Type:Butterfly Valves Place of Origin: Liaoning, ChinaBrand Name: TKFM Model Number: D371X-16QApplication: General Temperature of Media: Medium TemperaturePower: PNEUMATIC Media: WATERPort Size: customizable Structure: BUTTERFLYStandard or Nonstandard: StandardDesign Standard:GB/T12238-1989 JB/T8692-1998Flange connection lenghth: GB/T9115.1-2000 Structural Lenghth:GB/T12221-1989Test pressure: GB/T13927-1992;JB/T9092-1999Working Temperature: -20°C to 110°CEPDM Seat-10°C to 80°C NBR SeatBody material: cast iron or ductile ironSize: DN50 To DN1200color: Blue