| 摘要 |
PURPOSE: An alarm valve is provided to perform an alarming process with a simple structure by installing a switch pin on a rubber packing formed on the side of the alarm valve. CONSTITUTION: An alarm valve includes one end connected to a secondary side combined with a sprinkler, and to the other side connected to a first side combined with the sprinkler for offering the pressure reduction and water blocking function. The alarm valve includes a main body(110) with a pathway for flowing fire distinguishing liquid, a butterfly disk as a water blocking valve, an alarm disk(190) hinge connected to the butterfly disk, a rubber packing(181), and a switch pin(180).
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