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Factory Ductile Cast Iron Di Ci Stainless Steel Brass EPDM Seat Water Resilient Wafer Lug Lugged Type Double Flange Industrial Butterfly Valve with Good Quality, Find Details and Price about Class150 Butterfly Valve and Pn10/16 Class 125/150 JIS 5K/10K Butterfly Valve from Tianjin Zhongfa Valve Co., Ltd.