The opening and closing part of the globe valve (stopvalve, GlobeValve) is a plug-shaped valve disc. The sealing surface is flat or sea cone surface, and the valve disc moves linearly along the center line of the valve seat. The movement form of the valve stem, (common name: concealed stem), also has a lifting and rotating stem type, which can be used to control various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. flow. Therefore, this type of shut-off valve is very suitable for shutting off or regulating and throttling. Since the opening or closing stroke of the valve stem of this type of valve is relatively short, and it has a very reliable shut-off function, and because the change of the valve seat opening is proportional to the stroke of the valve disc, it is very suitable for regulating flow.