G500-QR model quick pressure relief valve is the safety control valve designed to protect the system by releasing pressure surges, which are caused by sudden changes in water speed due to pumps put into/out of service, in water network elevation lines to the atmosphere quickly When network pressure exceeds set point, the valve opens by itself quickly and protects the system by releasing over pressure When the line pressure decreases to normal level, it is tightly closed slowly and automatically without causing a surge Applications Use G500-QR when wishing to avoid unwanted high pressur Standards G500-QR : 3 Way plastic pilot, polytethylene plastic tubing system and nylon fittings G500-QRM : 3 Way plastic pilot, polytethylene plastic tubing system and nylon fittings and 3 Way selector Size 1 1⁄2, 2″, 2 1⁄2”, 3″, 4″ Function 2 Way Normally Closed Valve Operation Hydraulic / Electric ( Requires G75-A 3W NO) Body Material Plastic Seal NR Pressure Range 0.5 – 5 bar or 1 – 10 bar Media Air, water
