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 the flow of water from the sprinkler system. Alarm Valve is UL Listed and FM Approved.
Features:
Ductile Iron material of construction (ASTM - A536)
Flanged x Flanged, Grooved x Grooved and Grooved x Flanged available
Rated for a maximum of 17.5 Bar (250 PSI) operating pressure
Size: 80, 100, 150 and 200 NB
Variable Pressure Trim with Retard Chamber and Water Motor Gong