Union Connector Kit for EcoStar, TriStar and NorthStar Pumps
Product Overview
What pool techs reach for when resolving suction-side air leaks and plumbing union stress on Hayward high-efficiency pumps.
The genuine Hayward SPX3200UNKIT Union Connector Kit provides the factory 2-inch by 2.5-inch union assemblies engineered specifically for TriStar, EcoStar, and NorthStar pump series. Built with heavy-duty thermoplastic nuts and factory-spec O-rings, this kit reliably handles high hydraulic pressure while eliminating air leaks at the pump intake and discharge ports. It is the standard specification replacement to restore a watertight seal without needing to replumb the pad.
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Benefits & What Makes It Different
Direct OEM Compatibility
Engineered specifically for Hayward EcoStar, TriStar, and NorthStar pool pumps for an exact dimensional fit.
Complete Dual Union Set
Includes two union nuts, two connector tailpieces (2" socket x 2.5" spigot), and two sealing O-rings for full pad service.
Prevents Suction Air Ingestion
Fresh EPDM O-rings and reinforced threads stop micro-leaks that cause pump priming failure and cavitation.
Compatibility
- Hayward EcoStar Variable Speed Pumps (SP3400VSP series)
- Hayward TriStar Single and Variable Speed Pumps (SP3200 series)
- Hayward NorthStar Pumps (SP4000 series)
When To Use This
Pro Tip
Never use a wrench or channel locks to tighten these union nuts—hand-tightening plus a quarter-turn is sufficient. Always apply a thin coat of silicone-based pool lubricant to the O-rings; avoid petroleum jelly, which degrades EPDM rubber quickly under high heat and hard water conditions.
Common Questions & Instructions
How do I know if my Hayward pump union connectors need replacement?
Look for water dripping beneath the union nuts when the pump turns off, visible hairline cracks on the plastic collar, or persistent air bubbles in the pump basket indicating suction-side air leaks.
What pipe sizes does the SPX3200UNKIT connector accommodate?
The tailpieces feature dual sizing: 2-inch female slip (socket) on the inside to glue 2-inch PVC pipe, and 2.5-inch male slip (spigot) on the outside to fit inside a 2.5-inch fitting.
Can I install the SPX3200UNKIT union kit myself?
Yes, installation is DIY-friendly. Simply shut off the equipment, unthread the old union collars, replace the O-rings, lube them with silicone-based lubricant, and hand-tighten the new nuts.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
