Valves - Directional Controls - Logic Element - Pilot to Close - Double Blocking

EP20-S38

DIRECTIONAL ELEMENT, VENTED

Overview

Description

The EP20-S38 is a screw-in cartridge style hydraulic directional element. It is a spring biased bi-directional blocking poppet type valve.

Operation

It will block port 1 to 2 or 2 to 1 until pressure at port 1 or 2 exceeds the cumulative pressure at port 3 and the bias spring. With no pressure at port 3, flow will be allowed from port 1 to 2 or 2 to 1 once the bias spring force is overcome state. The ratio of areas between ports 1 and 2 is 1:1 and the ratio of areas between ports 1 or 2 and 3 is 1:2.

Features

  • Multiple function/application potential.
  • Low pressure drop.
  • Industry common cavity.
Pressure Ratings
Pressure rating:
  • 241 bar (3500 psi)
Flow Ratings
Maximum internal leakage:
  • 0.6 ml/min (12 drops/min) At 241 bar (3500 psi)
Temperature Ratings
Operating fluid temperature:
  • -40 to 120 °C (-40 to 248 °F)
Materials:
  • steel with hardened work surfaces; zinc plated exposed surfaces
Unit weight:
  • 0.82 kg (1.8 lb)
EP20-S38_Perf_Chrt(2022-02-24)
EP20-S38_Dim_Dwg(2022-02-24)
Cavity:
Seal kit:
  • SK20-S3N-MM Buna N
  • SK20-S3V-M Viton
  • SK20-S3P-MM Polyurethane
EP20-S38_Order(2022-02-24)
POSITION
CODE
DESCRIPTION
EP20-S38-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
40
40 psi Bias Spring
R
80
80 psi Bias Spring
R
160
160 psi Bias Spring