Grey PVC Reducer Socket Fittings — Reliable Solvent-Weld Transitions for Every Pipe Diameter
When a pipe run changes diameter and a leaking joint is not an option, plumbers and DIY installers need a reducer fitting they can trust. These grey PVC reducer socket fittings (Klebefittings) are designed for solvent-weld (glue) assembly, giving a permanent, pressure-rated bond that holds in drainage, irrigation, and cold-water supply lines alike.
Each fitting is moulded from rigid grey PVC and features two solvent-weld sockets — a larger inlet and a smaller outlet — spanning a range from 25×20 mm (approx. 1" × ¾") up to 160×125 mm (approx. 6¼" × 5"). Wall thickness and socket depth scale with pipe diameter to maintain structural integrity across the full size range. Sold individually or in packs of 2, 3, 5, or 10 pieces.
Typical applications include reducing a 63 mm main to a 32 mm branch in a garden irrigation system, stepping down a 110 mm soil stack to a 90 mm lateral in a drainage installation, and connecting mismatched pipe diameters in grey-water or rainwater harvesting setups — all scenarios where a solvent-weld PVC reducer socket is the standard, code-compliant solution.
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Compatible with standard metric PVC pressure and drainage pipe (DIN 8061 / EN 1452 series). Solvent-weld assembly only — not suitable for push-fit or threaded connections. Verify pipe OD before ordering.
✅ Key Features of These Grey PVC Reducer Socket Fittings
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31 Size Combinations
From 25×20 mm to 160×125 mm — covers the most common metric pipe diameter reductions in a single product line.
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Solvent-Weld Socket Design
Both ends accept standard PVC solvent cement for a chemically fused, leak-free joint that meets typical drainage and cold-water pressure requirements.
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Rigid Grey PVC Construction
Moulded from unplasticised PVC (uPVC) — dimensionally stable, resistant to common household chemicals, and unaffected by soil contact in buried drainage runs.
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Flexible Pack Quantities
Order 1, 2, 3, 5, or 10 pieces per size — buy exactly what the job requires without overstocking.
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Consistent Wall Thickness
Socket depth and wall thickness are proportional to pipe diameter, ensuring adequate glue surface area and mechanical strength at every size.
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Broad Application Range
Suitable for cold-water supply, gravity drainage, rainwater harvesting, and garden irrigation — wherever a permanent metric PVC pipe reduction is needed.
📐 Technical Specifications — PVC Reducer Socket Fittings
| Material |
Rigid grey PVC (uPVC) |
| Connection Type |
Solvent-weld (glue) socket × 2 |
| Size Range (Inlet × Outlet) |
25×20 mm to 160×125 mm (see variant options) |
| Colour |
Grey |
| Compatible Pipe Standard |
Metric PVC pipe (DIN 8061 / EN 1452 series) |
| Suitable Media |
Cold water, drainage, irrigation (non-potable and potable cold water) |
| Wall Thickness |
See variant options |
| Pack Quantity |
1 / 2 / 3 / 5 / 10 pieces (see variant options) |
| Weight (per piece) |
See variant options |
❓ Frequently Asked Questions
How do I choose the correct reducer size?
Measure the outer diameter (OD) of both pipes you need to join. The first number in the size designation (e.g. 63 in "63×32 mm") is the larger inlet OD; the second is the smaller outlet OD. Match these to your pipe ODs — do not use the nominal bore or thread size, as metric PVC pipe is sized by OD.
Can these fittings handle pressure, or are they drainage-only?
Rigid uPVC solvent-weld fittings of this type are used in both pressure (cold-water supply, typically rated to 10–16 bar at 20 °C depending on wall class) and gravity drainage applications. Confirm the pressure rating of the specific pipe class you are using, as the fitting must match the pipe's SDR/PN rating.
Are these fittings corrosion-resistant for buried or outdoor use?
Yes. uPVC is inherently resistant to corrosion, rust, and most soil chemicals. It is widely used in buried drainage and irrigation systems. For above-ground outdoor installations exposed to prolonged UV, consider whether UV-stabilised pipe and fittings are specified — standard grey uPVC has moderate UV resistance but may become brittle over many years of direct sunlight exposure.
What solvent cement should I use?
Use a PVC solvent cement (also called PVC glue or solvent weld adhesive) formulated for rigid uPVC pipe and fittings. For drainage applications a standard one-step cement is typical; for pressure pipe a primer followed by a medium- or heavy-bodied cement is often specified. Always follow the cement manufacturer's cure time before pressurising the joint.
Are these compatible with push-fit or rubber-ring pipe systems?
No. These are solvent-weld (glue) fittings only. They do not have rubber seals or push-fit mechanisms. If your existing pipework uses push-fit or ring-seal joints, you will need an appropriate adaptor to transition to solvent-weld before using these reducers.
Can I use these for hot water or chemical drainage?
Standard grey uPVC is rated for cold water only (typically up to 60 °C intermittently, but continuous service is generally limited to 20–40 °C depending on pressure). For hot water drainage (e.g. from dishwashers or washing machines) use HTPVC or ABS fittings instead. For chemical drainage, verify chemical compatibility with the specific media before installation.
How many pieces do I need to order for a typical repair or installation?
For a single pipe reduction point, order 1 piece. For a multi-branch irrigation manifold or a drainage run with several step-downs, packs of 5 or 10 offer a per-unit saving and ensure you have spares on hand. Select the quantity variant that matches your project scope before adding to cart.
🛒 Select your size and quantity above, then add to cart.
