The alarm check valve is an important part of the automatic sprinkler system. When a fire occurs, the closed fire sprinkler head is automatically opened after being heated, the water pressure  in the system side will reduce, then the alarm check valve opens automatically and the hydraulic bell will be driven under the flow pressure to make a sound alarm. Meanwhile, the pressure switch interlocks to start  the fire pump to supply water to the pipeline and also sends an alarm signal to control center.

The wet sprinkler system is the most widely used system in fire fighting system. It's widely used in high-rise buildings, hospitals, hotels, office buildings, shopping malls, warehouses, factories, and underground constructions anywhere water is suitable for fire fighting.

Pauline Lu 

Head of sales Department “SANJING FIRE ”

Phone/Skype/Whatsapp/Wechat: +86-13332933886

Manager@Sanjingfire.com