304 Stainless Steel BSP Male Thread 90° Elbow Hose Barb Connector — 1/4" to 1-1/4"

Match the barb length to your hose inner diameter (ID). Generally, the barb OD should be equal to or slightly larger than the hose ID to create a snug, leak-resistant fit. For example, an 8mm barb typically suits hoses with an inner diameter of around 8mm (approx. 5/16"). When in doubt, size up slightly and secure with a hose clamp.

These connectors use BSP (British Standard Pipe) male threads, widely used in plumbing, pneumatic, and hydraulic systems. BSP threads are not directly compatible with NPT (National Pipe Thread) fittings — the thread angle and pitch differ. An NPT-to-BSP adapter is required if your port is NPT-threaded.

Yes. 304 stainless steel provides good corrosion resistance and is generally suitable for outdoor, wet, and mildly corrosive environments including garden irrigation and outdoor plumbing. For highly aggressive chemical exposure or marine/saltwater environments, 316 stainless steel is typically recommended instead.

Working pressure varies by size and application. 304 stainless steel hose barb fittings generally handle moderate pressure ranges suitable for irrigation and compressed air lines. For exact pressure ratings for your specific size and media, please contact us before use in high-pressure systems.

These fittings are generally suitable for water, air, and mild fluid transfer applications. Compatibility with specific chemicals or gases depends on the media and operating conditions. Contact us to confirm suitability if you plan to use them with anything other than water or compressed air.

For most plumbing, irrigation, or pneumatic applications, a hose clamp is strongly recommended to prevent leaks and ensure a secure connection. In very low-pressure situations a properly sized hose pushed firmly over the barb may hold without a clamp, but clamping is best practice for reliable long-term performance.

Divide the mm value by 25.4 to get the inch equivalent. Quick reference:

• 8mm = approx. 5/16"
• 10mm = approx. 3/8"
• 12mm = approx. 15/32"
• 16mm = approx. 5/8"
• 20mm = approx. 25/32"
• 25mm = approx. 1"
• 32mm = approx. 1-1/4"
• 40mm = approx. 1-9/16"

BSP thread size refers to nominal pipe size, not the actual thread OD. Measure the OD of the male thread with calipers and compare to a BSP thread chart. For example, a 1/2" BSP male thread typically measures approximately 20.9mm (approx. 0.825") OD. Contact us with your measurements if you need help confirming the right size.