As dirty water is pumped into the filter and pressure increases on the outside of the filter element, the water pressure compresses the rings tightly together increasing efficiency.
Grooves in the disc rings criss-cross forming a network that traps both organic and inorganic contaminants from the water source. This design filters the dirty water thoroughly - not only on the outer surface of the cylindrical disc filter element - but through the entire depth of every ring groove. Clean water exits from the inside of the cylinder.