Application scope of globe valve and ball valve: As one of the most important cut-off valves, globe valve plays an important role in the aerospace field. As an important component of aerospace equipment, the globe valve realizes the functions of medium transmission, cut-off, adjustment, etc., and its sealing performance directly affects the safe and reliable operation of aerospace equipment. Studying the influencing factors and influencing laws of typical globe valve sealing characteristics has guiding significance for the structural design of the valve sealing pair, so as to improve the sealing performance and reliability of the valve. Ball valves are widely used in petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electric power, municipal, steel and other industries, and occupy a pivotal position in the national economy. It has the action of rotating 90 degrees. The cock body is a sphere with a circular through hole or channel passing through its axis.
