DG4V-2-2C

Double solenoid model

DG4V-2-2B

Single solenoid model

Solenoid Operated Directional Valves

DG4V-2 10 Series

General description and

application benefits

These solenoid operated directional

control valves are for directing and

stopping flow at any point in a hydraulic

system. The features being released

with this range are based on Vickers

experience with size 3 valves.

 Efficient control of high hydraulic

powers with low solenoid power

consumption.

 Low internal leakage reduces power

losses, increases system efficiency -

the result of improved manufacturing

techniques for spools and bores.

 Viton seals with multi-fluid capability

without need to change seals.

 High sustained machine productivity

and higher uptime because of proven

fatigue and endurance life- tested

over 10 million cycles.

 Compact and cost-effective system

design when used with Vickers

SystemStak valves and

multi-station subplates.

Viton is a registered trademark of E.I. DuPont

Features and Benefits

 Size

The reduced size of the DG4V-2 valve

compared to size 3 valves, offers new

installation possibilities, especially when

used with size 2 SystemStak valves.

The DG4V-2 double solenoid models

requires only 55% of the space of the

size 3 DG4V-3 valve.

Size 3

220mm

(8.66”)

Size 2

180mm

(7.09”)

Size 3

48mm

(1.88”)

Size 2

35,5mm

(1.4”)

 Low Wattage

A 12W coil for direct drive from a PLC

or PC. Ideal for bus communications,

allowing dramatic reduction in cabling,

with savings in time and cost.

PLC

500 mA 500 mA

 High Pressure and

Flow Capability

Highly reliable operation up to 30 l/min

(7.9 USgpm) and 250 bar (3600 psi).

Establishes new market standards while

opening new possibilities to system

designers on valve size selection.

0 30 l/min

(7.9 USgpm)

250 bar

(3600 psi)

Ports P, A, B

30 l/min

(7.9 USgpm)

160 bar

(2300 psi)

Port T

Pressure

Flow rate

Pressure

 Manual Override

All solenoids have manual override

fitted as standard to allow the spool to

be moved in no-power situations. Ideal

during machine set-up and power

failure situations.

 High Reliability

Design of spring forces and profile of

DC solenoid force characteristics ensure

spool position selection under extreme

conditions. Result is a valve with high

reliability when being energized or

de-energized.

Vickers

DG4V-2

Typical

competitor

Solenoid

force

Solenoid

de-energized

Solenoid

energized

Stroke

Spring

force

Spring

force

Solenoid

force

Force

Stroke

 Mobile Connectors

All solenoids are available with flying

leads. Because they make possible

the use of several mobile connectors,

flying leads are ideal for the mobile

market. Connectors are also available

directly connected to the solenoid.

Sol. B

Double solenoid valves,

two position, detented

Single solenoid valves,

solenoid at port A end

Single solenoid valves,

solenoid at port B end

Sol. ASol. B

Sol. B

Sol. A

Sol. ASol. B

DG4V-2-*N(V) valves DG4V-2-*A(V) valves DG4V-2-*AL(V) valves

Double solenoid valves,

spring centered

DG4V-2-*

C(V) valves DG4V-2-*B(V) valves DG4V-2-*BL(V) valves

DG4V-2-8

C(V) valves DG4V-2-8B(V) valves

DG4V-2-8

BL(V) valves

Double solenoid valves,

two position, detented

Single solenoid valves,

solenoid at port A end

Single solenoid valves,

solenoid at port B end

Sol. A

Sol. B

Sol. A

Sol. B

Double solenoid valves,

spring centered

European Solenoid Standard

U.S. Solenoid Standard

The schematics of the valve function applies to both U.S.

and European valves.

Transient condition only

Functional Symbols

Spool types shown represent the

highest anticipated proportion of market

requirements, based on Vickers

experience with size 3 valves. For other

spool functions that may be required,

consult your VIckers representative.

Solenoids Identified to U.S.

Standards

Functional symbol related to solenoid

identity “A” and/or “B” according to

NFPA/ANSI standards, i.e. energizing

solenoid “A” gives flow P to A, solenoid

“B” gives flow P to B (as applicable).

Port A

Port P

Port T

Port B

Solenoid Solenoid

Solenoid For spool type Solenoid

B All except “8” A

A “8’” only B

For valves with type “8” spools, solenoid

identity to U.S. convention is the same

as for European convention.

Solenoids Identified to

European Standards

(Specify “V” in model code)

Functional symbols related to solenoid

identity “A” and/or “B” according to

European convention i.e. solenoid “A”

adjacent to “A” port, solenoid “B” adjacent

to “B” port of valve.

Port A

Port P

Port T

Port B

Solenoid

“A”

Solenoid

“B”

Model Code

3 4 5 876 9 101 2

Model Series

D – Directional valve

G – Subplate/manifold mounted

4 – Solenoid operated

V – Pressure rating

250 bar (3600 psi)

Spool type

0 – Open center (all ports)

2 – Closed center (all ports)

6 – Closed center (P only)

7 – Open center (T blocked)

8 – Tandem center P to T)

33 – Closed center (bleed A & B)

Solenoid energization identity

V – Solenoid “A” is at port “A” end and/

or solenoid “B” is at port “B”

end, independent of spool type

Omit for U.S. ANSI B93.9 standard

requiring solenoid “A’’ energization to

connect P to A and/or solenoid “B’’ to

connect P to B, independent of

solenoid location.

NOTE: Type “8” spool valves conform to

both U.S. and European solenoid

designations. When ordering an “8” spool,

designate a “V” in the model code.

Spool spring arrangement

A – Spring offset, end-to-end

AL – Same as “A” but left hand build

B – Spring offset, end to center

BL – Same as “B” but left hand build

C – Spring centered

N – No-spring detented

Interface

2 – ISO/DIS 4401-02-02

Voltage options

(The DG4V-2 valve is available only

with DC coils.)

Coils for use with DC control systems:

G – 12 V DC

H – 24 V DC

HL – 24 V DC, low power

Coils for use with AC control systems

via rectifier plug (Refer to tables

below).

DJ – 98 V DC (rectified 110/120V

50/60 Hz)

EJ – 196 V DC (rectified 220/240V

50/60 Hz)

Coil type

U – DIN 43650 connector

KU – Mobile series (top exit lead, no

connector)

Tank pressure rating

6 – 160 bar (2300 psi)

Flag symbol

M – Electrical options and features

Design

Subject to change. Installation

dimensions same for designs 10 thru 19.

Electrical Connectors to

ISO 4400 (DIN 43650)

Order separately by part number. A

flying lead connector and an Amp Jr

Timer connector are also available.

Contact your Vickers representative for

details.

The cable entry on these plugs can be

repositioned to 90 intervals by

reassembly of the contact holder relative

to the plug housing.

The cable entry is PG 11 for cable

6-10 mm (0.24” to 0.39” dia).

Connectors with rectifier

Connectors w/o indicator lights

Part No. Color Used on solenoid coil

710775 Black Solenoid B

710776 Gray Solenoid A

Connectors with LED

Voltage

Part Number

Gray (sol. A) Black (sol. B)

12-24V 977467 977466

Coil code AC input voltage 50/60 Hz

Connector with rectifier NO LED

Gray (sol. A) Black (sol. B)

Connector with rectifier with LED

Gray (sol. A) Black (sol. B)

DJ 110/120V 873761 873760 873778 873777

EJ 220/240V 873776 873775 873780 873779

Operating Data

Performance data is typical with fluid at 36 cSt (168 SUS) and 50 C (122 F).

Pressure limits:

P, A and B ports:

using 25W solenoid coils

using 12W solenoid coil type HL

T port

250 bar (3600 psi)

165 bar (2400 psi)

160 bar (2300 psi)

Flow rating:

Full power (25W) coils

Low power (12W) coil, type HL

30 l/min (7.9 USgpm)

20 l/min (5.3 USgpm)

Relative duty factor Continuous; ED = 100%

Type of protection

Coils with ISO 4400 connector fitted correctly

Coil winding

Coil encapsulation

IEC 947 class IP65

Class H

Class F

Permissible voltage fluctuation:

Maximum

Minimum

110% rated

90% rated

Typical response times at 100% rated volts measured from

application/removal of voltage at conditions:

flow rate P-A, B-T

pressure

Spool type 2C full stroke:

energizing

de-energizing, no suppression

de-energizing, diode suppression

Spool type 2C to flow opening/closing point:

energizing

de-energizing, no suppression

de-energizing, diode suppression

30 l/min (7.9 USgpm)

125 bar (1800 psi)

45 ms

30 ms

110 ms

25 ms

100 ms

Power consumption, DC solenoids at rated voltage and 20C (68F):

Type DJ, 98V

Type EJ, 198V

Type G, 12V

Type H, 24V

Type HL, 24V, low power

25W

12W

Hydraulic fluids

Filtration requirements

Refer to appendix

Temperature limits

Mass, approximate

Single solenoid valve

Double solenoid valve

0,93 kg (2.1 lb.)

1,3 kg (2.9 lb.)

Installation data:

Mounting attitude

No restrictions except for no-spring detented model

DG4V-2-*N. It should be mounted with the spool

axis horizontal. This model type may be affected by

severe vibration or shock, especially if a solenoid is

not held energized.

Operating Considerations

1. Dependent on the application and system filtration, any sliding spool

valve if held shifted under pressure for long periods of time, may

stick and not move readily due to fluid residue formation. It may need

to be cycled periodically to prevent this from happening.

2. Surges of fluid in a common tank line serving two or more valves can

be of sufficient magnitude to cause inadvertent shifting of these

valves. This is particularly critical in no-spring detented models.

Separate drain lines are recommended.

Performance Data

Typical with mineral oil at 36 cSt

(168 SUS) and a specific gravity of 0.87.

Maximum Flow Rates

Performance conditions:

Looped flow P-A plus B-T

(or P-B plus A-T).

Solenoid coil warm and operating at

90% rated voltage.

Standard, 25W coils

Types G, H Types DJ, EJ

Low Power, 12W coil

Type HL

psi bar

3600

3000

2000

1000

250

200

150

100

0 5 10 15 20 25 30

012345678

l/min

USgpm

Flow Rate

Pressure

psi bar

3600

3000

2000

1000

250

200

150

100

0 5 10 15 20 25 30

012345678

l/min

USgpm

Flow Rate

Pressure

psi bar

2400

2000

1000

165

150

100

0 5 10 15 20 l/min

0123455.3USgpm

Flow Rate

Pressure

1 & 2

Spool Type Curve Number

0, 2

7, 8

33, 6

Asymmetrical Flow Rates

Consult Vickers with applications details

if either of the following usages are

required:

(a) Single flow path, i.e.

P-A, P-B, A-T or B-T.

(b) When flow rates between P-A, B-T

(or P-B, A-T) are significantly

different, e.g. A and B connected to a

cylinder having a large differential

area.

Pressure Drops

100

Pressure drop

psi bar

180

160

140

120

100

0 5 10 15 20 25 30

012345678

01234

bar

120

Pressure drop

psi

1800

1600

1400

1200

1000

800

600

400

200

l/min

USgpm

l/min

USgpm

0 5 10 15

12 3

Refer to appendix for other viscosities

Flow Rate Flow Rate

Pressure drops in offset positions

except where otherwise indicated

Spool/spring

arrangement

Spool positions

covered

P to A P to B A to T B to T P to T B to A or

A to B

0A(L) Both 6 6 3 3 – –

0B(L) & 0C

De-energized

Energized

–

2A(L) Both 3 3 4 4 – –

2B(L) & 2C Energized 4 4 5 5 – –

2N Both 4 4 5 5 – –

6B(L) & 6C

De-energized

Energized

–

7B(L) & 7C

De-energized

Energized

–

8B(L) & 8C All 1 1 1 1 2 –

33B(L) & 33C

De-energized

Energized

–

Installation Dimensions

13,0 (0.51)

to remove connector

36,0

(1.42)

50,0

(1.97)

Single solenoid models

Double solenoid models

Port A

Port P

Port T

Port B

126,0 (4.96)

35,5 (1.4)

17,75 (0.7)

35,5 (1.4)

17,75 (0.7)

180,0 (7.09)

65,0 (2.56) 65,0 (2.56)

30,125

(1.19)

19,5

(0.77)

77,0

(3.03)

13,0 (0.51)

to remove connector

DG4V-2-A(L)

DG4V-2-B(L)

DG4V-2-C Spring centered

DG4V-2-N No-spring detented

Spring offset

Refer to double solenoid models

below for port designations.

77,0

(3.03)

Dimensions are shown for

standard connectors. For

connectors with rectifiers and/

or LED this dimension varies

up to 84,0 (3.31) maximum.

Dimensions shown in mm (inches)

3rd angle

projection

SystemStak Systems

Reduce 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.

The design of this range of small

stacking valves is based on the well

proven Vickers DGM**-3, size 3 System

Stak valves, and offers opportunities for

achieving very small, compact control

assemblies, especially when used with

multi-point subplates.

Reduce Cost

SystemStak valves eliminate intervalve

piping and leak-prone tube and pipe

connections. Installed cost is less than

when using conventional valves.

Easy to Understand,

Easy to Design

SystemStak valves have all the internal

passages necessary to serve the

directional valve mounted on top of

them. Mounting surfaces and port

patterns are to the international

standard: ISO/DIS 4401-02-02.

Rugged and Reliable

Internal working parts are produced

from hardened steel and mounted in

free machining mild steel bodies. All

seals are Viton.Excellent reliability is

ensured. Working parts on most models

are accessible without removing valves

from an assembled stak.

Viton is a registered trademark of E.I. DuPont

Valve Placement

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

DGMFD Flow divider

DGMFN Flow control

DGMFG Pressure compensated

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

DGMFD Flow divider

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 DDMFN

(meter-out), the DGMPC should be

nearest the directional valve.

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.

PT BA

Figure 1.

PT BA

Figure 2.

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.)

PT BA

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). 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.

PTBA

Figure 4.

Figure 5.

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.

Figure 6.

Figure 7.

BABABA