The water enters through the inlet side of the head assembly. Water flows downward through the housing and is forced through the cartridge assembly. As the water flows through the cartridge, this filtered water is captured by the center distributor and is directed to the outlet side of the head and to the distribution system.
In the rinse position the water enters through the inlet side of the head assembly, with the optional bottom drain valve open, the water flows past the surface of the cartridge and runs to drain. This flushing action will clean the surface of the cartridge. Once the accumulated debris has been flushed to drain the valve is closed and the ONE Filter is ready to resume filtration.