Series WCV, WCVS Brass Swing Check Valves are used in commercial and industrial applications to prevent reverse flow. They feature a brass body, brass bonnet, PTFE gasket, and brass pin, screw, and seat. Model WCV is available in sizes 1/2 to 4 in. (15 to 100mm) with NPT female threaded end connections. Model WCVS is available in sizes 1/2 to 2 in. (15 to 50mm) with solder end connections. Series WCV, WCVS has metal-to-metal seating and provides low pressure drop and automatic closure when fluid flow is stopped. Maximum Pressure: 200psi (13.8 bar) WOG (non-shock), 125psi (8.6 bar) WSP.