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EHPR98-G38

PROPORTIONAL PRESSURE REDUCING / RELIEVING CARTRIDGE VALVE

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Overview

Description

The EHPR98-G38XXX 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 standard plunger is recommended in applications with inlet pressures up to 34 bar (500 psi) that require faster response with increased volume at the control port. Minimum volume at the control port may cause the valve to become unstablet. For applications with inlet pressures up to 69 bar (1000 psi) and decreased volume at the control port the damped plunger is recommended.

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:
  • 44.8 bar (650 psi) At port 1
  • 34.5 bar (500 psi) At port 2 (standard plunger)
  • 69 bar (1000 psi) At port 2 (damped plunger)
  • 34.5 bar (500 psi) At port 3
Proof pressure:
  • 207 bar (3000 psi) Ports 1, 2
  • 54 bar (780 psi) Port 3
Burst pressure:
  • 249 bar (3625 psi) All ports pressurized
Control pressure at maximum control current:
  • 21 bar (305 psi) EHPR98-G38A
  • 25 bar (363 psi) EHPR98-G38B
  • 30 bar (435 psi) EHPR98-G38C
Flow Ratings
Flow rating:
  • 23 lpm (6 gpm)
Maximum internal leakage:
  • 50 ml/min (3.1 in³/min) At 34.5 bar (500 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
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
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
Hysteresis:
  • 4 % At 120 Hz PWM
EHPR98-G38_Perf1(2022-02-24) EHPR98-G38_Perf2(2022-02-24) EHPR98-G38_Perf3(2022-02-24) EHPR98-G38_Perf4(2022-02-24) EHPR98-G38_Perf5(2022-02-24) EHPR98-G38_Perf6(2022-02-24) EHPR98-G38_Perf7(2022-02-24) EHPR98-G38_Perf8(2022-02-24) EHPR98-G38_Perf9(2022-02-24)
EHPR98-G38_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-G38_Order(2022-02-24)

Model Options

EHPR98-G38DFG-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)
F Plunger Option
CODE
DESCRIPTION
BLANK
Standard Version
F
Fast Responding
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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