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DIN Pn16 Class 150 Wafer Butterfly Valve Cast Steel Stainless Steel Cast Iron API609 Wcb CF8 CF8m, Find Details and Price about Flange Wafer Butterfly Valve Pneumatic Butterfly Valve from DIN Pn16 Class 150 Wafer Butterfly Valve Cast Steel Stainless Steel Cast Iron API609 Wcb CF8 CF8m - Zhejiang Longgong Valves Technology Co., Ltd.