Valves - Directional Controls - Logic Element - Vent to open

EV20-S34

DIRECTIONAL ELEMENT, VENTED

Overview

Description

The EV20-S34 is a screw-in, cartridge style, hydraulic directional element. It is a spring biased blocking valve which will shift to allow full flow from port 1 to 2 only when port 3 is vented to create a pressure drop across the internal orifice which exceeds the bias spring pressure value

note: orifice disc should not be used with this product

Features

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

Ratings

Pressure Ratings
Pressure rating
345 bar (5000 psi) Polyurethane seals are recommended for 5000 psi [345 bar]
Flow Ratings
Maximum internal leakage
197 ml/min (12 in³/min) At 5000 psi 345 bar
Temperature Ratings
Maximum operating fluid temperature
-40 to 204 °C (-40 to 400 °F)

Properties

Cartridge weight
0.82 kg (1.8 lb)

Performance

EV20-S34_Perf_Chrt

Dimensions

EV20-S34_Dim_Dwg

Materials

Materials

Cartridge: Weight: 0.82 kg. (1.8 lbs.); 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 lbs.) Anodized high-strength 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)

Accessories

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

Order code

POSITION
CODE
DESCRIPTION
EV20-S34-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
50
50 psi Bias Spring
R
80
80 psi Bias Spring
R
160
160 psi Bias Spring
EV20-S34_Order