Wavin OsmaSoil D/S tight radius bend 87.5° 110mm black - 4S561B

D/S typically refers to 'Double Socket', meaning the fitting has sockets on both ends designed to receive pipes.

Captive seal technology ensures that the rubber seal within the fitting cannot become dislodged during the installation process, leading to a more secure and reliable joint.

Yes, the Wavin OsmaSoil range, including this bend, is suitable for both underground and above-ground soil and vent applications, provided it is installed correctly.

While it is a standard 110mm size, for guaranteed performance and to maintain warranties, it is recommended to use this fitting with other Wavin OsmaSoil 110mm system components.

The Kitemark certification indicates that the product has been independently tested and certified to meet the rigorous quality and safety standards set out in the relevant British and European standard for plastic piping systems for soil and waste.

An 87.5° bend offers a very tight turning radius, allowing for significant changes in direction within a minimal horizontal or vertical space compared to standard 90° bends.

Ensure the pipe is fully inserted into the socket and that the captive seal is correctly seated. Check for debris in the socket or on the pipe spigot. Re-lubricate and re-insert if necessary.

Confirm that you are using the correct diameter pipe (110mm) and that it is compatible with the Wavin Osma system. Ensure the pipe end is cut squarely and free from burrs. Apply more lubricant if needed.

While the captive seal is designed to prevent dislodgement, if damage is suspected, do not proceed with installation. Replace the fitting to ensure a secure and watertight connection.