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When your pipe run changes diameter mid-way through a project, a mismatched fitting can mean leaks, wasted time, and costly rework. Whether you are a homeowner tackling a bathroom renovation, a gardener extending an irrigation line, or a tradesperson completing a drainage layout, the right PVC plain reducing bush makes the transition clean, secure, and code-friendly.
These PVC plain reducing bushes are manufactured from rigid uPVC (unplasticised polyvinyl chloride) and feature a plain socket-to-socket design that accepts solvent-weld cement for a permanent, watertight bond. Available in three colour options — White, Blue, and Gray — to match your existing pipework or colour-code your system. The size range spans from 20×16 mm (approximately ¾" × ⅝") up to 90×75 mm (approximately 3½" × 3"), covering the most common domestic and light-commercial pipe diameters.
Typical applications include cold-water supply line reductions, PVC irrigation manifold step-downs, rainwater downpipe diameter changes, and waste-pipe branch connections. Long-tail use cases such as "PVC reducing bush for irrigation pipe", "solvent weld reducing socket fitting", and "uPVC pipe reducer for drainage" are all served by this versatile fitting.
| Material | Rigid uPVC (Unplasticised Polyvinyl Chloride) |
|---|---|
| Connection Type | Plain socket, solvent-weld (cement-weld) both ends |
| Available Colors | White, Blue, Gray |
| Size Range (OD × OD) | 20×16 mm up to 90×75 mm (see variant options) |
| Inch Equivalents | Approx. ¾"×⅝" up to 3½"×3" (see variant options) |
| Wall Thickness | See variant options |
| Working Pressure | See variant options / Contact us to confirm |
| Temperature Range | 0 °C to 60 °C (32 °F to 140 °F) typical for uPVC |
| Standard Compatibility | Schedule 40 / Class D uPVC pipe systems |
| Surface Finish | Smooth bore, colour-matched exterior |
| Quantity per Order | 1 piece (per variant selected) |
Measure the outer diameter (OD) of both pipes you need to join. The first number in the size designation (e.g., 50 in "50×32 mm") is the larger socket end; the second number (32 mm) is the smaller socket end. Match these to your pipe ODs. If you are unsure, check the pipe markings or use a caliper.
These fittings are manufactured from rigid uPVC, which is rated for cold-water and ambient-temperature applications (typically up to 60 °C / 140 °F). They are not recommended for continuous hot-water supply lines above that threshold. For hot-water systems, consider CPVC or PP-R fittings instead.
Use a standard uPVC solvent-weld cement (also called PVC pipe cement or PVC glue) compatible with Schedule 40 / Class D pipe. Apply primer first if required by your local plumbing code, then apply cement to both the pipe end and the socket, push together with a slight twist, and hold for 30 seconds. Allow full cure time before pressurising the system.
uPVC is inherently resistant to corrosion, rust, and most common chemicals found in soil and water. It is suitable for sheltered outdoor installations and buried applications. For prolonged direct UV exposure, consider wrapping or painting the fitting, as extended sunlight can cause surface discolouration over time.
No — all three colour variants are made from the same uPVC compound and carry identical dimensional and performance characteristics. The colour difference is purely cosmetic, allowing you to match existing pipework or use colour-coding to distinguish between different circuits (e.g., cold water, irrigation, drainage).
The fittings are dimensioned in metric (mm) and are designed for metric uPVC pipe systems. The inch equivalents listed are approximate conversions for reference. If your existing pipework is imperial-sized, please verify the actual OD measurement before ordering, as nominal imperial and metric sizes may not be directly interchangeable.
Yes. These PVC plain reducing bushes are well-suited for irrigation manifold step-downs, drip-line connections, and rainwater downpipe diameter changes. They are compatible with standard uPVC irrigation and drainage pipe of matching OD. Ensure the working pressure of your system does not exceed the fitting's rated capacity.
