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

EHPR98-G37

PRESSURE REDUCING / RELIEVING DROP-IN VALVE

Overview

Description

This is a direct-acting, spool-type, proportional, pressure reducingrelieving valve. It is a drop-in, flange mounted cartridge type valve. the coil is an integral part of the valve and is not serviceable. The regulated pressure is inversely proportional to the input electrical current.

Operation

When no current is applied to the coil the valve allows free flow from 2 to 1 with the spring chamber constantly drained at port 3. Upon attainment of a predetermined pressure at port 1, the spool shifts to restrict inlet flow from port 2, thereby regulating the pressure at port 1. In this mode the valve will also relieve port 1 to port 3. Increasing current to the coil will decrease the control pressure at port 1 proportionallyt.

Features

  • Economical drop-in style
  • Mounting plate option
  • Several regulated pressure ranges
  • Quick response time
  • Screen option
  • Top-mounted connector
  • Low leakage
Pressure Ratings
Pressure rating:
  • 44.8 bar (650 psi) Port 1 and 2
  • 34.5 bar (500 psi) Port 3
Proof pressure:
  • 207 bar (3000 psi) Ports 1, 2
  • 54 bar (780 psi) Port 3
Burst pressure:
  • 250 bar (3625 psi) All ports pressurized
Control pressure at zero control current:
  • 31.3 ±4 bar (454 ±59 psi)
Flow Ratings
Flow rating:
  • 11.4 lpm (3.0 gpm)
Maximum internal leakage:
  • 230 ml/min (14.0 in³/min) De-energized
  • 150 ml/min (9.2 in³/min) 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 100 °C (-40 to 212 °F)
Fluids:
  • Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Unit weight:
  • 0.27 kg (0.59 lb)
Internal wetted surface area:
  • 156 cm² (24.2 in²)
Maximum control current:
  • 1.34 A S12 coil
  • 0.67 A S24 coil
Hysteresis:
  • Less than 5 % At 100 Hz PWM, after 360 mA (S12 coil),
  • Less than 5 % At 100 Hz PWM, after 180 mA (S24 coil),
EHPR98-G37_Perf1(2022-02-24) EHPR98-G37_Perf2(2022-02-24) EHPR98-G37_Perf3(2022-02-24)
EHPR98-G37_Dim(2022-02-24)
Cavity:
Installation type:
  • Flange mounted
Orientation restriction:
  • None
Mounting screw torque:
  • 3 to 4 N-m (2.2 to 3.0 ft-lb)
Mounting plate:
  • HF P/N 4595096 Sold separately
Mounting screw:
  • M5 x 0.8 x 12 mm long, HF P/N: 4002609 (sold separately)
Seal kit:
  • SK-G028-X X=seal option
Ported test body:
  • HF P/N: 71612X0 Sold separately
EHPR98-G37_Order(2022-02-24)
POSITION
CODE
DESCRIPTION
EHPR98-G37DFG-H-J-KL-U
D
Max Regulated Pressure
D
C
31.3 bar (454 psi)
F
Plunger Option
F
BLANK
Standard Version
F
F
Fast Responding
G
Screen
G
BLANK
NONE
G
S
100 Mesh Screen
H
Line Body
H
0
No Body
J
Seal
J
G
HNBR (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