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

EHPR98-T38B

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 and 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.
  • 1000-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
57 bar (820 psi) Port 1
34 bar (500 psi) Port 3
Burst pressure
379 bar (5500 psi) Port 1 and 2 pressurized
Control pressure at maximum control current
56.6 bar (820 psi)
Flow Ratings
Flow rating
18.9 lpm (5.0 gpm)
Maximum internal leakage
393 ml/min (24 in³/min) Energized, at 241 bar (3500 psi)
100 ml/min (6 in³/min) De-energized, at 241 bar (3500 psi)
Hysteresis per cent
4 % Of maximum control pressure ( PWM) 100 Hz
Other Ratings
Cycle life
One million cycles
Environmental rating
Ip69k
Temperature Ratings
Maximum operating fluid temperature
-40 to 149 °C (-40 to 300 °F)
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

Cartridge weight
0.32 kg (0.70 lb)
Internal wetted surface area
169 cm² (26.22 in²) EHPR98-T38B
199 cm² (30.82 in²) EHPR98-T38BM

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-T38B_Perf_Chrt1 EHPR98-T38B_Perf_Chrt3

Dimensions

EHPR98-T38B_Dim_Dwg

Materials

Materials

Cartridge including Coil: Weight: 0.32 kg (0.70 lb); 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

Accessories

Order code

POSITION
CODE
DESCRIPTION
EHPR98-T38BEG-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
L
ER/Z
E-Coil, Deutsch with Zener Diode
EHPR98-T38B_Order