Product introduction
ZSFG Lever-type deluge alarm valve device(Hereinafter referred to as deluge valve)belongs to lever-type structure and has the mechanism anti-reset function. The product is originated in China and was the first product got GB5135.5-2003 Standard which was tested by National fixed fire extinguishing system and fire-resistant component quality surveillance test center. Deluge valve device is widely used in all kinds of open system (System side pipeline is as open sprinkler),such as deluge system, water curtain system and water mist system. With the pressure of diaphragm chamber decreasing the valve flap will be opened by the pressure of water supply side. There are several modes to release the pressure of diaphragm, such as electric guidance modes, wet guidance and dry guidance modes.
Operation instruction
Electric guidance mode is controlled by fire alarm system. When a fire occurs fire alarm system send out control signal and open electromagnetic valve to release the pressure of diaphragm chamber. Then deluge valve will be opened and a lot of water will be sprayed from open sprinkler. At the same time alarm signal will be sent out because a little water run in the pipe can drive hydraulic alarm and pressure switch and realize the purpose of extinguishment and alarm.
Wet guidance mode is to connect diaphragm chamber and wet transmission pipe network. Wet transmission pipe network is filled with glass bulb sprinkler. When a fire occurs the ambient temperature will be increased and the sprinkler will be worked to release the pressure of diaphragm chamber and then open deluge valve.
Dry guidance mode is to connect sprinkler with glass bulb and with dry transmission pipe network with the switch of low pressure alarm and air compressor. Dry transmission network is filled with air with a certain pressure. When a fire occurs the ambient temperature will be increased and the sprinkler will be worked to guide the pressure of pipe network drop. The switch of low pressure alarm will be started to open the electromagnetic valve in diaphragm chamber and the pressure of diaphragm chamber will be released and deluge valve will be started.
The device should be installed vertically and in frost region it should be installed at ambient temperature higher than 4℃. Deluge valve system of Wet guidance Mode should be used at ambient temperature not less than 4℃ and not higher than 70℃.
The device and foam system can also be composed to foam deluge extinguishing system to extinguish explosive, fluidity ,combustible and dangerous liquid fire.
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