jam nut and turning the adjusting screw
inward (clockwise) decreases spool
stroke. See spool control modifications
in model code.
Pilot Valve Port Restrictor
Plugs
Restrictor plugs are available for use in
ports P, T, A, or B. These can be used
for restricting flow or for circuit
dampening. Restrictor plugs are not
recommended for use above 210 bar
(3000 psi) system pressure.
Part
Number{
Orifice ∅
Model
Code
694353 Blank *00
694341 0,30 (0.012) *03
694342 0,60 (0.024) *06
694343 0,80 (0.030) *08
694344 1,00 (0.040) *10
694345 1,30 (0.050) *13
694346 1,50 (0.060) *15
694347 2,00 (0.080) *20
694348 2,30 (0.090) *23
{ – Available in multiples of 25 per part
number
* – P, T, A, or B as required
M5 x 0.8-6H thread
for plug extraction
12
DG5S-8 Model Series
Optional Features
Integral Check Valves
For Internal Pilot Pressure:
An integral pressure port check is
required for “internally piloted” valves
with open center spools (0, 1, 4, 8, 9,
and 11). The pilot pressure generated is
the total of the “P→T” drop through the
valve in the center condition, the
pressure drop through the check valve,
and the pressure at the tank port. For
proper operation, the total pressure drop
must be greater than the minimum
required pilot pressure (see chart).
To Prevent Load Drop:
A check valve in the pressure port can
be used to prevent reverse flow from a
cylinder port to the pressure port.
For minimum pilot pressure table see
page 7
Pressure Centered Valves
This option provides faster spring
centering time by using pilot pressure to
center the spool. The centering springs
are used in addition to pilot pressure to
insure positive centering of the spool.
The valve spool is returned to center
position by pilot pressure and centering
springs when both solenoids are
de-energized. If pilot pressure fails or
falls below the required minimum, the
spool will return to center position at
minimum pilot pressure flow rates for
pressure centered valves. Pilot
pressure is not available through use of
an integral check valve. The pressure
centering times for pressure centered
models are shown in curves for various
pilot pressures. See page 6.
183,9 (7.24)
306,4 (12.07)
10
8
6
4
2
0 95 190 285 380
25 50 75 100
100
50
150
FLOW – USgpm
FLOW – L/min
PRESSURE DROP – bar
PRESSURE DROP – psi
Pressure Drop Across Check Valve
“S” Spring
“R” Spring
“K” Spring
13
DG5S-H8 Model Series
Ratings
Recommended
Maximum
Operating
Press re
M xim m Pilot
Maximum Tank Line Pressure
bar (psi)
Recommended
Flow*
L/min (USgpm)
Pressure
(Ports P, A, & B)
bar (psi)
Maximum Pilot
Pressure
bar (psi)
External Drain
Models
Internal Drain
Models
Mounting Pattern
To 265 (70)
310 (4500) 310 (4500) 310 (4500) 210 (3000)
ISO 4401-08, NFPA D08
(formerly D06), and ANSI B93.7
*See maximum flow table on page 17.
Response type
X – Fast response
Blank – Standard low shock models
Spool control modifications
1 – Stroke adjustment both ends
2 – Pilot choke (dual) adjustment
3 – Pilot choke and stroke adjustment
7 – Stroke adjustment A port end only
8 – Stroke adjustment B port end only
2-7– Dual pilot choke and stroke
adjustment A port end only
2-8– Dual pilot choke and stroke
adjustment B port end only
Blank – Omit if not required
Pilot pressure
E – External pilot pressure
Blank – Internal pilot pressure
Pilot drain
T – Internal pilot drain
Blank – External pilot drain
Pressure port check valve
K – 0,35 bar (5 psi) cracking pressure
R – 3,45 bar (50 psi) cracking pressure
S – 5,20 bar (75 psi) cracking pressure
Blank – Omit if not required
Spool/Spring arrangement
A – Spring offset to A port
B – Spring centered, solenoid A
removed
C – Spring centered
F – Spring offset to A port, shift
to center
N – No spring detented (pilot only)
Left hand assembly
L – Left hand, single solenoid only.
Omit if not required. (For right hand
assembly, P to A port when
solenoid A is energized.)
Blank – Omit if not required
Manual override
Blank – Plain override solenoid
ends only
H – Waterproof override solenoid
ends only
H2 – Waterproof override both ends of
single solenoid
P2 – Plain override both ends of single
solenoid
Y – Lockable manual overrides
solenoid ends only/DC only
Z – No overrides in either end
Viton seals
F3 – For mineral oil & fire resistant fluids
Blank – Omit if not required
Series designation
D – Directional control valve
G – Manifold or subplate mounted
5 – Solenoid controlled, pilot operated
S – Sliding spool, rated pressure
310 bar (4500 psi)
High flow interface
8 – NFPA D08 (ISO 4401-08)
Spool type
Code Center position
0 – Open to T all ports
1 – Open P & A to T, closed B
2 – Closed to T all ports
3 – Closed P & B, open A to T
4 – Tandem P to T, closed crossover
6 – Closed P only, open A & B to T
8 – Tandem P to T, open crossover
9 – Open to T all ports over tapers
11 – Open P & B to T, closed A
31 – Closed P & A, open B to T
33 – Closed P, open A & B to T
over tapers
Model Codes
1 2 3 4 5 6 7 8 9 2010 11 12 13 14 15 16 17 18 19 21 22 23 24
1
2
3
4
5
6
7
8
9
10
11
12
14
DG5S-H8 Model Series
Electrical connections
(Code F coil only)
T – Wired terminal block
PA – Instaplug male receptacle only
PB – Instaplug male & female receptacle
PA3 – Three pin connector
PA5 – Five pin connector
Blank – Omit if not required
Housing
(Code F coil only)
W –
1
/
2
NPT thread wiring housing
J – 20 mm thread wiring housing
Blank – Omit if not required
Electrical options
(Code U coil only)
1 – ISO with fitted plug
6 – ISO with fitted plug and lights
Solenoid indicator lights
(Code F coil with code T electrical
connections only)
L – Indicator lights
Blank – Omit if not required
Coil identification
A – 110V AC 50 Hz
B – 110V AC 50 Hz/120V AC 60 Hz*
C – 220V AC 50 Hz
D – 220V AC 50 Hz/240V AC 60 Hz*
G – 12 VDC
H – 24 VDC
DJ – 98 VDC
P – 110 VDC
* For 60 Hz or dual frequency
Solenoid energization identity
V – Solenoid identification determined
by position of solenoid (solenoid A
at port A end and/or solenoid B at
port B end)
Blank – Standard arrangement for ANSI
B93.9 (energize solenoid A for flow
P to A port)
(Code V for any valve with code 4 or
code 8 spool)
Flag symbol
M – Electrical options and features
Spool indicator switch
(Available on models with high
performance pilot DG4V3 only)
S3 – Normally open (available on
valves with code P* only)
S4 – Normally closed (available on
valves with code P* only)
S5 – Free leads (available on
valves with coil type code F only)
S6 – LVDT type DC switch with Pg7
connector plug
Coil type
U – ISO 4400
F – Flying lead
SP1 – Single 6,3 mm spade to IEC 760
SP2 – Dual 6,3 mm spade to IEC 760
Model Codes (continued)
20
13
14
15
16
19
21
17
18
Pilot valve tank pressure rating
2 – 10 bar (145 psi) DG4V3-60 with
S3, S4, or S5 spool indicator
switch
5 – 100 bar (1450 psi) DG4V3S-60
6 – 210 bar (3000 psi) DG4V3-60 with
AC solenoids and optional S6
spool indicator switch
7 – 210 bar (3000 psi) DG4V3-60 with
DC solenoids and optional S6
spool indicator switch
Pilot valve port orifices
Code Orifice diameter
*00– Solid plug
*03– 0,30 mm (0.012 in)
*06– 0,60 mm (0.024 in)
*08– 0,80 mm (0.030 in)
*10– 1,00 mm (0.040 in)
*13– 1,30 mm (0.050 in)
*15– 1,50 mm (0.060 in)
*20– 2,00 mm (0.080 in)
*23– 2,30 mm (0.090 in)
Blank – Omit if not required
(* = P, T, A, and/or B as required)
Design number
60 – DG4V3S-60 pilot valve
70 – DG4V3-60 pilot valve
(Subject to change. Installation
dimensions same for designs 60 through
69 and 70 through 79.)
61 – For DG4V-3S-60 piloted valves
with 4C/8C type special anti-spin main
stage spools/spring.
71 – For DG4V-3-60 piloted valves with
4C/8C type special anti-spin main stage
spools/springs.
22
23
24
15
Spring Centering Times at
Rated Flow and Pressure
Shift Time
Shift time is defined as the elapsed time
from when the pilot valve solenoid is
energized to the time the main stage
spool shifts to its full stroke. Shift time
curves are shown for standard low shock
and fast response models at 210 bar
(3000 psi) system pressure with various
pilot pressures and spools. Pressure
centering time curves are shown for
pressure centered models. Approximate
spring centering times are also listed for
spring centered models.
Shifting Action
The pilot valve solenoids of spring
centered and spring offset models must
be energized continuously to keep the
main stage spool in the shifted position.
No-spring detented models only need to
be energized momentarily (for
approximately 0.1 second).
Spring centered models return the valve
spool to the center position when both
solenoids are de-energized or pilot
pressure fails or falls below minimum
requirements. Spring offset models
return the spool to the offset position by
pilot pressure when the solenoid is
de-energized.
Performance Characteristics
Fast Response
Valves with the fast response option
have decreased shift time, but increased
system shock generation. Fast response
is available by adding the symbol “X” in
the eighth position of the model code
(example: DG5S-H8-2CX-M-W*-70). The
shift time and centering time curves
show both standard and fast response
times. Because of the high drain line
pressure transients generated during
shifting, use of the fast response option
is not recommended for pilot pressures
exceeding 140 bar (2000 psi).
Spool AC DC
Types Models Models
2, 3, 6, 31, 33 .076 sec .088 sec
0, 1, 9, 11 .088 sec .100 sec
4, 8 .110 sec .130 sec
0
140
120
100
80
60
40
70 140
1000 2000 3000
210
PILOT PRESSURE – bar
PILOT PRESSURE – psi
PILOT PRESSURE – bar
PILOT PRESSURE – psi
STANDARD LOW SHOCK
FAST RESPONSE
CENTER TO OFFSET
(P→A or P→B)
OFFSET TO OFFSET
(A→B or B→A)
Shift Time For AC Models at Rated Flow and Pressure
(Add approximately 25 milliseconds for DC models)
TIME – milliseconds
TIME – milliseconds
20
When no-spring detented models are
de-energized, the pilot and main spools
remain in their last position as long as
there are no unusual shock, vibration, or
pressure transients, and the spool axis is
horizontal. If pilot pressure fails or falls
below the minimum, the main spool will
spring center (at spring centered flow
rates), but will not drift to a reversal of
flow position. The pilot stage will remain
in the detented position.
CAUTION
Be careful when setting up flow
conditions for the spring centered
position of the main stage spool in
no-spring detented models. Be sure
to consider the effect of the direction
of the flow and the pilot pressure.
The type 9 main spool may not
ensure sufficient pilot pressure in the
center position.
280 310
4000 4500
0
140
120
100
80
60
40
70 140
1000 2000 3000
210
20
280 310
4000 4500
16
DG5S-H8 Model Series
Spool Type and Center Position
AB
PT
Spool
Type
Center
Position
AB
PT
AB
PT
0
1
2
Spool
Type
Center
Position
AB
PT
4
(Closed
Crossover)
6
AB
PT
Spool
Type
Center
Position
9
AB
PT
8
(Open
Crossover)
AB
PT
Spool
Type
Center
Position
AB
PT
3
AB
PT
31
AB
PT
33
11
AB
PT
Minimum Pilot Pressure Requirements
Minimum Pilot Pressure bar (psi)
Spool-Spring
Arrangement
Spool Type
For Recommended Flow at
System Pressure Up to
310 bar (4500 psi)
For Maximum flow Without
Malfunction at System
Pressure of 310 bar (4500 psi)
Spring Centered
Spring Offset
0, 1, 4, 8, 9, and 11
(open center)
5 (75) 5 (75)
ring
Offset
Shift to Center
No-Spring Detented
2, 3, 6, 31, and 33
(closed center)
8 (120) 10 (150)
Application Guidance
The pilot pressure stated is based on
internally piloted and externally drained
models in which the pilot pressure is
equal to pressure at the “P” port. With
models having open center spools, pilot
pressure can be assured by imposing a
back pressure of at least the required
minimum pilot pressure at the tank
outlet connection (this back pressure will
be present at cylinder ports if the spool
type is 0, 1, 9, or 11), or by using an
integral check valve that will not impose
the additional pressure at the cylinder
ports (see integral check valve note).
Normally, internal pilot pressure for
closed center spools is readily available.
When pilot pressure from a separate
source is required for either open or
closed center spools, an external
connection in the valve can be provided.
(Add “E” to the model code.)
NOTE
Surges of oil in a common pilot valve
drain 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 detented type valves.
Separate tank lines or a vented drain
manifold with a continuous
downward path to tank is necessary.
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.
When using as other than a normal
four-way valve, consult your local
Vickers representative.
Mounting Position
No-spring detented type valves must be
installed with the longitudinal axis
horizontal for good machine reliability.
Mounting position of spring centered
and spring offset valves is unrestricted
provided that the pilot pressure is
maintained as required. (Spring offset
valves do not have a spring in the main
spool section.)
17
Graphical Symbols
AB
PT
b
Y DRAIN
SPRING OFFSET ‘A’
AB
PT
b
Y DRAIN
SPRING CENTERED
SINGLE SOLENOID ‘B’
AB
PT
ab
Y DRAIN
SPRING CENTERED ‘C’
b
Y DRAIN
SPRING OFFSET
SHIFT TO CENTER ‘F’
AB
PT
Y DRAIN
NO-SPRING DETENTED ‘N’
ba
AB
PT
Flow Ratings
M xim m Flow Witho t M lf nction t:
Recommended
M
ax
i
mum
Fl
ow
Wi
t
h
out
M
a
lf
unct
i
on at:
Valve
Type
Spool
Type
Recommended
Flow Capacity at
210 bar (3000 psi)
L/min (USgpm)
70 bar (1000 psi)
L/min (USgpm)
140 bar (2000 psi)
L/min (USgpm)
210 to 310 bar
(3000 to 4500 psi)
L/min (USgpm)
Spring Offset ‘A’ 0, 2, 6, 9, 33 265 (70) 530 (140) 530 (140) 530 (140)
Spring Centered 0, 2, 3, 4, 6, 31, 33 265 (70) 530 (140) 530 (140) 530 (140)
ring
Centered
Single Solenoid ‘B’
Spring Centered ‘C’
1, 11 265 (70) 530 (140) 530 (140) 454 (120)
Spring Centered ‘C’
Sp
ring Offset
8 265 (70) 530 (140) 530 (140) 530 (140)†
Spring
Offset
Shift to Center ‘F’
9
265 (70) 265 (70) 340 (90) 380 (100)
No-Spring Detented
‘N’
0, 2, 6, 9, 33 265 (70) 530 (140) 530 (140) 530 (140)
† Fast valve switching of large oil volumes without adequate decompression circuitry can develop instantaneous flows well
above maximum ratings. Type 4 and 8 spools may spin within body causing unusual valve body wear. With this and other
spool types, valve malfunction may occur. Where these applications exist use DG5S-H8*-61/71 designs for special 4C/8C
anti-spin spools/springs.
18
DG5S-H8 Model Series
Pressure Drop
The following table lists the appropriate
pressure drop curve between ports for
each spool type.
S
p
ool
Pressure Drop Curve Number
Spool
Type
P→A
B→T P→B A→T P→T On Center
0 2 3 2 3 2
1 1 1 2 3 5
2 1 2 1 3 –
3 1 2 1 4 –
4 2 4 2 4 6
6 1 4 1 4 –
8 2 4 2 4 6
9 2 3 2 4 –
11 2 1 1 3 5
31 1 4 1 2 –
33 1 2 1 3 –
For example, to find the pressure drop
from “P” to “B” for a valve with a type 2
spool, first locate 2 in the Spool Type
column. The reference curve number at
the intersection of the type 2 row and
the P→B column is 1.
The pressure drop curves give
approximate pressure drop (DP) when
passing 21 cSt (100 SUS) fluid(s)
having 0.865 specific gravity (G). To
calculate the pressure drop for any other
specific gravity (G
1
), use the formula
DP
1
=DP(G
1
/G). For any other viscosity,
the pressure drop will change as
follows:
Viscosity
cSt (SUS)
Percentage of DP
(approx.)
14 (75) 93
32 (150) 111
43 (200) 119
54 (250) 126
65 (300) 132
76 (350) 137
86 (400) 141
25 50 75 100
7
14
21
0
95 190 285 380
FLOW – USgpm
FLOW – L/min
PRESSURE DROP – bar
1
6
Pressure Drop Curves
125
100
475
200
300
PRESSURE DROP – psi
2
3
5
4
150
570
19
97,0
(3.82)
Dimensions in mm (inches)
59,0
(2.32)
93,00 (3.66)
200 (7.87) AC
220 (8.66) DC
98,8 (3.89) AC
108,8 (4.28) DC
107 (4.21) AC
127 (5.00) DC
Clearance for removal
of solenoid coil
51 (2.01) AC DG4V-3
45 (1.77) AC DG4V-3S
61 (2.40) DC
127,0
(5.00)
178,00
(7.01)
77,0 (3.03)
130,2 (5.12)
153,0 (6.02)
68,0
(2.70)
34,4
(1.35)
53,2 (2.09)
46,0
(1.81)
92,0
(3.62)
Pressure port
∅ 25,00 (.984)
Tank port
∅ 25,00 (.984)
Pilot drain port “Y”
(For external pilot drain models)
Port “B”
Port “A”
∅ 13,50 (.531)
(6 holes for mounting)
Pilot pressure port “X”
(For external pilot
pressure models)
152,00
(5.98)
57,0
(2.25)
218,00
(8.58)
50,00
(1.97)
114,0
(4.50)
25,00
(.98)
6,4
(.25)
1,5
(.06)
195,75
(7.71)
53,0
(2.09)
100,7 (3.96)
142,6 (5.61)
184,0 (7.24)
285,3 (11.23)
∅ 6.4 (.25)
(2 rest pins)
6 Places
47,0
(1.85)
Port “A” test connection
.4375-20 UNF-2B straight thread
Port “B” test connection
.4375-20 UNF-2B straight thread
Mounting surface
(seals furnished)
Mounting
bolt clamp
height
6 Places
20
DG5S-H8 Model Series
207,3 (8.16)
57,0
(2.24)
258,0
(10.16)
207,3 (8.16)
150,3
(5.92)
84,0
(3.31)
167,0 (6.57)
Pilot choke
adjustments
Stroke adjustments
Pilot Choke and Stroke
Adjustments
Pilot Choke Adjustment(s)
Pilot choke is adjusted by backing off
locknuts and turning adjusting screws
inward (clockwise) to decrease rate of
spool travel and outward (counterclock-
wise) to increase the rate. Pilot oil for
models with this feature should be taken
from a source having a constant pres-
sure. See spool control modifications in
model code
Stroke Adjustment(s)
Stroke adjustment limits movement of
the main stage spool. Backing off the
jam nut and turning the adjusting screw
inward (clockwise) decreases spool
stroke. See spool control modifications
in model code.
Pilot Valve Port Restrictor
Plugs
Restrictor plugs are available for use in
ports P, T, A, or B. These can be used
for restricting flow or for circuit
dampening. Restrictor plugs are not
recommended for use above 210 bar
(3000 psi) system pressure.
Part
Number{
Orifice ∅
Model
Code
694353 Blank *00
694341 0,30 (0.012) *03
694342 0,60 (0.024) *06
694343 0,80 (0.030) *08
694344 1,00 (0.040) *10
694345 1,30 (0.050) *13
694346 1,50 (0.060) *15
694347 2,00 (0.080) *20
694348 2,30 (0.090) *23
{ – Available in multiples of 25 per part
number
* – P, T, A, or B as required
M5 x 0.8-6H thread
for plug extraction
21
Optional Features
Integral Check Valves
For Internal Pilot Pressure:
An integral pressure port check is
required for “internally piloted” valves
with open center spools (0, 1, 4, 8, 9,
and 11). The pilot pressure generated is
the total of the “P→T” drop through the
valve in the center condition, the
pressure drop through the check valve,
and the pressure at the tank port. For
proper operation, the total pressure drop
must be greater than the minimum
required pilot pressure (see chart).
To Prevent Load Drop:
A check valve in the pressure port can
be used to prevent reverse flow from a
cylinder port to the pressure port.
Ffor minimum pilot pressure table see
page 16
17
15
10
5
0 150 300 450
40 80 120 140
210
245
FLOW – USgpm
FLOW – L/min
PRESSURE DROP – bar
PRESSURE DROP – psi
Pressure Drop Across Check Valve
“S” Spring
“R” Spring
“K” Spring
70
140
530
22
Accessories and Weights
Mounting Subplates
19,0
(.75)
29,4
(1.16)
77,0 (3.03)
94,5 (3.72)
112,7 (4.44)
203,0 (8.00)
74,6
(2.94)
92,0
(3.62)
114,0
(4.50)
25,4
(1.00)
17,5
(.69)
100,8 (3.97)
130,2 (5.12)
181,0 (7.12)
53,2
(2.09)
73,0
(2.87)
17,5
(.69)
96,8
(3.81)
35,0
(1.38)
“T” – Tank connection♦
“X” – External pilot
pressure connection
∅12,9 (.508) thru
.5625-18 UNF-2B thread
for .375 O.D. tubing
From rear – 2 holes
“X” and “Y”
“P” – Pressure
inlet connection♦
(must not be greater than
∅24,61 (.969) when used
with check valve models)
∅7,41 (.281) – 7,9 (.31) deep
(2 holes for rest pins)
“Y” – Pilot valve
drain connection♦
(not required for internally drained models)
∅10,3 (.406)
(4 holes for mounting)
Cylinder connection “B”♦
♦ – See table for 4 holes either:
∅“F” thru system ports, or
“E” SAE straight thread ports
(from rear) system connections
11,0 (.44)R
.500-13 UNC-2B thread 6 holes
(Subplate with M12 x 1,75 metric screw
holes available on special order)
Cylinder connection “A”♦
Model “E” Thread Tubing O.D. “F” Diameter Weight (approx.)
DGSM–8–10–T12 1.0625-12 UN .750 23,79 (.937)
DGSM–8–10–T16 1.3125-12 UN 1.000
24 61 ( 969)
4,9 kg. (11 lb.)
DGSM–8–10–T20
1.6250-12 UN 1.250
24
,
61
(
.
969)
,g( )
23
Bolt Kits
Bolt kits are used for mounting valves to
a subplate or manifold. Valves,
subplates, and mounting bolts must be
ordered separately.
Two center mounting bolts are optional.
All six bolts are recommended for
maximum seal life at pressures of 140
bar (2000 psi) and higher.
When a subplate is not used, a
machined pad (as indicated by subplate
shaded area) must be provided for
mounting. The pad must be flat within
0,0013 mm (0.0005 inch) and smooth
within 1,6 mm (63 microinch). If
mounting bolts are provided by the
customer, they should be SAE grade 7
or better.
The maximum recommended mounting
bolt torque is 79 N-m (700 lb (f) in).
Model and Assembly Numbers
Model Series Kit Model Number Quantity Thread Size Length Assembly Number
DG5
S
8
BKDG06635 (inch bolts) 6 .500-13 2.50” 255635
DG5S-8
BKDG8655M (metric bolts)
6 M12 65 mm 255655
DG5
S
-H8
BKDGH06618 (inch bolts) 6 .500-13 UNC 3.00” 255618
DG5
S-
H8
BKDGH8658M (metric bolts) 6 M12 80 mm 255658
Valve Weights
Model Series Pilot Valve Solenoids Additional Features Weight kg (lbs)
1 – 14,5 (32)
2 – 15,0 (33)
2 Pressure centered 16,8 (37)
DG5S-8
2
Pilot choke (meter out) 16,1 (35.5)
2 Stroke adjustment (one end) 15,7 (34.5)
2 Stroke adjustment (both ends) 16,4 (36)
2 Pilot choke and stroke adjustment (both ends) 17,5 (38.5)
1 – 16,8 (37)
2 – 17,3 (38)
DG5
S
H8
2 Pilot choke (meter out) 18,4 (40.5)
DG5S-H8
2
Stroke adjustment (one end) 17,8 (39)
2 Stroke adjustment (both ends) 18,2 (40)
2 Pilot choke and stroke adjustment (both ends) 19,3 (42.5)
Installation and Application Data
Fluids and Seals
The use of synthetic fire resistant fluids
requires valve with special seals
(fluorocarbon).
Add prefix “F3” to model number when
phosphate ester fluids or their blends
are to be used. Water glycol, water-in-oil
emulsions, and petroleum oil may be
used with standard (Buna-N) seals.
Refer to Vickers data sheet I-286-S,
“Hydraulic Fluid and Temperature
Recommendations for Industrial
Machinery” for fluid and temperature
recommendations. Pilot valve has “F3”
seals (fluorocarbon) as standard. All
internal seals in main stage are also
“F3” seals. Mounting face seals are
standard (Buna-N) seals.
Electrical Information
Refer to Vickers publication
GB-C-2015B for details on solenoids,
solenoid indicator lights, terminal strips,
German DIN Standard 43650 plugs,
Vickers “Insta-Plugs”, and NFPA
Standard T3.5.29-1980 electrical
connectors.
24
Installation and Application Data
Pilot Valve Drain
(Internal/External)
“Internal Drain” models drain the pilot
valve through the tank port of the main
stage. “External Drain” models drain the
pilot valve through the “Y” port of the
main stage. To provide proper operation
without malfunction, the pilot pressure
must always exceed tank or drain line
pressure by the “Minimum Pilot
Pressure” required per valve and spool
type. (Refer to minimum pilot pressure
table see page 16 ) Tank or drain line
surges which would reduce this
differential are to be avoided. Such
surges may cause the main stage spool
to shift.
Main stage tank pressure is limited to
the tank line rating of the pilot valve on
“Internal Drained” models (those that
include “T” in the model code). “Internal
Drain” may be used with all models,
except the DG5S-8 model series
pressure centered “D” models. Pressure
centered valves must be externally
drained through “Y” and “W” ports. To
achieve the maximum tank line rating
(3000 psi) of the main stage an
“External” pilot drain must be used, and
it is recommended that a separate line
be provided directly to tank.
Fluid Cleanliness
Proper fluid condition is essential for
long and satisfactory life of hydraulic
components and systems. Hydraulic
fluid must have the correct balance of
cleanliness, materials, and additives for
protection against wear of components,
elevated viscosity, and inclusion of air.
Vickers supports and recommends the
hydraulic Systems Standards For
Stationary Industrial Machinery
advanced by the American National
Standards Institute; ANSI/(NFPA/JIC)
T2.24.2-1991. Key elements of the
Standard, as well as other vital
information on the correct methods for
treating hydraulic fluid, are included in
Vickers publication 561 “Vickers Guide
to Systemic Contamination Control”
available from your local Vickers
distributor or by contacting Vickers,
Incorporated. Recommendations on
filtration and the selection of products to
control fluid condition are included in
this publication.
Recommended cleanliness levels using
petroleum oil under common conditions
is based on the highest fluid pressure
levels in the system:
System Pressure Level
Product 1000 psi 2000 psi 3000+ psi
Directional Valves 20/18/15 20/18/15 19/17/14
Fluids other then petroleum, severe service cycles, or temperature extremes are cause for adjustment of these cleanliness
codes. See Vickers publication 561 for exact details.