SystemStak™ Valves

ISO4401 Size 05

General Description The general rule for this group is that the DGMC relief valve
Eaton SystemStak valves make compact hydraulic systems
TM be placed nearest the subplate or manifold. The DGMDC
in which modular valves are “sandwich” mounted between a direct check valve should be placed nearest the directional
directional valve and a standard mounting surface. Compact control valve.
design improves system response by elimination of external The DGMR1 sequence valve should be the farthest valve
fluid conductors, thereby resulting in elimination of resonant from the directional valve. The DGMR1 must be mounted
sounds which are noisy and lead to leakage. The design directly to a subplate or manifold with a drain port, to
of these valves is well proven and offers opportunities for externally drain the DGMR1 at the mounting face.
achieving small control assemblies, especially when the 2. Valves acting in the service lines (“A” and/or “B”)
valves are used with multi-station manifolds.
DGMC Relief valve
Mounting surface is available for interfacing with directional
valves and is coded “5” in the model numbers of Eaton DGMC2 Dual relief valve
SystemStak valves. The “5 interface accepts Eaton DG4S4 DGMDC Direct check
directional valves and other directional valves with a standard DGMPC Pilot operated check
ISO 4401-05, NFPA-D05, ANSI/B93.7M size D05 or CETOP-5
port pattern. DGMFN Flow control
Each valve “stak” can be configured to provide the specific DGMR Counterbalance
combination of functions required to meet the The general rule for this group is that the DGMC system relief
system’s needs. valve be the farthest valve from the directional valve.
SystemStak valves are divided into two groups: When using a DGMPC with a DGMFN (meter-out), the
1. Valves acting in the pressure and/or tank lines DGMPC should be nearest the directional valve.
(“P” and/or “T”)
DGMC Relief valve
DGMDC Direct check
DGMFN Flow control
DGMR1 Sequence valve
DGMX2 Pressure reducing

Features and Benefits

• Reduced space requirements Eaton bolt-extender kits simplify valve installation by
Stackable SystemStak valves, used with ISO 4401- permitting each valve body to be separately and quickly
05, CETOP 5 (NFPA-D05) directional controls, provide installed, and correctly torqued down. The kits also
compact cost-effective control of actuator direction, allow the directional valve to be removed for service or
speed and force. replacement without disturbing the stack.
• Reduced installed cost • Rugged & reliable
SystemStak valves eliminate all intervalve piping and Internal working parts are produced from hardened
connections, thereby reducing the number of potential steel, and reside in a continuous-cast ductile (spheroidal
leakage points. Installed cost is less than when using graphite) iron body. Excellent reliability is ensured,
N conventional subplate- or line-mounted valves. even in high pressure applications. Working parts are
• Versatile & easy to install serviceable without removing valves from the stack.
SystemStak valves have all the internal passages
necessary to serve the directional valve mounted above
them. Any directional valve with a standard ISO 4401-
05, NFPA-D05, ANSI/B93.7M size D05 or CETOP-5
port pattern can be used with ISO 4401-05 SystemStak
valves.

N-2 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Easy to Understand, Easy to Design
SystemStak circuitry is best shown using slightly different
symbols than those for traditional valve configurations. Each
SystemStak symbol has the same basic form and size as
shown in Figure 1.
P T B A

DGMPC-5-AB-BA-30

DGMFN-5–Y-A-B-30
Figure 1.

P T B A
DGMC-5-PT-30

P T B A
Figure 2. Figure 4.
For ease of understanding, remember the directions of flow
A combination of directional valve, SystemStak valve(s) and
for each line, and that all four flow paths pass through each
subplate/ manifold block (Figure 5 single station subplate and
valve (see Figure 2). For clarity, directional valves are drawn
Figure 6 multi station manifold) completes the assembly.
vertically in SystemStak circuit diagrams (see Figure 3.)
B A
P
T

Figure 5.
B A B A

P
T
P T B A
Figure 3. Figure 6.

Each station (valve stack) is a combination of functions. When Figure 7 represents a complete SystemStak system, showing
designing and assembling SystemStak valves, care must be typical use of functions available from this range. The circuit
taken to ensure that they interact as required by stacking diagram also shows the use of a tapping plate for accessing
the functions in the correct sequence (see Figure 4). Direct line pressure readings, and a blanking plate to close off an
check valves should be placed closest to the directional unused station of a multi-station manifold.
valve. Relief valves should normally be positioned next to the
mounting surface (i.e. at the bottom of the stack). When both
a flow control and a pilot operated check valve is required, it
is recommended that the flow control valve be between the
check valve and the actuator to prevent check valve chatter.

DGMC-5-BA-30
Blanking
N
DGMX2-5-PA-30 plate
DGMPC-5-AB-BA-30

DGMC-5-PT-30

DGMFN-5-Y-A-B-30
DGMX2-5-PP-30
P
T

B A B A B A

Figure 7.

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-3

 Table of Contents

Function Basic symbol Basic model Features Page

Relief DGMC/DCMC2 Single, dual and crossport 5

models

Reducing/relieving DGMX2 Piloted from (and reduced 13

pressure in) port P, A or B

Sequence DGMR1 Single port P sequence 17

Counterbalance DGMR Control in port T 20

Flow Control DGMFN Single or dual port, meter-in 24

or meter-out

Pilot operated check DGMPC Single in port A or B; dual 29

in ports A and B

Direct check DGMDC Single check in any port; dual 32

check in ports A and B only

N-4 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

SystemStak™ Pilot Operated Relief
Valves

DGMC/DGMC2
General Description
These two-stage valves limit system pressure by directing The valve pressure setting is adjustable by means of either
flow to tank or the opposite cylinder port (A-B/B-A crossport an adjusting screw and locknut, a hand-knob adjuster, or a
types) when system pressure reaches the valve setting. micrometer knob with keylock. External remote control/vent
connections are available on all models except crossport
Pressure control may be obtained in “A”, “B”, “A” and “B”, relief. If required on crossport models, contact your Eaton
or “P” port, and pilot flow may be internally or externally representative.
drained, depending on model type. Any pressure in the line to
which these valves are drained is additive to the valve pres-
sure setting.

Model Code
DGMC - (2) - 5 - * * - * * - (E) - (B) (A) - * * - (E) - (RC) - (*) - 30

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1 Valve function 6 Pressure range 12 Adjustment device

Manifold or subplate mounted pressure A – 4 to 50 bar (60 to 725 psi) Omit for single relief models.
relief valve. B – 4 to 100 bar (60 to 1450 psi) H – Knob adjuster
F – 4 to 200 bar (60 to 2900 psi) K – Micrometer knob with keylock
G – 4 to 315 bar (60 to 4500 psi) W – Screw with locknut
2 Valve type
2 – Dual relief cavities
7 Adjustment device 13 External drain
Blank – Single relief
H – Knob adjuster E – External drain same as position 8
K – Micrometer knob with keylock Omit for single relief models.
3 Interface
W – Screw with locknut
5 – ISO 4401-AC-05-4-A, CETOP RP35H
14 Remote control port
ANSI/NFPA D05
8 External drain RC – Remote control port
E – External drain Not available on crossport models.
4 Port operated upon
Omit for internal drain models.
A – “A” cylinder port (single, dual or
15 Gage port & thread type
crossport types)
9 P port acted upon Gage port for P-T models only; optional
B – “B” cylinder port (single type only)
B – “B” cylinder port (dual or crossport remote control (RC) and external drain
P – Pressure port (single type only)
type) Omit for single type. (E) ports as applicable.
Omit for crossport models
5 Port drained into B – G 1/8” (1/8” BSPF)
10 Port drained into
A – “A” cylinder port S – SAE-4 O-ring boss port
A – “A” cylinder port (crossport type (0.4375-20 UNF-2B thread) N
B – “B” cylinder port (crossport type
only) only)
T – Tank port (single or dual types) T – Tank port (dual type only)
16 Design number - 30 series
Subject to change. Installation
11 Pressure range
dimensions unaltered for design
Omit for single type. numbers 30 to 39 inclusive.
A – 4 to 50 bar (60 to 725 psi)
B – 4 to 100 bar (60 to 1450 psi)
F – 4 to 200 bar (60 to 2900 psi)
G – 4 to 315 bar (60 to 4500 psi)

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-5

 Functional Symbols

DGMC2-5- AT-**- BT-**-*-30 DGMC-5- AT-**-*-30 DGMC-5-BT-**- E-*-30

P TB TA B A P TB TA B A P TB TA B A

DR

P TB TA B A P TB TA B A
P TB TA B A

DGMC2-5-AT-**- BT-**RC -*-30 DGMC-5-AT-**-RC -*-30 DGMC-5-BT-**- E-RC -*-30

P TB TA B A P TB TA B A P TB TA B A
DR
RC
RC
RC

RC
P TB TA B A P TB TA B A
P TB TA B A

DGMC2-5-AT-**- E-BT-**- E-*-30 DGMC-5-AT-**- E-*-30 DGMC-5-PT-**-*-30

P TB TA B A P TB TA B A P TB TA B A
G
DR DR

DR
P TB TA B A P TB TA B A
P TB TA B A

DGMC2-5-AT-**-E-BT-**-E-RC -*-30 DGMC-5-AT-**- E-RC -*-30 DGMC-5-PT-**-RC -*-30

P TB TA B A P TB TA B A P TB TA B A
DR DR
G
RC RC
RC

RC
P TB TA B A P TB TA B A
P TB TA B A DR

DGMC2-5-AB-**-BA-**-30 DGMC-5-BT-**-*-30 DGMC-5-PT-**-E-*-30

P TB TA B A P TB TA B A P TB TA B A
G
DR

P TB TA B A P TB TA B A
P TB TA B A

DGMC2-5-AB-**-E-BA-**-E-*-30 DGMC-5-BT-**-RC -*-30 DGMC-5-PT-**-E-RC -*-30

N P TB TA B A P TB TA B A P TB TA B A
DR
G
DR RC
RC

DR
P TB TA B A P TB TA B A P TB TA B A

N-6 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Operating Data

Basic Characteristics

Maximum flow 120 l/min (32 USgpm)

Pilot flow@ 50°C (120°F) and 315 bar (4500 psi) 400–700 ml/min (24 in3/min-43 in3/min)
Maximum operating pressure 315 bar (4500 psi)ar (450 psi)
Pressure overshoot 31 bar (450 psi)
Operating temperature -0° to 80°C (32° to 180°F)
Weights DGMC 2,9 kg (6.5 lbs) DGMC2 3,6 kg (7.9 lbs)
Response time: For conditions of 5 liters (300 in3) of oil under compression and a flow rate of 120 l/min (32 USgpm) typical response is:
Initial pressure Final pressure Response time
17 bar (250 psi) 35 bar (500 psi) 95 ms
35 bar (500 psi) 140 bar (2000 psi) 110 ms
35 bar (500 psi) 315 bar (4500 psi) 150 ms

Performance Data
DGMC-5 and DGMC2-5 Insertion Loss
Insertion Loss
Flow USgpm Total change in pressure drop from through ports “P” “B”,
5 10 15 20 25 30 “A” and “T”caused by the addition of the SystemStak valve
15 to a hydraulic circuit. Insertion loss curves (see top left):
200
1. DGMC2-5-AT-**-(E)-BT-**-(E)-(RC)*-30
DGMC-5-AT-**-(E)-(RC)*-30
150 DGMC-5-BT-**-(E)(RC)-*-30
10
Pressure Drop bar

Pressure Drop psi

2. DGMC-5-PT-**-(E)-(RC)*-30
3 100 3. DGMC2-5-AB-**-BA-**-30
2
5
1 50

DGMC-5 and DGMC2-5 Pressure Override

0 0
20 40 60 80 100 120
The pressure override chart (below) shows typical override of
different adjustment ranges at maximum settings.
Flow l/min

DGMC-5 and DGMC2-5 Vented Pressure (RC models only) Flow USgpm
(Not applicable for crossport models) 5 10 15 20 25 30
Flow USgpm 350 5000
G
5 10 15 20 25 30
20 300

250 4000
250
15
200 F
200 3000
Pressure bar

Pressure psi

N
Pressure bar

150
10
Pressure psi

150
100 2000
Pressure psi

5 B
100
50
1000
A
0 0 50
20 40 60 80 100 120 Override at minimum ( “P”) setting all models
Flow l/min
0 0
The vented pressure chart (above) indicates flow from control 20 40 60 80 100 120
Flow l/min
port to discharge port over relief element.

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-7

 Installation Dimensions

DGMC-5-PT Single Relief

mm (inches) 3rd angle
projection
See page 37 for optional adjustment devices.
See page 38 for interface dimensions.

4 mounting holes
6,90 (0.27) through Remote control port.
9,50 (0.37) counterbore (“ RC” models only)
36,5 (1.44) deep for bolt extenders (order separately) External connection port
BKE-6M-50M (M6 metric) or BKE-4-50M (.2500-20 UNC). thread type (see table)
Torque: 11,3-14,7 Nm
(100-130 lb. in.) 48 “W” models 11,8
(1.89) (max. ext.) (0.46)

50
(1.97) 38
25 (1.5)
(.98)

14 (0.55) 13,5 (0.53) 11,5 4 (5/32”)

(0.45) Hex key
13 (1/2”)
ISO 4401-AC-05-4-A (NFPA D05) Wrench size External drain port.
Mounting surface Plugged for internal drain.
External connection port
thread type (see table)

144,1 (5.67) max.

11,7
50 (0.46)
(1.97)

23 P
(0.91) 33,2
(1.31) 71,6
B A
(2.82)
max.
TB TA
69,5
(2.74)

Gage port. External connection External drain port. External 1,8

port thread type: (see table) connection port thread (see table) (0.46) Adjust clockwise to increase pressure
setting.
N
Note: Back pressure in drain is added to this
External connection port threads
setting for internal drain models only.
“S” models - SAE-4 O-ring boss port
(0.4375-20 UNF-2B thread).
“B” models - G 1/8 (1/8 BSPF)

N-8 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Installation Dimensions

DGMC-5-BT Single Relief

mm (inches)
4 (5/32”) “W” models 4 mounting holes
(max. ext.) 48 (1.89) (See page 8 for
Hex key
specifications)
30
(1.18)
11,5 11,5 50
(0.45) (0.45) (1.97)

15,3 12,5 (0.49) 13 (1/2”) ISO 4401-AC-05-4-A (NFPA D05) 13,5 (0.53)
(0.60) Wrench size Mounting surface
External drain port * Remote control port. *
Plugged for internal drain. (“ RC” models only)
141 (5.55)
11,7 (0.46) 37 (1.46)

P
33,2
71,6 (1.31) B A
(2.82)
max.
* External connection port thread type: TB TA
“S” models - SAE-4 O-ring boss port 69,5
(2.74)
(0.4375-20 UNF-2B thread).
“B” models - G 1/8 (1/8 BSPF)
Adjust pressure“B” port. Adjust clockwise to increase pressure setting.

See page 37 for optional adjustment devices. • Back pressure in drain is added to this setting for
See page 38 for interface dimensions. internal drain models only.

DGMC-5-AT Single Relief

4 mounting holes
(See page 8 for specifications) “W” models 4 (5/32”) Hex key
48 (1.89)
(max. ext.)

50 11,5 11,5
(1.97) (0.45) (0.45)
30
(1.18)

13,5 (0.53) 13 (1/2 ”) 12,5

ISO 4401-AC-05-4-A (NFPA D05) Mounting surface Wrench size (0.49) External drain port *
Adjust pressure “A” port. Adjust clockwise to increase pressure setting. Remote control port *
(“RC ” models only)

141 (5.55)
N
50 (1.97) 11,7 (0.46)

P
33,2
B A (1.31)
71,6
(2.82)
TB TA max.
69,5
(2.74)
15,3 (0.60)

External drain port *. Plugged for internal drain.

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-9

 Installation Dimensions

DGMC2-5-AT-**-BT-**-30
Dual Relief
mm (inches)
See page 37 for optional adjustment devices. 4 mounting holes
6,9 (0.27) through
See page 38 for interface dimensions. 9,50 (0.37) counterbore
36,5 (1.44) deep
for bolt extenders
(order separately)
“W” models 48 BKE-6M-50M (M6 metric) or
(max. ext.) (1.89) BKE-4-50M (.2500-20 UNC).
typ. both ends Torque: 11,3-14,7 Nm 4 (5/32”)
(100-130 lb. in.) Hex key

30 both
(1.18) ends

50
(1.97)

13 (1/2”)
11,5 both 13,5 Wrench size both ends
(0.45) ends (0.53)
* Remote control port. Both ends
ISO 4401-AC-05-4-A (NFPA D05) (“ RC” models only)
Mounting surface

* Remote control port. Both ends

(“ RC” models only)
153,9 (6.06)
11,7 50 12,5 (0.49)
(0.46) (1.97) both ends

P
33,2 33,2
71,6 (1.31) (1.31)
B A
(2.82)
max.
TB TA
69,5
(2.74)

15,3 both
(0.60) ends
External drain port *
(both ends).
Plugged for internal drain.
Adjust pressure “B” port. Adjust
Adjust pressure “A” port. Adjust
N clockwise to increase pressure setting.
clockwise to increase pressure
setting.

* External connection port thread type: • Back pressure in drain is added to this
“S” models - SAE-4 O-ring boss port setting for internal drain models only.
(0.4375-20 UNF-2B thread).
“B” models - G 1/8 (1/8 BSPF) 15 in model code

N-10 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Installation Dimensions

DGMC2-5-AB-**-BA-**-30
Dual Crossport Relief
mm (inches)
4 mounting holes
6,90 (0.27) through.
See page 37 for optional adjustment devices. 9,50 (0.37) counterbore
See page 38 for interface dimensions. 46,5 (1.83) deep
for bolt extenders
(order separately)
BKE-6M-60M (M6 metric) or
BKE-4-60M (.2500-20 UNC).
Torque: 11,3-14,7 Nm 4 (5/32”)
“W” models 45,6 (100-130 lb. in.) Hex key
(max. ext.) (1.71)
typ. both ends

20 60
46 (0.79) (2.36)
40
(1.81) (1.57)

B A
14,0 (0.55) 13 (1/2”)
Wrench size
both ends
ISO 4401-AC-05-4-A (NFPA D05)
Mounting surface

128 (5.04)
11,7 37
(0.46) (1.46)

P
31,3
71,6 (1.23) B A
(2.82) 69,5
max. TB TA (2.74)

External drain (See table)

External drain (See table)
Adjust pressure “A” port. Adjust Adjust pressure “B” port. Adjust
clockwise to increase pressure setting. clockwise to increase pressure setting.

N
External drain port threads
“S” models - SAE-4 O-ring boss port
(0.4375-20 UNF-2B thread).
“B” models - G 1/8 (1/8 BSPF)

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-11

 Installation Dimensions

DGMC-5-AB-**-(E)-*-30
Single Crossport Relief
mm (inches)
4 mounting holes
6,90 (0.27) through.
See page 37 for optional adjustment devices. 9,50 (0.37) counterbore
See page 38 for interface dimensions. 46,5 (1.83) deep
for bolt extenders
(order separately)
BKE-6M-60M (M6 metric) or
BKE-4-60M (.2500-20 UNC).
Torque: 11,3-14,7 Nm
(100-130 lb. in.)

“W” models 45,6 128 (5.04) 10,2 (0.40)

(max. ext.) (1.71)

60
(2.36)
40
(1.57)

B A
20
(0.79)

ISO 4401-AC-05-4-A (NFPA D05)

Mounting surface

DGMC-5-BA-**-(E)-*-30
Single Crossport Relief
mm (inches)
4 mounting holes
(See above for
specifications)

10,2 (0.40) 128 (5.04) 45,6 “W” models

(1.71) (max. ext.)

40
(1.57)
60
(2.36) 40
(1.57)

N
B A

ISO 4401-AC-05-4-A (NFPA D05)

Mounting surface

N-12 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

SystemStak™ Pressure Reducing/Relieving Valves

DGMX2 The valve pressure setting is adjustable by means of either

General Description an adjusting screw containing an internal hex, a hand-adjust
These two-stage spool valves maintain a reduced outlet knob, or a micrometer knob with keylock.
pressure against variations in inlet pressure. Different spring ratings cover an overall pressure range from
These valves are able to act as relief valves (at 50% of 2 to 315 bar (30-4500 psi).
maximum flow) to prevent excess pressure being developed The metering spool element in this design is always
when an actuator is subject to a reactive load. Relief flow is positioned in the “P” line (see symbols on page14). The
directed to the “TB” port. Therefore, for the relief function to operate, connection of the pilot control line determines at which port
all components above this DGMX2 module must contain the “TB” port, and the reduced pressure is obtained. For example:
the directional valve must have the “TB” bypass feature. “PP” pilot for reduced pressure in “P” port
Pilot control may be from the “P”, “A”, or “B” port. Pilot “PA” pilot for reduced pressure in “A” port
drain flow may be directed internally to tank port “TA”, or
externally out of the valve body. “PB” pilot for reduced pressure in “B” port
Any pressure in the line to which these valves are drained is The “A” and “B” line models provide for reduced pressure
additive to the valve pressure setting. when “P” is connected to “A” or “B”. It allows free flow
through the service port when connected to “T” (all via a
four-way directional valve).

Model Code
DGMX2 - 5 - P * - * * - (E) - (RC) - * - 30

1 2 3 4 5 6 7 8 9 10

1 Valve function 5 Pressure range 9 Gage port & thread type

Manifold or subplate mounted reducing/ A – 2,0 to 50 bar (30 to 725 psi) Gage port (all models), external drain (E)
relieving valve. B – 8,5 to 100 bar (125 to 1450 psi) B – G 1/8” (1/8” BSPF)
F – 8,5 to 200 bar (125 to 2900 psi) S – SAE-4 O-ring boss port
G – 8,5 to 315 bar (125 to 4500 psi) (0.4375-20 UNF-2B thread)
2 Interface
5 – ISO 4401-AC-05-4-A, CETOP 5
RP35A size 5 ANSI/NFPA D05 6 Adjustment device 10 Design mumber - 30 series
H – Knob adjuster Subject to change. Installation
K – Micrometer knob with keylock dimensions unaltered for design
3 Port operated upon
W – Screw with locknut numbers 30 to 39 inclusive.
P – Pressure port

7 External drain
4 Pilot control
E – External drain
A – Cylinder port A
Omit for internal drain models. N
B – Cylinder port B
P – Pressure port
8 Remote control
Omit if not required.

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-13

 Functional Symbols

DGMX2-5-PP -**-*-30 DGMX2-5-PA-**-*-30 DGMX2-5-PB -**-*-30

P TB TA B A P TT B TA B A P TB TA B A
G G G

P TB TA B A P TB TA B A P TB TA B A
DGMX2-5-PP -**-E -*-30 DGMX2-5-PA-**-E-30 DGMX2-5-PB -**-E-30
P TB TA B A P TB TA B A P TT B TA B A
G G G

DR DR DR
P TB TA B A P TB TA B A P TB TA B A

DGMX2-5-PP -**-RC -*-30 DGMX2-5-PA-**-RC -*-30 DGMX2-5-PB -**-RC -*-30

P TB TA B A P TT B TA B A P TB TA B A
G RC G G
RC RC

P T B TA B A P TB TA B A P TB TA B A

DGMX2-5-PP -**-E-RC -*-30 DGMX2-5-PA-**-E-RC -30 DGMX2-5-PB -**- E-RC -30

P T B TA B A P TB TA B A P TT B TA B A
G RC G RC G RC

DR DR DR
P T B TA B A P TB TA B A P TB TA B A

DGMX2-5N-PP -**-*-30 DGMX2-5N-PP -**- E-*-30 DGMX2-5N- PA-**-*-30

Y P TB TA B A X Y P T B TA B A X Y P TT B TA B A X
G G G

DR
Y P TB TA B A X Y P T B TA B A X Y P TB TA B A X

N-14 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Operating Data

Basic Characteristics

Maximum flow 120 l/min (32 USgpm)

Pilot flow@ 50°C (120°F) and 315 bar (4500 psi) 290–420 ml/min (18 in3/min-26 in3/min)
Maximum operating pressure “A” models - 70 bar (1000 psi) * (inlet pressure) 50 bar (725 psi)
(reduced pressure) “B”, “F” & “G” models - 315 bar (4500 psi)
Leakage flow rate @ 50° C (120° F) and 315 bar (4500 psi) 80-200 ml/min (15-12 in3/min)
(Leakage to “Tb” around spool land @315 bar (4500 psi) Operating temperature -0° to 80°C (32° to 180°F)
Weights 3,5 kg (7.7 lbs)
* Slightly higher pressure override characteristics between 70 bar (1000 psi) and 315 bar (4500 psi) inlet.

Performance Data
DGMX2 Insertion Lossess DGMX2 Pressure Override
These curves show the typical pressure drop for each flow These curves show the typical roll off or underride of the
path in the valve. The “P” port pressure drop is the pressure different pressure ranges at maximum settings. Also shown
drop for flow across the reducing valve spool in the fully is the typical override of the relieving feature which prevents
open condition. The total insertion loss for the valve must be undesirable pressure rise in the reduced pressure port.
calculated by summing the losses through each of the four
flow paths.
Flow USgpm
Flow USgpm
5 10 15 20 25 30
25 15 10 5 0 5 10 15 20 25 30
350 350 5000

300 300
20 “G ” max. 4000
“P ” port
Pressure Drop bar

Pressure Drop psi

250
250
Pressure bar

Pressure psi
15 200 3000
200
“F ” max.
150
“B” max. 2000
10 150
100
“A” or 100 “A” max.
“B” port 1000
5 50
50 “A” min. “B”, “F ”, “G ” min.
“T ” port
0 0
0 60 40 20 0 20 40 60 80 100 120
0
20 40 60 80 100 120
Flow l/min Relieving mode Reducing mode
Flow l/min
DGMX2 Minimum Reduced Pressure

Flow USgpm
5 10 15 20 25 30
30
400
“B”, “F ” & “G ” models
The curves (left) show the minimum reduced pressure N
20 settings allowable for a given flow rate. The minimum
pressure setting applies regardless of inlet pressure.
Pressure bar

Pressure psi

200 Operation of the valve below minimum settings may cause

erratic valve operation due to insufficient spring force to
10
counter flow forces acting on the spool.

“A” models
0 0
20 40 60 80 100 120
Flow l/min

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-15

 Installation Dimensions

DGMX2-5-PA/PB/PP
Reducing/Relieving Valves 3rd angle
mm (inches) projection

See page 37 for optional adjustment devices.

See page 38 for interface dimensions.

4 mounting holes
6,90 (0.27) through
9,50 (0.37) counterbore
46,5 (1.83) deep for bolt extenders (order separately)
BKE-6M-60M (M6 metric) or BKE-4-60M (.2500-20 UNC). Remote control port.
Torque: 11,3-14,7 Nm (“ RC” models only)
(100-130 lb. in.)
4 (5/32”) 21,8
Gage port “W” models (max. ext.) 48 Hex key (0.86)
(See table) (1.89)

60
50 (2.36)
(1.97) 48
30 (1.89)
(1.18) 11,5
(0.45)
External drain port.
13,5 13 (1/2”) Plugged for internal 20,4
(0.53) Wrench size drain.(see table) (0.80)
ISO 4401-AC-05-4-A (NFPA D05)
Mounting surface

131 (5.16)

128 (5.04)
11,7
37 (0.46)
(1.46)

P
Gage port
(See table)
71,6
B A
(2.82)
28,4 max.
TB TA (1.12)
41,6 69,5
(1.64) (2.74)

Adjust clockwise to increase

pressure setting.
Note: Back pressure in drain
is added to this setting for
internal drain models only.
N External connection port threads
“S” models - SAE-4 O-ring boss port
(0.4375-20 UNF-2B thread).
“B” models - G 1/8 (1/8 BSPF)

N-16 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

SystemStak™ Internal Pilot Operated Sequence Valves

DGMR1 Any pressure in the line to which these valves are drained is
General Description additive to the valve pressure setting.
These two-stage pressure operated valves are normally The valve pressure setting is adjustable by means of either
closed to flow through the main spool flow path. When an adjustable screw containing an internal hex, a hand-adjust
system pressure reaches or exceeds the valve setting, the knob, or a micrometer knob with keylock. Different spring
main spool flow path opens. Pilot flow may be externally or ratings cover an overall pressure range from 5 to 315 bar
internally drained to tank. (75-4500 psi).

Model Code
DGMR1 - 5 - P P - * * - (E) - * - 30

1 2 3 4 5 6 7 8 9

1 Valve function 4 Pilot control 7 External drain

Manifold or subplate mounted P – Pressure port E – External drain
sequence valve. Omit for internal drain models.
5 Pressure range
2 Interface A – 5 to 50 bar (75 to 725 psi) 8 Gage port & thread type
5 – ISO 4401-AC-05-4-A, CETOP RP35H B – 5 to 100 bar (75 to 1450 psi) Gage port (all models), external drain (E)
Size 5 ANSI/NFPA D05 F – 5 to 200 bar (75 to 2900 psi) (optional).
G – 5 to 315 bar (75 to 4500 psi) B – G 1/8” (1/8” BSPF)
S – SAE-4 O-ring boss port
3 Port operated upon
(0.4375-20 UNF-2B thread)
P – Pressure port 6 Adjustment device
H – Knob adjuster
K – Micrometer knob with keylock 9 Design mumber - 30 series
W – Screw with locknut Subject to change. Installation
dimensions unaltered for design
numbers 30 to 39 inclusive.

Functional Symbols
DGMR1-5-PP -**-*-30 DGMR1-5-PP -**-E-*-30
P T B TA B A P T B TA B A

G
N
G DR
P T B TA B A P T B TA B A

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-17

 Operating Data

Basic Characteristics

Maximum flow 120 l/min (32 USgpm)

Pilot flow@ 50°C (120°F) and 315 bar (4500 psi) 400-500 ml/min (24-31 in3/min)
Maximum operating pressure “A” models - 70 bar (1000 psi) * (inlet pressure) 50 bar (725 psi)
(reduced pressure) “B”, “F” & “G” models - 315 bar (4500 psi)
Leakage flow rate @ 50° C (120° F) and 315 bar (4500 psi) 80-200 ml/min (15-12 in3/min)
Operating temperature -0° to 80°C (32° to 180°F)
Weights 3,5 kg (7.7 lbs)

Performance Data
Insertion Losses Pressure Override
These curves show the typical pressure drop for each flow Typical pressure override of the different pressure ranges at
path in the valve. The “P” port pressure drop is the pressure minimum and maximum settings.
drop for flow across the sequence valve spool in the fully
open position.
The total insertion loss for the valve must be calculated by
summing the losses through each of the four flow paths.

Flow USgpm Flow USgpm

5 10 15 20 25 30 5 10 15 20 25 30
25 350 350 5000

300
300 “G ” max.
20 4000
Pressure Drop bar

250
250
Pressure Drop psid

15 200 3000
Pressure bar

Pressure psi
200 “F” max.
“P” port*
150
10 150 “B” max. 2000

100 100
“A” or “B” port “A” max.
5 1000
50 50
“T” port Minimum setting
(all models)
0 0 0 0
20 40 60 80 100 120 20 40 60 80 100 120
Flow l/min
N Flow l/min

*Spool held in open position

N-18 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Installation Dimensions

DGMR1-5-PP-**-30
Sequence Valve 3rd angle
mm (inches) projection

See page 37 for optional adjustment devices. 4 mounting holes

See page 38 for interface dimensions. 6,9 (0.27) through
9,50 (0.37) counterbore
46,5 (1.83) deep
for bolt extenders
(order separately)
BKE-6M-60M (M6 metric) or
BKE-4-60M (.2500-20 UNC).
Torque: 11,3-14,7 Nm
(100-130 lb. in.)
48 “W” models (max. ext.)
(1.89)

Hex key 4 (5/32”)

60
(2.36)
30,5
(1.20)

10 13,5 11,5
(0.39) (0.53) (0.45)

ISO 4401-AC-05-4-A (NFPA D05) 13 (1/2”) Wrench size

Mounting surface
* Gage port. External
connection port thread

130
(5.12)
128
(5.04) 11,7
37 (0.46)
(1.46)
* Gage port. External
P
connection port thread
71,6
B A
(2.82)
28,4 max.
TB TA (1.12)
69,5
20,4 (2.74)
(0.80)

*External drain port. Plugged for internal drain Adjust clockwise to increase
pressure setting.
N
Note: Back pressure in drain
is added to this setting for
*External drain and gage port threads
internal drain models only.
“S” models - SAE-4 O-ring boss port
(0.4375-20 UNF-2B thread).
“B” models - G 1/8 (1/8 BSPF)

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-19

 SystemStak™ Counterbalance Valves

DGMR Pilot pressure Calculation

General Description
To open the counterbalance valve by remote control (referring
Eaton SystemStak counterbalance valves provide continuous to functional symbols below):
protection from pump cavitation and prevent an actuator from
running ahead of the pump supply.
For 4:1 ratio (typically for cylinder load control),
These valves also provide thermal relief protection in closed
nominal pilot pressure at Port B =
systems.
Cracking pressure + (5 x Port A1 pressure) – Port A pressure
NOTE
4
Counterbalance valves adjust in the opposite direction of other pressure
control valves. Turning the adjuster counterclockwise increases the valve
setting. Turning the adjustment clockwise lowers the pressure setting, For 10:1 ratio (typically for hydraulic motor control),
releasing the load. nominal pilot pressure at Port B =

Drain
Cracking pressure + (11 x Port A1 pressure) – Port A pressure
10
Any pressure in the line to which these valves are drained is
additive to the valve pressure setting.

Model Code
DGMR - 5 - * * - F * - B * - F * - 30

1 2 3 4 5 6 7 8 9 10 11

1 Valve function 5 Pressure range 9 Pressure range

Manifold or subplate mounted F – 60 to 210 bar (900 to 3000 psi) (Omit for single type.)
counterbalance valve. F – 60 to 210 bar (900 to 3000 psi)

6 Adjustment device
2 Interface 10 Adjustment device
H – Knob adjuster
5 – ISO 4401-AC-05-4-A, CETOP 5 C – Cap over screw (Omit for single type.)
RP35H, Size 5 ANSI/NFPA D05 W – Screw with locknut H – Knob adjuster
C – Cap over screw
W – Screw with locknut
3 Port operated upon 7 Port acted upon
A – Counterbalance in A, piloted from B (Omit for single type.)
B – Counterbalance in B, piloted from A B – Counterbalance in B, piloted from A 11 Design mumber - 30 series
Subject to change. Installation
4 Pilot ratio dimensions unaltered for design
8 Pilot ratio
numbers 30 to 39 inclusive.
1 – 4:1 (Omit for single type.)
2 – 10:1 1 – 4:1
N 2 – 10:1

Functional Symbols
DGMR-5-A*-FW-B*-FW-30 DGMR-5-A*-FW-30 DGMR-5-B*-FW-30
P T B1 A1 P T B A1 P T B1 A

P T B A P T B A P T B A

N-20 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Operating Data

Basic Characteristics

Maximum flow 120 l/min (32 USgpm)

Load holding leakage @70% of pressure setting 0.35 ml/min.
Cracking Pressure Adjustment Range 60-210 bar (900-3000 psi)
Pilot Ratios 4:1, 10:1
Maximum operating pressure 315 bar (4500 psi)
Leakage flow rate @ 50° C (120° F) and 315 bar (4500 psi) 5 drops/min, Port A to Port A1 at 70% of crack setting
Operating temperature -40° to 80°C (-40° to 180°F)
Weights 4,5 kg (10 lbs)

Performance Data
DGMR Performance Curves 1. “P” port for all models.
Insertion Losses “A” port of DGMR-5-B*-30
These curves show the typical pressure drop for each flow “B” port of DGMR-5-A*-30
path in the valve for fluid viscosity range 21-32 cSt 2. “T” port for all models.
(100-150 SSU). 3. Free flow through service port of counterbalance.
The total insertion loss for the valve is calculated by summing 4. Piloted port open through service port of counterbalance.
the losses through each of the four flow paths.

Flow USgpm Flow USgpm

5 10 15 20 25 30 5 10 15 20 25 30
4 60

50 750
50

3
40
40 600

Pressure Drop psid

Pressure Drop psid
Pressure Drop bar

Pressure Drop bar

4
2 30 450
30

2
1
20 300
20
1

10 10 150
3

0 0 0 0
20 40 60 80 100 120 20 40 60 80 100 120
Flow l/min Flow l/min
N

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-21

 Installation Dimensions

DGMR-5-A*-FW-B*-FW-30
Dual Counterbalance on A & B Ports 3rd angle
mm (inches) projection

See page 37 for optional adjustment devices.

See page 38 for interface dimensions.

4 mounting holes
6,90 (0.27) through
9,50 (0.37) counterbore
46,5 (1.83) deep for bolt extenders (order separately)
BKE-6M-60M (M6 metric) or BKE-4-60M (.2500-20 UNC).
Torque: 11,3-14,7 Nm
65,6 (100-130 lb. in.)
(2.58)
“W” models
(max. ext.) Hex key
both ends 4 (5/32”)

60
(2.36)

21,5
(0.85)

13 (1/2”)
13,5 Wrench size
ISO 4401-AC-05-4-A (NFPA D05) (0.53)
Mounting surface

155,5
(6.12)
11,7 50
(0.46) (1.97)

33,2
(1.31)
71,6
(2.82)
69,5
(2.74)

Adjust counterclockwise to increase

pressure setting.
N

N-22 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Installation Dimensions

DGMR-5-A*-FW-30
Counterbalance Port A, Piloted from B
mm (inches) ISO 4401-AC-05-4-A (NFPA D05)
Mounting surface
4 mounting holes 65,6
(see page 22) (2.58)
“W” models
(max. ext.)
4 (5/32”)
Hex key
60
(2.36)

21,5
(0.85)

13 (1/2”)
Wrench size
11,7 142,6 (5.61)
50
(0.46)
(1.97)

33,2
(1.31) 71,6
(2.82)
Adjust counterclockwise to
increase pressure setting.
69,5
(2.74)

See page 37 for optional adjustment devices.

See page 38 for interface dimensions.

DGMR-5-B*-FW-30
Counterbalance Port B, Piloted from A

4 mounting holes
65,6 (see page 23)
(2.58)
4 (5/32 ”) “W” models
Hex key (max. ext.)

60
(2.36)

21,5
(0.85)

ISO 4401-AC-05-4-A (NFPA D05)

13 (1/2”) Mounting surface
Wrench size
142,6 (5.61) 11,7
37 (1.46) (0.46)
N

33,2
71,6 (1.31)
Adjust counterclockwise to (2.82)
increase pressure setting.
69,5
(2.74)

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-23

 SystemStak™ Flow Control Valves

DGMFN The “P” port is available only in the “X” type (meter-in) and
General Description does not contain a reverse flow check.
These valves are adjustable, non-compensated flow The valve flow setting is adjustable by means of either a hex
restrictors. An integral check valve around the regulating key adjusting screw and locknut, a hand-adjust knob, or a
orifice allows free flow in one direction and metered flow in micrometer knob with keylock.
the other. A normal or fine metering capability is available. See the
Control is available in “A” only, “B” only, and “A” and “B” pressure drop curves on page 26 for detailed performance
ports as an “X” type (meter–in) or “Y” type (meter-out). difference.

Model Code
DGMFN - 5 - * - * * * - B * * - 30

1 2 3 4 5 6 7 8 9 10

1 Valve function 4 Port operated upon 8 Adjustment range:

second function
Manifold or subplate mounted flow A – Cylinder port “A” (single or dual
control valve. type) (Omit for single flow control models.)
B – Cylinder port “B” (single type only) 1 – Fine control
P – Pressure port (single type only) 2 – Normal control
2 Interface
5 – ISO 4401-AC-05-4-A, CETOP 5 Size
5 RP35H ANSI/NFPA D05 5 Adjustment range 9 Adjustment device:
second function
1 – Fine control
2 – Normal control (Omit for single flow control models.)
3 Direction of flow H – Knob adjuster
X – Meter-in K – Micrometer knob with keylock
Y – Meter-out 6 Adjustment device W – Screw with locknut
H – Knob adjuster
K – Micrometer knob with keylock
10 Design number - 30 series
W – Screw with locknut
Subject to change. Installation
dimensions unaltered for design
7 Port operated upon: numbers 30 to 39 inclusive.
second function
(Omit for single flow control models.)
B – B cylinder port (Dual type)

N DGMFN-5-X-P**-30 DGMFN-5-X-A**-B**-30 DGMFN-5-X-A**-30 DGMFN-5-X-B**-30

P T B A P T B A P T B A P T B A

P T B A P T B A P T B A P T B A

DGMFN-5-Y-A**-B**-30 DGMFN-5-Y-A**-30 DGMFN-5-Y-B**-30

P T B A P T B A P T B A

P T B A P T B A P T B A

N-24 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Operating Data

Basic Characteristics

Maximum flow 120 l/min (32 USgpm)

Maximum operating pressure 315 bar (4500 psi)
Operating temperature 20° to 50°C (70° to 120°F)
Weights 3,1 kg (7 lbs)

Performance Data
Minimum Controlled Flow/No-Flow Leakage Pressure Drop
Internal leakage will vary from valve to valve and with the The curves below show the pressure drop through individual
pressure differential across the check. Approximate levels flow passages. Curves labeled “metered flow/pressure
are: drop” refer to the pressure drop through only the passage
Pressure Drop Leakage* containing the flow control regulating orifice. Total valve
bar (psi) cc/min (in3/min) insertion loss is a value derived from graph 1 or 2 plus the
50 (725) 160 (9.5) appropriate values of lines 1, 2 and 3 from graph 3.
100 (1450) 320 (19)
200 (2900) 640 (38)
315 (4500) 990 (60)
* Equals minimum controllable flow rate at the pressures stated.

Graph 1 Graph 2 Graph 3

Metered flow pressure drop. Metered flow pressure drop. Free flow pressure drop across
Normal adjustment – “2” Fine adjustment – “1” models check valve.
models (see model code, (see model code, page 24).
page 24).
Flow USgpm Flow USgpm Flow USgpm
5 10 15 20 25 30 5 10 15 20 25 30 10 20 30
350 5000 350 5000 12
1 turn 160
1 1/2 turns

300 300 10
1/2 turn

140
2 turns
1/2 turn

4 turns
3 turns
2 turns

4000 4000
1 turn

Pressure Drop psi

3
Pressure Drop bar
Pressure Drop bar

Pressure Drop psi

250 250 8 120

Pressure Drop psi

Pressure Drop bar

100
3000 3000
200 200 6
80
150 150 4 60
2000 2000
7 turns 40
100 4 turns 100 2 2
8 turns 20
1000 1000 1 0
50 6 turns 50 0
8 turns 9 turns 40 80 120
10 turns Flow l/min
0 0 0 0
20 40 60 80 100 120 20 40 60 80 100 120
Graph 3 N
Flow l/min Flow l/min
1 – “P” port of all models except
Note: “Turn” or “Turns” on curves in graphs 1 and 2, above, refer to turn of DGMFN-5-X-P**-30
adjustment device from fully closed position. “B” and “T” ports of
DGMFN-5-X-P**-30
2 – “T” port of all models except
DGMFN-5-X-P**-30
“A” ports of
DGMFN-5-X-P**-30
3 – Pressure drop across reverse
free flow check valve

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-25

 Installation Dimensions

DGMFN-5-X-P & DGMFN-5-Y-A

Single Flow Controls 3rd angle
mm (inches) projection

4 mounting holes 6,9 (0.27) through

9,50 (0.37) counterbore 36,5 (1.44) deep
for bolt extenders (order separately) A
BKE-6M-50M (M6 metric) or ISO 4401-AC-05-4-A “W” models
BKE-4-50M (.2500-20 UNC). (NFPA D05) (max. ext.) 4 (5/32 ”)
Torque: 11,3-14,7 Nm (100-130 lb. in.) Mounting surface Hex key

Model A B

DGMFN-5-X-P 60,4 (2.38) 28,4 (1.12) 50

13,5
DGMFN-5-Y-A 52,7 (2.07) 33,2 (1.31) (0.53) (1.97)
30
(1.18)

No hex plug on
DGMFN-5-X-P
models 139 (5.47)
11,7 128 (5.04) 13 (1/2”)
(0.46) 37 Wrench size
(1.46)
P

B
B A
71,6 69,5
(2.82) (2.74)
TB TA
max.

Rotate clockwise
to decrease flow

See page 37 for optional adjustment devices.

See page 38 for interface dimensions.
DGMFN-5-X-A
Single Flow Control
mm (inches)
52,7
ISO 4401-AC-05-4-A (2.07)
4 mounting holes (NFPA D05) “W” models 4 (5/32 ”)
(See above for (max. ext.) Hex key
Mounting surface
specifications)

13,5 20 50
(0.53) (0.79) (1.97)

N 139 (5.47)
11,7 128 (5.04) 13 (1/2”)
(0.46) 37 Wrench size
(1.46)
P
33,2
B A (1.31)
71,6
(2.82) 69,5
max. TB TA (2.74)

Rotate clockwise
to decrease flow

N-26 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Installation Dimensions

DGMFN-5-X-B
Single Flow Control
mm (inches)
“W” models 4 mounting holes ISO 4401-AC-05-4-A (NFPA D05)
52,7
(max. ext.) (See page 27 for Mounting surface
(2.07)
specifications)

4 (5/32”) Hex key

Rotate clockwise to
decrease flow 13,5
50 (0.53)
(1.97) 20
(0.79)

139 (5.47)
13 (1/2”) 128 (5.04) 11,7
Wrench size 37 (0.46)
(1.46)
P
33,2
(1.31) B A
69,5 71,6
(2.74) (2.82)
TB TA max.

See page 37 for optional adjustment devices.

See page 38 for interface dimensions.

DGMFN-5-Y-B
Single Flow Control

“W” models (max. ext.) 52,7

(2.07) 4 mounting holes
(See page 27 for ISO 4401-AC-05-4-A (NFPA D05)
4 (5/32”) Hex key specifications) Mounting surface
Rotate clockwise to
decrease flow

50
(1.97) 13,5
30 (0.53)
(1.18)

139 (5.47)
128 (5.04) 11,7 N
13 (1/2”) 37 (0.46)
Wrench size
(1.46)
P
33,2
(1.31) B A
69,5 71,6
(2.74) (2.82)
TB TA max.

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-27

 Installation Dimensions

DGMFN-5-Y Dual Flow Control

mm (inches)

4 mounting holes (See page 27

52,7 for specifications)
“W” models (max. ext.)
typ. both ends (2.07) ISO 4401-AC-05-4-A (NFPA D05)
Mounting surface
4 (5/32 ”) Hex key Rotate clockwise to
Rotate clockwise to decrease flow in
decrease flow in port “A”
port “B”
50
(1.97)
30 13,5
(1.18) (0.53)

13 (1/2 ”) 128 (5.04) 11,7

Wrench size 37 (0.46)
both ends (1.46)
P
33,2
(1.31) B A
69,5 71,6
(2.74) (2.82)
TB TA max.

See page 37 for optional adjustment devices.

See page 38 for interface dimensions.

DGMFN-5-X Dual Flow Control

mm (inches)

4 mounting holes (See page 27

52,7 for specifications)
“W” models (max. ext.)
(2.07) ISO 4401-AC-05-4-A (NFPA D05)
typ. both ends
Mounting surface
4 (5/32 ”) Hex key
Rotate clockwise to
decrease flow in Rotate clockwise to
port “B” decrease flow in
50 port “A”
(1.97)
13,5
(0.53)
20
(0.79)
N
13 (1/2”) 128 (5.04) 11,7
Wrench size 37 (0.46)
both ends (1.46)
P
33,2
(1.31) B A
69,5 71,6
(2.74) (2.82)
TB TA max.

N-28 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

SystemStak™ Pilot Operated Check Valves

DGMPC
General Description
These valves are single or dual check units. Dual check units To open valve or poppet in line A:
have identical check elements located in the “A” and “B” PA + PC - PA1
cylinder port lines. The check valve poppets are moved into Pressure at B1 = + PA1
Area ratio factor
the open position by a central pilot control spool which moves
toward one check or the other, depending on which port is To open valve or poppet in line B:
pressurized.
PB + PC - PB1
The check valve located in the return circuit is opened by the Pressure at A1 = + PB1
Area ratio factor
operating pressure in the primary circuit. When the pressure Where:
in the pilot line is vented, the check valve will remain closed.
PA = Pressure at A
The pilot spool area to valve seat ratio is 3:1 on standard
models, and 20:1 on models with the decompression feature. PC = Cracking pressure
Check valve cracking (opening) pressures of 1 bar (15 psi), PA1 = Pressure at A1
2,5 bar (36 psi) and 5 bar (73 psi) are available. Please note PB = Pressure at B
that back pressure on the downstream or free-flow side of
PB1 = Pressure at B1
the pilot check valve may prevent the valve from opening
in certain situations. (Back pressure opposes pilot pressure In the above cases, substitute cracking pressure and area
trying to open the valve.) In such cases, pilot pressure ratio from the following:
required to open the decompression poppet and valve can be Cracking pressure: 1, 2.5 or 5 bar according to model code
calculated as follows: position 6 (and position 10 for second function).
Area ratio factors:
Standard valve: 3
Decompression poppet: 20

Model Code
DGMPC - 5 - (D) - * * * - D B A * - 30

1 2 3 4 5 6 7 8 9 10 11

1 Valve function 5 Pilot port 9 Pilot port: second function

Manifold or subplate mounted check A – Pilot port controlling the “B” port A – Pilot port controlling the “B” port
valve. check (single check models only) check (dual check models only)
B – Pilot port controlling the “A” port Omit for single check models.
check
2 Interface
5 – ISO 4401-AC-05-4-A, CETOP 10 Cracking pressure:
RP35H, Size 5 ANSI/NFPA D05 6 Cracking pressure second function
K – 1,0 bar (15 psi) K – 1,0 bar (15 psi)
M – 2,5 bar (35 psi) M – 2,5 bar (35 psi)
3 Decompression feature
N – 5,0 bar (75 psi) N – 5,0 bar (75 psi)
D – With decompression feature Omit for single check models. N
Blank – Standard (no decompression)
7 Decompression feature
11 Design number - 30 series
4 Check port D – Decompression feature
Blank – Standard (no decompression) Subject to change. Installation
A – Check in cylinder port “A”
Omit for single check models. dimensions unaltered for design
B – Check in cylinder port “B”
numbers 30 to 39 inclusive.
(single check models only)
8 Check port: second function
B – Check in cylinder port “B”
Omit for single check models.

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-29

 Functional Symbols

DGMPC-5-AB*-30 DGMPC-5-BA*-30 DGMPC-5-AB*-BA*-30

P T B1 A1 P T B1 A1 P T B1 A1

P T B A P T B A P T B A

Operating Data
Basic Characteristics

Maximum flow 120 l/min (32 USgpm)

Maximum operating pressure 315 bar (4500 psi)
Leakage @ 50°C (120°F) Poppet @ 35 bar (500 psi)
Standard models 0.3 ml/min.
“D” models 1.0 ml/min.
Piston @315 bar (4500 psi) 20°C to 50°C (70to 120°F)
Operating temperature 20°C to 50°C (70° to 120°F)
Weights 2,9 kg (6.4 lbs)

Performance Data
DGMPC Pressure Drop Flow USgpm
The curves below show pressure drop through each 5 10 15 20 25 30
24
functional flow path in the valve. The total insertion loss for
the valve must be calculated by summing the losses through 22
N
the four applicable flow paths. 300
20
18
Model Type Curve Number 250
16
P T A B
Pressure drop bar

Pressure drop psi

14
200
12
DGMPC-5-(D)-AB*-30 1 2 - 5  •3 - - 10 150
4
8
DGMPC-5-(D)-BA*-30 1 2 •3 - - - 5  4 100
4 6
M 5
DGMPC-5-(D)-AB*-(D)-BA*-30 1 2 - 5  - 5  3
4
K 2 50
• Flow toward actuator without check – single check only 2
 Flow from actuator without check – single check only 1
0 0
 Use K, M, or N cracking pressure curve as applicable 20 40 60 80 100 120
Flow l/min
N

N-30 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Installation Dimensions

DGMPC-5-30
Pilot Operated Check Valve
mm (inches)

See page 38 for interface dimensions. 4 mounting holes

6,9 (0.27) through
9,50 (0.37) counterbore
36,5 (1.44) deep
for bolt extenders
(order separately)
BKE-6M-50M (M6 metric) or
BKE-4-50M (.2500-20 UNC) 9,9
Torque: 11,3-14,7 Nm (0.39)
(100-130 lb. in.)

50
(1.97)
30
(1.18)

9,9
(0.39) 13,5
(0.53)
ISO 4401-AC-05-4-A (NFPA D05)
Mounting surface

128 (5.04)
11,7 37
(0.46) (1.46)

P
33,2
(1.31) B A
71,6
(2.82) 69,5
max. TB TA (2.74)

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-31

 SystemStak™ Direct Check Valves

DGMDC A check in the “T” port is available as an “X” single check

General Description model only.
These SystemStak valves are self-operating, spring loaded, The dual check unit has identical check elements in both the
poppet type single or dual check units. “A” and “B” ports.
Location of the check element can be in the “A”, “B”, “P” or Check valve cracking (opening) pressures of 1 bar (15 psi), 2,5
“T” port. bar (35 psi) and 5 bar (75 psi) are available.
A check in the “P” port is available as a “Y” single check
model only.

Model Code
DGMDC - 5 - * - * * - (B) (*) - 30

1 2 3 4 5 6 7 8

1 Valve function 4 Check location 6 Check location: second function

Manifold or subplate mounted check A – Check in cylinder port “A” Omit for single check models.
valve. (“Y” models only) B – Check in cylinder port “B”
B – Check in cylinder port “B” (dual check models only)
(“Y” models only)
2 Interface
P – Check in pressure port “P”
5 – ISO 4401-AC-05-4-A, CETOP 7 Cracking pressure:
(“Y” models only)
RP35H, Size 5 ANSI/NFPA D05 second function
T – Check in tank port “TA”
Omit for single check models.
(“X” models only)
K – 1,0 bar (15 psi)
3 Direction of flow
M – 2,5 bar (35 psi)
X – Free flow from actuator (load) 5 Cracking pressure N – 5,0 bar (75 psi)
Y – Free flow to actuator (load)
K – 1,0 bar (15 psi)
M – 2,5 bar (35 psi)
8 Design number - 30 series
N – 5,0 bar (75 psi)
Subject to change. Installation
dimensions unaltered for design
numbers 30 to 39 inclusive.

DGMDC-5-Y-P*-30 DGMDC-5-Y-B*-30 DGMDC-5-X-T*-30

P TB TA A B P TB TA A B P TB TA A B

N P TB TA B A P TB TA B A P TB TA B A

DGMDC-5-Y-A*-B*-30 DGMDC-5-Y-A*-30
P TB TA A B P TB TA A B

P TB TA B A P TB TA B A

N-32 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Operating Data

Basic Characteristics

Maximum flow 120 l/min (32 USgpm)

Maximum operating pressure 315 bar (4500 psi)
Leakage @ 50°C (120°F) Poppet @ 35 bar (500 psi) 0.3 ml/min.
Operating temperature 20°C to 50°C (70° to 120°F)
Weights 2,9 kg (6.4 lbs)

Performance Data
Pressure Drop
These curves show pressure drop though each possible
flow path in the valve. The total insertion loss for the valve
must be calculated by summing the losses through the four
applicable flow paths.

Model Type Curve Reference for Flow Path Graph Number

P T A B
DGMDC-5-Y-PK-30 K
DGMDC-5-Y-PM-30 M T A B 1
DGMDC-5-Y-PN-30 N
DGMDC-5-X-TK-30 K
DGMDC-5-X-TM-30 P M A B 2
DGMDC-5-X-TN-30 N
DGMDC-5-Y-AK-30 K •1
DGMDC-5-Y-AM-30 P T M
DGMDC-5-Y-AN-30 N 2
DGMDC-5-Y-BK-30 •1 K 3
DGMDC-5-Y-BM-30 P T M
DGMDC-5-Y-BN-30 2 N
DGMDC-5-Y-A*-B*-30 P T  

• Flow to actuator through cylinder port without check

 Flow from actuator through cylinder port without check
 Use K, M, or N curve from graph 3, as applicable

Graph 1 Graph 2 Graph 3

Flow USgpm Flow USgpm Flow USgpm
5 10 15 20 25 30 5 10 15 20 25 30 5 10 15 20 25 30
25 30 25
350 350
400
“N” “N” “N”
300 25 300
20 350 20
Pressure Drop psi

“M” “M”
250 “M” 250
300
Pressure Drop bar

Pressure Drop psi

20
Pressure Drop bar

15 15
N
Pressure Drop psi

“K”
Pressure Drop bar

200 “K” 200

250 “K”
“2 ”
150 15 150
10 200 10
“T”
100 100
“A” 10 150 “1”
5 5 “T ”
“B” 50 50
100 “P”
“P”
0 0 5 “A” 0 0
20 40 60 80 100 120 50 20 40 60 80 100 120
“B”
Flow l/min 0 0 Flow l/min
20 40 60 80 100 120
Flow l/min

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-33

 Installation Dimensions

DGMDC-5-Y-A*-B*-30
Dual Direct Check Valve
mm (inches)
4 mounting holes 0 6,9 (0.27) through
0 9,50 (0.37) counterbore 36,5 (1.44) deep
for bolt extenders (order separately)
BKE-6M-50M (M6 metric) or
BKE-4-50M (.2500-20 UNC).
Torque: 11,3-14,7 Nm (100-130 lb. in.) 9,9 (0.39)
(max.)

50
(1.97)
13,5 30
(0.53) (1.18)

9,9 (0.39) ISO 4401-AC-05-4-A (NFPA D05)

Mounting surface

11,7 128 (5.04)

(0.46) 37
(1.46)

P
33,2
(1.31) B A
71,6
(2.82) 69,5
max. TB TA (2.76)

See page 38 for interface dimensions.

DGMDC-5-Y-P*-30 DGMDC-5-X-T*-30
Single Direct Check Valve Single Direct Check Valve

4 mounting holes
4 mounting holes 9,9 (0.39) (See above for 9,9 (0.39)
(See above for (max.) specifications) (max.)
specifications)

N
50 50
(1.97) (1.97)
13,5 13,5 30
(0.53) (0.53) (1.18)

ISO 4401-AC-05-4-A ISO 4401-AC-05-4-A (NFPA D05)

17
(NFPA D05) Mounting surface
(.669)
Mounting surface

N-34 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Knob Adjusters

DGMC “H” models “K” models 45

56,8 (2.24) 82,9 (3.26)
DGMC2 (dual type) (max. ext.) max. ext. (1.77)
DGMR1 For key
removal
DGMX2

2 (5/64”)
Hex key required
for adjustment
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 setting mechanism.

DGMC2
(crossport type) “H” models 45
54,1 (2.13) “K” models 80,1 (3.15)
(max. ext.) max. ext. (1.77)
For key
removal

2 (5/64”)
Hex key required
for adjustment
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 setting mechanism.

DGMFN
C “H” models “K” models D 45
(max. ext.) max. ext. (1.77)
For key
removal

2 (5/64”)
Hex key
required for
adjustment

Model C D Adjustment of valve setting is only possible while key is

DGMFN-5-X-P 68,9 (2.37) 95 (3.74) inserted and turned to engage driving pin. When key is
DGMFN-5-Y-A 61,9 (2.44) 88 (3.46) removed, adjuster knob can be freely spun and does not
engage with setting mechanism.

DGMR
H – Handknob W – Screw with locknut C – Cap over screw N
74,4 (2.93) 65,6 (2.58) 68,5 (2.70)

4 (5/32)
2 (5/64”) Hex key
Hex key required 13 (1/2”)
13 (1/2”) Wrench size
for adjustment
Wrench size

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-35

 Mounting Surface

Dimensions mm (inches)

DGM**-5
The “5” interface accepts Ea-
ton DG4S4 directional valves
and other directional valves
with a standard ISO 4401-05,
NFPA-D05, ANSI/B93.7M
size D05 or CETOP-5 port
pattern.

N-36 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Bolt Extender Kits

ISO 4401-05 SystemStak valves may be mounted with either The use of Eaton bolt extenders simplifies installation by
standard cap screws or bolt extender kits. permitting each valve body to be separately installed with the
Metric cap screws must be of Class 12,9 (ISO 898) strength, correct torque value. A major advantage of bolt extenders
minimum U.T.S. = 1200 MPa. is the ability to remove the directional valve for service or
replacement without disturbing the stack assembly. There are
Inch threaded screws must conform to ANSI B18.3. 4 bolt extenders per kit.

SystemStak
Valve Height Metric Inch Extender Torque

mm (inch) Thread Kit Model Number Thread Kit Model Number

50 (1.97) M6 x 1-6H BKE-6M-50M .2500-20 UNC BKE-4-50M 11,3-14,7 Nm (100-130 lbf in)
60 (2.36) M6 x 1-6H BKE-6M-60M .2500-20 UNC BKE-4-60M

Bolt extender cross section Example of bolt extenders on a typical SystemStak assembly

Bolt Extender

Directional
Valve
4,0 ( 5 /32” ) hex
socket for
Standard
tightening
socket head
M6 x 1 or cap screw
.2500-20 thread
4 ( 5 /32” )
hex
socket
60
(2.36)
SystemStak Valve Bolt extender
kit
BKE-6M-60M or
BKE-4-60M

4 ( 5 /32” )
hex
socket
50
(1.97) Bolt extender
SystemStak Valve kit
BKE-6M-50M or
BKE-4-50M

Manifold Block

12 (0.47) minimum
thread engagement

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-37

 Subplates & Blanking Plate

Valves, subplates and blanking plates must be ordered

separately.

DGSM(E) Subplate
(rated at 210 bar (3000 psi)
Millimeters (inches)
10,3 (.41) D. Thru
50,8 (2.00)
20,6 (.81) D. Spotface
11,9 (.47) R “P ” Pressure Conn.* 4 holes for mounting
39,6
(1.56) 10,4 (.41)
.438 Dia. System ports 28,5 (1.12)
10,4 (.41) 4 holes 5,6 (.22)
6,35 (.25)
23,9 (.94) “B” Cyl. Conn.* 15,8 (.62) 5,6 (.22)

15 (.59) 68,3 114,3

(2.69) (4.50)
P
92
(3.62)
26,16 46 43,7 B T
(1.03) (1.8) (1.72)

B
47,8 A
37,3* (1.88)
(1.47)

11,2 23,1 (.91)

R
(.44)
12,7 (.50) 23,1 (.91) 101,6 (4.00)
54 18,3* (.72)
(2.12) 20,6 (.81)
79,4 23,9 (.94)
33,02 (1.30) (3.12) “E” Thd. 4 holes
A System connections.
“TA ” Tank Conn. *
“A” Cyl. Conn.*
.2500-20 UNC-2B Thd.
4-holes for mounting

Model Numbers “E” Thread Tube Size Dimension “A”

DGSM-01-20-T8 .750-16 UNF-2B 1
⁄2” O.D. 31,75 (1.25)
DGSME-01-20-T8 .750-16 UNF-2B 1
⁄2” O.D. 38,10 (1.50)
* Ports on side-connection Model DGSME-01-20-T8 only.

DGMAB-5-30 Blanking Plate

9,4 (.37)

50,8 (2.00) 19,1 (.75)

6,35 (.250)
21,4 (.844) 54,0 (2.125)

11,5 (.454)
.438 dia. – .25 deep
5 places
32,5
(1.28) 69,7 (2.745)
57,9 46,0
67,2 (2.725)
N (2.28) (1.81)

.281 dia. thru.

.422 c ’bore to depth shown
4 places

N-38 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

Subplates & Blanking Plates

DGVME Side Ported Subplates Model “X” Assembly

(rated at 315 bar (4500 psi) DGVME-5-SP-10-T06 .5625 525815
“5” interface DGVME-5-SP-10-T08 .7500 525816
DGVME-5-SP-10-T10 .8750 525817
DGVME-5-SP-10-T12 1.0625 525818
DGVME-5-SP-PD-10-T10† .8750 526003
DGVME-5-SP-PD-10-T12† 1.0625 526004
† Model with pilot and drain ports.

P
14,2 (.56) 20,6
(.81)
“X ” size SAE str.thd. 14,2
(.56)

39,6 (1.56)
20,6 (.81) 79,4 (3.125)
“X” size SAE 12,7 (.50) 54 (2.125) 11,1 (.437)
12,7 (.50) 37,3 (1.469)
str. thd. 11,2 (.44)
27,0 (1.062)
11,2 16,6 (.656) 2,4 (.094) 15,7 (.62)
(.44) 3,2 (.125) 50 (1.97)
6,35 (.250)
Pilot port (5P only)
21,4 (.844) .5625 –18 UNF
39,6
P X
SAE straight thread
T (1.56) Plug if internally piloted
A X
32,5 B 92,0
(1.281) (3.625)
46,0 114,3
76,2 (1.812) (4.50)
(3.00)
Y TA
Y
“X” size SAE str. thd. B

3,17 (.125) dia. 2,4 (.094) .4375 dia. 4 places

2 places (5P only)
.2500-20 UNC-2B thd.
11,1 (.437) 12,7 (.50)
12,7 (.50) deep .421 dia. thru
4 holes for mounting 101,6 (4.00)
.656 dia c’bore .468 deep 20,6 (.81)
Drain port (5P only) 4 places
.5625 –18 UNF
SAE straight thread
Plug if internally drained

33,3 (1.31)
N
A “X” size SAE straight thread
43,6 20,6 (.81)
(1.72)

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-39

 Subplates & Blanking Plates

DGVM Bottom Ported Subplates Model “X” Assembly

(rated at 315 bar (4500 psi) DGVM-5-SP-10-T06 .5625 525811
“5” interface DGVM-5-SP-10-T08 .7500 525812
DGVM-5-SP-10-T10 .8750 525813
DGVM-5-SP-10-T12 1.0625 525814
DGVM-5-SP-PD-10-T10† .8750 525832
DGVM-5-SP-PD-10-T12† 1.0625 525833
† Model with pilot and drain ports.

Pilot port (5P only)

.5625 – 18 SAE str. thd.
Plug if internally piloted
79,4 (3.125)
11,1 (.437)
54 (2.125) .421 dia. thru
12,7 (.50)
.656 dia c’bore
’ .468 deep 77,7 (3.06)
37,3 (1.469) 4 places 19
27,0 (1.062) 69,8 (2.75)
(.75)
2,4 (.094) (39,6 (1.56)
16,6 (.656)
3,2 (.125) 11,2 (.44) 9,6 (.38) 9,6
(.38)
6,35 (.250) P
21,4 (.844)
P (39,6
X (1.56)
X 52,3
32,5 B (2.06)
(1.281) 92,0
(3.625)
A
46,0
114,3
T 73,0
(1.812) 82,5 B
Y TA (4.50) (2.88)
(3.25) Y

2,4 (.094)
A
3,17 (.125) dia.
2 places 11,1 (.437) 43,6 “X” size SAE str. thd. 1,5 (.06)
(5P only) 101,6 (4.00) (1.72) Spotface 2,4 (.094) deep 11,2
.2500-20 UNC-2B thd. 4 places (.44)
12,7 (.50) deep .4375 dia. Drain port. (5P only) .5625 – 18 UNF SAE str. thd.
4 holes for mounting 4 places Plug if internally drained 33,3 (1.31)

N-40 EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015

 N

EATON DGM**-5 30 Design E-VLVI-SS001-E1 October 2015 N-41

Eaton Eaton Eaton
Hydraulics Group USA Hydraulics Group Europe Hydraulics Group Asia Pacific
14615 Lone Oak Road Route de la Longeraie 7 Eaton Building
Eden Prairie, MN 55344 1110 Morges 4th Floor, No.7 Lane280 Linhong Rd.
USA Switzerland Changning District
Tel: 952-937-9800 Tel: +41 (0) 21 811 4600 Shanghai 200335
Fax: 952-294-7722 Fax: +41 (0) 21 811 4601 China
www.eaton.com/hydraulics Tel: (+86 21) 5200 0099
Fax: (+86 21) 2230 7240

© 2015 Eaton
All Rights Reserved
Printed in USA
Document No.: E-VLVI-SS001-E1
October 2015