Seawater Coarse Filtration :
The fluid enters through the inlet pipe the filter and flows through the cylindrical filter element from inside out. The filtration cake accumulating on the element surface causes pressure difference to develop across the filter element. The back-flushing begins when the pre-set pressure difference between inlet and outlet on the filter is reached or pre-determined lapse of time is met. During the back-flushing cycle, the filtering is not interrupted and continues to flow downstream of the filter in the normal manner.