Match the barb OD to your hose's inner diameter (ID). For example, a 15mm (≈19/32") barb generally fits a hose with a 15mm ID. Always measure your hose ID before ordering. If you're between sizes, size down for a tighter, leak-resistant grip. A hose clamp over the barb is strongly recommended for pressurized applications.

These fittings use BSP Taper (BSPT) threads — a tapered thread standard widely used in plumbing, hydraulic, and pneumatic systems. BSPT is not directly compatible with NPT (National Pipe Taper) threads due to differences in thread angle and pitch. If your equipment uses NPT ports, you'll need a BSP-to-NPT adapter. When in doubt, check your equipment's port markings or manual.

304 stainless steel offers good corrosion resistance for most outdoor, humid, and water-contact applications. It performs reliably in garden irrigation, workshop plumbing, and light industrial fluid systems. For highly corrosive environments — such as saltwater exposure or strong chemical contact — 316 stainless steel is generally recommended. For typical DIY and workshop use, 304 SS is a solid, long-lasting choice.

Pressure capacity varies by barb size and installation method. 304 stainless steel hose barb fittings typically handle moderate working pressures suitable for water supply lines, compressed air hose connections, and light fluid transfer. For high-pressure hydraulic or industrial applications, please contact us to confirm suitability before ordering.

BSPT threads are designed to seal on the taper itself, but applying PTFE tape or a thread sealant compound is generally recommended — especially in pressurized fluid or air systems. Wrap PTFE tape clockwise (when facing the thread end) for 2–3 turns before assembly. This helps ensure a leak-free connection and makes future disassembly easier.

The BSP taper end threads into ports on pumps, tanks, valves, or manifolds. The barb end is designed for flexible hose — push the hose over the barb and secure with a hose clamp for a reliable, pull-resistant connection. These fittings are not intended for rigid pipe-to-pipe connections on the barb side. For rigid pipe connections, a different fitting type would be needed.

304 stainless steel is generally compatible with water, air, mild oils, and many non-corrosive fluids. It is not recommended for strong acids, chloride-rich solutions (e.g., seawater), or highly alkaline chemicals. Always verify chemical compatibility for your specific application before use in chemical transfer systems.