Strainer is an indispensable device on the pipeline of the conveying medium. It is usually installed at the inlet of a pressure reducing valve, a pressure relief valve, a fixed water level valve or other equipment to eliminate impurities in the medium to protect the normal operation of the valve and equipment. use. When the fluid enters the filter cartridge with a certain specification filter screen, its impurities are blocked, and the clean filtrate is discharged from the filter outlet. When cleaning is required, just take out the detachable filter cartridge and reload it after treatment, the use and maintenance of the filter is extremely convenient.