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D641X-16q 2 1/2" DN65 Pneumatic Double Flanged Ductile Iron EPDM Pneumatic Flange Butterfly Valve, Find Details and Price about Pneumatic Flange Butterfly Valve Flange Butterfly Valve from D641X-16q 2 1/2" DN65 Pneumatic Double Flanged Ductile Iron EPDM Pneumatic Flange Butterfly Valve - Fudesheng (Jiangsu) Automatic Control Valve Manufacturing Co., Ltd