wet alarm valve,fire alarm valve 1.model:ZSFZ100,ZSFZ125,ZSFZ150,ZSFZ200 2.ductile cast iron 3.ISO and CCCF certified wet alarm valve,fire alarm valve1)Nominal diameter ... , hotels, shops, recreational places, hospitals,cinemas, offices, garages. SpecificationRated W.P.(MPa)Nominal Dia.(mm)Flange Diameter(mm)Symmetric Hole Diameter ...