Valves - Directional Controls - Logic Element - Pilot to Close

EP20-S35

DIRECTIONAL ELEMENT, PILOTED

Overview

Description

The EP20-S35 is a screw-in, cartridge style, pilot to close hydraulic directional element

Operation

The valve is a spring-biased blocking valve which will shift to allow full flow from port 1 to 2 only when the pressure at port 1 exceeds the cumulative pressure of port 3, plus the bias spring pressure value

Features

  • Multiple function/application potential.
  • Low pressure drop.
  • Industry common cavity.

Ratings

Pressure Ratings
Pressure rating:
  • 345 bar (5000 psi)
Flow Ratings
Flow rating:
  • See performance graph
Maximum internal leakage:
  • 197 ml/min (12 in³/min) 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 70 °C (-40 to 160 °F)
Other Ratings
Corrosion protection:
  • Gep20-s35 - 960 hour salt spray per ASTM b117

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

Unit weight:
  • 0.77 kg (1.7 lb)
Internal wetted surface area:
  • 412 cm² (63.9 in²)

Performance

EP20-S35_Perf_Chrt

Dimensions

EP20-S35_Dim_Dwg

Materials

Materials

Cartridge: Weight: 0.82 kg (1.8 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces. Buna N O-rings and polyester elastomer back-ups standard.

Ported Body: Weight: 1.65 kg (3.65 lb) Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi). Ductile iron bodies available; dimensions may differ.

Installation Specifications

Cavity:
Cartridge installation torque:
  • 88 to 102 N-m (65 to 75 ft-lb)
Orientation restriction:
  • None

Accessories

Seal kit:
  • SK20-S3X-MM X = seal option

Order Code

POSITION
CODE
DESCRIPTION
EP20-S35-H-J-R
H
Line Body
H
0
No Body
H
16T
Aluminum SAE 16
H
16TD
Ductile Iron SAE 16
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
J
U
PPDI Urethane
R
Spring
R
20
20 psi Bias Spring
R
80
80 psi Bias Spring
R
160
160 psi Bias Spring
EP20-S35_Order