... .DN100,125,150 3.working pressure:1.2mpa deluge valve (fire fighting equipment) 1.Material: Cast Iron 2.Size: DN100mm, 150mm, ... Hydraulic Operated Nominal diameter: 100mm, 150mm, 200mmFlow coefficient : 15~60 (L/min)Nominal working pressure: 1.2MPaStrength test pressure: 4 ... bell : >80db Suitable temperature:4~80°CAutomatic fire deluge valve for fire prevention is a kind of lever-type structure with ...