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When a plumbing run needs to branch in four directions at once, a poorly fitted connector means leaks, pressure loss, and rework. Whether you're a homeowner building a garden irrigation grid, a contractor laying out a water distribution network, or a maker prototyping a fluid-handling system, you need a cross coupling that holds pressure and seats cleanly every time.
These PVC 4-way equal cross couplings are made from Polyvinyl Chloride (PVC) and feature a uniform four-port equal-bore design. Available in inside diameter sizes ranging from 20mm (~¾ in) to 90mm (~3½ in), they are sized to slip-fit standard pressure pipe of the corresponding diameter. The blue color coding aids quick identification in multi-pipe installations.
Typical use cases include residential and commercial garden drip irrigation systems, above-ground water distribution manifolds, DIY aquaponics and hydroponics plumbing, and workshop fluid-routing projects requiring a 4-way branch point.
| Material | Polyvinyl Chloride (PVC) |
|---|---|
| Color | Blue |
| Connection Type | 4-Way Equal Cross (slip-fit socket) |
| Inside Diameter (ID) | 20 / 25 / 32 / 40 / 50 / 63 / 75 / 90 mm |
| Wall Thickness | See variant options |
| Pressure Rating | See variant options |
| Packing Quantity | 1 / 3 / 5 / 10 Pcs (select above) |
| Application | Irrigation, water distribution, plumbing, DIY fluid systems |
Select the size that matches the inside diameter (ID) of your existing pipe. Common residential irrigation pipe runs 20mm–32mm; larger distribution mains typically use 40mm–90mm. If you're unsure, measure the pipe's outer diameter and subtract twice the wall thickness to get the ID, or check the pipe's printed markings.
Yes. These couplings are designed for pressure pipe applications such as irrigation mains and water distribution headers. For your specific working pressure, verify the fitting's rated pressure against your system's operating pressure before installation. PVC fittings generally perform well in low-to-medium pressure water systems.
PVC is inherently resistant to rust and corrosion, making it well-suited for outdoor irrigation and water supply applications. It also resists scale buildup and is unaffected by most common water treatment chemicals such as chlorine at typical municipal concentrations.
These fittings are designed for standard PVC pressure pipe with matching inside diameters (20–90mm). Compatibility depends on the pipe's outside diameter and wall thickness. Always dry-fit before cementing to confirm the socket seats correctly. If you are working with metric DIN, AS/NZS, or other regional pipe standards, verify the OD matches before ordering.
For permanent, leak-free joints in pressurized systems, PVC solvent cement (PVC glue) is strongly recommended. Clean and dry both the pipe end and the fitting socket, apply primer if required by your local code, then apply cement and push the pipe firmly into the socket with a slight twist. Allow adequate cure time before pressurizing.
For a small garden drip system with a few branch points, the 1 or 3-piece pack is usually sufficient. For larger grid-style irrigation layouts or workshop plumbing runs with multiple 4-way junctions, the 5 or 10-piece pack offers better value per fitting. Count your planned cross-junction points before ordering to avoid multiple shipments.
PVC fittings are primarily rated for water and certain non-aggressive fluids. They are not recommended for compressed air systems, flammable liquids, or highly concentrated chemical solutions. For non-water applications, confirm PVC's chemical compatibility with the specific fluid before use.
