Product Overview

Complete or replace the pump plumbing connections on compatible Pentair IntelliFlo3® and IntelliPro3® 3 HP pumps with the Pentair 2" / 2.5" Union Kit, part number 410028 / 410028Z. This OEM-style union kit is designed to provide secure, service-friendly suction and discharge plumbing connections for select 3 HP IntelliFlo3 VSF and IntelliPro3 VSF pool pump models.

This kit is especially useful when installing a new IntelliFlo3 3 HP pump, replacing worn unions, or adapting the pump to common 2" and 2.5" pool plumbing configurations. Union-style connections allow the pump to be removed for service without cutting plumbing, making future maintenance easier and cleaner.

Ideal For

The Pentair IntelliFlo3 3 HP 2" / 2.5" Union Kit is ideal for pool professionals and homeowners installing or servicing compatible Pentair 3 HP variable speed pool pumps. It is designed for systems where a secure pump-to-plumbing connection is needed while keeping the equipment pad easy to service.

Best suited for:

• Pentair IntelliFlo3 VSF 3 HP pump installations
• Pentair IntelliPro3 VSF 3 HP pump installations
• Replacing missing, damaged, or worn pump unions
• New pump installation projects
• Service work where the pump needs removable plumbing connections
• 2" and 2.5" pool plumbing configurations
• Equipment pads where easy pump removal is important

Key Features

Designed for IntelliFlo3 & IntelliPro3 3 HP Pumps

This union kit is made for compatible Pentair IntelliFlo3 and IntelliPro3 3 HP pump models. Distributor parts listings show the 410028 / 410028Z union kit as compatible with IntelliFlo3 VSF 3 HP pump models, and parts listings also reference use with IntelliPro3 3 HP pump applications.

Fits 2" and 2.5" Plumbing Applications

The kit supports both 2" and 2.5" plumbing connections, making it a practical choice for common residential pool equipment pad layouts. This gives installers flexibility when matching the pump to existing suction and return plumbing.

Service-Friendly Union Connection

Union fittings allow the pump to be disconnected from the plumbing without cutting pipe. This helps simplify future pump service, replacement, winterization, and equipment pad maintenance.

OEM Pentair Replacement Part

Part numbers 410028 and 410028Z are listed as Pentair union kit part numbers for 3 HP IntelliFlo3 pump applications. Pool360 lists the product as Pentair 410028Z 2" & 2.5" Union Kit for 3HP IntelliFlo3 Pool Pump, while parts retailers commonly cross-reference it as 410028 / 410028Z.

Compatible With Select 3 HP IntelliFlo3 Pump Models

The kit is commonly listed for IntelliFlo3 VSF 3 HP pump models including 011075, 011076, 011077, and 011078. Pool Supply Depot also lists compatibility with 013075, 013076, 013077, and 013078.

Compact Replacement Kit

This is a compact plumbing accessory kit that is easy to keep on hand for installation and service jobs. Pool360 lists the product weight at approximately 1.9 lb with shipping dimensions of 9" x 4" x 5".

Benefits

The Pentair 410028 / 410028Z Union Kit helps ensure a clean, secure, and removable connection between compatible IntelliFlo3 or IntelliPro3 3 HP pumps and the pool plumbing system. It is a small but important installation accessory that helps protect serviceability and makes future maintenance easier.

Key customer benefits include:

• Provides proper union connections for compatible Pentair 3 HP pumps
• Supports both 2" and 2.5" plumbing configurations
• Helps make pump installation cleaner and more professional
• Allows pump removal without cutting plumbing
• Useful for both new installations and replacement service
• Designed for select IntelliFlo3 and IntelliPro3 VSF 3 HP pumps
• Helps reduce downtime during pump service
• Keeps the equipment pad more service-friendly

Specifications

Customer-Facing Q&A

Q: What is the Pentair 410028 / 410028Z Union Kit used for?
A: This kit is used to connect compatible Pentair IntelliFlo3 and IntelliPro3 3 HP pool pumps to 2" or 2.5" pool plumbing.

Q: Does this fit the Pentair IntelliFlo3 3 HP pump?
A: Yes. This union kit is commonly listed for Pentair IntelliFlo3 VSF 3 HP pump models, including 011075, 011076, 011077, and 011078.

Q: Does this fit IntelliPro3 pumps too?
A: Yes, this kit is also commonly referenced for compatible IntelliPro3 VSF 3 HP pump applications.

Q: What pipe sizes does this kit support?
A: It is designed for 2" and 2.5" plumbing connections.

Q: Is 410028 the same as 410028Z?
A: The part is commonly cross-listed as 410028 / 410028Z. Pool360 lists the active part as 410028Z, while other parts listings also reference 410028 for the same 2" / 2.5" union kit application.

Q: Do I need this when installing a new IntelliFlo3 pump?
A: You may need this kit if your pump installation requires replacement unions, if the original unions are missing, or if you want proper removable plumbing connections for 2" or 2.5" pipe.

Q: Can this help with future pump service?
A: Yes. Union connections allow the pump to be disconnected from the plumbing without cutting pipe, making future maintenance and pump replacement easier.

Q: Should this be installed by a pool professional?
A: Professional installation is recommended to ensure the pump connections are properly aligned, sealed, and plumbed to the correct system requirements.