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

EHPR98-T38C

PROPORTIONAL PRESSURE REDUCING / RELIEVING CARTRIDGE VALVE

Overview

Description

The EHPR98-T38CX 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

Operation

The EHPR98-T38C allows free flow from 1 to 3 when no current is applied to the coil. When the coil is energized, 2 is connected to 1. Increasing current applied to the coil will increase the control (reduced) pressure proportionally. If pressure at 1 exceeds the setting induced by the coil, pressure from 1 is relieved to 3

Features

  • Economical drop-in style.
  • 1000-hour salt spray protection.
  • Integral waterproof coil standard.
  • Optional 142 micron screen at port 2.

Ratings

Pressure Ratings
Pressure rating
50.0 bar (725 psi)
Burst pressure
345 bar (5000 psi) Ports 1 and 2 pressurized
Flow Ratings
Flow rating
30.3 lpm (8 gpm)
Maximum internal leakage
50 ml/min (3 in³/min) At de-energized 34.5 bar (500 psi)
100 ml/min (6 in³/min) At energized at imax 34.5 bar (500 psi)
Hysteresis per cent
4 % Of maximum control pressure
Other Ratings
Cycle life
5 million cycles
Environmental rating
Ip69k
Temperature Ratings
Maximum 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

Cartridge weight
0.32 kg (0.70 lb)
Internal wetted surface area
179 cm² (27.8 in²)

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
94 mH Coil 12 V
402 mH Coil 24 V

Performance

EHPR98-T38C_Perf_Chrt1 EHPR98-T38C_Perf_Chrt3

Dimensions

EHPR98-T38C_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 Body: Consult Factory.

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

Installation Specifications

Accessories

Order code

POSITION
CODE
DESCRIPTION
EHPR98-T38CEG-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-T38C_Order