Eaton SystemStak DGM 3 40 Series User manual

DGM**-3 40/41 Design ISO4401 Size 03;
ANSI/B93.7M-D03

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015M-2
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SystemStak™Valves
ISO 4401 Size 03
Build a Compact,
Cost-Effective, Reliable
Hydraulic System with Eaton
SystemStakTM Valves
Reduces System Space
Requirements
SystemStak valves make
compact hydraulic systems
in which specific function
valves are “sandwich’
mounted between a
directional valve and a
standard mounting surface.
Reduce Cost
SystemStak valves eliminate
intervalve piping and
leak-prone tube and pipe
connections. Installed cost
is less than when using
conventional valves.
Versatile and Easy to Install
SystemStak valves have
all the internal passages
necessary to serve the
directional valve topping
them. Mounting surfaces
and port patterns are to
international standards: any
valve conforming to ISO
4401 size 03; ANSI/B93.7M
size D03; NFPA-D03; CETOP
3; and DIN 24340, NG6
mounting interface can be
used with these
SystemStak valves.
Rugged and Reliable
Internal working parts are
produced from hardened
steel and mounted in ductile
(spheroidal graphite) iron
bodies. Excellent reliability is
ensured. Working parts are
accessible without removing
valves from an
assembled stack.
SystemStak Systems... 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 fig. 1.
For ease of understanding,
remember the directions
of flow for each line, and
that all four flow paths pass
through each valve (see fig.
2). For clarity, directional
valves are drawn vertically in
SystemStak circuit diagrams
(see fig. 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 (fig. 4 is an
example).
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 are
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
(fig. 5: single station subplate
and fig. 6: multi-station
manifold) completes
the assembly.
Figure 4
PTAB
Figure 5
P
T
BA
Figure 1
PT
Figure 2
P
TA
A
B
B
Figure 3
PTAB
Figure 6
P
T
BA
BA
P
T
AB AB AB
Figure 7
Figure 6
Figure 5
Figure 3
Figure 4
Figure 2
Fig. 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.
Figure 1

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015 M-3
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Table of Contents
Function Basic symbol Basic model Features Page
Relief DGMC Single, dual and crossport 5
models
Counterbalance DGMR Control in port T 8
Sequence DGMR1 Single port P sequence 8
Reducing/relieving DGMX Piloted from (and reduced 8
pressure in) port P, A or B
Direct check DGMDC Single check in any port; dual 11
check in ports A and B only
Pilot operated check DGMPC Single in port A or B; dual 14
in ports A and B
Flow restrictor DGMFN Single or dual port, meter-in 17
or meter-out
Further information: 20
Mounting bolts, subplates and manifold blocks
Hydraulic fluids
Filtration requirements
Temperature limits
Pressure drop at other viscosities
Types H and K adjusters
Warranty and repair
Ordering procedure

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015M-4
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Model Codes
SystemStak™Relief Valves
General Description
These two-stage adjustable pressure relief valves limit the
maximum pressure in the line(s) controlled by the integral
relief valve elements.
Pressure adjustment options of control knob (with or without
keylock) or screw/locknut design are available. The two-stage
operation is basically identical to
long-established balanced piston valves, described in detail in
Eaton Industrial hydraulics manual.
Typical Section
DGMC-3-41
DGMC2-3-41
Type
2– Dual relief function
Omit for single relief
function
First function
Single relief, or first line of
dual models
Pressure adjustment
range, first function
A– 3-50 bar (45-725 psi)
B– 3-100 bar (45-1450 psi)
C– 10-200 bar (145-2900 psi)
G– 50-315 bar (725-4500
psi)
Pressure adjustment/
locking method, first
function
H– Handknob
K– Micrometer with keylock
W– Screw and locknut
Second function
Second line of dual models
Pressure adjustment
range, second function
Options as in
Pressure adjustment/
locking method,second
function
Options as in
Gauge port: option
on AT and PT single
models only
B– G1⁄4”1⁄4 BSPF
S– SAE 4 (7⁄16“-20 UNF-2B)
Blank – No gauge
Design number,
41 series
Subject to change.
Installation dimensions
unchanged for design
numbers 40 to 49 inclusive.
5
1
2
3
4
6
7
8
9
3
4
DGMC(2) -3- ** - * * (-B* - * * )- * - 41
1 2 3 4 5 6 7 8 9
Pressure Discharge Usage
Code limited in into
BA B A Dual
with
AB
BT B T Dual
with
AT
Omit for single line models
Pressure Discharge Usage
Code limited in into
PT P T Single
only
AB A B Single, or
dual with
BA
BA B A Single
only
AT A T Single, or
dual with
BT
BT B T Single
only

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015 M-5
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350
300
250
200
150
100
50
0
bar
50 600102030
4L
/min
04812 16 USgpm
0
1000
2000
3000
4000
5000
psi
Pressure
Flow rate
DGMC-3-PT-B* 41
DGMC-3-PT-A* 41
DGMC-3-PT-G* 41
DGMC-3-PT-C* 41
Pressure override Typical performance for PT models at max.
pressure settings with mineral oil at 21 cSt (102 SUS) and at
50ºC (122ºF).
Functional Symbols
For simplicity these two-stage valves are represented as
single-stage models
PTBA
DGMC-3-PT-41 DGMC2-3-AT-**-BT-41
PTBA
DGMC-3-BA-41
PTBA
DGMC2-3-AB-**-BA-41
PTBA
Operating Data
Maximum flow rate 60 L/min (16 USgpm)
Maximum operating pressure 315 bar (4500 psi)
Pressure drops See graphs
Mounting position Optional
Mass Approx. DGMC- 1.3kg (2.9lb)
DGMC2- 2.5kg (5.5lb)
Performance Data

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015M-6
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Installation Dimensions
in mm (inches)
DGMC(2)-3**-**(-B*-**)-41
Models with type W adjuster
To adjust valve setting
slacken off locknut and turn
adjuster screw. 
Turn clockwise to increase
pressure; counter-clockwise
to decrease pressure
Re-tighten locknut after
completing adjustment.
A
P
B
T
A
P
B
T
A max.
79 (3.1)
fully out
Line B or Line P adjustment
(according to model type)
Line A adjustment
B max.
4 (0.16) max. over gage port plug 
4 ( 5/32 ) A/F hex. socket
40
(1.57)
3,5 (0.14) Ø3 (0.12 dia)
20
(0.79)
47,6
(1.87)
46
(1.8)
39 (1.54)
76 (3)
C max.
D max.
4 off “O” seals supplied for this mounting face4 holes through: Ø5,3 (0.21 dia)
12,7 (1/2) A/F hex. locknut
Torque to 25-30 Nm (18-22 lbf ft)
Model A B C D
DGMC-3-AT-*W-41 – – 154 (6.1) –
DGMC-3-BT-*W-41 – – – 156 (6.2)
DGMC-3-AT-*W-*-41 – 160 (6.3) – –
DGMC-3-PT-*W-41 – – – 156 (6.2)
DGMC-3-PT-*W-*-41 – 160 (6.3) – –
DGMC2-3-AT-*W-BT-*W-41 234 (9.2) – – – For gage port thread options see model code 8

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015 M-7
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A
P
B
T
E max.
Line B adjustmentLine A adjustment
16,75 (0.66)
8 (0.13) max.
G max.
F max.
16,75 (0.66)
10 (0.4) max.
Model E F G
DGMC-3-AB-*W-41 – – 164 (6.5)
DGMC-3-BA-*W-*-41 – 164 (6.5) –
DGMC2-3-AB-*W-BA-*W-41 234 (9.2) – –
Installation Dimensions
in mm (inches)

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015M-8
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DGMR(1)-3-40
DGMX*-3-40
General Description
These single-stage valves operate by the application of pres-
sure on the end of the valve spool, acting against a spring
which is loaded by means of the adjustment mechanism.
In the counterbalance and sequence valves the spool is offset
by the spring such that flow cannot pass through the valve.
When the force exerted by the pilot pressure on the spool
end exceeds the force of the main spring, the spool is moved
to allow flow through the valve.
In the pressure reducing valve the flow path is normally open
and is closed as the pilot pressure exceeds the setting of
the valve. Excessive pressure in the reduced-pressure line is
prevented by a pressure relieving function.
Pressure adjustment options of control knob (with or without
keylock) or screw/locknut design are available.
Typical Section
SystemStak™
Pressure Controls: Counterbalance, Sequence
and Pressure Reducing Valves
Type
R– Counterbalance
function
R1 – Sequence function
X1 – Pressure reducing,
underlapped
X2 – Pressure reducing,
overlapped
X3 – Pressure reducing,
overlapped, low leakage
Function ports
For DGMR only:
TA – Counterbalance
control function
in “T”port, controlled by
pressure in “A” port
For DGMR1 only:
PP – Sequence control
in “P” port, controlled by
pressure in “P” port
For DGMX only:
PA – Pressure reducing
function in line P, piloted
from A
PB – Pressure reducing
function in line P, piloted
from B
PP – Pressure reducing
function in line P, piloted
from P
Adjuster location
Option on DGMX only
L– Adjuster at “A”-port end
of valve
Blank – Adjuster at “B”-port
end of valve
Pressure adjustment
range
For DGMX only:
Y– 1,40-7,0 bar (21-101 psi)
R– 1,40-45,0 bar (21-652 psi)
For DGMR and DGMX:
A– 3-30 bar (43.5-435 psi)
B– 3,5-70 bar (51-1000 psi)
C– 10-140 bar (145-2000 psi)
F– 20-250 bar (290-3625 psi)
Pressure adjustment/
locking method
H– Handknob
K– Micrometer with keylock
W– Screw and locknut
Gauge port
B– G1⁄8 “ (1⁄8 BSPF)
S– SAE 4(7⁄16“-20 UNF-2B)
Design number, 40
series
Subject to change.
Installation dimensions
unchanged for design
numbers 40 to 49 inclusive.
DGM *(*) -3- ** (*) - * * - * - 40
4 5 61 2 73
1
2
7
6
5
3
4
Model Code

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015 M-9
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300
250
200
150
100
50
0
bar
50 6001020304 L/min
0481216 USgpm
0
1000
2000
3000
4000
psi
Pressure
Flow rate
DGMX1-3
DGMX2-3
DGMX3-3
462
0201
0
Reduced pressure lineReverse flow to T line
DGMX* 3 F
DGMX* 3 C
DGMX* 3 B
DGMX* 3 A
300
250
200
150
100
50
0
bar
50 6001020304 L/min
0481216 USgpm
0
1000
2000
3000
4000
psi
Pressure
Flow rate
DGMR1 3 F
DGMR1 3 C
DGMR1 3 B
DGMR1 3 A
Performance Data
Typical performance with mineral oil at 21 cSt (102 SUS) and at 50ºC (122ºF).
Operating Data
DGMX*-3-P* DGMR1-3-PP
PTBA
DGMR-3-TA
DGMR1-3-PP
DGMX*-3-PB
DGMX*-3-PP
PTBA
DGMX*-3-PA
PTBA
PTBA
PTBA
Maximum flow rate 60 L/min (16 USgpm)
Maximum operating pressure 315 bar (4500 psi)
Pressure drops See graphs
Mounting position Optional
Mass Approx. DGMR*- 1.3kg (2.9lb)
DGMX*- 1.3kg (2.9lb)
Functional Symbols

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015M-10
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Installation Dimensions
in mm (inches)
Performance Data
(contd...)
0
bar
50 6001020304 L/min
0481216 USgpm
0
1000
psi
10
20
30
40
50
60
70
200
400
600
800
Reduced pressure settin
g
Q max.
DGMX*-3-P*
Low Pressure/Flow Rate Minimum Performance
Effect of Back-Pressure
The effective reduced
pressure is equal to the valve
adjustment setting plus any
back-pressure in line T
Dead Head Leakage
Typical leakage flow at 250
bar inlet pressure from
reduced pressure line into
T at “Dead Head” condition
(i.e. No flow required at the
reduced pressure outlet.)
This leakage flow must be
provided at the inlet line P in
order to maintain the reduced
outlet pressure.
DGMX1-3 = 1600
DGMX2-3 = 400
DGMX3-3 = 80
A
P
B
T
A
P
B
T
14 (0.55) max.
4 ( 5/32 ) A/F hex. socket
40
(1.57)
3,5 (0.14) Ø3 (0.12 dia)
20
(0.79)
47,6
(1.87)
46
(1.8)
39 (1.54)
76 (3)
4 off “O”seals supplied for this mounting face4 holes through: Ø5,3 (0.21 dia)
12,7 (1/2) A/F hex. locknut
Torque to 25-30 Nm (18-22 lbf ft)
80 (3,1) max.
DGMR-3-TA-**-*-40
DGMR1-3-PP-**-*-40
DGMX(*)-3-P*(L)-**-*-40
Models with type W adjuster
To adjust valve setting slacken
off locknut and turn adjuster
screw.
Turn clockw to increase pressure;
counter-clockwise to decrease
pressure.
Re-tighten locknut after
completing adjustment.
DGMX2-3-**L models have
adjuster and end cap/gage port
locations interchanged from
positions shown.
For gage port thread options see model code ,
(pressure plug fitted)
6

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015 M-11
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Direction of flow
X– Free flow away from actuator
Y– Free flow towards actuator
Check location
A– A line
B– B line
P– P line with free flow towards
actuator (X)
T– T line with free flow away
from actuator(Y)
Check valve opening/ cracking
pressure
K– 1 bar (14.5 psi)
M– 2,5 bar (36 psi)
N– 5 bar (72 psi)
Check location (second element
of dual model)
Only available as model type
DGMDC-3-Y-A*-B*-4*
B– B line
Check valve opening/ cracking
pressure (second function of dual
model)
Options as in
Design number, 40 series
Subject to change. Installation
dimensions unchanged for design
numbers 40 to 49 inclusive.
SystemStak™
Direct Check Valves
Model Code
DGMDC-3-41
General Description
These valves allow free flow
in one direction in the line
in which the check valve
element(s) is (are) located;
flow in the opposite direction
is not possible.
Typical Section
PTBA
DGMDC-3-X-A* DGMDC-3-Y-A*
PTBA
DGMDC-3-X-B*
PTBA
DGMDC-3-Y-B*
PTBA
DGMDC-3-Y-A*-B*
PTBA
DGMDC-3-Y-P*
PTBA
DGMDC-3-X-T*
PTBA
1
3
2
5
6
3
4
DGMDC -3- * - * * (-* *) - 41
1 2 3 4 5 6
Functional Symbols

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015M-12
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Maximum flow rate 60 L/min (16 USgpm)
Maximum operating pressure 315 bar (4500 psi)
Pressure drops See graphs
Mounting position Optional
Mass approximate 1 kg (2.2 lb)
0
bar
50 6001020304 L/min
0481216 USgpm
0
psi
Flow rate
3
6
9
12
15
18
21
24
27
30
100
200
300
400
Pressure drop
Typical performance with mineral oil at 21 cSt (102 SUS) and
at 50ºC(122ºF) 
Pressure drop: free flow through check valve
For other viscosities, see “Further Information”.
Internal Leakage Across Closed Check Valve
Less than 0,25 ml/min (0.015 in3/min) at 250 bar (3625 psi)
Performance Characteristics
Operating Data

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015 M-13
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Installation Dimensions in mm (inches)
A
P
B
T
A
P
B
T
A
P
B
T
40
(1.57)
3,5 (0.14)Ø3(0.12 dia)
H
47,6
(1.87)
46
(1.8)
39 (1.54)
76 (3)
4 off“O”seals supplied for this mounting face
4 holes through: Ø5,3 (0.21 dia)
101 (4) max.
13
(0.51)
H
89 (3.5) max.
13 (0.51)
H
88 (3.46) max.
12
(0.47)
DGMDC-3-Y-A*-B*-41 DGMDC-3-X-A*-41
DGMDC-3-X-T*-41
DGMDC-3-Y-A*-41
DGMDC-3-Y-P*-41
DGMDC-3-X-B*-41
DGMDC-3-Y-B*-41
Model Type H
DGMDC-3-X-A*-41
DGMDC-3-X-B*-41 16,75
DGMDC-3-Y-P*-41 (0.66)
DGMDC-3-X-T*-41
DGMDC-3-Y-A*-41 23,25
DGMDC-3-Y-B*-41 (0.92)
DGMDC-3-Y-A*-B*-41

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015M-14
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SystemStak™
Pilot Operated Check Valves
DGMPC-3-41
General Description
These valves provide pilot operated check functions in one or
both service lines (A or B), the operating pilot supply coming
from the opposite service line. Thus with pressure in one
service line the check valve in the other service line will be
open (subject to system/actuator pressures being correct for
the valve area ratios).
A 3:1 area ratio of pilot piston to check valve seat is
supplemented by an optional 10:1 decompression feature.
Typical Section
DGMPC -3- (D)** * [-(D)** *] - 41
1 2 3 4 5 6 7
Model Code
Decompression feature
D– 10:1 decompression ratio
Omit if not required
Function
AB – Check in line A, pilot operated
from line B
D– Check in line B, pilotoperated from
line A (single check model only)
Check valve opening/cracking
pressure
K– 1 bar (14.5 psi)
M– 2,5 bar (36 psi)
N– 5 bar (72 psi)
Decompression feature (second
function of dual models)
As in
Omit for single line models,and if not
required for dual models
Note: “D” must be specified here, for dual
models, if called for in
Second function of dual models
BA – Check in line B, pilot operated
from line A
Omit for single line models
Check valve opening/cracking
pressure (second function of dual
models)
Options as in
Omit for single line models
Design number, 41 series
Subject to change. Installation
dimensions unchanged for design
numbers 40 to 49 inclusive.
1 4 6
7
5
2
3
1
1
3
PTBA
B1 A1
DGMPC-3-(D)AB*-(D)BA*
PT BA
B1 A1
DGMPC-3-(D)AB*
PT
BA
B1 A1
DGMPC-3-(D)BA*
Functional Symbols

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015 M-15
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Performance Data
Pilot Pressures
Pilot area ratios:
Main check valve . . . . . . . . . . . . . . . . 3:1
Decompression poppet . . . . . . . . . . 10:1
Use applicable ratio and opening/
cracking pressure to calculate pilot
pressure to open valve element, applied
to the following formulae:
To open valve or decompression poppet
in line A:
Pressure at B1 =
To open valve or decompression poppet
in line B:
Pressure at A1 =
Where:
pA= Pressure at A
pC= Cracking/opening pressure
pA1 = Pressure at A1
pB= Pressure at B
pB1 = Pressure at B1
A =
B = Service line location;
A1= see functional symbols
B1=
Leakage
Less than 0,25 ml/min (0.015 in3/min) at
250 bar (3625 psi).
p
A
+ p
C
_ p
A1
Area ratio factor
+ pA1
p
B
+ p
C
_ p
B1
Area ratiofactor
+ pB1
0
bar
50 6001020304 L/min
04 81216 USgpm
0
psi
Flow rate
3
6
9
12
15
18
21
24
27
30
100
200
300
400
Pressure drop
Pressure Drop Data
Typical performance with mineral oil at 21 cSt (102 SUS) and
at 50ºC(122ºF)
Pressure drop: flow path A1 to A or B1 to B (no pilot-pressure
operation)
Pressure drop: flow path A to A1, or B to B1 with check valve
pilot-operated fully open
0
bar
50 600102030
4L
/min
0481216USgpm
0
psi
Flow rate
200
Pressure drop
100
10
5
15
20
25
300
For other viscosities, see “Further Information”.
u
Maximum flow rate 60 L/min (16 USgpm)
Maximum operating pressure 315 bar (4500 psi)
Pressure drops See graphs
Mounting position Optional
Mass approximate 0.8 kg (1.81 lb)
Operating Data

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015M-16
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Installation Dimensions in mm (inches)
A(A1)
P
B(B1)
T
A
P
B
T
A
P
B
T
40
(1.57)
3,5 (0.14) Ø 3 (0.12 dia)
47,6
(1.87) 46
(1.8)
39 (1.54)
76 (3)
4 off “0” seals supplied for this mounting face4 holes through: Ø 5,3 (0.21 dia)
101 (4) max.
13
(0.51)
97 (3.82)
13
(0.51)
97 (3.82)
12 (0.47)
23
(0.9)
DGMPC-3-(D)AB*-(D)BA*-41 DGMPC-3-(D)AB*-41
DGMPC-3-(D)BA*-41

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015 M-17
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SystemStak™
Flow Restrictor Valves
DGMFN-3-41
General Description
These valves regulate flow by means of an adjustable orifice
which is not pressure compensated, and flow through
the valve is entirely dependent upon pressure drop at any
particular setting of the orifice.
Dual service-line models with an integral non-return valve
around each control orifice provide for meter-in or meter-out
control; single line versions of these are available.
For flow restriction in P or T lines (where reverse free flow is
not required) models without check valves are available.
Adjustment options are either screw/locknut or handknob.
Typical Section
Model Code
DGMFN -3- * -* * * (-* * *) - 41
1 2 3 4 5 6 7 8
Direction of flow control (with
respect to machine actuator)
X– Meter-in control, applicable to lines
A and B
Y– Meter-out control, applicable to
lines A and B
Z– Meter-in control, line P only and
meter-out control, line T only.
Location of control function
(single model or first line of
dual model)
P– Line P (single model only)
T– Line T (single model only)
A– Line A (single model or first line of
dual model)
B– Line B (single model only)
Type of control needle/orifice
(single model or first line of dual
model)
1– Fine control
2– Standard control
Adjuster type (single model or
first line of dual model)
H– Handknob
W– Screw/locknut
Control in second line
B– Line B (use for dual models with
“A” specified at )
Omit for single models
Type of control needle/orifice
(second line of dual models)
Options as in
Omit for single models
Adjuster type (second line of dual
models)
Options as in
Omit for single models
Design number, 41 series
Subject to change. Installation
dimensions unaltered for design
numbers 40 to 49 inclusive.
1
4
6
7
8
5
2
3
4
3
2

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015M-18
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PTBA
DGMFN-3-X-A**-B**
DGMFN-3-Z-P**
PTBA
DGMFN-3-Z-T**
PTBA
DGMFN-3-Y-A**-B**
PT
BA
PTBA
DGMFN-3-X-A**-B**
DGMFN-3-Z-P**
PTBA
DGMFN-3-Z-T**
PT
BA
DGMFN-3-Y-A**-B**
PTBA
Maximum flow rate 60 L/min (16 USgpm)
Maximum operating pressure 315 bar (4500 psi)
Pressure drops See graphs
Mounting position Optional
Mass approximate 1.1 kg (2.2 lb)
0
bar
50 6001020304 L/min
0481216 USgpm
0
psi
Flow rate
30
200
400
Pressure drop
Number of turns of adjuster
123456
10
20
40
50
60
600
800
0
bar
50 600102030
4L
/min
04 81
21
6U
Sgpm
0
psi
Flow rate
30
200
400
Pressure drop
Number of turns of adjuster
12
34
5
6
10
20
40
50
60
600
800
0
bar
50 6001020304 L/min
0481216 USgpm
0
psi
Flow rate
200
Pressure drop
150
100
50
14
2
4
6
8
10
12
Free flow through check valve
Pressure Drop
Typical performance with mineral oil at 21 cSt (102 SUS) and at 50º C(122º F)
Type “1” needle (see model codes and ) Type “2” needle (see model codes and )
3 36 6
 For other viscosities see “Further Information”.
Performance Characteristics
Functional Symbols
Operational Data

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015 M-19
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Installation Dimensions in mm (inches)
DGMFN-3-X-***(-***)-41
DGMFN-3-Y-***(-***)-41
DGMFN-3-Z-***-41
Models with type W adjuster
To adjust valve setting, slacken off locknut and turn screw 
Re-tighten locknut after completing adjustment.
A
P
B
T
A
P
B
T
A
P
B
T
Line B or line P adjustment
(according to model type)
39 (1.54)
76 (3)
C max.
45 (1.8)
max.
47,6
(1.87)
46
(1.8)
4 off “0” seals supplied for this interface
4 holes through: Ø5,3 (0.21 dia)
A max.
4 ( 5/32 ) A/F hex. socket
40
(1.57)
3,5 (0.14) Ø3 (0.12 dia)
E max.
12,7 (1/2) A/F hex. locknut .
Torque to 25-30 Nm (18-22 lbf ft)
Line A or line T adjustment
(according to model type)
B max.
D max.
47 (1.85)
max.
E max.
56 (2.2)
max.
Ø32 (1.26 dia)
M4 locking screw
2 (5/64 ) A/F hex. socket
Type H adjuster Turn clockwise to decrease flow (increase restriction);
counter-clockwise to increase flow (reduce restriction).
Model A B C D E
DGMFN-3-X-A*W-41 121 (4.76) – – – 16,75 (0.7)
DGMFN-3-X-A*W-B*W-41 – – 167 (6.6) – 16,75 (0.7)
DGMFN-3-X-B*W-41 – 122 (4.8) – – 16,75 (0.7)
DGMFN-3-Y-A*W-41 121 (4.76) – – – 23,25 (0.9)
DGMFN-3-Y-A*W-B*W-41 – – 167 (6.6) – 23,25 (0.9)
DGMFN-3-Y-B*W-41 – 122 (4.8) – – 23,25 (0.9)
DGMFN-3-Z-P*W-41 – – – 123 (4.8) 16,75 (0.7)
DGMFN-3-Z-T*W-41 – – – 123 (4.8) 23,25 (0.9)

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015M-20
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Further Information
Mounting Bolts,
Subplates and Manifold
Blocks
Mounting Bolts
The length of mounting bolt
used to install a SystemStak
assembly is dependent on
the number of valves being
used, plus the length needed
for mounting other valves in
the assembly, such as:
– solenoid operated, or other
type of directional valve
– tapping plate
– blanking or crossover plate
Eaton offers a large selection
of bolt kits (one bolt kit for
these SystemStak valves
comprises 4 bolts) in metric
and inch sizes as listed. To
determine your needs, use
the following guide for bolt
length calculation.
Bolt Kit Selection
Subplates and Manifold Blocks
See “Subplates and Auxiliary
Connection Plates”
catalog 2425.
Metric: M5-6g Inch: 10-24 UNC-3A
Length Eaton bolt Length Eaton bolt
(mm) kit number (in) kit number
50 BKDG3699M 2.0 BKDG3698
60 BK466836M 2.375 BK466849
70 BK464125M 2.75 BK870017
80 BK466837M 3.125 BK466850
90 BK466838M 3.5 BK466851
100 BK466839M 3.937 BK466852
110 BK466840M 4.312 BK466853
120 BK466841M 4.75 BK466854
130 BK466842M 5.125 BK466855
140 BK466843M 5.5 BK466856
150 BK466844M 5.937 BK466857
160 BK466845M 6.312 BK466858
170 BK466846M 6.687 BK466859
A = Bolt clamp length
in directional valve,
blanking plate, crossover
plate, etc.
B = Height of intermediate
valve stack, comprising
Eaton SystemStak
valve(s) plus tapping
plates, etc.
C = Depth of thread
engagement in sub-
plate/ manifold block:
8/10 mm (0.3/0.4), valid
for: 315 bar (4500 psi)
when using cast iron or
steel subplates/manifold
blocks, or 210 bar (3045
psi) when using Eaton
aluminium alloy
manifold blocks.
L = Required bolt length;
select from the table.
Notes
1. Bolts should be torqued to 7-9
Nm (63-80 lbf in) with threads
lubricated.
2. If not using Eaton bolt kits, bolts
must be to Grade 12.9 (ISO 898)
or better.
A
B
C
L