Water Motor Alarm WMA-1

  • Supplied by dedicated outlet in valve trim line or retard chamber
  • Corrosion-resistant aluminum alloy gong, gong-mount, and water motor housing
  • Must be mounted to a rigid wall surface
  • Furnished with approved ¾-inch (20 mm) Y-strainer for use in alarm line
  • UL and C-UL Listed; FM, VdS Approved, and LPCB Approved
  • Uses energy-efficient lightweight impeller design capable of producing a very high sound level
  • Polymer bearings do not require lubrication
  • Can accommodate range of wall thicknesses from 2 to 18 inches (50 to 450 mm)
  • Intended for use with appropriate fire protection system valves (alarm, dry, deluge)


Lightweight yet rugged, the Tyco® Model WMA-1 water motor alarm is a hydraulically operated outdoor alarm designed for use with fire protection system waterflow-detection valves. It can easily be mounted to any type of rigid wall. It can be used in conjunction with alarm check, dry pipe, deluge, and preaction valves to sound a local alarm.