... :2008 CE Extension Rod Butterfly Valve:DN50-DN2400 PN1.0/1.6MPaEnd flange: EN 1092Top flange: ISO 5211F/F: EN 558 ... 420 431SeatNBR, EPDM,Series 20 BodyCI, DI, WCBDiscDI, ALB, CF8M, 1.4529 Stem416, 420, 431SeatNBR, EPDMSuitable temperature-10°C~80°CSuitable ... Inspection Goods:P-T Diagram & Performance Curve of Flow Rate for All Series:Product Show and Description ...