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EHPR98-G38

PROPORTIONAL PRESSURE REDUCING / RELIEVING CARTRIDGE VALVE

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 EHPR98-G38_Perf2 EHPR98-G38_Perf3 EHPR98-G38_Perf4 EHPR98-G38_Perf5 EHPR98-G38_Perf6 EHPR98-G38_Perf7 EHPR98-G38_Perf8 EHPR98-G38_Perf9
EHPR98-G38_Dim
Cavity:
Installation type:
  • Flange mounted
Orientation restriction:
  • None
Mounting screw torque:
  • 3 to 4 N-m (2.2 to 3 ft-lb)
Note:
  • For retro-fitting into older drop-in cavities and other mounting options, see technical reference (link below).
Mounting plate:
  • HF p/n: 4595096
Mounting screw:
  • M5 - 0,8 x 12mm long, HF p/n: 4002609 (sold separately)
Valve body:
  • HF p/n 71612x0 (sold separately)
Note:
  • For retro-fitting into older drop-in cavities and other mounting options, see technical reference (link below).
Seal kit:
  • SK-G028-X X = seal option
EHPR98-G38_Order
POSITION
CODE
DESCRIPTION
EHPR98-G38DG-H-J-KL-U
D
Max Regulated Pressure
D
A
21 bar (305 psi)
D
B
25 bar (363 psi)
D
C
30 bar (435 psi)
G
Screen
G
BLANK
NONE
G
S
100 Mesh Screen
H
Line Body
H
0
No Body
J
Seal
J
G
HBNR (Hydrogenated Nitrile Butadiene Rubber)
J
V
Fluorocarbon
J
P
Polyurethane
K
Coil Voltage
K
10
10 VDC
K
12
12 VDC
K
14
14 VDC
K
20
20 VDC
K
24
24 VDC
K
28
28 VDC
L
Coil Termination
L
EJ
E-Coil, AMP Jr.
L
ER
E-Coil, Deutsch
L
EY2A
E-Coil, Metri-Pack 150.2
U
Mounting Plate
U
BLANK
None
U
G
Standard Single Valve Plate
U
T
Retro-Fit Plate