1.Its used for oil filter in BOLL main engine and for removing the solid and gelatinoid which efficiently control the pollution level.Stoste enter into filter from entrance and
outflow from exit after impurities held up by filter element;

2.Then liquid flow into the clear liquid tank.Along with filtration proceed,filter cake layer is constantly thickening
and filtration resistance is increasing;

3.When its up to pressure difference value,filtration component need back wash.Oil inlet and oil outlet should be closed then
compressed gas come into the tank which filter the remaining liquid thoroughly;

4.When backwashing filtration column,compressed gas blow up filtration cloth which
makes the impurities between filter cake and filter cloth fall off and be removed from lower discharge outlet.