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DIN Pn16 DN50 DN100 API 150lb Cast Iron NBR EPDM Handle Operated Wafer Butterfly Valve, Find Details and Price about Butterfly Valve Wafer Butterfly Valve from DIN Pn16 DN50 DN100 API 150lb Cast Iron NBR EPDM Handle Operated Wafer Butterfly Valve - Zhejiang J-Valves Fluid Equipment Co., Ltd.