Eaton SystemStak DGM 3 40 Series Manual de usuario

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

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

Figure 1

Figure 2

Figure 3

PTAB

Figure 6

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

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

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.

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

BT B T Dual

with

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 B A Single

only

AT A T Single, or

dual with

BT B T Single

only

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015 M-5

350

300

250

200

150

100

bar

50 600102030

/min

04812 16 USgpm

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

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 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

(1.57)

3,5 (0.14) Ø3 (0.12 dia)

(0.79)

47,6

(1.87)

(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

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

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

Model Code

EATON DGM**-3 40/41 Design E-VLST-BB001-E April 2015 M-9

300

250

200

150

100

bar

50 6001020304 L/min

0481216 USgpm

1000

2000

3000

4000

psi

Pressure

Flow rate

DGMX1-3

DGMX2-3

DGMX3-3

462

0201

Reduced pressure lineReverse ﬂow to T line

DGMX* 3 F

DGMX* 3 C

DGMX* 3 B

DGMX* 3 A

300

250

200

150

100

bar

50 6001020304 L/min

0481216 USgpm

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

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

Installation Dimensions

in mm (inches)

Performance Data

(contd...)

bar

50 6001020304 L/min

0481216 USgpm

1000

psi

200

400

600

800

Reduced pressure settin

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

14 (0.55) max.

4 ( 5/32 ) A/F hex. socket

(1.57)

3,5 (0.14) Ø3 (0.12 dia)

(0.79)

47,6

(1.87)

(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)

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