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EPFR52-S35

PRESSURE COMPENSATING ELEMENT WITH INTERNAL ORIFICE

Overview

Description

EPFR52-S35 is a screw-in, cartridge style, bypass type pressure compensating element intended for use with remote fixed or variable orifice to provide a constant flow regardless of load pressure changes.

Operation

The EPFR52-S35 is spring biased spool type valve provided with a small internal orifice between ports 2 and 3 so that the valve would bypass all flow to tank at bias spring pressure value plus pressure rise at no load flow demand. The orifice is pressure compensated to restrict flow loss through it at load flow demand.

Features

  • Multiple function in a single cavity.
  • Low bleed flow throughout the operating pressure range.
  • High system efficiency.
  • Industry-common cavity.
Pressure Ratings
Pressure rating:
  • 345 bar (5000 psi)
Flow Ratings
Flow rating:
  • 151 lpm (40 gpm)
Maximum flow loss:
  • 0.76 lpm (0.20 gpm) Between ports 3 and 2 at 345 bar (5000 psi)
Temperature Ratings
Operating fluid temperature:
  • -40 to 100 °C (-40 to 212 °F) With buna N seals
  • -26 to 204 °C (-15 to 400 °F) With fluorocarbon seals
  • -54 to 107 °C (-65 to 225 °F) With polyurethane seals
Storage temperature:
  • -40 to 70 °C (-40 to 160 °F)
Ambient temperature:
  • -40 to 90 °C (-40 to 194 °F)
Fluids:
  • Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 20/18/14 per ISO 4406
Unit weight:
  • 0.28 kg (0.61 lb) Standard
  • 0.44 kg (0.97 lb) Tall adaptor
Internal wetted surface area:
  • 208 cm² (32.2 in²) Standard
  • 267 cm² (41.4 in²) Tall adaptor
EPFR52-S35_Perf1 EPFR52-S35_Perf2
EPFR52-S35_Dim
Cavity:
Cartridge installation torque:
  • 44.7 to 50.2 N-m (33 to 37 ft-lb)
Maximum allowable torque:
  • 50.2 N-m (37 ft-lb) Aluminum
  • 94.9 N-m (70 ft-lb) Ductile iron
Orientation restriction:
  • None
Seal kit:
  • SK12-S3X-MM X = seal option
EPFR52-S35_Order
POSITION
CODE
DESCRIPTION
EPFR52-S35C-H-J-R
C
Tall Cap
C
BLANK
Standard Cap
C
T
Tall Cap
H
Line Body
H
0
No Body
H
12T
Aluminum SAE 12
H
12TD
Ductile Iron SAE 12
H
6BD
Ductile Iron BSPP 3/4" (6)
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
J
U
PPDI Urethane
R
Spring
R
80
80 psi Bias Spring
R
100
100 psi Bias Spring
R
160
160 psi Bias Spring
R
240
240 psi Bias Spring