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USASI/ISO:
SYMBOLS
2.971.1PERFORMANCE
CURRENT amps
P R E S S U R E b a r /p s i
Reducing Pressure vs. Current
Inlet: 241 bar/3500 psi; 100 Hz PWM
Reducing Pressure 2 to 1
6.9/100
13.8/20020.7/30027.6/40034.5/5000.20.40.6 1.00.8 1.4
1.2
FLOW lpm/gpm
P R E S S U R E b a r /p s i
Pressure Drop vs. Flow
Cartridge Only
1 to 3 —— ;
2 to 1 - - - -1.7/25
3.4/505.2/756.9/1008.6/1250.80.2
1.50.4
2.30.6
3.00.8
3.8
1.0
DESCRIPTION
ing valve, which can be infinitely adjusted across a prescribed range using a variable electric input. Pressure output is proportional to DC current input. The Ecoil is an integral part of the valve asmbly, and cannot be replaced or field-rviced.
OPERATION
The EHPR98-T33 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 increa the control (reduced) pressure proportionally. If pressure at 1 exceeds the tting induced by the coil, pressure from 1 is relieved to 3.
Note: Back pressure on port 3 becomes additive to the pressure tting at a 1:1 ratio.
FEATURES
• Economical drop-in style.
• Integral waterproof coil standard.• 1000-hour salt spray protection. • 10, 12, 20 or 24 VDC coils.
• Several push-on termination options.
RATINGS
Maximum Inlet Pressure: 241 bar (3500 psi)
Common Port Burst Pressure: One cycle at 158 bar (2300 psi) on all ports simultaneously pressurized
Tank Port (3) Pressure: 34.5 bar (500 psi) maximum for 100,000 cycles
Maximum Control Current: 1.38 amps for 10 VDC coil; 1.30 amps for 12 VDC coil;0.69 amps for 20 VDC coil; 0.65 amps for 24 VDC coil
Resistance: 4.2 ohm (10V), 5.1 ohm (12V), 17.0 ohm (20V), 19.3 ohm (24V)Inductance: 80 mH (12V)
Hysteresis: Less than 3% with 100 Hz PWM Flow Rating: 3.8 lpm (1.0 gpm)
Step Respon: T ON <30 ms; T OFF <12 ms
Temperature: -40 to 120°C (-40 to 250°F), with standard Buna N als Ambient Air Temperature: -40 to 80°C (-40 to 176°F)Environmental Rating: IP69K Filtration: See page 9.010.1
Fluids: Mineral-bad or synthetics with lubricating properties at viscosities of
7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1Installation: Flange Mount
Mounting Screws: M4 x 0.7 x 12 Long; Part No. 4001015 (not provided with valve)Cavity: VC-T009; See page 9.111.1; Cavity Tool: CT-T009R0-x-G; See page 8.600.1
Seal Kit: SKEHPR98-T3X; See page 8.650.1
ELECTRO-PROPORTIONAL VALVES—PRESSURE CONTROLS
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Return to Table of Contents PERFORMANCE
2.971.2
(continued)
DIMENSIONS
MATERIALS
Cartridge including Coil: Weight: 0.20 kg. (0.44 lbs.) Steel with hardened work surfaces. Zinc-Nickel plated expod surfaces. HNBR O-rings standard. Coil is encapsulated, class H high-temperature magnetwire, with zinc-nickel plated shell.
Ported Test Body: Consult Factory Mounting Screws: Must be ordered parately: Part No. 4001015
EHPR98-T33 __ __ - __ __ - __ - __ __ __ __ __
TO ORDER
Voltage
10 10 VDC 12 12 VDC 20 20 VDC 24 24 VDC
Termination
ER Deutsch DT04-2P EJ Amp Junior Timer
Diode
(Blank) None Z Zener Diode, Bidirectional Other voltages
are available. Consult factory.
Seals Hydrogenated Nitrile (HNBR) N Fluorocarbon V Polyurethane P H YDRA F ORCE
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Porting
C artridge Only 0 Screen Option
None (Blank) 142μ on Inlet Port 2 S
Recommended Electronic Controllers:
See page 2.001.1 or our Electronics catalog.
Option
None (Blank) Manual Override M
