Wet Alarm Valve Structure:
Wet Alarm Valve is a kind of equipment that can quickly start the fire fighting equipment to extinguish the fire and send out the alarm signal when the fire occurs. Mainly includes: wet alarm valve, time delay, pressure switch, hydraulic alarm, water butterfly valve and pressure gauge.
Wet Alarm Valve Working Principle:
Wet Alarm Valve is a non-return valve and can be opened when the alarm of the two roles of the valve as a whole, mainly by the valve and the valve flap, in the valve seat ring on the sealing surface, there are grooves and holes leading to the time-delay device and the hydraulic alarm bell; flap will be the fire fighting sprinkler system is separated into the system side and the side of the water source. When a fire occurs, the system side of the nozzle action of water spray, the valve is automatically opened under the action of differential pressure, the water flow through the grooves and holes in the seat ring to the time delay, and then flow to the pressure switch and hydraulic alarm. Hydraulic alarm alarm sound at the same time the pressure switch action, the output signal to start the sprinkler pump to extinguish the fire.