High Quality Wet Alarm Check Valve for Fire Fighting

High Quality Wet Alarm Check Valve for Fire FightingIntroductionAlarm Check Valve is core element in wet pipe fire sprinkler systems. It serves a dual purpose which prevents a reverse flow of water (non-return), also provides for the use of the water motor gong. Meanwhile, in the event of variable pressure condition, false alarm is prevented with provision of retard chamber at the external bypass.FeatureStandard: ANSI/ BS/ GBConnection: Flanged as ANSI B16.1/ EN 1092-2Installation: VerticalTest: Factory hydro test 350 psi (2.4 MPa)Temperature: 4°C to 70°CW. pressure: 175/ 300 psi (1.21/ 2.07 MPa)Surface: FBE coating as AWWA C550Main PartsBodyDuctile IronCoverDuctile ironDiscDuctile iron / brass + EPDMStemSS304/galvanized pipeSeatBronze/Cast ironAccessoriesStandard trim & accessories, Retard chamber,Alarm pressure switch, Water motor gong, etc.Technical parameters:ModelZSFZ80ZSFZ100ZSFZ125ZSFZ150ZSFZ200ZSFZ250Norminial diameter(mm)80100125150200250Working pressure(Mpa)1.6MpaSealed test(Mpa)3.2MpaStrength test(Mpa)6.4MpaFlow rate(L/min)15