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
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 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

Cartridge 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
VC20-S3
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