1-1/2 in. (38.1 mm) In-Line Check Valve NPT provides a watertight defense against pollution caused by backflow from water-based systems, including sprinkler and standpipe systems. Can be installed on a supply line or fire department connection (FDC) in accordance with NFPA code and local fire code.
With a working pressure of 200 PSI this 1-1/2 in. (38.1 mm) In-Line Check Valve guarantees the one-way flow of water with a corrosion-resistant stainless-steel clapper and rubber o-ring seat. Opens only when water flows exceed the manufacturer minimum pressure of 2 PSI.
A lead-free 1-1/2 in. (38.1 mm) In-Line Check Valve is available by special order.