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When a plumbing run needs to branch in four directions at once, a poorly matched fitting becomes a leak waiting to happen. Whether you are a DIY homeowner tackling a garden irrigation upgrade or a tradesperson routing water supply lines through a utility room, these PVC UPVC 4-way cross connector joints give you a secure, pressure-rated junction without the guesswork of mismatched adapters.
Each fitting is manufactured from rigid PVC/UPVC material, offering a smooth bore interior that minimises flow restriction. Available inner diameters span 20 mm (approx. 0.79 in) through 110 mm (approx. 4.33 in), with select rectangular-bore options such as 50×32 mm, 90×50 mm, 90×63 mm, 110×50 mm, and 110×63 mm for specialised duct or channel applications. Wall thickness and outer dimensions vary by size — see variant options for exact measurements.
Typical use cases include residential cold-water supply branching, underground irrigation manifolds where a single line must feed multiple zones, and light-duty drainage cross-junctions in workshops or outbuildings. The cross (4-way) geometry makes these fittings a go-to solution for PVC pipe cross connector plumbing projects, UPVC water pipe junction fittings, and DIY irrigation 4-way adapter installations.
| Product Type | 4-Way Cross Pipe Fitting (Adapter / Connector / Joint) |
|---|---|
| Material | PVC / UPVC (Rigid) |
| Inner Diameter (ID) Options | 20 mm, 25 mm, 32 mm, 40 mm, 50 mm, 63 mm, 75 mm, 90 mm, 110 mm, 50×32 mm, 90×50 mm, 90×63 mm, 110×50 mm, 110×63 mm |
| Outer Diameter | See variant options |
| Wall Thickness | See variant options |
| Connection Type | Solvent-cement socket (slip fit) |
| Number of Ports | 4 (cross / + configuration) |
| Application | Cold-water supply, irrigation, light-duty drainage |
| Temperature Rating | Suitable for cold water (up to approx. 60 °C / 140 °F — see variant options for rated pressure) |
| Pressure Rating | See variant options |
| Colour / Finish | White (standard PVC/UPVC) |
| Available Quantities | 1, 2, 3, 4, or 5 pieces per order |
| Product Weight | See variant options |
Measure the outer diameter (OD) of your existing pipe with a calliper or tape measure. For standard PVC/UPVC pressure pipe, the fitting's inner diameter (ID) is sized to accept the pipe's OD with a snug slip fit. For example, a pipe with a 50 mm OD typically inserts into a 50 mm ID fitting socket. If you are unsure, bring a short pipe sample to compare before ordering.
No. PVC and UPVC materials are rated for cold-water and low-temperature applications only — typically up to around 60 °C (140 °F) at reduced pressure. For hot-water supply lines, you should use CPVC, copper, or other materials rated for elevated temperatures. Using these fittings on hot-water lines risks deformation and leaks.
Use a standard PVC solvent cement (also called PVC glue or solvent weld adhesive) that is compatible with rigid PVC/UPVC pipe. Apply primer first if required by local plumbing codes, then apply cement to both the pipe end and the fitting socket, insert the pipe with a slight twist, and hold for 30 seconds. Allow the joint to cure fully before pressurising the system — typically 24 hours for full strength.
Yes. PVC/UPVC is resistant to soil moisture and most ground chemicals, making it a common choice for buried irrigation manifolds and water supply laterals. Ensure the solvent-cement joint is fully cured before backfilling, and avoid sharp rocks or debris in direct contact with the fitting that could cause point-load stress over time.
Round-bore options (e.g., 20 mm, 50 mm, 110 mm) are designed for standard circular cross-section PVC/UPVC pressure pipe used in water supply and irrigation. Rectangular-bore options (e.g., 50×32 mm, 90×63 mm, 110×50 mm) are intended for oval or rectangular-profile duct, channel, or downpipe applications where the bore is not perfectly circular. Select the option that matches your pipe's actual cross-section shape and dimensions.
The number of 4-way cross fittings you need depends on how many branch points your layout requires. A simple four-zone manifold fed from a single supply line typically needs one cross fitting per junction. For larger systems with multiple cross-points, ordering a 3- or 5-piece pack can reduce per-unit cost and ensure you have spares on hand. Sketch your pipe layout first and count the number of 4-way intersections to determine the exact quantity.
The inner diameters listed (20 mm, 25 mm, 32 mm, etc.) follow metric PVC/UPVC pipe standards common in most countries outside the United States. If you are working with imperial-sized pipe (e.g., ½", ¾", 1"), verify that the metric ID corresponds to your pipe's actual OD before ordering, as nominal imperial sizes do not always match metric equivalents directly. When in doubt, measure your pipe's OD with a calliper.
