Basket type filter element is mainly used on oil or other liquid pipelines to filter impurities in the pipeline. The area of the filter hole is greater than 2-3 times that of the diameter pipe, far exceeding the filtering area of Y-shaped and T-shaped filters. When the liquid enters the filter basket through the main pipe, solid impurity particles are blocked in the filter basket, and clean fluid is discharged from the filter outlet through the filter basket. When cleaning is required, unscrew the screw plug at the bottom of the main pipe, drain the fluid, remove the flange cover, take out the filter basket, clean it, and then reinstall it. Therefore, use and maintenance are extremely convenient.