Pressure Sustaining Valve -- Direct Acting Diaphragm Ductile Iron

Direct-acting diaphragm pressure sustaining valves that maintain a minimum upstream pressure by modulating flow to prevent pressure collapse in pump suction lines, tank inlet headers, and zone isolation points. A reinforced elastomer diaphragm senses upstream pressure and throttles the main valve plug to maintain the setpoint without electricity or compressed air. Ductile iron GGG50 body with SS316 trim for water, wastewater, and light chemical service.