This 21.5mm PVC Aquaflow Straight Coupling is a critical component for extending both internal and external overflow systems. Specifically designed to provide a reliable, inline connection in domestic and commercial plumbing, it is used to safely route excess water away from cisterns, cold water storage tanks, and boilers. Furthermore, you can easily install this straight coupling using solvent cement, creating a permanent, leak-free chemical weld without the need for specialist mechanical tools.
Ideally matched with the 21.5mm Aquaflow Overflow Pipe, this fitting allows you to effortlessly join two pipe lengths together for extended continuous runs. Additionally, its weather-resistant properties make it perfectly suited for handling tough outdoor applications without degrading. The coupling features a durable, lightweight PVC construction and incorporates a plain black design for a clean, unobtrusive finish that blends seamlessly into any installation environment.
Key Features & Benefits
-
Permanent Solvent Weld Joint: The design utilizes solvent cement to chemically fuse the fitting to compatible 21.5mm pipes. Consequently, you achieve a rock-solid, permanent, and completely leak-free joint that easily withstands continuous use and environmental pressure.
-
Reliable Inline Extension: This fitting provides a neat, secure way to link two pipes end-to-end in a perfectly straight line. It is ideal for long pipe runs and helps reduce waste by allowing you to easily connect and use up shorter pipe offcuts.
-
Weather Resistant: The tough black PVC material acts as a resilient barrier against the elements. In particular, it offers excellent UV protection and withstands exposure to outdoor conditions and fluctuating temperatures without fading or becoming brittle.
-
Lightweight & Easy Handling: Its lightweight profile allows for effortless dry-fitting and alignment, making it easy to position between pipe runs in tight lofts or awkward spaces before applying your solvent cement.
Technical Specifications
-
Product Type: Overflow Straight Coupling
-
Size: 21.5mm
-
Connection Type: Solvent Weld
-
Material: PVC
-
Color/Finish: Black / Plain
-
Properties: Permanent Seal, Durable, Lightweight, Weather Resistant












