D941X-1 flange butterfly valve apply to hydraulic power stations, water conservancy and other industries: civic water supply, sewerage, as a open-close utensil of controlling medium flow and used as a discharge regulator of medium. Feature 1) Standards: a) Manufacture: GB12238, JB/T8527, API609 b) Face to face/end to end dimensions: ANSI B16.10, GB12221 c) Pipe flange: JB/T74 90, GB12380, HG20615~20635, SH3006, ANSI B16.5 d) Testing and inspection: GB/T13927, API598 2) Body materials: CI, DI, WCB, SS Disc: DI, SS304, SS316, Aluminum Bronze Split Stem: WCB, SS416, SS304, SS316 Seat: NBR, EPDM, PTFE, VITON 3) Flange drilling: DIN PN10/PN16 BS4504, BS 10D/E ISO2084, ISO2531 ANSI 125/150, AS2129 ASA125/150 JIS 5K/10K 4) Nominal Diameter: DN500~1400. 5) Actuator: Electric 6) The product is 1.6Mpa pressure level, valve body made up ductile iron.