SPH series security filter housing(precision filter housing) is a kind of filter equipment which is very widely used in industry. The filter housing has a cylindrical shell, uses 304, 316L stainless steel, and can be equipped with different numbers as well as sizes of filter cartridges according to the size of the filtration flow. Various types of filter cartridges such as PP melt-blown filter cartridge, string wound filter cartridge, pleated filter cartridge, etc. are used as filter elements to meet different process requirements. It is widely used in plant sewage systems.