Directional Valves

EV20-S34 — Vented Spool-Type Logic Element
   Selection guide - similar valves.
   PDF file of this page.
   STP File for EV20-S34
   Request a quote.

EV20-S34 Valve

SYMBOL:
EV20-S34 Valve symbol

DESCRIPTION
A spool-type, screw-in, cartridge-style, hydraulic directional element, with multifunction
potential when used with other directional, pressure, or flow control devices.

OPERATION
The EV20-S34 is a spring-biased blocking valve which will shift to allow full flow from 1 to 2
only when port 3 is vented to create a pressure drop across the internal orifice which exceeds
the pressure of the bias spring force. EV20-S34 is a vent-to-open directional valve.

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

RATINGS
Max. Operating Pressure: 345 bar (5000 psi) Polyurethane seals are recommended for 345 bar (5000 psi)
   operation. Aluminum bodies for this product are rated for 207 bar (3000 psi)
Flow: Up to 379 lpm (100 gpm)
Internal Leakage: 197 cc/minute (12 cu. in./minute) max. at 345 bar (5000 psi)
Operating Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
   -26° to 204°C (-15° to 400°F) with Fluorocarbon seals;
   -54° to 104°C (-65° to 225°F) with Polyurethane seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
   7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC20-S3; See page 9.120.1_3w
Cavity Tool: CT20-S3xx; See page 8.600.1
Seal Kit: SK20-S3x-MM; See page 8.650.1

PERFORMANCE:

EV20-S34 Performance

  DIMENSIONS:
EV20-S34 Valve Dimensions

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.
See page 8.020.1_3w.
  ORDERING CHART:

EV20-S34 Ordering Chart

Selection guide - similar valves.
PDF file of this page. STP File for EV20-S34 Request a quote.