EHPR98-
G33
PROPORTIONAL PRESSURE REDUCING / RELIEVING
CARTRIDGE VALVE
Overview
Symbol
Description
The ehpr98-g33xx 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
Features
Economical drop-in style.
❍
Mounting plate option.
❍
Compact size.
❍
Retrofit option for EHPR98-T33.
❍
Quick response time.
❍
Inlet screen and pressure options.
❍
Top-mounted connector.
❍
Low leakage.
❍
Ratings
Pressure Ratings
Pressure rating
103 bar (1500 psi) - Note: Port 2
45 bar (650 psi) - Note: Ports 1, 3
Proof pressure
54 bar (780 psi) - Note: Port 3
345 bar (5000 psi) - Note: Ports 1, 2
Burst pressure
258 bar (3750 psi) - Note: All ports pressurized
Control pressure at maximum
control current
30 bar (435 psi)
Flow Ratings
Flow rating
3.8 lpm (1.0 gpm)
Maximum internal leakage
60 ml/min (3.6 in³/min) - Note: At 34.5 bar (500 psi)
Hysteresis per cent
4 %
Other Ratings
hydraforce.com
10/4/2020
EHPR98-G33
EHPR98-
G33
PROPORTIONAL PRESSURE REDUCING / RELIEVING
CARTRIDGE VALVE
Cycle life
10 million cycles
Environmental rating
Ip69k
Corrosion protection
1000 hour salt spray per ASTM b117
Temperature Ratings
Maximum operating fluid
temperature
-40 to 149 °C (-40 to 300 °F) - Note: HNBR
-26 to 204 °C (-15 to 400 °F) - Note: Fluorocarbon
-54 to 107 °C (-65 to 225 °F) - Note: Polyurethane
Storage temperature
-40 to 70 °C (-40 to 158 °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
Properties
Cartridge weight
0.26 kg (0.57 lb)
Internal wetted surface area
90 cm²; (14 in²;)
Electrical Parameters
Maximum control current
1.130 A - Note: Coil 10 V
0.940 A - Note: Coil 12 V
0.780 A - Note: Coil 14 V
0.565 A - Note: Coil 20 V
0.470 A - Note: Coil 24 V
0.390 A - Note: Coil 28 V
Valve inductance
68 mH - Note: 10 V coil
104 mH - Note: 12 V coil
152 mH - Note: 14 V coil
284 mH - Note: 20 V coil
433 mH - Note: 24 V coil
645 mH - Note: 28 V coil
hydraforce.com
10/4/2020
EHPR98-G33
EHPR98-
G33
PROPORTIONAL PRESSURE REDUCING / RELIEVING
CARTRIDGE VALVE
Performance
hydraforce.com
10/4/2020
EHPR98-G33
EHPR98-
G33
PROPORTIONAL PRESSURE REDUCING / RELIEVING
CARTRIDGE VALVE
hydraforce.com
10/4/2020
EHPR98-G33
EHPR98-
G33
PROPORTIONAL PRESSURE REDUCING / RELIEVING
CARTRIDGE VALVE
Dimensions
hydraforce.com
10/4/2020
EHPR98-G33
EHPR98-
G33
PROPORTIONAL PRESSURE REDUCING / RELIEVING
CARTRIDGE VALVE
Materials
Materials
Cartridge Including Coil: Weight: 0.26 kg. (0.57 lbs.) Steel with hardened work surfaces. Zinc-nickel plated exposed
surfaces. HNBR seals standard. Coil is encapsulated, Class N high-temperature magnet wire, with zinc-nickel plated
shell.
Ported Test Body: Part No. 71611X0
Mounting Screws: Must be ordered separately; M5 x 0.8 x 12 mm Long, Part No. 4002609 (with standard VC-G027
cavity); M4 x 0.7 x 12 Long; Part No. 4001015 (with retrofit application VC-T009 cavity).
Installation Specifications
hydraforce.com
10/4/2020
EHPR98-G33
EHPR98-
G33
PROPORTIONAL PRESSURE REDUCING / RELIEVING
CARTRIDGE VALVE
Cavity
VC-G027
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
"g3_mounting_options" technical reference
Accessories
Mounting plate
Hf p/n 4595096
Mounting screw
M5 x 0,8 x 12 mm long, hf p/n: 4002609 (sold separately)
Valve body
Hf p/n 71611x0 (sold separately)
Seal kit
SK-G027-X - Note: X=seal option
Order code
POSITION CODE DESCRIPTION
EHPR98-G33G-H-J-KL
G Screen
G BLANK NONE
G S 100 Mesh Screen
H Line Body
H 0 No Body
J Seal
J G HBNR (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
hydraforce.com
10/4/2020
EHPR98-G33
EHPR98-
G33
PROPORTIONAL PRESSURE REDUCING / RELIEVING
CARTRIDGE VALVE
L Coil Termination
L EJ E-Coil, AMP Jr.
L EJ/Z E-Coil, AMP Jr. with Zener Diode
L ER E-Coil, Deutsch
L ER/Z E-Coil, Deutsch with Zener Diode
L EY2A E-Coil, Metri-Pack 150.2
L EY2A/Z E-Coil, Metri-Pack 150.2 with Zener Diode
hydraforce.com
10/4/2020
EHPR98-G33
