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Triple Eccentric Flange Butterfly Valve for Petrochemical Industry Use - Oil Valve with Tsg Certified API 609 Worm Gear Operated, Find Details and Price about Oil Valve Triple Eccentric Butterfly Valve from Triple Eccentric Flange Butterfly Valve for Petrochemical Industry Use - Oil Valve with Tsg Certified API 609 Worm Gear Operated - Top Valves Manufacture(Nantong) Co., Ltd.