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Pneumatic/Electric Operate Ductile Iron Body CF8 Disc EPDM/ PTFE Seal Wafer Butterfly Valve, Find Details and Price about Butterfly Valve Wafer Butterfly Valve from Pneumatic/Electric Operate Ductile Iron Body CF8 Disc EPDM/ PTFE Seal Wafer Butterfly Valve - Tianjin Tanggu General Valve Group Co., Ltd.