Paramount PCC2000 Rotating Nozzle Cleaning Head [Lt Blue] (004 552 5020 06) divingboards The multiple cross reference numbers give The multiple cross reference numbers give this cartridge practical value because filter service is most accurate when the replacement is matched to known application identifiers An impeller like this is useful because it restores the main water moving function inside the pump while keeping compatibility with the original Hi Flo side discharge design That helps restore automated cleaning performance while keeping the rest of the system intact A rotating nozzle cleaning head helps provide automated in floor cleaning action in a compatible Paramount PCC2000 system