Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
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SW-21-028 | Swimables Pentair IntelliFlo3 2" x 2.5" Union Kit | 410028
Fits these models (3)
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Goes with this part
CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
Other parts on the same Pentair Intelliflo3 VSF Pump
The Swimables SW-21-028 Union Kit is a direct replacement for Pentair part 410028 (also seen as 410028Z) and is designed specifically for 3 HP IntelliFlo3 / IntelliPro3 pumps. This union assembly accommodates both 2″ and 2.5″ piping systems, enabling flexible plumbing connections in retrofit and new installations. The kit includes union nuts, gaskets, and adapters to provide leak-resistant, secure unions. Built using durable pool-grade materials, it restores proper pump coupling, simplifies servicing, and ensures a tight fit with minimal effort.
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Dual-Size Compatibility (2″ & 2.5″): The kit supports both 2-inch and 2.5-inch plumbing setups, offering versatile application across varying system designs.
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OEM Union / Adapter Components: Includes union nuts, mating adapters and gasket seals designed to replicate Pentair’s factory union layout with a proper seal and fit.
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Engineered for IntelliFlo3 / IntelliPro3 Pumps: Tailored for the 3-HP models of the IntelliFlo3 / IntelliPro3 lines, it ensures direct compatibility without guesswork.
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Secure, Leak-Resistant Seal: Designed to maintain a tight, reliable union under pressure, minimizing leaks and preserving system integrity.
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Ease of Installation & Maintenance: Drop-in style with included gaskets and parts, reducing service time and making it user-friendly for both technicians and DIYers.
- Pentair IntelliFlo3 3HP Pumps
- Pentair IntelliPro3 3HP Pumps