Eaton SystemStak DGM-5-30 Series User manual

DGM**-5 30 Design ISO4401 Size 05;
ANSI/B93.7M-D05

EATON DGM**-5 30 Design E-VLST-BB002-E April 2015N-2
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SystemStak™Valves
ISO4401 Size 05
General Description
Eaton SystemStakTM valves make compact hydraulic systems
in which modular valves are “sandwich” mounted between a
directional valve and a standard mounting surface. Compact
design improves system response by elimination of external
fluid conductors, thereby resulting in elimination of resonant
sounds which are noisy and lead to leakage. The design
of these valves is well proven and offers opportunities for
achieving small control assemblies, especially when the
valves are used with multi-station manifolds.
Mounting surface is available for interfacing with directional
valves and is coded “5” in the model numbers of Eaton
SystemStak valves. The “5 interface accepts Eaton 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.
Each valve “stak” can be configured to provide the specific
combination of functions required to meet the
system’s needs.
SystemStak valves are divided into two groups:
1. Valves acting in the pressure and/or tank lines
(“P” and/or “T”)
DGMC Relief valve
DGMDC Direct check
DGMFN Flow control
DGMR1 Sequence valve
DGMX2 Pressure reducing
The general rule for this group is that the DGMC relief valve
be placed nearest the subplate or manifold. The DGMDC
direct check valve should be placed nearest the directional
control valve.
The DGMR1 sequence valve should be the farthest valve
from the directional valve. The DGMR1 must be mounted
directly to a subplate or manifold with a drain port, to
externally drain the DGMR1 at the mounting face.
2. Valves acting in the service lines (“A” and/or “B”)
DGMC Relief valve
DGMC2 Dual relief valve
DGMDC Direct check
DGMPC Pilot operated check
DGMFN Flow control
DGMR Counterbalance
The general rule for this group is that the DGMC system relief
valve be the farthest valve from the directional valve.
When using a DGMPC with a DGMFN (meter-out), the
DGMPC should be nearest the directional valve.
Features and Benefits
• Reduced space requirements
Stackable SystemStak valves, used with ISO 4401-
05, CETOP 5 (NFPA-D05) directional controls, provide
compact cost-effective control of actuator direction,
speed and force.
• Reduced installed cost
SystemStak valves eliminate all intervalve piping and
connections, thereby reducing the number of potential
leakage points. Installed cost is less than when using
conventional subplate- or line-mounted valves.
• Versatile & easy to install
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.
Eaton bolt-extender kits simplify valve installation by
permitting each valve body to be separately and quickly
installed, and correctly torqued down. The kits also
allow the directional valve to be removed for service or
replacement without disturbing the stack.
• Rugged & reliable
Internal working parts are produced from hardened
steel, and reside in a continuous-cast ductile (spheroidal
graphite) iron body. Excellent reliability is ensured,
even in high pressure applications. Working parts are
serviceable without removing valves from the stack.

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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.
For ease of understanding, remember the directions of flow
for each line, and that all four flow paths pass through each
valve (see Figure 2). For clarity, directional valves are drawn
vertically in SystemStak circuit diagrams (see Figure 3.)
Each station (valve stack) is a combination of functions. When
designing and assembling SystemStak valves, care must be
taken to ensure that they interact as required by stacking
the functions in the correct sequence (see Figure 4). Direct
check valves should be placed closest to the directional
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.
A combination of directional valve, SystemStak valve(s) and
subplate/ manifold block (Figure 5 single station subplate and
Figure 6 multi station manifold) completes the assembly.
Figure 7 represents a complete SystemStak system, showing
typical use of functions available from this range. The circuit
diagram also shows the use of a tapping plate for accessing
line pressure readings, and a blanking plate to close off an
unused station of a multi-station manifold.
PT BA
Figure 1.
PT
BA
Figure 2.
PT
BA
Figure 3.
PT
BA
DGMFN-5–Y-A-B-30
DGMPC-5-AB-BA-30
DGMC-5-PT-30
Figure 4.
Figure 5.
Figure 6.
Figure 7.
P
T
BA
P
T
BA
BA
P
T
BABABA
DGMC-5-PT-30
DGMC-5-BA-30
DGMX2-5-PP-30
DGMX2-5-PA-30
DGMPC-5-AB-BA-30
DGMFN-5-Y-A-B-30
Blanking
plate

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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

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SystemStak™Pilot Operated Relief
Valves
DGMC/DGMC2
General Description
These two-stage valves limit system pressure by directing
flow to tank or the opposite cylinder port (A-B/B-A crossport
types) when system pressure reaches the valve setting.
Pressure control may be obtained in “A”, “B”, “A” and “B”,
or “P” port, and pilot flow may be internally or externally
drained, depending on model type. Any pressure in the line to
which these valves are drained is additive to the valve pres-
sure setting.
The valve pressure setting is adjustable by means of either
an adjusting screw and locknut, a hand-knob adjuster, or a
micrometer knob with keylock. External remote control/vent
connections are available on all models except crossport
relief. If required on crossport models, contact your Eaton
representative.
Model Code
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Valve function
Manifold or subplate mounted pressure
relief valve.
Valve type
2– Dual relief cavities
Blank – Single relief
Interface
5–ISO 4401-AC-05-4-A, CETOP RP35H
ANSI/NFPA D05
Port operated upon
A – “A” cylinder port (single, dual or
crossport types)
B – “B” cylinder port (single type only)
P–Pressure port (single type only)
Port drained into
A–“A” cylinder port
B–“B” cylinder port (crossport type
only)
T–Tank port (single or dual types)
Pressure range
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)
Adjustment device
H–Knob adjuster
K–Micrometer knob with keylock
W–Screw with locknut
External drain
E–External drain
Omit for internal drain models.
P port acted upon
B–“B” cylinder port (dual or crossport
type) Omit for single type.
Port drained into
A–“A” cylinder port (crossport type
only)
T–Tank port (dual type only)
Pressure range
Omit for single type.
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)
Adjustment device
Omit for single relief models.
H–Knob adjuster
K–Micrometer knob with keylock
W–Screw with locknut
External drain
E–External drain same as position 8
Omit for single relief models.
Remote control port
RC – Remote control port
Not available on crossport models.
Gage port & thread type
Gage port for P-T models only; optional
remote control (RC) and external drain
(E) ports as applicable.
Omit for crossport models
B–G 1/8” (1/8” BSPF)
S–SAE-4 O-ring boss port
(0.4375-20 UNF-2B thread)
Design number - 30 series
Subject to change. Installation
dimensions unaltered for design
numbers 30 to 39 inclusive.
DGMC - (2) - 5 - * * - * * - (E) - (B) (A) - * * - (E) - (RC) - (*) - 30
18 9 10 13 14 15 16
4 5 6 7 11 122 3

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Functional Symbols
P
P
TB
TB
TA
TA
B
B
A
A
DGMC2-5- AT-**- BT-**-*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC2-5-AT-**- BT-**RC-*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC2-5-AT-**- E-BT-**- E-*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC2-5-AT-**-E-BT-**-E-RC-*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC-5-AT-**- E-*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC-5-AT-**- E-RC-*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC-5-PT-**-*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC-5-PT-**-RC -*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC-5-PT-**-E-*-30
P
P
TB
T
B
TA
T
A
B
B
A
A
DGMC2-5-AB-**-BA-**-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC-5- AT-**-*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC-5-AT-**-RC-*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC-5-BT-**-*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC-5-BT-**- E-*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC-5-BT-**- E-RC -*-30
DR
DR
RC
DR
RC
DR
RC
G
RC
G
DR
G
RC
RC
DR
RC
DR
RC
DR
DR
P
P
TB
T
B
TA
T
A
B
B
A
A
DGMC-5-PT-**-E-RC -*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC-5-BT-**-RC -*-30
P
P
TB
TB
TA
TA
B
B
A
A
DGMC2-5-AB-**-E-BA-**-E-*-30
DR RC
DR
G
RC
DR

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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
Operating Data
Performance Data
DGMC-5 and DGMC2-5 Insertion Loss Insertion Loss
Total change in pressure drop from through ports “P” “B”,
“A” and “T”caused by the addition of the SystemStak valve
to a hydraulic circuit. Insertion loss curves (see top left):
1. DGMC2-5-AT-**-(E)-BT-**-(E)-(RC)*-30
DGMC-5-AT-**-(E)-(RC)*-30
DGMC-5-BT-**-(E)(RC)-*-30
2. DGMC-5-PT-**-(E)-(RC)*-30
3. DGMC2-5-AB-**-BA-**-30
DGMC-5 and DGMC2-5 Vented Pressure (RC models only)
(Not applicable for crossport models)
DGMC-5 and DGMC2-5 Pressure Override
The pressure override chart (below) shows typical override of
different adjustment ranges at maximum settings.
The vented pressure chart (above) indicates flow from control
port to discharge port over relief element.
Pressure Drop bar Pressure Drop psi
15
10
5
200
150
100
50
00
Flow l/min
Flow USgpm
20 40 60 80 100 120
51015202530
1
2
3
Pressure bar
Pressure psi
20
15
10
250
200
150
100
00
Flow l/min
Flow USgpm
20 40 60 80 100 120
51015202530
5
50
Pressure psi
Pressure bar
Pressure psi
200
150
100
4000
3000
2000
00
Flow l/min
Flow USgpm
20 40 60 80 100 120
51015202530
50
1000
300
350
250
5000
G
F
B
A
Override at minimum (“P”) setting all models

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14 (0.55)
50
(1.97)
25
(.98)
48
(1.89)
“W” models
(max. ext.)
Wrench size
13 (1/2”)
11,5
(0.45)
ISO 4401-AC-05-4-A (NFPA D05)
Mounting surface
13,5 (0.53)
4 mounting holes
6,90 (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).
Torque: 11,3-14,7 Nm
(100-130 lb. in.)
144,1 (5.67) max.
23
(0.91)
50
(1.97)
11,7
(0.46)
33,2
(1.31)
69,5
(2.74)
71,6
(2.82)
max.
38
(1.5)
11,8
(0.46)
1,8
(0.46) Adjust clockwise to increase pressure
setting.
External drain port. External
connection port thread (see table)
External drain port.
Plugged for internal drain.
External connection port
thread type (see table)
Remote control port.
(“RC” models only)
External connection port
thread type (see table)
Hex key
4 (5/32”)
Gage port. External connection
port thread type: (see table)
TB
B
P
A
TA
3rd angle
projection
Installation Dimensions
DGMC-5-PT Single Relief
mm (inches)
See page 37 for optional adjustment devices.
See page 38 for interface dimensions.
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)
Note: Back pressure in drain is added to this
setting for internal drain models only.

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ISO 4401-AC-05-4-A (NFPA D05) Mounting surface
4 mounting holes
(See page 8 for
specifications)
Adjust pressure “A ” port. Adjust clockwise to increase pressure setting.
50
(1.97)
30
(1.18)
48 (1.89)
“W ” models
(max. ext.)
Wrench size ISO 4401-AC-05-4-A (NFPA D05)
Mounting surface
13,5 (0.53)
141 (5.55)
37 (1.46)11,7 (0.46)
33,2
(1.31)
69,5
(2.74)
71,6
(2.82)
max.
Adjust pressure“B” port. Adjust clockwise to increase pressure setting.
External drain port
*
Plugged for internal drain.
Remote control port. *
(“RC” models only)
Hex key
TA
B
P
A
TB
11,5
(0.45)
15,3
(0.60)
11,5
(0.45)
12,5 (0.49)
50
(1.97) 30
(1.18)
48 (1.89)“W ” models
(max. ext.)
Wrench size
13,5 (0.53)
4 mounting holes
(See page 8 for specifications)
141 (5.55)
50 (1.97)11,7 (0.46)
33,2
(1.31)
69,5
(2.74)
71,6
(2.82)
max.
External drain port *
Remote control port *
(“RC ” models only)
Hex key
TB
B
P
A
TA
11,5
(0.45)
11,5
(0.45)
12,5
(0.49)
External drain port *. Plugged for internal drain.
4 (5/32”)
13 (1/2”)
13 (1/2 ”)
4 (5/32”)
15,3 (0.60)
Installation Dimensions
DGMC-5-BT Single Relief
mm (inches)
See page 37 for optional adjustment devices.
See page 38 for interface dimensions.
* External connection port thread type:
“S” models - SAE-4 O-ring boss port
(0.4375-20 UNF-2B thread).
“B” models - G 1/8 (1/8 BSPF)
DGMC-5-AT Single Relief
• Back pressure in drain is added to this setting for
internal drain models only.

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DGMC2-5-AT-**-BT-**-30
Dual Relief
mm (inches)
See page 37 for optional adjustment devices.
See page 38 for interface dimensions.
• Back pressure in drain is added to this
setting for internal drain models only.
* Remote control port. Both end
s
(“RC” models only)
50
(1.97)
30
(1.18)
48
(1.89)
“W ” models
(max. ext.)
typ. both ends
ISO 4401-AC-05-4-A (NFPA D05)
Mounting surface
13,5
(0.53)
153,9 (6.06)
50
(1.97)
11,7
(0.46)
33,2
(1.31)
71,6
(2.82)
max.
Adjust pressure “B” port. Adjust
clockwise to increase pressure setting.
TA
B
P
A
TB
Wrench size both ends
33,2
(1.31)
69,5
(2.74)
15,3
(0.60)
both
ends
11,5
(0.45)
both
ends
both
ends
12,5 (0.49)
both ends
Hex key
External drain port *
(both ends).
Plugged for internal drain.
Adjust pressure “A” port. Adjust
clockwise to increase pressure
setting.
13 (1/2”)
4 (5/32”)
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).
Torque: 11,3-14,7 Nm
(100-130 lb. in.)
* Remote control port. Both end
s
(“RC” models only)
* External connection port thread type:
“S” models - SAE-4 O-ring boss port
(0.4375-20 UNF-2B thread).
“B” models - G 1/8 (1/8 BSPF) 15 in model code
Installation Dimensions