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.

Ratings

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
Maximum operating fluid temperature
-40 to 120 °C (-40 to 248 °F)

Properties

Materials
steel with hardened work surfaces; zinc plated exposed surfaces
Cartridge weight
0.82 kg (1.8 lb)

Performance

EP20-S38_Perf_Chrt

Dimensions

EP20-S38_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

Accessories

Seal kit
SK20-S3N-MM Buna N
SK20-S3V-M Viton
SK20-S3P-MM Polyurethane

Order code

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
EP20-S38_Order