Reducing Tee Connectors PVC Plastic Pipe Fittings Connector I.D. 20mm-200mm Grey

The "big ID" is the inner diameter of your main run pipe and the "small ID" is the inner diameter of the branch pipe you want to connect. Measure the outside diameter of each pipe and cross-reference with a metric uPVC pipe schedule table to confirm the matching socket size. If in doubt, contact us before ordering — an incorrect socket size will not bond correctly with solvent cement.

No — these sockets are sized for metric uPVC pipe conforming to BS EN ISO 1452 / DIN 8061 outside diameters. Imperial pipe (e.g. ½" BSP or ¾" NPT) and CPVC pipe have different OD dimensions and will not seat correctly in a metric socket. Adapter bushes would be required; contact us to confirm suitability for your specific pipe.

Yes. When prepared with a compatible PVC primer and solvent cement and allowed to cure fully (typically 24 hours at ambient temperature before pressurising), a solvent weld joint chemically fuses the pipe and socket into a single piece. The joint typically exceeds the burst strength of the pipe wall itself and is suitable for continuous pressurised water service within the rated pressure of the pipe.

Rigid uPVC has good resistance to chlorine at typical water treatment concentrations, common algaecides, and most pond additives used in koi and ornamental fish keeping. It is not recommended for concentrated acids, ketones, or aromatic solvents. For aggressive chemical dosing applications, contact us to confirm suitability before ordering.

A reducing tee combines both functions into a single moulded fitting, which means fewer joints in the system, a shorter overall assembly length, and fewer potential leak points. It also simplifies installation in tight spaces where fitting a standard tee and a separate reducer socket would be awkward or impossible.

Grey uPVC has reasonable UV resistance for short-term outdoor exposure, but for long-term above-ground installations in direct sunlight, wrapping or painting the pipe run is advisable to extend service life. For buried installations, uPVC is widely used in underground water supply and drainage applications and performs well in typical soil conditions.

Count the number of branch junctions in your design that require a reducing tee of the same size combination, then add one spare per five fittings as a contingency for any solvent weld rework. The multi-pack options (2–5 pieces) offer a straightforward way to order the exact quantity you need without splitting across multiple orders.