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EPFR16-S35

PRESSURE COMPENSATING ELEMENT WITH INTERNAL ORIFICE

Overview

Description

EPFR16-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

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.
  • Range of bias spring options; tall adaptor required for higher pressures. An extra tall adaptor is required for the 240 psi bias spring option.
  • High system efficiency.
  • Industry-common cavity.
Pressure Ratings
Pressure rating:
  • 241 bar (3500 psi)
Flow Ratings
Flow rating:
  • See performance graph
Maximum flow loss:
  • 0.6 lpm (0.15 gpm) Between ports 3 and 2 at 241 bar (3500 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:
  • 0.29 kg (0.64 lb) EPFR16-S35
  • 0.42 kg (0.92 lb) EPFR16-S35T
  • 0.72 kg (1.59 lb) EPFR16-S35T-X-X-240
  • 0.57 kg (1.26 lb) EPFR16-S35TM
  • 0.87 kg (1.59 lb) EPFR16-S35TM-X-X-240
  • 0.62 kg (1.36 lb) EPFR16-S35TMC
  • 0.91 kg (2.01 lb) EPFR16-S35TMC-X-X-240
Internal wetted surface area:
  • 223 cm² (34.5 in²) EPFR16-S35
  • 295 cm² (45.7 in²) EPFR16-S35T
  • 375 cm² (58.2 in²) EPFR-S35T-X-X-240
  • 296 cm² (45.9 in²) EPFR16-S35TM
  • 372 cm² (57.7 in²) EPFR-S35TM-X-X-240
  • 296 cm² (45.9 in²) EPFR16-S35TMC
  • 372 cm² (57.7 in²) EPFR-S35TMC-X-X-240
EPFR16-S35_Perf1 EPFR16-S35_Perf2 EPFR16-S35_Perf3
EPFR16-S35_Dim
Cavity:
Cartridge installation torque:
  • 62.4 to 73.2 N-m (46 to 54 ft-lb)
Maximum allowable torque:
  • 136 N-m (100 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK16-S3X-MM X = seal option
EPFR16-S35_Order
POSITION
CODE
DESCRIPTION
EPFR16-S35CF-H-J-R
C
Tall Cap
C
BLANK
Standard Cap
C
T
Tall Cap
F
Stroke Limiter
F
BLANK
Standard
F
M
Stroke Limiter
F
MC
Stroke Limiter with Cover Cap
H
Line Body
H
0
No Body
H
16T
Aluminum SAE 16
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
20
20 psi Bias Spring
R
40
40 psi Bias Spring
R
70
70 psi Bias Spring
R
90
90 psi Bias Spring
R
110
110 psi Bias Spring
R
160
160 psi Bias Spring
R
240
240 psi Bias Spring