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D641X-16q DN100 4inc Premium Flanged Wcb Butterfly Valve Soft Sealed with Pneumatic Actuator, Find Details and Price about Pneumatic Flange Butterfly Valve Flange Butterfly Valve from D641X-16q DN100 4inc Premium Flanged Wcb Butterfly Valve Soft Sealed with Pneumatic Actuator - Fudesheng (Jiangsu) Automatic Control Valve Manufacturing Co., Ltd