Stainless steel one-piece ball valve is a kind of valve, which is characterised by compact structure, small volume, light weight, with the advantages of low fluid resistance, easy operation, simple maintenance and so on. This valve is mainly used to cut off or connect the medium in the pipeline, can also be used for fluid regulation and control, especially suitable for pipeline systems containing fibres, tiny solid particles and other media. Stainless steel one-piece ball valve body material is usually 304 (CF8) or 316 (CF8M) stainless steel, has good corrosion resistance, and is Applicable to a variety of working environments. Its engineering diameter range from 1/4 “to 4” (DN6 ~ DN100), engineering pressure up to 1.6 ~ 6.4MPa. A piece of ball valve sealing performance is excellent, large flow capacity, flow resistance coefficient is small, long service life, usually used in sealing requirements of strict occasions, such as control of gases, Liquid, steam media, but also suitable for controlling sewage and media containing fibrous impurities.