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DIN 4" Rubber Seat CS Soft Pipe Fitting Wafer Butterfly Valve with Worm Industrial Pn10, Find Details and Price about Butterfly Valve Wafer Type Butterfly Valve from DIN 4" Rubber Seat CS Soft Pipe Fitting Wafer Butterfly Valve with Worm Industrial Pn10 - Like Valve (Tianjin) Co., Ltd.