H71 Check Valve: Good Quality but LOW price Size: 1/2"- 8" ... /Y/W2 Usage and features: connection with wafer H71 check valve, compact disc along the center position for take-off ... its small size, light weight, nimble, sealing a reliable,easy installation, particularly suitable for space-constrained adopt, for water, steam, ... providemalleable pipe fittings OEM service. Low Price Vertical Lift Check Valve