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When a leaking joint ruins your fishbowl setup or your irrigation line fails mid-season, the culprit is almost always a poorly fitted connector. DIY builders, aquarium hobbyists, and small workshop operators need a straight coupling they can trust — one that seats firmly, seals completely, and holds up over time without corroding or cracking.
These PVC straight connector sleeves are made from rigid PVC (polyvinyl chloride), offering a smooth internal bore for unrestricted flow. Available in metric inner diameters from 16mm (~0.63 in) to 160mm (~6.30 in), with wall thickness typically in the 2–5mm range depending on size. Each connector is offered in White, Blue, or Grey to match your existing pipework or colour-code your system. Purchase in quantities of 1, 2, 5, or 10 pieces per order.
Typical use cases include freshwater and saltwater fishbowl or aquarium plumbing, garden drip irrigation and water distribution lines, and workshop fluid-transfer setups where a straight inline coupling is needed between two pipe sections of equal diameter.
Covers 16 mm through 160 mm inner diameter — one product line for small aquarium tubing up to large-bore irrigation mains.
White, Blue, and Grey finishes let you match existing pipework or colour-code different circuits for easy identification.
Uniform internal surface minimises turbulence and pressure drop, keeping flow rates consistent across your fishbowl or irrigation system.
Rigid PVC resists rust, scale, and common water-treatment chemicals — suitable for both freshwater aquariums and outdoor irrigation lines.
Order 1, 2, 5, or 10 pieces to match your project scope — no need to over-buy for a single repair or under-stock a full installation.
Standard PVC construction is compatible with PVC solvent cement for a permanent, leak-free bond on pressure-rated plumbing runs.
| Material | Rigid PVC (Polyvinyl Chloride) |
|---|---|
| Inner Diameter Range | 16 mm – 160 mm (0.63 in – 6.30 in) |
| Wall Thickness | See variant options |
| Outer Diameter | See variant options |
| Connector Type | Straight Sleeve / Coupling |
| Colour / Finish | White / Blue / Grey |
| Connection Method | Solvent weld (PVC cement) or push-fit |
| Application | Aquarium, fishbowl, irrigation, fluid transfer |
| Standard | Metric (DIN / ISO pipe sizing) |
| Pack Quantity | 1 pcs / 2 pcs / 5 pcs / 10 pcs |
| Operating Temperature | Typically 0 °C – 60 °C (32 °F – 140 °F) |
| Pressure Rating | See variant options |
Measure the outer diameter (OD) of your existing pipe. The connector's inner diameter (ID) should match or be very slightly larger than your pipe's OD to allow a snug fit. For example, a pipe with a 20 mm OD typically pairs with a 20 mm ID straight connector. When in doubt, measure twice before ordering.
Rigid PVC straight connectors are widely used in low-to-medium pressure plumbing applications. When bonded with PVC solvent cement, the joint typically exceeds the pipe's own pressure rating. For specific pressure requirements, refer to the variant options or contact us to confirm the rated working pressure for your chosen size.
PVC is inherently resistant to corrosion, rust, and most aquarium-safe chemicals including salt water, chlorine, and common water conditioners. It will not leach metals into your tank, making it a reliable choice for both freshwater and marine setups.
Yes. PVC is UV-tolerant for moderate outdoor exposure and handles typical garden water pressures well. For long-term outdoor installations in direct sunlight, consider wrapping or burying the connector to extend service life, as prolonged UV exposure can cause gradual surface discolouration over many years.
The colour difference is cosmetic — all three share the same PVC material and dimensional specifications. White is the most common for general plumbing, Blue is often used to colour-code cold-water or aquarium circuits, and Grey is popular for conduit-style or industrial-look installations. Choose the colour that best matches your existing pipework or system layout.
For a permanent bond, apply standard PVC solvent cement (primer + cement) to both the pipe end and the inside of the connector socket, then push together and hold for 30 seconds. No special power tools are required. For temporary or low-pressure connections, a push-fit assembly may suffice, but solvent welding is recommended for any pressurised or submerged application.
A basic single-tank recirculating system typically uses 4–8 straight connectors depending on the plumbing layout. The 5-piece or 10-piece pack options offer a per-unit saving and ensure you have spares on hand for future maintenance or expansion. For a multi-tank fish room, the 10-piece pack is the most cost-effective starting point.
