Our collection features heavy-duty PVC-U Unions in both metric and imperial sizes. Designed with a central threaded nut and high-quality O-rings, these fittings provide a completely leak-proof seal while remaining easy to hand-tighten. Whether you are building a complex manifold or simply want an easy way to remove your pump for the winter, our unions offer the ultimate in plumbing flexibility.

Product Specifications

• Material: High-impact, UV-stabilised PVC-U with EPDM seals.
• Standard Sizes: 1.5", 2", 3", and 4" (110mm) diameters available.
• Design: Three-part construction with a removable central body.
• Connection: Solvent weld sockets for a permanent, high-strength bond.
• Compatibility: Suitable for all standard pond filtration and pressure circuits.

Integrating a PVC-U Union at key points in your system significantly simplifies future upgrades and repairs. For a filtration setup managing a pond with a surface area of 1m² or more, installing unions on the inlet and outlet of every piece of equipment is highly recommended for efficient maintenance. At Southcoast Koi and Aquatics, we supply the professional-grade fittings needed to create a manageable and reliable pond system.