E-CVCV Vented pilot-to-open check valve
SYMBOL
OPERATION
This valve is a pilot to open check valve. It has a sealed pilot, a steel seat, and is vented. It allows free flow from the valve (port 2) to the load (port 1) and blocks flow in the opposite direction. Pressure at the pilot (port 3) will open the valve from port 1 to port 2. Pilot pressure needed to open the valve is directly proportional to the load pressure at port 1. The valve is insensitive to pressure at port 2 because the spring chamber is referenced to the vent (port 4).
FEATURES
* Pilot pressure as low as 75 psi (5 bar) higher than the pressure at the vent can prevent the valve from closing.
* Will accept pressure at port 4 (vent) but can not exceed 5000 psi (350 bar).
* Pilot-to-open check cartridges are locking valves, not motion control valves. For motion control applications, use counterbalance valves.
SPECIFICATIONS:
Operating Pressure: 350 bar (5000 psi)
Flow: 15 gpm (60 L/min)
Pilot Ratio: 3:1
Internal Leakage: 1 drops/min max. at operating pressure
Temperature: - 30°C to 120 °C (- 22°F to 250 °F)
Fluids: Mineral-based fluids with viscosities of 7.4 to 420 cSt.
Cavity: T-21A
PERFORMANCE:
ORDER CODE:
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We guarantee quality for 3 years for non-standard customized valves: No leakage, No Noise, No Vibration.
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