The Pentair 520595 IntelliChlor union set includes two unions for compatible IntelliChlor plumbing connections. Union fittings like these are useful because they make it easier to connect, remove, or service the related cell or assembly without cutting plumbing apart during maintenance.Replacement is often helpful when the original unions are cracked, damaged, worn, or no longer sealing or tightening correctly. Installing the correct Pentair union set can help restore the service-friendly connection points that make system maintenance easier.This OEM union pair is a practical plumbing replacement for compatible IntelliChlor systems that need renewed connection hardware and better serviceability. OEM Pentair IntelliChlor union set Includes quantity 2 unions Fits compatible IntelliChlor plumbing applications Useful when the original unions are damaged or worn Supports cleaner and more serviceable plumbing connections