EPFR50-S35 Pressure Compensator with Internal (EPFR50-S35)

A screw-in, cartridge-style, bypass-type, pressure-compensating element, with inte-gral flow regulator for load sense signal drain. The internal pressure-compensated flow regulator restricts the load signal bleed flow in order to minimize system losses even at high operating pressures. The main compensator element holds the valves primary flow constant regardless of load pressure changes.

Product Operation

The EPFR50-S35 is a spring-biased spool-type valve with an internal pressure-com-pensated flow regulator between ➁ and ➂. When used as a pump unloading com-pensator, this valve will bypass flow to tank at port ➁ when system pressure reaches the load pressure plus the bias spring value. When the system load is neutralized, the load signal is bled through the flow regulator bringing the valve to stand-by condition.

Product Features

• Multiple function in a single cavity.
 Low bleed flow throughout the operating pressure range.
 High system effi ciency.
 Industry common cavity

Product Ratings

Operating Pressure: Cartridge only: 345 bar (5000 psi); Aluminum housing: 207 bar (3000 psi); Ductile iron housing: 345 bar (5000 psi).
Flow: See Performance Chart
Maximum Flow Loss between 
and 
0.95 lpm (0.25 gpm) at 345 bar (5000 psi)
Bias Spring Pressure Options: 5.5 bar (80 psi);7.6 bar (110 psi)11.0 bar (160 psi) Tall Cap Required15.9 bar (230 psi) Tall Cap Required
Temperature: -40 to 120°C with standard Buna seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC10-S3; See page 9.110.1
Cavity Tool: CT10-S3xx; See page 8.600.1
Seal Kit: SK10-S3x-MM; See page 8.650.1

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