CG2V-6*W-10 relief valve

February 1996 GB-2323A

CG2V-6/8, 10 Series; CG5V-6/8, 20 Series

Typical Section

Basic Characteristics

Maximum pressure 350 bar. . . . . . . . . .

(5000 psi)

Maximum flow 400 L/min. . . . . . . . . . . . .

(106 USgpm)

Mounting face to ISO 6264:

CG*V-6 valves AR-06-2-A. . . . . . . . . . . .

CG*V-8 valves AS-08-2-A. . . . . . . . . . .

General Description

These two-stage valves are used to limit

or control pressure by directing up to the

total system fluid flow to reservoir when

system pressure reaches the setting of

the valve. System actuators are thus

protected against overload.

Each relief valve incorporates a vent

port that can be connected to a separate

pilot control valve to remotely control or

unload system pressure.

Two types of valve are presented in this

catalog:

F CG2V-***, 10 series: relief/sequence

valve with integral manual adjustment

of pressure setting.

F CG5V-***, 20 series: relief valve with

solenoid operated pilot valve for

loading/unloading.

A third type, KCG-*, 10 series, with

proportional pilot control valve, is

described in catalog 2324.

Features and Benefits

F Close matching to application

requirements from choice of four

adjustment control ranges covering

3 to 350 bar (44 to 5000 psi).

F Electrical on/off load from solenoid

controlled models.

F Remote parallel control by other pilot

valves connected to “vent” port.

F High machine productivity resulting

from full system flow being available

for work output until system pressure

is very close to valve setting.

F Pressure override optimized without

detriment to other performance

parameters.

F Excellent repeatability and stable

performance from cartridge-type

design of mainstage parts.

F Low off-load power wastage.

F International mounting interfaces.

F Low installed cost and space

requirement from high power/size

ratios (more than double that of many

conventional designs).

Pressure Relief and Sequence Valves

Vickers

Pressure Relief

XP T

Side

drain

port

Y If a valve with an integral, reverse free-flow

check is required, use a type RCG valve,

as in catalog 429.

XP T

For Valves with Manual Adjustment Only

(F3-)

Fluid compatibility

Blank = Antiwear hydraulic oil

(class L-HM), invert emulsion

(class L-HFB) or water glycol

(class L-HFC)

F3 = As above or phosphate

ester (class L-HFD)

Mounting surface, ISO 6264

6 = AR-06-2-A

8 = AS-08-2-A

Pressure adjustment

control range

B = 3 to 70 bar (44 to 1000 psi)

C = 3 to 140 bar (44 to 2000 psi)

F = 3 to 210 bar (44 to 3000 psi)

G = 3 to 350 bar (44 to 5000 psi)

Type of manual adjustment

K = Micrometer with keylock

M = Micrometer without keylock

W = Screw/locknut

Drain options

1 = External drain from side port:

CG2V sequence-version

(see “Functional Symbols”)

Omit for CG2V relief-version and

for CG5V models

Manual override options,

CG5V only

Override in solenoid end

Blank = Plain override

H = Water-resistant override,

DC solenoid only

Z = No override

CG2V-* * * -1*

1 2 3 4 11

(-1)

For Valves with Manual Adjustment Plus Electrical Load/Unload

(F3-)CG5V-* * *

1 2 3 4 9

-D(-*)-(V)M- *** (-L)- * 5-2*

6 7 8 10 11

Solenoid energization identity,

CG5V only

V = Solenoid “A” at port A end of

pilot valve (energizing “A”

connects P to B pilot ports):

German practice.

Omit for solenoid identity “B”

(energizing “B” connects P to B

pilot ports): USA ANSI B93.9/

NFPA standard.

Solenoid connection typeY,

CG5V only

U = ISO 4400 (DIN 43650)z

FW =

I NPT thread conduit box

FTW=

I NPT thread conduit box and

terminal strip

FJ = M20 thread conduit box

FTJ = M20 thread conduit box and

terminal strip

Y Other connection types as shown in

catalog 2015 (DG4V-3/3S) may be made

available depending on quantities.

z Female connector to be supplied by user.

Indicator lights, CG5V only

Option for solenoid connection types

FTW and FTJ, see position

L = Lights fitted

Omit if lights not required

For U-code solenoid, use plug with

integral light, see “Electrical Plugs and

Connectors”

Functional Symbols

Relief valve, manually adjusted,

CG2V-***-1* model

Sequence valve, manually adjusted,

CG2V-***-1-1* modelY

Solenoid controlled relief valve, pilots

internally drained, CG5V-***-D-2* model

Model Codes

Coil rating, CG5V only

See “Operating Data” for further

information

A = 110V AC 50 Hz

BJ = 110V AC 50 Hz/120V AC 60 Hz

C = 220V AC 50 Hz

DJ= 220V AC 50 Hz/240V AC 60 Hz

G = 12V DC

H = 24V DC

J For 60 Hz or dual frequency.

Design number

10 series for CG2V valves

20 series for CG5V valves

Subject to change. Installation

dimensions unaltered for design

numbers 10-19 and 20-29 inclusive.

Operating Data

Data is typical with oil at 22 cSt (106 SUS) and at 50_C (122_F)

Maximum pressures:

Ports P and X

Port TY:

CG2V valves, 10 series

CG5V valves, 20 series

YFor relief valves this is normally connected

directly to reservoir because back pressure

here adds to the effective setting of the

valve.

350 bar (5000 psi)

100 bar (1500 psi)

CG5V, 20 series valves are designed to satisfy

the needs of most applications. Consult your

Vickers representative about an alternative

model if:

a) Valves are required to remain pressurized

for long periods without frequent switching,

and/or

b) Back pressure on port T is required to rise

above 100 bar (1500 psi).

Pressure adjustment ranges See model code

Maximum flow rates:

CG*V-6

CG*V-8

200 L/min (53 USgpm)

400 L/min (106 USgpm)

Vent B flow, port X, when used

BSee “Vent Function” explanation two

pages on.

3 L/min (0.8 USgpm) with valve at max.

flow rate

Drain flow, CG*V valves, when manual

adjuster and/or pilot valve (i.e. CG5V)

are in operation:

CG*V-6

CG*V-8

1,1 L/min (0.3 USgpm)

1,8 L/min (0.47 USgpm)

Response time, CG5V valves

Typical time from applying signal at

solenoid, with valve vented, until relief

main valve closes; with minimum

pressurized volume

170 ms

Hydraulic fluids and fluid temperatures See three pages on

Temperature limits See three pages on

Thermal stability

(pressure/temperature change)

0,2 bar/_C (1.6 psi/_F)

Spare parts/service information:

CG*V valves

Publication no. 40751

100

150

200

250

300

350

bar

1000

2000

3000

4000

5000

psi

Flow rate

100 200 400

20 40 60 80

L/min

USgpm

300

100

Pressure

Electrical Data, CG5V Valves

Coil voltages

See model code

Permissible voltage fluctuation:

Maximum

Minimum

See “Temperature Limits”, two pages

90% rated (see model code )

Relative duty factor Continuous; ED = 100%

Types of protection:

ISO 4400 coils with plug fitted correctly

Conduit box

Coil winding

Lead wires (coils type “F**”)

Coil encapsulation

IEC144 class IP65

Class H

Class F

Power consumption for coils listed in

model code :

AC coils:

Single frequency coils at 50 Hz

Dual frequency coils at 50 Hz

Dual frequency coils at 60 Hz

DC coils, at rated voltage and

20_C (68_F):

Type G, 12V DC

Type H, 24V DC

Initial z Holding

VA (RMS) VA (RMS)

225 39

265 49

260 48

30W –

z 1st half cycle; solenoid armature fully

retracted

Performance Data

Typical with oil at 22 cSt (106 SUS) and

at 50_C (122_F)

Pressure Override When Relieving

CG2V-8 examples

bar

psi

100 200 300

0 20 40 60 80 USgpm

Flow rate

400

100

Pressure

L/min

XP T

Vent valve

Venting

System pressure can be dropped to

near-zero by connecting vent port X

to reservoir through a suitable pilot

valve, e.g:

Pressure Override When Venting

Control Data for CG2V Valves

Manual adjustment of pressure setting

described in “Installation Dimensions”.

Hydraulic Remote Control

Remote adjustment of pressure setting

can be made by a pilot relief valve,

substituted for the vent valve in the

diagram. Suitable pilot relief valves are

described in catalogs 411 (type C-175

valves) and 409 (type CGR-02 valves).

Control Data for CG5V Valves

Vent Function

The solenoid operated pilot valve is

Vickers model type DG4V-3S, with spool

type “0B” (ref. catalog 2015). When the

solenoid is de-energized, the CG5V

relief valve is unloaded by venting the

pilot drain to port T. Note that any back

pressure at port T is additive to the

minimum possible unloaded pressure,

and is also additive to the on-load

pressure setting.

When the solenoid is energized the pilot

flow is blocked to bring the relief valve

on load. For this function port X would

normally be blocked (e.g. no connection

from the mounting face). Further remote

control pressure settings are possible by

connecting port X to suitable pilot relief

valves via other DG4V-3S type

directional control valves.

Hydraulic Fluids

All valves can be used with:

Antiwear hydraulic oils (class L-HM)

Invert emulsions (class L-HFB)

Water glycol (class L-HFC)

Phosphate ester (class L-HFD), adding

“F3-” prefix at model code .

The extreme viscosity range is from

500 to 13 cSt (2270 to 70 SUS) but the

recommended range is 54 to 13 cSt

(245 to 70 SUS).

For further information about fluids see

“Technical Information” leaflet 920.

Temperature Limits

Minimum ambient: –20_C (–4_F)

Maximum ambient:

For CG2V valves: 70_C (158_F)

For CG5V valves with coils listed in

model code and at 110% of rated

voltage:

Coil type and

frequency

Max. ambient

temperature

Dual frequency coils

at 50 Hz

at 60 Hz

65_C (149_F)

Single frequency (50 Hz) coils

at 50 Hz 65_C (149_F)

DC coils 70_C (158_F)

Fluid temperatures (all models)

Petroleum

oil

Water-

containing

Min. –20_C

(–4_F)

+10_ C

(+50_F)

Max.* +70_ C

(+158_F)

+54_ C

(+129_F)

* To obtain optimum service life from both

fluid and hydraulic system, 65_C (150_F)

normally is the maximum temperature

except for water-containing fluids.

For synthetic fluids consult fluid

manufacturer or Vickers

representative where limits are outside

those of petroleum oil.

Whatever the actual temperature

range, ensure that viscosities stay

within the limits specified in the

“Hydraulic Fluids” section.

Contamination Control

Requirements

Recommendations on contamination

control methods and the selection of

products to control fluid condition are

included in Vickers publication 9132 or

561, “Vickers Guide to Systemic

Contamination Control”. The book also

includes information on the Vickers

concept of “ProActive Maintenance”.

The following recommendations are

based on ISO cleanliness levels at

2 mm, 5 mm and 15 mm. For products in

this catalog the recommended levels

are:

Up to 210 bar (3050 psi) 19/17/14. . . . .

Above 210 bar (3050 psi) 19/17/14. . . .

Installation Dimensions in mm (inches)

3rd angle

projection

62_

For CG2V-***-1-1* models (sequence valve application):

(

I BSPF) drain port, supplied plugged

45,0 (1.8) for removal

of protective cap

7,5 (0.29) A/F

Turn clockwise to increase

pressure setting

17,0 (0.67) A/F

77,5 (3.1)

16,0 (0.63)

100,0 (4.0)

CG2V-***-1*

models

122,0 (4.8)

CG2V-***-1-1*

models

Alternative vent port G

(

I BSPF).

Remove plug for access.

Port X

(vent port)

Port P Port T

With adjuster knob fully out:

196,0 (7.7) for CG*V-6 models

203,0 (8.0) for CG*V-8 models

25,0

(1.0)

18,0 (0.7) for key removal

Type K only:

Micrometer Adjustment Options:

“K” or “M” in Model Code

“K” Feature

To adjust pressure setting, insert key

and turn clockwise. Turn micrometer

knob clockwise to increase pressure

setting; counter-clockwise to decrease

setting. When the key is removed the

knob can spin freely without affecting the

pressure setting.

CG2V Models

Model A B C D E rad. Ø F (dia) G

CG*V-6 58,0

(2.3)

35,0

(1.4)

68,0

(2.7)

35,0

(1.4)

12,0

(0.5)

20,0

(0.78)

79,0

(3.1)

CG*V-8 42,0

(1.7)

39,0

(1.54)

83,0

(3.3)

30,0

(1.2)

16,0

(0.63)

26,0

(1.02)

103,0

(4.1)

Model H Ø J (dia) K L M

(AC coils)

(DC coils)

CG*V-6 82,0

(3.23)

13,5

(0.53)

176,0

(7.0)

20,0

(0.78)

160,0

(6.3)

170,0

(6.7)

CG*V-8 106,0

(4.2)

17,0

(0.7)

183,0

(7.2)

25,0

(1.0)

169,0

(6.65)

179,0

(7.1)

With Type “U” Coil Connection

(“U” at model code )

For dimensions “B” and “M”, see previous page.

z May vary dependent on plug source.

Y Plug not supplied; order separately if required.

For available plug types see section “Electrical Plugs and

Connectors”.

With Type “F” Coil Connection

(“F(T)J” or “F(T)W” at model code )

J Ref. model code :

Codes “FJ” and “FW”: 2 lead wires for each solenoid,

approx.150,0 (6.0) long. M3 terminals provided for

customer connection.

Codes “FTJ” and “FTW”: lead wires connected into terminal

strip suitable for M3 terminals on customer connection.

For dimensions “B” and “M”, see previous page.

186,0 (7.4) J

For manual override type “H”:

15,0 (0.6)

AC solenoid: 45,0 (1.8)

DC solenoid: 61,0 (2.4)

For coil removal:

Solenoid identity (printed on

nameplate of pilot valve) is:

“Sol. A” to German practice

“Sol B” to ANSI/NFPA standard

(For solenoid identity methods

see “Model Code” )

13,0 (0.5) for

plug removal

For manual override type “H”:

15,0 (0.6)

AC solenoid: 45,0 (1.8)

DC solenoid: 61,0 (2.4)

For coil removal:

Solenoid identity (printed on

nameplate of pilot valve) is:

“Sol. A” to German practice

“Sol B” to ANSI/NFPA standard

(For solenoid identity methods

see “Model Code” )

190,0 (7.5)

Ground (earth) connection:

Ø4,0 (0.16 dia) self-tapping

screw

CG5V Models

Valve locating pin

Port T

(outlet to reservoir)

Port P (pressure inlet)

Valve locating pin

Port X, vent or

remote control port

Port X, vent or

remote control port

Port T

(outlet to reservoir)

Port P (pressure inlet)

CGVM-6-10-R Subplate

55,0

(2.2)

21,0

(0.83)

20,0

(0.79)

2 ports, G1 (1I BSPF) x 19,0 (0.75)

min. depth full thread, from underside

Ø 7,5 (0.29 dia) x 6,0 (0.24)

deep, for valve locating pin

4 holes, Ø 11,0 (0.43 dia)

through, Ø 17,5 (0.68 dia)

spotface

(

I BSPF) x 12,0 (0.47) min.

depth full thread, from underside

4 holes tapped M12 x 21,0

(0.82) min. depth full thread

24,0

(0.95)

132,0 (5.2)

80,0

(3.15)

125,0 (5.0)

101,0

(4.0)

68,5

(2.7)

26,9

(1.06)

7,0

(0.27)

56,0 (2.2)

150,0 (6.0)

21,7

(0.85)

Views on Bottom Faces of Valves

See also “Mounting Surfaces”.

All O-seals supplied.

CG*V-6 CG*V-8

M (min.)

A (min.)

B (min.)

D (min.)

K (min.)

Q (min.)

Ø 7,5 (0.29 dia) x 6,0

(0.24) deep min.

Plug or omit if this vent/hydraulic

remote port is not to be used

Mounting Surfaces, ISO 6264

AR-06-2-A

AS-08-2-A

When a subplate is not used a raised

pad must be provided for mounting. The

pad must be flat within

0,001 mm/100 mm (0.0001I/10I) and

smooth within 0,8 mm (32 min).

Dimensional tolerances are

"0,2 mm (0.008I) except where

indicated.

Port functions

P = Pressure inlet

T = Outlet to reservoir

X = Vent, or remote pilot control port

Size A B C D E F H J K L

AR-06 80 (3.2) 13,1 (0.5) 53,8 (2.12) 13,1 (0.5) 47,5z (1.87) 22,1 (0.87) 22,1z (0.87) 0 (0) 13,1 (0.5) 53,8 (2.12)

AS-08 118 (4.7) 35,0 (1.4) 66,7 (2.63) 16,3 (0.7) 55,6 (2.19) 33,4 (1.35) 11,1 (0.44) 23,8 (0.94) 16,0 (0.63) 70,0 (2.76)

Size M N Ø P (dia) Q Ø T (dia) Ø X (dia) Y thread x min. full thread depth

AR-06 13,1 (0.5) 26,9 (1.06) 14,7 (0.58) 80 (3.2) 14,7 (0.58) 4,8 (0.19) M12 x 21 (

I UNF x 0.83) B

AS-08 16,0 (0.63) 35,0 (1.38) 23,4 (0.92) 102 (4.0) 23,4 (0.92) 6,3 (0.25) M16 x 30 (

I UNF x 1.2) B

Y Tolerance on bolt and pin locations "0,1 (0.004).

z These ISO standard dimensions can be used, but improved flow paths to and from valve are

obtained by using 48,0 (1.89) instead of 47,5 (1.87), and 22,6 (0.89) instead of 22,1 (0.87).

B ISO standard does not give UNC bolt sizes. These are recommended equivalents to metric

sizes specified in the standard.

Installation Data

Mounting Attitude

Unrestricted.

Subplates

For CG*V-6 valves see type

CGVM-6-10-R on previous page.

For CG*V-8 valves consult your Vickers

representative.

Mounting Bolts/Torques

For CG*V-6 valves: bolt kit BKCG2V-6.

Bolts should be torqued to 103-127 Nm

(76-94 lbf ft), with threads lubricated.

For CG*V-8 valves: bolt kit BKCG2V-8.

Bolts should be torqued to 257-315 Nm

(190-232 lbf ft), with threads lubricated.

Mass (approx.)

CG2V-6 3,5 kg (7.7 lb). . . . . . . . . . . . . . .

CG2V-8 4,4 kg (9.7 lb). . . . . . . . . . . . . . .

CG5V-6:

With AC solenoid 5,0 kg (11 lb). . . . . . . .

With DC solenoid 5,2 kg (11.5 lb). . . . . .

CG5V-8:

AC solenoid 5,9 kg (13 lb). . . . . . . . . . . .

DC solenoid 6,1 kg (13.5 lb). . . . . . . . . .

Electrical Plugs and Connectors

For CG5V valves with type F(T)J or F(T)W coils, see model code 8

For “FTJ” or “FTW” at model code

F 1.For DC coils the +ve lead(s) must be

connected to the terminal(s) marked +.

When using 3-wire incoming leads to

double solenoid valves (i.e. common

neutral) the inner pair of terminals must

be linked.

2. For correct light indication of energized

solenoid ensure that solenoid leads are

correctly connected: light terminals are

common with each outer pair of solenoid

terminals according to the side with +

mark.

8 For “FTJL” or “FTWL” at model code +

8 9

Terminal strip (part number 890345)

clips to cover and can be field-fitted

M3 x 0,5-6H screws (part

number 186006) 2 each end

Connections to solenoid A

(or B, according to model type) F

Connections to solenoid B

(or A, according to model type) F

Rubber gasket

Conduit box cover and nameplate

complete with sealing gasket and

4 screws

Anti-rotation tab ensures

correct orientation of cover

to junction box

28,50

(1.12)

30,00

(1.18)

Lights

2 lenses in cover

4 terminal screws M3 x 0,5-6H

(part number 02-113355)

Plugs for ISO 4400 (DIN 43650) Type

Coil Connection

For CG5V valves with type “U” coils

(model code )

The cable entry on these plugs can be

repositioned at 90_ intervals by

reassembly of the contact holder relative

to the plug housing. The cable entry is

Pg11 for cable Ø 6-10 mm (0.24-0.4I).

Terminal Strip and Lights

Ordering Procedure

Valves, subplates and bolt kits should be

ordered by full model code designation.

Order plugs by part number.

Order plugs separately by part number.

Voltage

Part number

Gray

(Sol.A)

Black

(Sol.B)

Without indicator light

– 710776 710775

With indicator light

12- 24V

100-125V

200-240V

977467

977469

977471

977466

977468

977470