Pilot-Operated Relief Valve and the Weight Loaded Vacuum Relief Vent

94640 Pilot Operated Relief Valve/94110 Vacuum Vent

Bubble Tight to Set Pressure Pilot Valve Technology allowing for a significant reduction in emissions.
Full Flow @ 10% Overpressure.
Greater Flow Characteristics allowing for reduced sizing compared to conventional weight and spring loaded pressure relief valves.
Setting options of inches WC to 15 PSIG allowing for one valve for the entire low pressure range.
Minimal effect of Backpressure and Negative Pressure in closed vent systems compared to conventional pressure relief valves.
Modulating or Snap action operation to meet specific relief applications.
Test in Place capability with Field Test Kit.
Modular Construction allows for a Pressure/Vacuum Configuration; Pressure Only/Vacuum only.
Adjustable Vacuum Settings.
Variety of soft goods available for severe service applications.

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