Vane Metal Seated Butterfly Valves Nominal Diameter:300-1500mm Nominal Pressure:0.75MPa, 1.0MPa Materials Body:Ductile Cast Iron(FCD450-10) Disc:Ductile Cast Iron(FCD450-10) Stem:Stainless Steel(SUS403) Disc Seat:Special Stainless Steel Note:Toothed Vane Metal Seated Butterfly Valves are used to control the flow and can be reduced the cavitation by toothed vane of the disc of the valve.