Butterfly valve’s working principle:
The disc fixes a shaft spin herewith the valve close or open. Leak tightness is provided between disc and seal.


  • Minimal loss of pressure
  • Easy to opening and closing
  • Good leak tightness
  • Compact design
  • Easy movement of the disk should be controlled during the assembling
  • Horizontal assembling should be preferred above DN300
Material Structure:Body: GG25 cast iron, Disc: Nickel coated ductile iron
Connection:Lung type
Nominal Diameter:DN25 (1”) – DN300 (12”)
Working Pressure:Up to 16 bars
Temperature Ratings:10ºC to 130ºC
Typical applications:LNG and LPG lines, Fuel oil pipelines