Pentair 3" Union Kit | IntelliFlo3 VSF & IntelliPro3 VSF 3.0 HP | 410029

The Pentair 3" Union Kit (410029) is the OEM replacement union kit for the IntelliFlo3 VSF and IntelliPro3 VSF 3.0 HP variable speed pool pumps. This kit is sized specifically for the 3-inch plumbing connections on 3.0 HP models — it is not interchangeable with union kits for smaller pump configurations.

⚠️ IMPORTANT: THIS LISTING IS A KIT — NOT A SINGLE UNION
This listing includes the complete 3" union kit (2 unions) as supplied by Pentair for the IntelliFlo3 VSF and IntelliPro3 VSF 3.0 HP pumps. Confirm the kit contents against your equipment's parts diagram before ordering individual components separately.

The union kit provides the plumbing connection points between the pump and the pool's circulation piping, allowing the pump to be disconnected from the plumbing system for service or replacement without cutting pipe. Using the correct 3-inch kit ensures a leak-free, properly rated connection on the high-flow plumbing required by the 3.0 HP IntelliFlo3 and IntelliPro3 platforms.

Specifications

Fits Into

Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.

Pro Tip

The 3-inch union kit (410029) is specific to 3.0 HP IntelliFlo3 and IntelliPro3 models. Pentair also offers union kits sized for lower HP configurations — confirm your pump's horsepower rating and plumbing diameter before ordering. When the pump is out of service for union replacement, it is also a good opportunity to inspect the pump's lid O-ring and volute O-ring and replace them if they show any signs of flattening or cracking.