- Feed from the pump discharge is piped into the Doxie inlet which enters tangential to the cyclone cone. Much like a whirlpool, the liquid then rotates at a high velocity
- Cleaned liquid spins into the center of the cyclone and is forced upward and out the Doxie overflow discharge. This clean stream is then routed through tubing to the place of usage - the mating surfaces of the shaft seal or to the bearings.
- Sand, dirt and other very fine particles are thrown to the wall of the cyclone and pass downward and out the Doxie underflow discharge.