Wafer Butterfly Valve, Flanged Butterfly Valve, Lug Type Butterfly Valve manufacturer / supplier in China, offering High - Quality Stainless Steel Pneumatic Actuated with Excellent Sealing Lt Butterfly Valve for General Industrial Use, Durable Cast Iron Manual High - Pressure Resistance Lt Butterfly Valve for Chemical Pipeline, 3 Piece DN10 DN25 CF8 Thread Ball Valve and so on.