Wafer Check Valve Manufacturer in China: Dual Plate Wafer Check Valve, Cast Iron, Ductile Iron, Wafer, DIN 3202, ISO 5752, DIN, BS, DN50 - 450, PN16. Body material: Cast Iron, Ductile IronType: Wafer.Face to Face: DIN 3202, ISO 5752.Flange: DIN, BS, UNI, ISO, ANSI.Working Pressure: DN50 - 450: PN16…