High-Performance Butterfly Valve Spherical Disc Valve- SDVModel: SDV Design: Wafer Type High Performance Double Eccentric Disc Design Butterfly Valves Body: ASTM A 216 Gr. WCB / A 351 Gr. CF8 / CF8M Size Range: 1.1/2″ to 36″ Shaft: AISI 410 / 304 /316 Disc: ASTM A 351 Gr. CF8 / CF8M Seat: PTFE (EPDM / Metal to Metal available on Request) Temperature: 180°C (Soft Seating), 600°C (Metal to Metal) Pressure rating: PN 10 / PN 16 / PN 25 End Connection: As Per ANSI B 16.5 Class 150, Class 300