U type butterfly valve Material:s.s c.s DN:2"~48". ... , carbon steel, 304S. S, 316S. S and aluminum bronze3)Materials:Working Pressure: 2"to12" 16bar, 14"to48" 10bar1)Size: DN50~DN1200 U Type Butterfly ... iron, carbon steel, 304S. S, 316S. S and aluminum bronze3)Materials:Working Pressure: 2"to12" 16bar, 14"to48" 10barSize: DN50~DN1200 U Type Butterfly ...