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The NU-CALGON 4623-40 is a high flow carbon and sediment replacement cartridge designed for the Nu-Plus HFS filtration system. This cartridge handles dual-stage filtration by combining carbon media for chemical reduction with sediment filtration to remove particulate matter from water supplies. It is a direct replacement component intended for service technicians and water treatment professionals maintaining Nu-Plus HFS filter housings in HVAC, plumbing, or water treatment applications.
This replacement cartridge is suited for use in high flow filtration scenarios where both carbon and sediment removal are required. Typical installation settings include commercial and residential water treatment systems, HVAC equipment with water-side filtration requirements, and plumbing systems where water quality directly affects equipment performance and longevity. Service intervals vary based on water quality and flow demand.
Designed as a direct replacement cartridge for NU-CALGON Nu-Plus HFS high flow filter housings. Consult the filter housing documentation to confirm cartridge sizing and thread compatibility before installation.
Installation should be performed by a licensed plumber or qualified water treatment technician. Shut off the water supply and relieve system pressure before opening the filter housing. Follow local plumbing codes and the housing manufacturer guidelines for cartridge replacement intervals and torque specifications. Flush the system after installation to clear any loose carbon fines before returning the system to service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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