H71 Check Valve: Good Quality but LOW price Size: 1/2"- 8" Also do OEM ... significantly reduce the hammer. Products to its small size, light weight, nimble, sealing a reliable,easy installation, particularly ... , oil, air, gas and otherpipeline.The price is very low,and the quality is excellent.We believe ourproducts ... we can providemalleable pipe fittings OEM service. Low Price Vertical Lift Check Valve