cast iron butterfly valves Size:DN40-DN1200 end flange:ansi b 16.1,en1092,as2129 face to face:ansi b 16.10 top flange: iso 5211 normal pressure: on1.0/1.6mpa body: CI/DI/WCB/ALB/CF8/CF8M disc:DI/ALB/rubber lined stem:416/304/316/431/17-4PH seat: NR/Hypalon/EPDM/PTFE suitabletemperature:-45c-150c water,air,gas