Eaton VICKERS SystemStak Bedienungsanleitung

ISO 4401-03; NFPA-D03; 315 bar (4500 psi); 60 L/min (15.7 USgpm)

GB 2027B

VICKERS®

SystemStak®Valves

Build a Compact, Cost-Effective, Reliable Hydraulic

System with Vickers SystemStaktValves

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.

Figure 1

PTAB

Figure 2

PTAB

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).

Figure 3

PTAB

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).

Figure 4

PTAB

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.

Figure 5

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.

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.

SystemStak Systems . . . Easy to Understand,

Easy to Design

Figure 6

AB AB

Figure 7

AB AB AB

Table of Contents

Function Basic symbol Basic model Features Page

Relief DGMC Single, dual and crossport

models 5

Counterbalance DGMR Control in port T 9

Sequence DGMR1 Single port P sequence 9

Reducing/relieving DGMX Piloted from (and reduced

pressure in) port P, A or B 9

Direct check DGMDC Single check in any port; dual

check in ports A and B only 13

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

ports A and B 16

Flow restrictor DGMFN Single or dual port, meter-in

or meter-out 19

Further information:

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

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, Approximate:

DGMC 1,3 kg (2.9 lb). . . . . . . . . . . . . . . .

DGMC2 2,5 kg (5.5 lb). . . . . . . . . . . . . . .

DGMR(1) 1,3 kg (2.9 lb). . . . . . . . . . . . . .

DGMX 1,3 kg (2.9 lb). . . . . . . . . . . . . . . .

DGMDC 1 kg (2.2 lb). . . . . . . . . . . . . . . . .

DGMPC 0,8 kg (1.8 lb). . . . . . . . . . . . . . .

DGMFN 1,1 kg (2.2 lb). . . . . . . . . . . . . . .

Relief Valves

DGMC-3-4*

DGMC2-3-4*

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 Vickers

Industrial hydraulics manual.

Typical Section

FunctionalSymbols

For simplicity these two-stage valves are

represented as single-stage models

PTBA

DGMC-3-PT-**

DGMC2-3-AT-**-BT-**

DGMC-3-BA-**

DGMC2-3-AB-**-BA-**

PTBA

Model Code for Relief Valves

DGMC(2)-3- ** - * (-B* - * * )- * -4*

1 2

3 4 5 6 7 8 9

1Type

2 = Dual relief function

Omit for single relief function

First function

Single relief, or first line of dual models

Code Pressure Discharge Usage

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

Pressure adjustment range, first

function

A = 3-50 bar (43.5-725 psi)

B = 3-100 bar (43.5-1450 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

Pressure adjustment range,

second function

Options as in

Pressure adjustment/ locking

method, second function

Options as in

Gage port: option on AT and PT

single models only

B = G1/4I(1/4BSPF)

S = SAE 4 (7/16I-20 UNF-2B)

Blank = No gage port

Design number, 40 series

Subject to change. Installation

dimensions unchanged for design

numbers 40 to 49 inclusive.

Performance

Characteristics

Pressure override

Typical performance for PT models at

max. pressure settings with mineral oil at

21 cSt (102 SUS) and at 50_C (122_F).

350

300

250

200

150

100

bar

50 6040302010 L/min

0 4 8 12 16 USgpm

1000

2000

3000

4000

5000

psi

Pressure

Flow rate

Second function

Second line of dual models

Code Pressure Discharge Usage

limited in into

BA B A Dual with

BT B T Dual with

Omit for single line models

Relief Valves

DGMC-3-4*

DGMC2-3-4*

Installation Dimensions in mm (inches)

DGMC(2)-3**-**(-B*-**)-4*

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.

For gage port thread options see model code

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) 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-4* ––154 (6.1) –

DGMC-3-BT-*W-4* –––156 (6.2)

DGMC-3-AT-*W-*-4* –160 (6.3) ––

DGMC-3-PT-*W-4* –––156 (6.2)

DGMC-3-PT-*W-*-4* –160 (6.3) ––

DGMC2-3-AT-*W-BT-*W-4* 234 (9.2) –––

Model E F G

DGMC-3-AB-*W-4* –– 164 (6.5)

DGMC-3-BA-*W-*-4* –164 (6.5) –

DGMC2-3-AB-*W-BA-*W-4* 234 (9.2) ––

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.

InstallationDimensions in mm (inches)

Pressure Controls: Counterbalance, Sequence and Pressure Reducing Valves

DGMR(1)-3-4*

DGMX*-3-4*

General Description

These single-stage valves operate by

the application of pressure 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

FunctionalSymbols

PTBA

DGMR-3-TA

DGMR1-3-PP

DGMX*-3-PA

DGMX*-3-PB

DGMX*-3-PP

PTBA

Model Code for Counterbalance, Sequence and Pressure Reducing Valves

DGM *(*) -3- ** (*) * 4*

3 4 5 6 7

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

--*-

Gage port

B=G

1/8I(1/8BSPF)

S = SAE 4 (7/16I-20 UNF-2B)

Design number, 40 series

Subject to change. Installation

dimensions unchanged for design

numbers 40 to 49 inclusive.

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