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Conventional sprinkler 
Alarm Check Valve

Alarm Check Valve
Model P
UL, cUL Listed Alarm Check Valve 4กจ/6กจ Size A Durable Designed For Vertical / Horizontal Easy Trimming & Installation
The Protector Model P alarm check valves of 4กจ/ 6กจ are used in wet pipe sprinkler system, including vertical and horizontal position. It is installed between water-supply Pressure system (Pressure Pump) and automatic sprinklers. The bulb of sprinklers / fusible link, when heated by fire, the sprinkler start to operate, this will change the pressure differential within the alarm valve and open the clapper, by which the water flow signal will be transmitted to be electrical signal and alarm device will sound alarms. Meanwhile the pump will operate automatically to supply the system with water.

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