... to12" 16bar, 14"to48" 10bar1)Size: DN50~DN1200 U Type Butterfly Valve. Seat: EPDM, high temperature EPDM, food grade EPDM, NBR ... 2"to12" 16bar, 14"to48" 10barSize: DN50~DN1200 U Type Butterfly Valve. Seat: EPDM, high temperature EPDM, food grade EPDM, NBR, ... , Viton, high temperature Viton, Hypalon, Silicon rubber PTFE Bushing: Glass backed PTFEover EPDM, PTFE over NBR, Neoprene. U type butterfly valve