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EPFR58-35

PRESSURE COMPENSATING ELEMENT WITH INTERNAL ORIFICE

Overview

Description

EPFR58-35 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

It 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.

Ratings

Pressure Ratings
Pressure rating
345 bar (5000 psi)
Flow Ratings
Flow rating
See performance graph
Maximum internal leakage
0.6 lpm (0.15 gpm) Between ports 3 and 2 at 345 bar (5000 psi)
Temperature Ratings
Maximum 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)

Operating Parameters

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

Properties

Cartridge weight
0.1 kg (0.22 lb)
Internal wetted surface area
104 cm² (16.1 in²)

Performance

EPFR58-35_Perf_Chrt

Dimensions

EPFR58-35_Dim_Dwg

Materials

Materials

Cartridge: Weight: 0.11 kg (0.25 lb); Steel with Zinc-plated exposed surfaces; Buna N O-rings and back-ups standard.

Ported Body : Weight: 0.64 kg (1.41 lb); Ductile iron (code 'D'); dimensions may differ from illustration above; rated to 345 bar (5000 psi);

Ported Body : Weight: 0.36 kg (0.80 lb); Anodized high-strength aluminum alloy, rated to 207 bar (3000 psi);

Installation Specifications

Cavity
VC08-3
Cartridge installation torque
25.8 to 28.5 N-m (19 to 21 ft-lb)
Orientation restriction
None

Accessories

Seal kit
SK08-3X-MM X = seal option

Order code

POSITION
CODE
DESCRIPTION
EPFR58-35-H-J-R
H
Line Body
H
0
No Body
H
4T
Aluminum SAE 4
H
6T
Aluminum SAE 6
H
6TD
Ductile Iron SAE 6
H
8TD
Ductile Iron SAE 8
H
3B
Aluminum BSPP 3/8" (3)
H
3BD
Ductile Iron BSPP 3/8" (3)
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
J
U
PPDI Urethane
R
Spring
R
10
10 psi Bias Spring
R
40
40 psi Bias Spring
R
80
80 psi Bias Spring
R
110
110 psi Bias Spring
R
150
150 psi Bias Spring
R
250
250 psi Bias Spring
EPFR58-35_Order