The UPD 110 x 40mm Underground Waste 40mm Adaptor SPUTWA40 is a specialized drainage fitting designed to connect 40mm waste pipes into larger 110mm underground drainage systems. Manufactured from high-strength, durable PVC-u, this adaptor is engineered to withstand heavy soil loads, ground movement, and chemical exposure typical of sub-surface installations.
 
Featuring a secure, precision-molded reducing profile, the component provides a watertight and reliable transition between different pipe diameters, preventing leaks and blockages within the drainage network. Its robust construction ensures long-term structural integrity and resistance to root intrusion and soil corrosion.
 
Essential for plumbing contractors and civil drainage projects requiring seamless transitions between internal waste networks and external underground pipework, this adaptor ensures compliant and efficient wastewater management. Whether you are installing a new extension, connecting bathroom or kitchen waste lines to a main drain, or upgrading a property's drainage system, this component delivers professional-grade reliability and performance.