CURRENT-CONTROLLED TYPE PRESSURE REDUCING VALVE（EHG3）
This current-controlled type pressure reducing valve controls the pressure by controlling theinput current of the DC solenoid in the pilot section. This allows continuous and steplessremote control of the pressure.
By adopting this type of valve, multi-step pressure control, programmed pressure control andremote control are enabled easily while promoting labor savings, automation andsimplification of the hydraulic system.

■Features
1. Continuous and stepless remote control of pressure
2. The valve body and control amplifier can be separated to allow installation under harshconditions.
3. Program control is possible.
4. Compared with a servo valve, the valve is less susceptible to foreign matter.
5. Quick response■Applications
1. Tension control for paper, steel belts, steel wire, etc.
2. Pressure control for presses and rolling mills
3. Pressure application control for vibration testing machines and fatigue testing machines
4. Extrusion force control for extruders and injection molding machines
5. Positioning control by balancing with mechanical force
6. Remote pressure control for hydraulic equipment■Description of the model designation

EHG3ｰBG5（K）Rｰ03
Without Check ValveWith Check Valve

Nominal size
With/without safety valve R: With safety valve
With/without safety valve No code: Without check valve
K: With check valve
Pressure adjustment range 5: 1.5 to 21 MPa
Piping method G: Gasket-connection type
Construction B: Balance piston typeMax. operating pressure 3.21 MPa
Current-controlled type pressure reducing valve■Specifications
Nominalsize

Ratedflow(L/min)Max. flow(L/min)03408006120190Max. operatingpressure(MPa)

Pressure adjustment
range (at 38 ㎜2/s)(MPa)

Hysteresis(%)

Step response(sec) (NOTE 1)

211.5 to 21

40.2

Frequency
response(Hz) (NOTE 2)

Model

4.0

EHG3ｰBG5（K）Rｰ03

3.0

EHG3ｰBG5（K）Rｰ06

NOTE 1: Duration required for pressure rise from 0 to 21 MPa (Load capacity: 12,000 c㎝ )NOTE 2: 10±5 MPa, -3 dB evaluation (Load capacity: 12,000 ㎝3)
3●Solenoid characteristics
Model

Coil input current (mA)

Coil resistance (Ω)

SDM2ｰ02AMｰC

0 to 1,000

13●Subplate model
ModelConnection port Rc

SHQ03ｰ03T1

3/8SHQ06ｰ06T1

3/4

When a subplate is necessary, use SHQ**-**T1 (page B-19) for a standard
sequence valve. Please note that although the IN and OUT ports of avalve correspond to the IN and OUT ports of the subplate, the R port andthe DR port of the valve must be connected to the DR port and the PLT
port of the subplate respectively.

-G−5G
CURRENT CONTROLLED TYPE CONTROL VALVES● The recommended drive unit for this valve is TOYOOKI’s control
amplifier (page G-7).
● The valve can be used for fluids equivalent to ISO VG32 to 56.
● The allowable maximum fluid temperature is 60ºC.
● Bleed the air completely through the air bleed hole of thesolenoid valve. It may cause pressure fluctuation or abnormalnoise.
● The pressure in the reduced pressure circuit should be set
lower than the main circuit pressure by 1.0 MPa or more.

■Outside dimensions
NOTE: When a subplate is necessary,use SHQ**-**T1 (page B-19) fora standard sequence valve.
please note that although theIN and OUT ports of a valve
correspond to the in and outports of the subplate, the R
port and the DR port of thevalve must be connected to thedr port and the PLT port of thesubplate respectively.

03
EHG3ｰBG5（K）Rｰ 06

Wire outlet G1/2
Air bleed (3-M4)(Hex. socket head screw)
Manual screw(Return when the current
control is used.)
Lock nut(O-ring)
Safety valve adjustment screw

Locknut

Pressure gauge outlet RC1/4

62-∅6(O-ring)

In case with the check valve

Unit: mmModelA

B

C1C2C3DEFGHJKLNPQG

EHG3ｰBG5（K）Rｰ03

882166798170.59967123.55511929433621.5—

EHG3ｰBG5（K）Rｰ06

10223375

98

173.510280

140.55682430604939—

CURRENT CONTROLLED TYPE CONTROL VALVES

ModelSTUW

XYZ

EHG3ｰBG5（K）Rｰ03

21.5

117410JIS B 2401ｰ1AP21

JIS B 2401ｰ1AP115.1

5.4

EHG3ｰBG5（K）Rｰ06

211611410

JIS B 2401ｰ1AG30

JIS B 2401ｰ1AＰ166.8

7.3

G−6Mass (kg)Without check valve With check valve