Directional Valves

EP20-S35 — Vented Spool-Type Logic Element
   Selection guide - similar valves.
   PDF file of this page.
   STP File for EP20-S35
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EP20-S35 Valve

EP20-S35 Valve symbol


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

The EP20-S35 is a spring-biased blocking valve which will shift to allow full flow from 1 to 2
only when pressure at 1 exceeds the cumulative pressure of 3, plus the bias spring pressure value.
EP20-S35 is a pilot-to-close directional valve. With no pressure at 3, flow will be allowed from
1 to 2 once the bias spring force is overcome with pressure at 1.

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

Max. Operating Pressure: 345 bar (5000 psi). Polyurethane seals are recommended for
   operation over 240 bar (3500 psi).
Flow: Up to 379 lpm (100 gpm)
Internal Leakage: 164 cc/minute (10 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




EP20-S35 Performance



EP20-S35 Valve Dimensions



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.
See page 8.020.1_3w..



EP20-S35 Ordering Chart