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Valves - Electro-proportional Controls - Pressure Controls - Proportional Pressure Reducing/Relieving - Direct Acting - Pressure Rising with Current - Drop-in

EHPR98-G38H

PROPORTIONAL PRESSURE REDUCING / RELIEVING CARTRIDGE VALVE

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Overview

Description

The EHPR98-G38HXX is a direct-acting, spool-type, proportional, pressure reducing relieving valve. It is a 3rd generation hydraforce drop-in, flange mounted cartridge type valve for use with mineral based or synthetic (with lubricating properties) hydraulic fluids. The coil is an integral part of the valve and is not serviceable the regulated pressure is proportional to the input electrical current in the pressure ranges shown.

NOTE: * The 'H' pressure option is to be used in applications with inlet pressures that exceed 69 bar (1000 psi) at port 2. See standard and 'D' options for inlet pressures below 69 bar (1000 psi).

Features

  • Economical drop-in style
  • Mounting plate option
  • Several regulated pressure ranges
  • Retrofit option for EHPR98-T38
  • Quick response time
  • Screen option
  • Top-mounted connector
  • Low leakage
Pressure Ratings
Pressure rating:
  • 69 to 241 bar (1000 to 3500 psi) Port 2
  • 45 bar (650 psi) Port 1
  • 34.5 bar (500 psi) At port 3
Proof pressure:
  • 345 bar (5000 psi) Ports 1, 2 pressurized
  • 54 bar (780 psi) Port 3
Burst pressure:
  • 380 bar (5500 psi) Ports 1, 2 pressurized
  • 250 bar (3625 psi) Port 3
Control pressure at maximum control current:
  • 21 bar (305 psi) EHPR98-G38HA
  • 25 bar (363 psi) EHPR98-G38HB
  • 30 bar (435 psi) EHPR98-G38HC
Flow Ratings
Flow rating:
  • 23 lpm (6 gpm)
Maximum internal leakage:
  • 200 ml/min (12.2 in³/min) At 241 bar (3500 psi) de-energized
Other Ratings
Cycle life:
  • 10 million cycles
Environmental rating:
  • IP69K
Corrosion protection:
  • 960 hour salt spray per ASTM B117
Temperature Ratings
Operating fluid temperature:
  • -40 to 149 °C (-40 to 300 °F) HNBR
  • -26 to 204 °C (-15 to 400 °F) Fluorocarbon
Storage temperature:
  • -40 to 70 °C (-40 to 158 °F)
Ambient temperature:
  • -40 to 120 °C (-40 to 248 °F)
Fluids:
  • Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Unit weight:
  • 0.27 kg (0.60 lb)
Internal wetted surface area:
  • 148 cm² (23.0 in²)
Maximum control current:
  • 1.050 A At 10 V
  • 0.0880 A At 12 V
  • 0.720 A At 14 V
  • 0.525 A At 20 V
  • 0.440 A At 24 V
  • 0.360 A At 28 V
Coil resistance:
  • 4.83 ohm 10 V coil
  • 7.28 ohm 12 V coil
  • 10.05 ohm 14 V coil
  • 18.35 ohm 20 V coil
  • 29.54 ohm 24 V coil
  • 40.36 ohm 28 V coil
Valve inductance:
  • 77 mH 10 V coil
  • 118 mH 12 V coil
  • 165 mH 14 V coil
  • 301 mH 20 V coil
  • 446 mH 24 V coil
  • 680 mH 28 V coil
Hysteresis:
  • 4 % At 120 Hz PWM
EHPR98-G38H_Perf1(2022-02-24) EHPR98-G38H_Perf2(2022-02-24) EHPR98-G38H_Perf3(2022-02-24) EHPR98-G38H_Perf4(2022-02-24) EHPR98-G38H_Perf5(2022-02-24)
EHPR98-G38H_Dim(2022-02-24)
Cavity:
  • VC-G028 Standard configuration
Installation type:
  • Flange mounted
Orientation restriction:
  • None
Mounting screw torque:
  • 3 to 4 N-m (2.2 to 3.0 ft-lb)
Note:
  • For retro-fitting into older drop-in cavities and other mounting options, see "Mounting-options-for-G3-valves" technical reference
Mounting plate:
  • HF P/N 4595096 Use with standard VC-G028 cavity
  • HF P/N 4210226 Use with retrofit VC-T011 cavity
Mounting screw:
  • M5 x 0,8 x 12 mm long, HF P/N: 4002609 (sold separately) Use with standard VC-G028 cavity
  • M4 x 00.7 x 12 mm long, HF P/N: 4001015 (sold separately) Use with retrofit VC-T011 cavity
Seal kit:
  • SK-G028-X X=seal option
Ported test body:
  • HF P/N: 71612X0
EHPR98-G38H_Order(2022-02-24)

Model Options

EHPR98-G38HDG-H-J-KL-U
D Max Regulated Pressure
CODE
DESCRIPTION
A
21 bar (305 psi)
B
25 bar (363 psi)
C
30 bar (435 psi)
G Screen
CODE
DESCRIPTION
BLANK
NONE
S
100 Mesh Screen
H Line Body
CODE
DESCRIPTION
0
No Body
J Seal
CODE
DESCRIPTION
G
HNBR (Hydrogenated Nitrile Butadiene Rubber)
V
Fluorocarbon
P
Polyurethane
K Coil Voltage
CODE
DESCRIPTION
10
10 VDC
12
12 VDC
14
14 VDC
20
20 VDC
24
24 VDC
28
28 VDC
L Coil Termination
CODE
DESCRIPTION
EJ
E-Coil, AMP Jr.
ER
E-Coil, Deutsch
EY2A
E-Coil, Metri-Pack 150.2
U Mounting Plate
CODE
DESCRIPTION
BLANK
None
G
Standard Single Valve Plate
T
Retro-Fit Plate

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