Stainless Steel BSP 1 8"-3 8" Male Thread Fitting x Barb Hose Tail End Connector

Match the thread size (1/8", 1/4", or 3/8") to the female BSP port on your pump, valve, or manifold. If unsure, use a thread gauge or measure the port's outer diameter: 1/8" BSP ports are approximately 9.7 mm OD, 1/4" BSP approximately 13.2 mm OD, and 3/8" BSP approximately 16.7 mm OD.

Select a barb diameter that matches the internal bore of your hose. For example, if your hose has a 10 mm internal diameter, choose the 10 mm barb variant. A correctly sized barb should require light force to push the hose on and should not slip off without a clamp.

These fittings use BSP (British Standard Pipe) threads, which are common in the UK, Australia, and many parts of Asia and Europe. NPT (National Pipe Thread) is the North American standard and is not interchangeable with BSP. Check your equipment's thread standard before ordering.

For low-pressure applications (such as gravity-fed water or light irrigation), the barb ribs alone may provide sufficient retention. For pressurized systems — including compressed air, fuel lines, or any circuit above approximately 30 psi — a stainless steel hose clamp over the hose end is strongly recommended to prevent blow-off.

Stainless steel is compatible with fresh water, mild salt water, petroleum-based fuels, lubricating oils, and compressed air. It is not recommended for strong acids, chlorinated solvents, or highly alkaline fluids without verifying chemical compatibility for your specific grade of stainless steel.

Apply PTFE (Teflon) tape or an appropriate thread sealant paste to the male BSP threads before installation. Wrap PTFE tape clockwise (when viewed from the thread end) for 2–3 turns. Tighten with a wrench to the torque appropriate for the port material — avoid over-tightening in plastic or soft-metal ports.

Yes, stainless steel BSP barb fittings are commonly used in compressed-air circuits. Ensure the hose you connect is rated for the working pressure of your system, and use a hose clamp to secure the barb connection. Always verify the pressure rating of all components in the circuit before pressurizing.