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When a leaking joint costs you hours of rework, the fitting you choose matters. Whether you are a plumber running domestic water lines, a landscaper laying irrigation mains, or a workshop builder routing chemical drainage, you need a coupler that bonds permanently and holds pressure without creep. These PVC-U solvent weld socket couplers are designed for exactly that — a clean, solvent-cemented joint that becomes as strong as the pipe itself.
Each coupler is manufactured from rigid unplasticised PVC-U (uPVC), offering a smooth internal bore and a precisely machined socket depth for full solvent contact. Available in three colour options — White, Blue, and Grey — and eleven sizes ranging from 16mm to 125mm (approximately 0.63 in to 4.92 in), they cover the full span of standard metric pipe schedules. Sold individually (1 pc), in twin packs (2 pcs), or in economy packs of five (5 pcs) to suit both single repairs and bulk installations.
Typical applications include cold potable water distribution lines, garden drip and sprinkler irrigation systems, chemical-resistant drainage runs in workshops and laboratories, and pool or spa pipework where a solvent-bonded uPVC coupler for 50mm irrigation pipe or a 110mm uPVC drainage socket coupler is required.
| Material | Rigid PVC-U (Unplasticised Polyvinyl Chloride) |
|---|---|
| Fitting Type | Straight Socket Coupler (Sleeve / Muffe) |
| Connection Method | Solvent Cement Weld (Kleben) |
| Available Sizes | 16 / 20 / 25 / 32 / 40 / 50 / 63 / 75 / 90 / 110 / 125 mm |
| Colour Options | White (Weiß) / Blue (Blau) / Grey (Grau) |
| Pack Quantities | 1 pc / 2 pcs / 5 pcs |
| Pressure Rating | See variant options |
| Wall Thickness | See variant options |
| Socket Depth | See variant options |
| Temperature Range | Typically 0°C to 60°C (32°F to 140°F) for cold water service |
| Standard Reference | DIN 8061 / ISO 1452 (confirm with pipe supplier) |
| UV Resistance | Contact us to confirm |
Measure the outer diameter (OD) of your pipe in millimetres. PVC-U metric pipe is sized by OD, so a 50mm pipe requires a 50mm socket coupler. Do not measure the inner bore — the socket is machined to accept the pipe's outer surface. If you are unsure, check the pipe's printed markings or use a vernier calliper.
PVC-U is widely used in potable water distribution. The Blue colour variant is conventionally used to identify potable water lines in many regions. However, compliance with local drinking water regulations depends on the specific compound and certification of the fitting. Please contact us to confirm certification status for your jurisdiction before use in potable water applications.
Use a PVC-U solvent cement (also called PVC glue or Klebstoff für PVC-U) compatible with your pipe's pressure class. Apply primer if required by the cement manufacturer. Initial set typically occurs within 5–15 minutes at room temperature; full cure for pressure testing is usually 24 hours. Always follow the cement manufacturer's instructions for temperature and humidity conditions.
No. Rigid PVC-U is rated for cold water service, typically up to 60°C (140°F) at reduced pressure. It is not suitable for hot water heating systems, steam lines, or applications where sustained temperatures exceed this range. For hot water, consider CPVC or PP-R fittings instead.
The colour difference is primarily for system identification. White is common in visible domestic plumbing and general use. Blue is the conventional colour for potable (drinking) water pipework in many European standards. Grey is typically used for drainage, waste, and industrial pipework. The mechanical and chemical properties of the PVC-U compound are comparable across colours; select the colour that matches your system's identification convention or local code requirement.
No. These are solvent weld (glued) socket couplers and are not compatible with push-fit or compression fitting systems. The socket is sized for a solvent-cemented interference fit with the pipe OD. Mixing connection methods on the same joint will result in leaks.
The 5-pack option reduces the per-unit cost and ensures you have spares on hand for a project run, reducing the risk of work stoppages if a fitting is damaged during installation. For single repairs or testing a size before bulk purchase, the 1-pc option is the practical choice. The 2-pc pack suits paired connections such as both ends of a short spool piece.
