Draper Double Union - 1/4 inch BSP - 5 Pack

Name: Draper Double Union - 1/4 inch BSP - 5 Pack
Brand: Draper
SKU: hhrtizsrsa
Availability: InStock

These Draper double union airflow hose couplings are designed for reliable and secure connections ...

Best current price£9.40from Power Tools Direct

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Draper Tools Draper Double Union 1/4In Bsp (Pack Of 5) 29879

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Product Information

Full details

The Draper Double Union 1/4 inch BSP couplings are designed for professional mechanics, DIY enthusiasts, and workshop operators who require reliable, leak-free connections for their pneumatic air tool systems. These couplings excel at maintaining consistent air pressure and airflow, ensuring tools like air wrenches and sanders operate at peak efficiency. While these fittings are highly durable and easy to install, users should ensure they are matched with compatible 1/4 inch BSP thread specifications to avoid potential air leaks.

All features

Model Part Number	29879
Brand	Draper

Extended Product Information

FAQs

Are these couplings compatible with NPT threads?

No, these are BSP (British Standard Pipe) threads. Mixing BSP and NPT threads can lead to leaks and damaged fittings.

Can these be used with water hoses?

These are specifically designed for pneumatic (air) tool systems and are not recommended for high-pressure water applications.

How many couplings are included in the pack?

Each pack contains five individual 1/4 inch BSP double union couplings.

Should I use thread sealant with these?

It is highly recommended to use a high-quality thread sealant or PTFE tape to ensure a perfectly airtight seal.

Are these suitable for high-impact tools like air wrenches?

Yes, their durable design is intended to handle the vibrations and demands of pneumatic wrenches and grinders.

Troubleshooting

Air leaking from the coupling connection

Ensure the connection is tightened sufficiently and verify that thread seal tape has been applied correctly.

Difficulty threading the coupling onto the tool

Check that the thread size is exactly 1/4 inch BSP and verify that the threads on both the tool and coupling are not damaged or clogged with debris.

Pros and Cons

Pros

Ensures secure, leak-free pneumatic connections
High-quality construction for long-term durability
Industry-standard sizing for broad compatibility
Cost-effective 5-pack configuration

Cons

Requires proper thread sealant for optimal seal
Limited to 1/4 inch BSP applications
Not intended for non-pneumatic fluid applications

Setup, Compatibility & Care

To install, ensure the threads on both your air hose and the tool are clean and free of debris. Use a small amount of PTFE (plumber's) tape around the male threads to provide a secondary seal against air leaks. When tightening, use the appropriate wrench size to secure the union; avoid over-tightening to prevent stripping the threads. For care, regularly inspect the couplings for signs of wear or corrosion. If you notice a drop in tool performance, check the couplings first for any accumulation of dirt that might restrict airflow. Store unused units in a cool, dry place to prevent oxidation.