GEM-FLOW | G500-PS Pressure Sustaining Control Valve 1-1/2” - 4” Description G500-PS model pressure sustaining hydraulic control valve maintains valve upstream pressure value constant. Valve is opened when line pressure reaches the preset pressure level. It ensures that pump motor within pumping systems will start without load. It also prevents positive pressure waves caused by pump during start-up. The valve controls upstream pressure value continuously and keeps it at a constant value without being affected from changes in flow rate. When no flow exists, it closes tightly by itself. * For technical information, refer to G75-A and G75-A3P solenoid valves Use G500-PS for maintaining a constant upstream pressure or to avoid unwanted high pressure G500-PS: 3 Way plastic pressure sustaining pilot, polytethylene plastic tubing system and nylon fittings G500-PSM: 3 Way plastic pressure sustaining pilot, polytethylene plastic tubing system, nylon fittings and 3 Way selector Standard pressure adjustment from factory: 2.5 bar TYPE without Manual Selector with Manual Selector PRESSURE RANGE Example: G500-PSM-801G G500 pressure sustaining with manual selector, 2" BSPT, 24V AC, two wires, 1-10 bar G500 (1) For G75-A3P Latch (2) For Latch only * To order valves manufactured according to your specific requirements, please contact our technical sales department 3W selector valve In-line finger fi