The ZSFM type deluge alarm valve operates on the principle of a diaphragm check valve. When the pipeline pressure on both sides of the diaphragm is balanced, the diaphragm remains closed. It automatically opens when the supply system pressure exceeds the pipeline pressure of the sprinkler system, serving as a one-way check valve. It can be combined with other components to form various deluge alarm fire suppression systems, suitable for automatic sprinkler fire suppression systems in hospitals, hotels, shopping malls, factories, airports, entertainment venues, libraries, sports stadiums, and convention centers.