BSP Thread Fittings x Barb Hose Tail End Connector Splitter For Air Fuel Water

The barb OD should match the inner diameter (ID) of your hose. For example, if your hose has a 10 mm ID, select the 10 mm barb size. A barb that is slightly larger than the hose ID creates a tighter grip; a barb that is smaller will not seal reliably. Always check your hose ID with a caliper before ordering.

BSP (British Standard Pipe) threads have a 55° thread angle and are used widely in the UK, Europe, Australia, and Asia. NPT (National Pipe Taper) threads have a 60° thread angle and are the North American standard. The two are not interchangeable — using a BSP fitting in an NPT port (or vice versa) will result in cross-threading or leaks. Check your port specification before selecting a fitting.

Stainless steel is the better choice for outdoor, marine, or corrosive environments where moisture or chemicals may be present. Brass is well-suited to indoor plumbing, compressed air, and low-pressure water service — it is easier to machine and typically more cost-effective for standard applications. Both materials are available across the main size range in this listing.

For low-pressure applications (typically below 30 PSI), a push-on barb connection without a clamp can hold adequately when the hose ID closely matches the barb OD. For higher-pressure air, fuel, or hydraulic lines, a worm-drive or crimp clamp is strongly recommended to prevent the hose from blowing off under pressure spikes.

Select the Male Thread Elbow or Female Thread Elbow type depending on whether your port has an internal (female) or external (male) BSP thread. The elbow body routes the hose at approximately 90° from the port axis, which is useful in tight engine bays or panel-mounted applications where a straight fitting would not clear surrounding components.

Both stainless steel and brass are generally compatible with petrol (gasoline) and diesel at low to moderate pressures. However, compatibility depends on the specific fuel formulation, temperature, and pressure in your application. For ethanol-blended fuels or aggressive chemicals, verify material compatibility with a chemical resistance chart before use. These fittings are not rated for high-pressure fuel injection systems.

A T-piece splits one inlet into two outlets at 90° (forming a T shape), making it ideal for branching a single line into two parallel runs. A Y-piece splits at an angled fork (typically around 45°–60°), which reduces turbulence and is preferred for fluid flow applications. An X-piece provides four ports in a cross configuration, allowing one inlet to feed three outlets or enabling two lines to cross-connect. Choose based on your routing geometry and flow requirements.