Bell GA

HD Water Motor Gong is a hydraulically operated outdoor alarm for use with fire protection systems. It is light weight and durable. In case of Fire-Sprinkler Systems the Alarm Gong can be installed on a wall with the motor inside the building and the gong outside for maximum audibility. The gong, protection cover and motor housing are made of corrosion resistant aluminium alloy. • Hydraulically operated mechanical bell used along with fire protection system valves • Corrosion resistant Aluminium alloy material, epoxy coated all over • Wall mounted or direct online mounting type • UL Listed and FM Approved SPRINKLER ALARM MODEL - GA HD Sprinkler Alarm is a hydraulically driven mechanical bell. It does sound a continuous alarm when the sprinkler system operates. The impeller and drive shaft are energy efficient, made from light weight nonmetallic material and do not require any external lubrication. The gong, protection cover and motor housing are made of corrosion resistant aluminium alloy. Sprinkler Alarm with mounting Type-B is wall mounting type. Type-B is suitable for 50 to 250 mm thick wall and curves with 325 mm long drive shaft as standard supply. For wall thickness 250 to 450 mm or longer a special extension drive shaft can be supplied on request OPERATION When the sprinkler system is activated by fusing of one or more automatic sprinklers at fire condition, the water flows through the Alarm Valve/Deluge Valve and enters the sprinkler alarm through the nozzle, creating a high velocity jet which strikes the impeller causing the drive shaft and the striker arm assembly to rotate.