evo 2600
Radar Level Gauge
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Pilot Operated Relief Valves

Pilot operated pressure relief valves are used on liquid storage tanks and other vessels to prevent structural damage due to excess internal pressure or vacuum. Pilot Operated Relief Valves automatically controls the actuator pressure to either open or close the main valve depending on the pressure setting of the pilot vs the actual system pressures.

94640 Pilot Operated Relief Valve (Pressure Diaphragm Pilot)

  • Allows the pressure to be set between 3″ of water column pressure and 15 psig using sensitive springs for discrete ranges.

94645 Pilot Operated Relief Valve (Vacuum Diaphragm Pilot)

  • Allows the vacuum to be set between -3″ of water column pressure and -5 psig using sensitive springs for discrete ranges.