Wet alarm valve This setup represents a kind of fixed fire extinguishing system commonly used in automatic sprinkler system. It is composed of wet alarm pressure switch, Delay device,, Hydraulic alarm, Valve including valve setetc., Water fire signal, Flow indicator valve and closed sprinkler. This setup is in standby state for an extended period time, Full of pressure water through the when somewhere, Pipeline network there exists a fire protection area, The environment temperature, Make the temperature sensitive element on the nozzle ball action, Falls off automatic startup, Seal assembly system, The water spray straight to the and provide, Fire area an alarm signal alarm, Fire control, For the intention behind achieve purpose. It works well for buildings which can extinguish fire with water, Usually installed in production places, Warehouses, Hotels, Shopping malls, Hospitals, Theatres, Office buildings, High, Rise buildings and garages, Etc.