Grundfos Pumps 506172 Circulating Pump Cartridge KitThe Grundfos Pumps 506172 Circulating Pump Cartridge Kit is a high quality replacement designed for UP15 circulating pumps. This cartridge kit provides a precise fit for dependable operation and minimal downtime, making it an ideal choice for maintaining steady water flow in residential and light commercial applications. Designed specifically for the UP15 family, the kit matches the original part numbers UP15 18SF and UP15 18SU, ensuring compatibility

delivering peace of mind with every startup

it helps restore fast

Installation: Easy to replace

Designed for reliable performance under demanding conditions

Its compact design keeps installation straightforward and supports easy inspection and replacement when needed

a heavy-duty Butyl/EPDM diaphragm

This electronic oil igniter is built for accurate

this replacement part helps deliver consistent results across service intervals

stable regulation

ideal for replacement or new installations in draft inducer applications

Effective sealing to protect the pumping system from leaks

Keep your hot water dependable with a trusted Bradford White burner assembly built for performance and longevity