BSP Taper Thread Hose Tail Connector — 1/2" & 3/4" Female/Male Fuel Line Fitting

Measure your hose inner diameter and match it to the nipple size — for example, an 8mm nipple is typically used with an 8mm ID hose. For the threaded end, confirm whether your port is 1/2" BSP or 3/4" BSP by measuring the thread outer diameter or checking your equipment's service manual. When in doubt, a thread gauge is the most reliable way to confirm BSP thread size.

BSP taper (BSPT) threads narrow as they go deeper, creating a metal-to-metal seal as the fitting is tightened. BSP parallel (BSPP) threads maintain a consistent diameter and generally require an O-ring or bonded seal to prevent leaks. These connectors use BSP taper threads and are not directly interchangeable with parallel thread ports.

Yes. The brass construction is generally compatible with petrol, diesel, hydraulic oil, and water. Always verify chemical compatibility with your specific fluid — particularly for aggressive solvents or specialty fluids — before installation in a pressurized system.

Brass offers good corrosion resistance and is typically suitable for outdoor use and high-humidity environments. For saltwater or highly corrosive environments, stainless steel fittings are generally a better choice for long-term durability.

A worm-drive hose clamp sized to your hose's outer diameter is typically recommended. Position the clamp over the barbed section of the nipple and tighten firmly — but avoid overtightening, which can damage softer hose materials. For fuel lines, a stainless steel clamp is generally preferred for corrosion resistance.

Pressure ratings for brass BSP hose tail connectors in this size range are typically suited for low-to-medium pressure fluid transfer applications. The actual rating depends on the specific size, hose type, and fluid. Please contact us to confirm the pressure rating for your specific use case before installing in a high-pressure system.

BSP taper threads are designed to form a seal as they are tightened. However, applying 2–3 wraps of PTFE tape is generally recommended — especially for fuel and oil lines — to ensure a leak-free seal and to make future disassembly easier without galling the threads.

No. BSP (British Standard Pipe) and NPT (National Pipe Taper) threads have different thread angles and pitches and are not interchangeable. Using a BSP fitting in an NPT port (or vice versa) can result in cross-threading, leaks, or fitting damage. If your equipment uses NPT threads, please contact us before ordering.