Water motor gong (Water motor alarm)
- Certificate: UL Listed / FM Approved
- Standard: UL 753, comply to NFPA 13, 13D, 13R, 72
- Material: Aluminum alloy motor and gong, SS 304 drive shaft and striker, etc.
- Mounting wall: Rigid, thickness 50 -450mm
- W. pressure: 7 ~ 300 psi
- Surface: Red or aluminum
Water motor gong (Water motor alarm), also known as sprinkler alarm or water motor alarm, is a hydromechanical automatic sound warning device actuated by water flow. It is usually conjunct with alarm check valve, dry pipe valve, or deluge valve to sound a local alarm.
While sprinkler system operates, water passes through the water motor gong, the impeller turns and the shaft rotates by high velocity water jet, and the rotating shaft drives a striker assembly which rings the gong, sounding a continuous alarm.
Main parts and feature
Note: It includes standard trim components, including Y strainer, galvanized steel nipples and cast iron pipe fittings.