PROPORTIONAL CONTROLS
Delta Power Company
4484 Boeing Drive - Rockford, IL 61109
WARNING: The specifications/application data shown in our catalogs and data sheets are intended only as a general guide for the product described
(herein). Any specific application should not be undertaken without independent study, evaluation, and testing for suitability.
Phone: (815) 397-6628 Fax: (815) 397-2526 E-mail: delta@delta-power.com
EE-PRD 2 Way, Normally Open, Proportional Relief Valve
DESCRIPTION
10 size, 7/8-14 thread, “Delta” series, solenoid operated, 2 way normally open, hydraulic relief valve.
OPERATION
The EE-PRD blocks flow from (2) to (1) until sufficient pressure is present at (2) to offset the electrically
induced solenoid force.
Can be infinitely adjusted across a prescribed range using a variable electric input. Pressure output is
proportional to DC current input. This valve is intended for use as a pressure limiting device in demanding
applications.
With no current applied to the solenoid, the valve will free flow from (2) to (1) at approximately 100 PSI.
Note: Backpressure on port (1) becomes additive to the pressure setting at a 1:1 ratio.
FEATURES
x Efficient wet-armature construction.
x Cartridges are voltage interchangeable.
x Industry common cavity.
x Unitized, molded coil design.
x Continuous duty rated solenoid.
x Optional coil voltages and terminations.
HYDRAULIC SYMBOL
Uses “P” Power coil.
Consult Factory for I coil performance curves.
For best performance valve must be purged of air.
Locate below reservoir or add check valve to return.
PERFORMANCE
Actual Test Data (Cartridge Only)
VALVE SPECIFICATIONS
Nominal Flow 0-12 GPM (0-45 LPM)
Operating Range 100-3000 PSI (3-207 bar)
Typical Hysteresis 5%
Viscosity Range 36 to 3000 SSU (3 to 647 cSt)
Filtration ISO 18/16/13
Media Operating Temperature
Range
-40q to 250q F (-40q to 120q C)
Weight .30 lbs. (.13 kg)
Operating Fluid Media
General Purpose Hydraulic
Fluid
Cartridge Torque Requirements 30 ft-lbs (40.6 Nm)
Coil Nut Torque Requirements 4-6 ft-lbs (5.4-8.1 Nm)
Cavity DELTA 2W
Cavity Form Tool (Finishing) 40500000
Seal Kit 21191202
COIL SPECIFICATION
Current Supply Characteristics
PWM (Pulse Width Modulation)
or Variable DC
Rated Current Range
00-1000mA (12Volt)
500mA (24 Volt)
PWM or Superimposed Dither
Frequency
200 Hz or Higher
Coil Resistance (12 VDC) Coil
Resistance (24 VDC)
7.5 Ohm +/- 5% @ 68F (20C)
30.5 Ohm +/- 5% @ 68F (20C)
Page 540
PROPORTIONAL CONTROLS
Delta Power Company
4484 Boeing Drive - Rockford, IL 61109
WARNING: The specifications/application data shown in our catalogs and data sheets are intended only as a general guide for the product described
(herein). Any specific application should not be undertaken without independent study, evaluation, and testing for suitability.
Phone: (815) 397-6628 Fax: (815) 397-2526 E-mail: delta@delta-power.com
DIMENSIONS
ORDERING INFORMATION
EE-PRD - - -
OPTIONS BODIES
Buna Standard 00 Blank Without Body
Viton Standard V0 N 3/8 NPT Ports
S#8 SAE Ports
VOLTAGE
12 12 VDC
24 24 VDC
“P” COIL TERMINATION
DL Double Lead SS Single Spade
DT Deutsch on Leads DT04-2P DS Double Spade
ML Metri-Pack on Leads HC DIN 43650 (Hirschman)
PL Packard on Leads DI Deutsch – Integral DT04-2P
WL Weatherpack on Leads
Approximate Coil Weight: .42 lbs. (.19 kg.)
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