Zodiac - Universal half union kit - R0522900

Zodiac – Universal half union kit – R0522900

The Zodiac R0522900 is a genuine replacement universal half union kit designed for use with Zodiac Jandy DEV series DE filters and CS series cartridge filters. The half union fitting is a critical plumbing connection component that allows the filter to be securely coupled to the pool’s water circulation pipework. Using an original Zodiac replacement part ensures a precise, leak-free fit and maintains the integrity of the filtration system over time.

This kit includes a 2-inch by 2.5-inch universal half union fitting, making it compatible across multiple filter models without requiring bespoke or model-specific plumbing adaptations. The universal design simplifies installation and reduces the need to source multiple different fittings for a pool service or retrofit situation. The fitting is manufactured to Zodiac’s quality standards, ensuring dimensional accuracy and durability in continuous wet-environment use.

Compatibility and technical details

The R0522900 universal half union kit is confirmed compatible with the following Zodiac Jandy filter models: DEV48 and DEV60 DE (diatomaceous earth) filter models from the DEV series, as well as CS series cartridge filter models CS100, CS150, CS200, and CS250. This broad compatibility across both DE and cartridge filter types makes it a versatile spare part suitable for a wide range of Jandy-equipped pool installations. The 2″ x 2.5″ sizing refers to the pipe connection diameter and the union body dimension respectively, which are standard sizes within the Jandy plumbing ecosystem.

As a genuine Zodiac part, it is manufactured to the original specifications, ensuring correct thread engagement, sealing performance, and long-term resistance to pool water chemistry including chlorinated and saline environments. Correct half union fittings are essential to prevent water leaks at the filter head connection, which can cause pressure loss and reduced filtration efficiency.

Suitability and application

This half union kit is intended for both residential in-ground and above-ground pool installations that use Zodiac Jandy DEV or CS series filtration equipment. It is particularly relevant for pool maintenance professionals and pool owners undertaking filter servicing, pipe replacement, or filter reinstallation work. If the existing half union fitting on a Jandy DEV or CS filter is cracked, stripped, or leaking, the R0522900 provides a direct original-specification replacement. It is not a universal fitting for all pool brands and should be used specifically within the compatible Zodiac Jandy filter models listed above to guarantee correct fitment and performance.