Brass Hose Barb Fitting 4–19mm x 1/2" BSP Female Thread Adapter

Q: What is a BSP thread and will this fitting work with my existing pipes?

BSP stands for British Standard Pipe, a widely adopted thread standard used in plumbing and irrigation systems across Australia, the UK, Asia, and many other regions. The 1/2" BSP female thread on this fitting is compatible with standard 1/2" BSP male-threaded valves, pipes, and connectors. If you're unsure, check your existing fittings with a thread gauge or compare the thread pitch to BSP specifications.

Q: How do I choose the right barb size for my hose?

Match the barb size to the inner diameter (ID) of your hose. For example, if your hose has a 12mm internal diameter, select the 12mm barb fitting. A correctly sized barb creates a snug, secure fit — too small and the hose may leak; too large and it may be difficult to connect or could damage the hose.

Q: Do I need hose clamps with this barb fitting?

For low-pressure applications such as garden drip irrigation, the barb design alone typically provides a reliable hold. For higher-flow or higher-pressure applications (closer to the 850 kPa maximum), using a hose clamp over the barb connection is recommended to ensure a leak-free seal and extra security.

Q: Is this fitting suitable for drinking water use?

The fitting is made from brass (copper alloy) with no high-concern chemicals listed. However, if you intend to use it in a potable (drinking) water system, please verify local regulations and standards for brass fittings in your region, as requirements may vary.

Brass Hose Barb Fitting – 4mm to 19mm x 1/2" BSP Female Thread

Connect hoses to threaded ports quickly and securely with this precision-machined brass hose barb fitting. Featuring a 1/2" BSP (British Standard Pipe) female thread on one end and a barb tail ranging from 4mm to 19mm on the other, this versatile copper connector is engineered for reliable, leak-resistant performance in water, air, and fluid transfer applications. Whether you're plumbing a garden irrigation system, workshop equipment, or household pipework, this fitting delivers durable, corrosion-resistant performance you can count on.

Made in Mainland China.

Key Features

Premium Brass/Copper Construction: Resists corrosion, oxidation, and wear for long-lasting service in wet and pressurised environments.
1/2" BSP Female Thread: Compatible with standard BSP-threaded pipes, valves, and fittings — widely used in plumbing and irrigation worldwide.
4mm–19mm Barb Range: Available in multiple barb sizes to suit a wide variety of hose inner diameters — choose the size that matches your hose.
Secure Barbed Connection: The serrated barb tail grips the hose firmly to prevent slipping and minimise leaks without the need for clamps (clamp use recommended for higher-flow applications).
Rated Up to 850 kPa: Handles moderate operating pressures suitable for household water systems, garden hoses, drip irrigation, and pneumatic lines.
CE Certified: Meets European conformity standards for safety and quality.
Nipple-Type Design: Compact and easy to install in tight spaces; no special tools required.

Specifications

Material	Brass (Copper Alloy)
Thread	1/2" BSP Female
Barb Tail Size	4mm – 19mm (select your size)
Max Operating Pressure	< 850 kPa
Type	Nipple / Barb Connector
Certification	CE
Origin	Mainland China

Common Applications

Garden drip irrigation and hose systems
Workshop air lines and pneumatic tools
Household and commercial plumbing connections
Water pumps and filtration systems
Aquariums, pond equipment, and hydroponic setups

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For guidance on selecting the right pipe fittings and understanding BSP thread standards, visit the NIST resource on pipe and fitting standards.

Learn more: Garden hose

Frequently Asked Questions

Q: What is a BSP thread and will this fitting work with my existing pipes?

A: BSP stands for British Standard Pipe, a widely adopted thread standard used in plumbing and irrigation systems across Australia, the UK, Asia, and many other regions. The 1/2" BSP female thread on this fitting is compatible with standard 1/2" BSP male-threaded valves, pipes, and connectors. If you're unsure, check your existing fittings with a thread gauge or compare the thread pitch to BSP specifications.

Q: How do I choose the right barb size for my hose?

A: Match the barb size to the inner diameter (ID) of your hose. For example, if your hose has a 12mm internal diameter, select the 12mm barb fitting. A correctly sized barb creates a snug, secure fit — too small and the hose may leak; too large and it may be difficult to connect or could damage the hose.

Q: Do I need hose clamps with this barb fitting?

A: For low-pressure applications such as garden drip irrigation, the barb design alone typically provides a reliable hold. For higher-flow or higher-pressure applications (closer to the 850 kPa maximum), using a hose clamp over the barb connection is recommended to ensure a leak-free seal and extra security.

Q: Is this fitting suitable for drinking water use?

A: The fitting is made from brass (copper alloy) with no high-concern chemicals listed. However, if you intend to use it in a potable (drinking) water system, please verify local regulations and standards for brass fittings in your region, as requirements may vary.