Plastic Barbed Hose Connector — Straight, L-Type & T-Type | Aquarium, Pond & Washer Tubing

Match the barb diameter to your tubing's inner diameter (ID). For example, a 6mm barb fits tubing with a 6mm ID — that's approximately 1/4". A 10mm barb fits 10mm ID tubing, approximately 3/8". When in doubt, size down slightly: a snug barb creates a better seal than a loose one. If you're working with imperial tubing, use this as a general guide: 4mm ≈ 5/32", 6mm ≈ 1/4", 8mm ≈ 5/16", 10mm ≈ 3/8", 12mm ≈ 1/2".

These connectors are generally suitable for low-to-medium pressure applications such as aquarium air circulation, pond water features, and windscreen washer systems. For higher-pressure lines, adding a small hose clamp over the tubing at the barb is typically recommended to ensure a secure, leak-free hold.

Yes. The plastic material is generally resistant to moisture and mild UV exposure, making it suitable for outdoor pond and garden water feature applications. For prolonged direct sunlight exposure, shielding the connector or using UV-resistant tubing over the joint is advisable to extend service life.

These barbed connectors are compatible with standard flexible tubing — PVC, silicone, and polyurethane — that matches the listed barb diameter. They are not threaded fittings; connection is made by pushing flexible tubing over the barb. Always verify your tubing's inner diameter before ordering. They are not designed for rigid pipe (CPVC, copper, etc.).

Straight: Use for inline connections where two tubes run in the same direction — joining two lengths of tubing end-to-end.
L-Type (elbow): Use when you need a 90° turn to route tubing around corners, tank edges, or obstacles without kinking the hose.
T-Type: Use when you need to split one line into two, or merge two lines into one — common in aquarium air manifolds, pond distribution headers, and irrigation setups.

Yes. The smaller sizes — typically 4mm and 6mm — are well-suited for standard aquarium air tubing. The barbed design creates a friction-fit seal that holds air lines securely without adhesive. For water lines, the same principle applies: match the barb to your tubing's inner diameter. The T-Type is especially popular for splitting a single air pump output to multiple tanks or diffusers.

No tools are required for basic installation. Simply push the flexible tubing firmly over the barb until it seats past the ridge. For a more secure seal in pressurized applications, a small hose clamp can be added over the tubing at the barb — no special tools needed for that either. Warming the tubing end slightly in warm water can make it easier to push over larger barb sizes.