Ball valves and butterfly valves are the most commonly used valves. In some cases, it can be used universally, and in some cases, only one of them can be used. The difference between the two is mainly in the structure and switching principle.
Ball valve: evolved from the plug valve, the opening and closing parts are spheres. The characteristics are: low flow resistance; complete sealing can be achieved under larger pressure and higher temperature; rapid opening and closing; its sealing structure determines its comparative design and corrosiveness; the valve body is symmetrical, which can effectively withstand pipeline pressure, Can cope with high pressure conditions;
Butterfly valve: The opening and closing parts are disc type left and right opening. The characteristics are: simple structure, small size, easy installation; small flow resistance coefficient, rapid opening and closing, and can be used for large-diameter valves; different sealing surfaces can be applied, and various environments, including powdery, granular media, etc.; Butterfly valves are relatively Compared with ball valves, the sealing performance is slightly worse, but among large-diameter valves, it has unique advantages over ball valves; when it is used to adjust the flow, the adjustment range of butterfly valves is not large, while V-type adjustment ball valves have precise adjustment. In addition, in high-pressure pipelines, ball valves have advantages over butterfly valves.
