Alarm valve series
The preaction device is the main component of the pre-action automatic sprinkler system. It consists of a pre-action alarm valve set, control panel, air pressure maintaining device and air supply device. It can be opened by electric, pneumatic, mechanical or other means to enable the water to One-way valve group device that unidirectionally flows into the water spray system and alarms at the same time. The control cabinet and air supply device must provide 220V external power supply.
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Diaphragm type rain alarm valve ZSFM(50-300)
ZSFM(DN50-DN300)
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Explosion-proof diaphragm type rain shower alarm .
ZSFM（50-300）-Ex1.6P
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Preaction alarm valve group
ZSFY(DN100-DN250)
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Piston rain alarm valve
ZSFS-(50-300)-2.5
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Wet alarm valve
ZSFZ-(80-250)
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Wet alarm valve
ZSFZ-(80-250)
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Diaphragm Type Deluge Alarm Valve
ZSFM(50-300)-1.6
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Preaction alarm valve group
ZSFY(DN100-DN250)