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A poppet-type, screw-in, cartridge-style, spring-biased, bi-directional blocking-type hydraulic valve with two built-in checks. When used in conjunction with a small pilot solenoid valve, the EP20-S39 is ideal for either high-flow double-blocking circuits or selector circuits. The integral two-check system prevents leakage, maintaining the pilot signal regardless of the transition or the work-port pressure changes.
The EP20-S39 will allow flow from ➀ to ➁ or ➁ to ➀ only when ➂ is vented to create a pressure drop across the internal orifice which exceeds the pressure value of the
bias spring. When the element is in the neutral (closed) state, the ratio of areas ➀ and ➁ is 1:1, and the ratio of areas ➀ or ➁ to ➂ is 1:2.
• Multiple function/application potential.
• Low pressure drop.
• Industry common cavity.
Maximum Operating Pressure: Cartridge Only: Ports ➀ & ➁, 241 bar (3500 psi)
Flow: See Performance Chart
Internal Leakage: 0.6 ml/minute (12 drops/minute) max. at 241 bar (3500 psi)
Internal Orifi ce: 0.79 mm (0.031 in.)
Temperature: -40 to 120°C with standard Buna 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
Cavity Tool: CT20-S3xx; See page 8.600.1
Seal Kit: SK20-S3x-MM; See page 8.650.1
