Product Details  butterfly valve,large butterfly valve,wafer butterfly valve  butterfly valve,large butterfly valve,wafer butterfly valve 1) Standards:  a) Design & Manufacture: BS 5155,API 609,MSS SP-67,MSS SP-68  b) Face to Face Dimension: BS 5155,API 609,MSS SP-67,MSS SP-68  c) End Connection: ASME B16.5, DIN2543-2545 d) Test and Inspection: ISO5208,BS 6755  2) Sizes: 2" - 48" or DN50 - DN1200 3) Pressure Rating: Class150 or PN10 - PN16 4) Material: WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF8M, CF3M, etc.  5) Operated by: Lever, Gear, Pneumatic, hydraulic and Electric actuator