The disign and manufacturing of Flange Connection Butterfly Valve are in accordance with China's standards

Basic structure type of Flange Connection Butterfly Valve (the disc shaft coincide with the center of valve body and valve seat)

A. D41F4 whole lining valve body/whole disc lining layer/double D matching of lining layer disc and disc shaft
B. D41F46 whole lining type
C. D41F46(46)/P half lining Butterfly Valve body/stainless steel disc/double Dmatching of disc and disc shaft.