4 in. (101.6 mm) Grooved Check Valve ensures that water from flowing from fire department connections, bypass connections, gravity pressure tanks, or pump discharge connections flows to your sprinklers-not to the street.
The steel clapper forms a watertight seal with the same EPDM synthetic rubber trusted in commercial leak-proofing applications. The heavy-duty ductile iron exterior, coated with a fusion bonded epoxy, and corrosion-resistant stainless steel interior ensure durability.
This 4 in. (101.6 mm) Grooved Check Valve is easy to install. Designed for working pressures of 300 PSI with a non-slamming, spring-loaded clapper that prevents backflow and water hammer. Listed for upright or horizontal installation and suitable for use in wet-pipe and dry-pipe fire sprinkler systems with grooved connecting pipe ends.
When installed with a trim kit, this 4 in. (101.6 mm) Grooved Check Valve can be installed as a shotgun riser check valve, and can provide a compact alternative to alarm check valves when a water motor alarm is not required.