... Wet Alarm Valves 2013 Features: Item no.: ZSFZ100, ZSFZ150, ZSFZ200 inlcuding pressure gauge,water motor gong, short pipes Wet alarm valve (Check valve) 1 ... ZSFZ100, ZSFZ150, ZSFZ200 2) Nominal diameter: 100mm, 150mm, 200mmWet alarm valve (Check valve)1) Item no.: ZSFZ100, ZSFZ150, ZSFZ2002) Nominal diameter: 100mm ... ZSFZ1001001.22201808×φ17.535980×310×450ZSFZ1501501.22802408×φ22 Wet Alarm Valves 2013