WATTS® No Lead Swing Check Valve, Series: 411, 3 in Nominal, Flange, 175 psi CWP, 125 lb, 180 deg F, Full Port, 9-1/2 in Inlet to Outlet Length, 3/4 in Top to Inlet Center, Cast Iron Body, Ductile Iron Disc Trim, Buna-N O-Ring/ Compressed Fiber Gasket
Series 411 Swing Check Valves are UL Listed and FM approved in sizes 2-1/2 to 10 in. (65 to 250mm). Valves feature a full port, flanged cast iron body with a black epoxy coating on all external surfaces and a Buna-N resilient disc seat designed for use on fire mains and sprinkler systems. The valve operates automatically by opening on a hinge arm with flow and closing when flow stops or is reversed.