Symbol
Description
The EHPR98-G38HXX 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 'H' pressure option is to be used in applications with inlet pressures that
exceed 69 bar (1000 psi) at port 2. See standard and 'D' options for inlet pressures
below 69 bar (1000 psi).
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
Overview
Ratings
Pr e ssur e Ratings
Pressure rating
69 to 241 bar (1000 to 3500 psi) - Note : Port 2
45 bar (650 psi) - Note : Port 1
34.5 bar (500 psi) - Note : At port 3
Proof pressure
345 bar (5000 psi) - Note : Ports 1, 2 pressurized
54 bar (780 psi) - Note : Port 3
Burst pressure
380 bar (5500 psi) - Note : Ports 1, 2 pressurized
250 bar (3625 psi) - Note : Port 3
Control pressure at maximum
control current
21 bar (305 psi) - Note : EHPR98- G38HA
25 bar (363 psi) - Note : EHPR98- G38HB
30 bar (435 psi) - Note : EHPR98- G38HC
Flow Rating s
Flow rating
23 lpm (6 gpm)
Maximum internal leakage
200 ml/min (12.2 in³/min) - Note : At 241 bar (3500 psi) de-energized
Othe r Ratings
Cycle life
10 million cycles
Environmental rating
IP69 K
Corrosion protection
960 hour salt spray per ASTM B117
Te mpe r ature Ratings
Operating fluid temperature
-40 to 149 °C (-40 to 300 ° F) - Note : HNBR
-26 to 204 °C (-15 to 400 ° F) - Note : Fluorocarbon
Storage temperature
-40 to 70 °C (-40 to 158 ° F)
Ambient temperature
-40 to 120 °C (-40 to 248 ° F)
Operating Parameters
Fluids
Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range
7.4 to 420 cSt
EHPR98-G38H
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Properties
Unit weight
0.27 kg (0.60 lb)
Internal wetted surface area
148 cm² (23.0 in²)
Electrical Parameters
Maximum control current
1.050 A - Note : At 10 V
0.0880 A - Note : At 12 V
0.720 A - Note : At 14 V
0.525 A - Note : At 20 V
0.440 A - Note : At 24 V
0.360 A - Note : At 28 V
Coil resistance
4.83 ohm - Note : 10 V coil
7.28 ohm - Note : 12 V coil
10.05 ohm - Note : 14 V coil
18.35 ohm - Note : 20 V coil
29.54 ohm - Note : 24 V coil
40.36 ohm - Note : 28 V coil
Valve inductance
77 mH - Note : 10 V coil
118 mH - Note : 12 V coil
165 mH - Note : 14 V coil
301 mH - Note : 20 V coil
446 mH - Note : 24 V coil
680 mH - Note : 28 V coil
Hysteresis
4 % - Note : At 120 Hz PWM
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Performance
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Dimensions
Installation Specifications
Cavity
VC-G028 - Note : Standard configuration
Installation type
Flange mounted
Orientation restriction
None
Mounting screw torque
3 to 4 N-m (2.2 to 3.0 ft-lb)
Note
For retro-fitting into older drop-in cavities and other mounting options, see
"Mounting-options-for-G3-valves" technical reference
Accessories
Mounting plate
HF P/N 4595096 - Note : Use with standard VC-G028 cavity
HF P/N 4210226 - Note : Use with retrofit VC-T011 cavity
Mounting screw
M5 x 0,8 x 12 mm long, HF P/N: 4002609 (sold separately) - Note : Use with
standard VC-G028 cavity
M4 x 00.7 x 12 mm long, HF P/N: 4001015 (sold separately) - Note : Use with
retrofit VC-T011 cavity
Seal kit
SK- G028-X - Note : X=seal option
Ported test body
HF P/N: 71612X0
Order Code
EHPR98-G38H
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EHPR98-G38H
Model Options
EHPR98-G38HDG-H-J-KL-U
D Max Regulated Pressure
CODE DESCRIPTION
A
21 bar (305
psi)
B
25 bar (363
psi)
C
30 bar (435
psi)
G Screen
CODE DESCRIPTION
BLANK NONE
S
100 Mesh
Screen
H Line Body
CODE DESCRIPTION
0 No Body
J Seal
CODE DESCRIPTION
G
HNBR (Hydrogenated Nitrile Butadiene
Rubber)
V Fluorocarbon
P Polyurethane
K Coil Voltage
CODE DESCRIPTION
10 10 VDC
12 12 VDC
14 14 VDC
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20 20 VDC
24 24 VDC
28 28 VDC
CODE DESCRIPTION
L Coil Termination
CODE DESCRIPTION
EJ E-Coil, AMP Jr.
ER E-Coil, Deutsch
EY2A
E-Coil, Metri-Pack
150.2
U Mounting Plate
CODE DESCRIPTION
BLANK None
G
Standard Single Valve
Plate
T Retro-Fit Plate
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EHPR98-G38H
