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

EHPR98-T38

PROPORTIONAL PRESSURE REDUCING / RELIEVING CARTRIDGE VALVE

Overview

Description

This is a direct-acting, spool-type, proportional, pressure reducing/ relieving valve. It is a 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 an is not serviceable. The regulated pressure is proportional to the input electrical current in the pressure ranges shown

Manual Override Operation

Rotate manual override screw clockwise until desired regulated pressure is achieved

Features

  • 10, 12, 20 or 24 VDC coils.
  • 960 hour salt spray protection.
  • Economical drop-in style.
  • Several push-on termination options.
  • Integral waterproof coil standard.
  • Optional 142 micron screen at port 2.

Ratings

Pressure Ratings
Pressure rating:
  • 241 bar (3500 psi) Port 2
  • 34.5 bar (500 psi) Port 3
  • 17.2 bar (250 psi) Port 3 - for manual override option
Burst pressure:
  • 345 bar (5000 psi) Ports 1 and 2 pressurized
Control pressure at maximum control current:
  • 30 bar (500 psi)
Flow Ratings
Flow rating:
  • 18.9 lpm (5.0 gpm)
Maximum internal leakage:
  • 50 ml/min (3 in³/min) De-energized, at 34.5 bar (500 psi)
  • 100 ml/min (6 in³/min) Energized at imax, 34.5 bar (500 psi)
Hysteresis per cent:
  • 5 % Of maximum control pressure ( PWM) 100 Hz
Other Ratings
Cycle life:
  • One million cycles
Environmental rating:
  • Ip69k
Temperature Ratings
Operating fluid temperature:
  • -40 to 149 °C (-40 to 300 °F) With HNBR seals
  • -26 to 204 °C (-15 to 400 °F) With fluorocarbon seals
Storage temperature:
  • -40 to 70 °C (-40 to 160 °F)
Ambient temperature:
  • -40 to 80 °C (-40 to 176 °F)

Operating Parameters

Fluids:
  • Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 20/18/14 per ISO 4406

Properties

Unit weight:
  • 0.32 kg (0.70 lb)
Internal wetted surface area:
  • 173 cm² (26.8 in²) EHPR98-T38
  • 203 cm² (31.4 in²) EHPR98-T38M

Electrical Parameters

Maximum control current:
  • 1.38 A (coil) 10 V
  • 1.30 A (coil) 12 V
  • 0.69 A (coil) 20 V
  • 0.65 A (coil) 24 V
Valve inductance:
  • 80 mH

Performance

EHPR98-T38_Perf_Chrt1 EHPR98-T38_Perf_Chrt2 EHPR98-T38_Perf_Chrt3

Dimensions

EHPR98-T38_Dim_Dwg

Materials

Materials

Cartridge including Coil: Steel with hardened work surfaces. Zinc-plated exposed surfaces; HNBR O-rings standard. Coil is encapsulated, class H high temperature magnet wire, with zinc-nickel plated shell.

Ported Test Body: Consult Factory.

Mounting Screws: Must be ordered separately; Part no. 4001015

Installation Specifications

Cavity:
Installation type:
  • Flange mounted
Orientation restriction:
  • None
Mounting screw torque:
  • 1.2 to 1.5 N-m (0.9 to 1.1 ft-lb)

Accessories

Mounting screw:
  • M4 x 12, hf p/n: 4001015 (sold separately)
Valve body:
  • Hf p/n 71570x0 (sold separately)
Seal kit:
  • SK-T011-X X = seal option

Order Code

POSITION
CODE
DESCRIPTION
EHPR98-T38EG-H-J-KL
E
Manual Override
E
BLANK
NONE
E
M
Minimum Regulated Pressure Override, 3/16" Internal Hex
G
Screen
G
BLANK
NONE
G
S
100 Mesh Screen
H
Line Body
H
0
No Body
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
K
Coil Voltage
K
10
10 VDC
K
12
12 VDC
K
20
20 VDC
K
24
24 VDC
L
Coil Termination
L
EJ
E-Coil, AMP Jr.
L
ER
E-Coil, Deutsch
EHPR98-T38_Order