Pressure Relief Sustaining Valve

Pressure Relief/Sustaining Valve is a hydraulically operated, diaphragm actuated control valve that can fulfill either of two separate functions. When installed in-line, it sustains minimum pre-set, upstream (back) pressure regardless of fluctuating flow or varying downstream pressure. When installed as a circulation valve, it relieves excessive line pressure when above maximum pre-set. APPLICATIONS: Pump Overload and Cavitation Protection Discharge pressure, preventing pump overload and cavitation damage caused by excessive demand limit pump flow by sustaining pump differential pressure maintain the main valve upstream water supply pressure DRIVE MODE: Hydraulic power