Gate Valve, Globe Valve, Ball Valve manufacturer / supplier in China, offering Industrial 3-Piece Threaded Ball Valve Q611f 16p Air Operated Zero Leakage Design, 304/316 Stainless Steel NPT/Bsp Thread Ball Valve with Double Acting Pneumatic Actuator, Q611f Pneumatic Actuated 3-Piece Stainless Steel Female Thread Ball Valve 1000wog and so on.