Plastic Barbed Hose Connectors — Elbow, T-Tee, Y-Tee & Cross Fittings for Aquarium & Washer Lines

Match the barb diameter to your hose's inner diameter (ID). For example, a 6mm (≈1/4") barb fits a hose with a 6mm ID. When in doubt, measure the inside of your hose with calipers. A slightly snug fit is generally better than a loose one for leak-free connections. If your hose ID is between sizes, size down for a tighter grip.

Sizes range from 1.6mm up to 20mm. For elbows and equal tees, both ports are the same size (e.g., "6mm–6mm" means both ends are 6mm). For reducing tees, the notation shows each port diameter (e.g., "8mm–4mm–8mm" means the two outer ports are 8mm and the branch port is 4mm). Select your type and size from the variant dropdowns above.

These connectors are made from rigid plastic — typically polypropylene or a similar engineering-grade polymer. This makes them lightweight, corrosion-resistant, and suitable for continuous water contact in aquarium air line splitter and irrigation branching applications.

Yes, generally. The plastic construction resists moisture and mild weather exposure. Prolonged direct UV exposure or extreme temperature swings may affect performance over time. For outdoor drip irrigation or aquarium use, these fittings are typically well-suited. For harsh outdoor environments, consider UV-stabilized alternatives.

These are designed for low-pressure applications — such as aquarium tubing, windscreen washer fluid lines, and drip irrigation systems. They are not rated for high-pressure plumbing or compressed air systems. Contact us to confirm suitability for your specific pressure requirements.

For most low-pressure applications, the barbed design provides a secure friction fit without clamps. For higher-flow setups, vibration-prone environments, or anywhere a leak would cause damage, small hose clamps are generally recommended for added security and peace of mind.

A T-tee (3-Way T) splits flow at a 90° angle from the main line, which is compact and common for most hose splitter applications. A Y-tee splits flow at a shallower angle (typically around 45°), which generally causes less turbulence and is preferred when smooth, even flow distribution matters — such as in aquarium water line routing.

This listing covers five connector types: 90° Elbow (for direction changes), 3-Way T Equal Tee (same-size branch), 3-Way T Reducing Tee (stepped branch), 3-Way Y Tee (angled branch), and 4-Way Cross / Equal Barb Cross (four-port junction). Select your type and size from the variant options above.