The Waterway 400-5961-2B Union Assembly is a genuine replacement fitting designed for Waterway ProClean filters and compatible pool/spa systems. This union features a 2.5″ connection with a 2″ slip tailpiece, gasket, and reducer, providing a secure, leak-free connection between plumbing lines and filter housing. Built with high-grade materials, it ensures long-lasting durability and a reliable seal for smooth water flow.
Features
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OEM Replacement Union — Designed for Waterway ProClean filters
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Versatile Connection — 2.5″ union with 2″ slip tailpiece for flexible plumbing setups
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Complete Assembly — Includes gasket and reducer for a tight, reliable seal
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Durable Construction — Made from corrosion- and chemical-resistant plastic
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Easy Installation — Threaded design for quick, tool-free maintenance
Benefits
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Ensures leak-free and secure plumbing connections
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Reduces system downtime with easy installation and maintenance
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Extends the lifespan of filter and pump connections
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Provides compatibility across multiple pool and spa systems
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Maintains efficient water circulation and system pressure
| 5 star | 50% | |
| 4 star | 50% | |
| 3 star | 0% | |
| 2 star | 0% | |
| 1 star | 0% |
Verified ownerInstallation was straightforward and performance has been reliable.
Verified ownerHappy with the purchase. No complaints.
Verified ownerHad no problems setting this up. Everything fit perfectly.
Verified ownerBeen using it for a few weeks and it's been solid.
Verified ownerThis made pool maintenance much easier. Definitely recommend.
Verified ownerThis made pool maintenance much easier. Definitely recommend.
| Specification | Details |
|---|---|
| Product Model | 400-5961-2B |
| Brand | Waterway |
| Type | Union with Gasket & Reducer |
| Connection Size | 2.5″ Union × 2″ Slip Tailpiece |
| Compatible Systems | Waterway ProClean Filters |
| Components Included | Union, Gasket, Reducer |
| Material | High-strength, chemical-resistant plastic |
| Function | Creates a secure, watertight plumbing connection |
| Installation | Direct OEM replacement |
| Application | Pool & Spa Plumbing Systems |
| Warranty | Waterway Limited Warranty |
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