Davant 21.5mm Solvent Overflow Straight Coupler

The Davant 21.5mm Solvent Overflow Straight Coupler is a simple but essential fitting for extending or repairing overflow pipe runs. Designed to join two lengths of 21.5mm overflow pipe, this straight coupler is ideal for use in cold water storage systems, cisterns, and other plumbing applications where excess water needs to be safely directed away. Available in both black and white, the coupler blends seamlessly with your existing pipework, offering both functionality and a neat finish. Whether you're extending a pipe run or replacing a damaged section, this coupling ensures a secure, reliable connection between two straight pipe ends. The fitting is designed for use with solvent weld systems, meaning it creates a permanent and watertight bond when used with solvent cement. Once the cement is applied and the pipes are joined, the connection becomes durable and long-lasting—perfect for systems that don’t require regular disassembly. Whether you’re a plumber, installer, or competent DIYer, this straight coupler is an essential part of any overflow system toolkit, helping maintain safety and prevent water damage from overflows.

Frequently Asked Questions

What type of pipe does this coupler connect?

This coupler is designed to connect two lengths of 21.5mm solvent weld overflow pipe, typically used in cold water tanks, cisterns, and waste systems.

Does this coupler require any tools or equipment to install?

No tools are needed beyond solvent cement. Simply apply the cement to both the inside of the coupler and the outside of the pipe ends, push them together, and allow time for the bond to set.

Can it be used outdoors?

Yes, it can be used in sheltered outdoor installations. The black version is particularly well-suited for outdoor use due to better UV resistance, though it should still be protected from prolonged exposure where possible.

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Roof Tiles & Fittings:

We recommend ordering an additional 10% of roof tiles to allow for any breakages that may occur during delivery or handling. Roof tiles are naturally fragile, and having a few extra on site helps prevent delays and ensures your roofing project can be completed without interruption.