Model: BS-HBC Metal Seated Butterfly Valves Nominal Diameter: 200-1500mm Nominal Pressure: 0.45MPa, 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: Kubota Metal Seated Butterfly Valves has unique seat design for tight shut off and long service life. The stainless seat is composed to ductile cast iron by means of internal chill casting.