... :Cast Iron,Ducticle Iron, Cast Brass SIZE DN50-300 Swing Check Valve BS4090 DN50-300 Design and Manufacture conforms to BS4090Flange ... working pressure 10bar(1.0Mpa)/16bar(1.6Mpa)Maximum working temperature 120°CSIZE DN50-DN300Testing conforms to GB/T13927 JB/T9092 ... .V-goal mainly produces Gate valve, globe valve, butterfly valve, check valve, fire valve, storm valve, air pipe head and each ...