In-Line Check Valves

1 in. (25.4 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...

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...

1-1/4 in. (31.75 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...

2 in. (50.8 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...