Globe's Model WM Water Motor Alarm is a hydraulically operated outdoor alarm for use with fire protection systems. It is light weight yet durable, and can be used in conjunction with alarm check, dry pipe, deluge, and preaction valves to sound a local alarm. This water-powered system eliminates the need for an electrical alarm and will operate even if electrical power is lost.
WATER MOTOR ALARM MODEL WMGFV-505 (.pdf)
Model WM – Water Motor Gong: Where water motor alarms are specified for use in wet-pipe sprinkler systems they shall be specifically listed for such use. Water motor gongs shall be constructed and installed to provide a “local” audible alarm upon activation of a water-based sprinkler system and rated for a working pressure of 175 psi. Water motor gong shall be UL listed and FM approved. Water motor gong shall be the Model MW; as manufactured by Globe Fire Sprinkler Corporation.
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