VRG- L□

Reducing valve
Pressureadjustment
screw

Rod7MPaSpecial check valve

Internal ﬁlter

Internal ﬁlter

CYL.

P(R)

(Secondary side)(Primary side)

Internal hydraulic presCYL. hydraulic port
Secondary side
hydraulic pressure

Reducing valve model VRG

sure of circuit can bepartially reduced.

P(R) hydraulic port

This is a non-leak typePrimary side
hydraulic pressurethat requires no drain.

Specifications
VRG-LG

VRG-LT

VRG-LS

Manifold mounting

Piping mounting

VHD linking

ModelMounting, piping methods
Primary side hydraulic pressure range

MPa2‒7

Secondary side hydraulic pressure rangeMPa

1‒6Allowable min. differential pressure

MPa1

Proof pressure

MPa

10.5

Pressure change per revolution
Orifice area
Operating temperature

MPa/rev

0.5mm 228.1℃0‒70General mineral based hydraulic oil (ISO-VG32 equivalent)Fluid used
Mass

0.9kg

1.0

1.0

● Fluorocarbon has been adopted for seal sections where cutting fluid is applied, as a measure for the use of chlorine-based
cutting fluid (this is not thermal resistant specification).
● Avoid overpressure to CYL. hydraulic port of the valve if there is a risk of back pressure in secondary circuit.
：The setting should be performed so that the differential pressure between primary side hydraulic pressure and secondary side
hydraulic pressure may exceed 1 MPa. (Example：If primary side hydraulic pressure is 5 MPa, secondary side hydraulic pressure
should be from 1 to 4 MPa.)

indicates made to order.

Secondary side hydraulicpressure adjustment screw
M8×1.2545

Locknut M8

Mounting details

Max. ø 6CLY. hydraulic port

17119

1168

17P(R) hydraulic port
(primary side)
O-ring P9(ﬂuorocarbon hardness Hs90)

Hydraulic pressure

2-M839VRGCYL. hydraulic port
(secondary side)
O-ring P9(ﬂuorocarbon hardness Hs90)

22.5

19.5
3933
6.8

Mounting hole2- ø92233

Hydraulic pressure

(68)

ø37.5

With internal filter (P & CYL. hydraulic ports)

28

Manifold mounting

Min. 6

VRG-LG

Max. 18

Reducing valve

Dimensions

918
11

918

20

31

7(45)

Max. ø6P(R) hydraulic port

For manifold piping, the mounting
surface finish must be no rougher
than Rz6.3 (ISO4287:1997).

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VRG- L□Reducing valve

7MPa

Dimensions
With internal filter (P & CYL. hydraulic ports)
Secondary side hydraulicpressure adjustment screw
M8×1.25

ø37.5

45

Locknut M8

Max. 18

Piping mounting

Min. 6

VRG-LT

CYL. hydraulic port
(secondary side)
Rc1/4

P(R) hydraulic port
(primary side)
Rc1/4

68

39

Mounting hole2- ø 9222243

39

119

Mounting hole2-ø 973131
6.8

45

VHD linking

6.8

22.5

19.5

VRG-LS

Arrow A view

7↑A

With internal filter (P & CYL. hydraulic ports)

VHD linking measurement

VRGVHD

Coupling valve
model VHD-LGB

90

110 when clamping(138 when unclamping)

15

Reducing valve

CYL. BP(R)model VRG-LS

119

CYL. A hydraulic port
(primary side)
Rc1/4

6839
2222

35.5

4339

Mounting hole2- ø 9VRGø 6 hole
P(R) hydraulic port
(primary side)

CYL.B hydraulic port
(secondary side)
Rc1/4

Mounting hole2-ø 9Reducing valve

45

Locknut M8

Max. 18

ø37.5

Min. 6

CYL. A
Secondary side hydraulicpressure adjustment screw
M8×1.25

19.5

7313145

6.8● Structure is such that when pressure on secondary side (lowpressure side) drops due to temperature change or oil leak,flow channel to primary side (high pressure side) is opened
to replenish oil until pressure reaches set pressure.

6.8

22.5

22.5

Arrow B view

7

↑B
● Pressure is not supplemented when primary side is separated
from hydraulic pressure source.
● Mounting screws are not included.

To download CAD data / To get updated information, visit www.pascaleng.co.jp

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