Promotional Cheap Dn65 Brass Fire Hydrant Valve for Fire Fighting

ZSFZ system is a common fixed fire extinguishing system,whick compreses wet alarm valve, a delay, a hydraulic force alarm and other parts(such as pressure switch,water flow indicator and closed sprinkler nozzle). The system stays under a standby state all the time. The pipe network is full of pressurized water. When a fire occurs in the protected area, the environmental temperature will rise and make the temperature sensitive element on the sprinkler nozzle (glass ball) move, the sealed module fall, the system will be started automatically to directly spray the water to the fire area,. It will also send out alarm signal to realize the purposes of alarming, fire extinguishing and fire control.Applicable to architectures where water can be used to put out fire, and is usually installed at the production sites, warehouses, inns, shopping mall, hospitals, theaters,offices,high-rise buildings and garages with fire hazards.