The steam filter is an indispensable device on the pipeline for transporting media. It is usually installed at the inlet end of pressure-reducing valves, pressure relief valves, water leveling valves, or other equipment to eliminate impurities in the medium to protect the normal use of valves and equipment. When the fluid enters the filter cartridge with a certain specification, the impurities are blocked, and the clean filtrate is discharged from the filter outlet.