Fire protection check valve H series

brassseatautomatic

HD Alarm Valve acts as a check valve by trapping pressurized water above the clapper and preventing reverse flow from sprinkler piping. It is used to actuate a fire alarm during flow of water from the sprinkler system. Alarm Valve is UL Listed and FM Approved. •Ductile Iron material to ASTM - A536 •Flanged x Flanged, Grooved x Grooved and Grooved x Flanged available •Variable Pressure Trim with Retard Chamber and Water Motor Gong •Constant Pressure Trim available as an option •Epoxy painted internally & externally •UL Listed and FM Approved