... ,fire alarm valve 1.model:ZSFZ100,ZSFZ125,ZSFZ150,ZSFZ200 2.ductile cast iron 3.ISO and CCCF certified wet alarm valve,fire ... "),150mm(6"),200(8")2) Nominal working pressure: 12 bar (1.2MPa)3) Strength test pressure: 48 bar (4.8MPa)4 ... NO. and Dia. φA (mm)ZSFZ1001.2DN1002201808*φ18ZSFZ150DN1502852408*φ22ZSFZ200DN20034029512*φ22 wet alarm valve