Alarm Valve Model H
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 flow of water from the sprinkler system. Alarm Valve is UL Listed and FM Approved.

DESCRIPTION:
- Constructed from high-quality ductile iron ASTM – A536 material, offering exceptional strength and corrosion resistance.
- Internally and externally coated with fusion-bonded epoxy to ensure superior protection against environmental and operational wear, enhancing longevity.
- Available in multiple configurations—Flanged x Flanged, Grooved x Grooved, and Grooved x Flanged—to suit diverse installation needs.
- Operating Pressure: Rated for a maximum operating pressure of 17.5 Bar (250 PSI), ensuring reliable performance in demanding fire protection systems.
- Sizes: Offered in 80 NB, 100 NB, 150 NB, and 200 NB, catering to a range of flow requirements.
- Trim Options:
- Variable Pressure Trim equipped with a Retard Chamber and Water Motor Gong for precise pressure control and audible alarm signaling.
- Constant Pressure Trim is available as an optional configuration for specific applications.
- UL Listed and FM Approved, meeting global safety and performance standards.