Brass Hose Joiner Straight Barb Splicer Connector Air Fuel Water Pipe Fittings

Measure the inner diameter (ID) of your hose, not the outer diameter. The barb size should match or be very slightly larger than the hose ID so the barb ridges grip the hose wall firmly. For example, a 10mm barb is designed for hose with a 10mm inner bore. If your hose ID falls between two sizes, size up and use a clamp to ensure a secure seal.

Brass is generally compatible with petrol (gasoline), diesel, and light oils. However, compatibility depends on the specific fuel formulation and any additives present. Always verify that both the fitting material and your hose material are rated for the fuel type in your application. For high-pressure fuel systems, consult the system's pressure rating before use.

For low-pressure gravity-fed water lines, a push-fit connection may hold adequately. For any pressurised application — including pneumatic air lines, fuel systems, or pressurised irrigation — a hose clamp is strongly recommended. The clamp compresses the hose wall against the barb ridges, significantly increasing pull-out resistance and reducing the risk of leaks under pressure.

Standard brass alloys may contain trace amounts of lead depending on the specific alloy grade. These fittings are not certified for potable (drinking) water use. For drinking water applications, use fittings that carry NSF/ANSI 61 or equivalent certification. These fittings are suitable for irrigation, garden water supply, and non-potable water transfer.

Working pressure depends on the barb size, hose wall thickness, clamp type, and media temperature. As a conservative guideline, brass barb fittings of this type are typically rated for up to 150 PSI (approximately 10 bar) in water service at ambient temperature when used with a properly tightened hose clamp. Reduce pressure ratings for elevated temperatures or fuel service. Contact us to confirm if your application has specific pressure requirements.

No — this is a straight (equal) barb joiner, meaning both ends have the same barb diameter. It is designed to splice two hoses of the same inner diameter. If you need to connect hoses of different sizes, you would require a reducing barb connector with different diameters on each end. Contact us if you need a reducing fitting for your application.

1. Cut both hose ends cleanly and squarely. 2. If the hose is stiff, briefly warm the end in hot water to soften it. 3. Push the hose firmly onto the barb until it seats past all ridges. 4. Position a hose clamp over the hose, centred over the barb section. 5. Tighten the clamp until snug — avoid overtightening, which can cut into the hose wall. 6. Repeat on the other end. Test for leaks before returning the line to service.