... ,Manual-Air-HydraulicDN(NPS)1/2"~2"PN(LB)Class 150LBMain MaterialsCast Iron,GG25,GG40,HT250,HT200, ... company hasformed a gate valve, ball valve, butterfly valve, globe valve, check valve, plug valves, control valves, etc. asthe leading valve product system, with a ... MONEL, INCONEL, Hastelloy, titanium alloys and othermaterials. The valve structure, performance, quality has reached the advanced level of ...