Valve We provide industrial steel valva according to API, ASME ... output by ball valve and gate valve respectively.Metal seated ball valve, below sealed valve and water check valve are the featured ... manual, gearbox, chain wheel, pneumatic,electronic,hydraulic-pneumatic etc.Connection End:flanged, BW, SW, NPT, water type, etc.Materials(casting): WCB ... , F11, F22, F6, F51, F316H, F321, F347, etc Valve