The Wavin Osma OsmaW PP Tee 90° BK 40x40mm (Part No. 5W190B) is a robust black polypropylene push‑fit tee waste fitting designed for above‑ground drainage and plumbing systems. Built for quick, reliable installation, this 90° waste tee connects 40 mm pipework easily and efficiently, making it ideal for domestic and commercial drainage applications. Manufactured by Wavin, a trusted name in plumbing components, this tee delivers a dependable joint and smooth wastewater flow wherever a branch connection is needed.