Plumbright Brass Hexagon Bush - 2 x 1 - BHB21

The Plumbright Brass Hexagon Bush is a durable plumbing fitting designed for connecting pipes of d...

Best current price£13.26from City Plumbing GB

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City Plumbing GBPlumbright Brass Hexagon Bush 2 X 1 Bhb21
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B&QB&Q - Brass Hexagon Bush 2 X 1 Bb21 Bhb21
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Product Information

Full details

The Plumbright Brass Hexagon Bush (BHB21) is an essential plumbing component designed for professional contractors and DIY enthusiasts who need to bridge the gap between two different pipe sizes in a water system. Providing a reliable, leak-free 2-inch to 1-inch reduction, this fitting is valued for its robust brass build and precision engineering; however, users must ensure their existing pipe threads are compatible with the specific BSP standard before installation to avoid cross-threading.

All features

Model Part NumberBHB21
BrandPlumbright

Extended Product Information

FAQs

Is this fitting suitable for hot water systems?

Yes, the brass construction is highly resistant to heat and is ideal for both hot and cold water installations.

Can this be used for gas lines?

This fitting is designed for plumbing water systems. Always consult local regulations before using plumbing fittings for gas applications.

Do I need to use thread seal tape?

It is highly recommended to use PTFE tape or a liquid thread sealant to ensure a 100% leak-free connection.

What tools do I need for installation?

A correctly sized open-ended wrench or adjustable spanner is all that is required.

Is the brass lead-free?

The Plumbright Brass Hexagon Bush meets standard construction requirements for general plumbing, but please verify local compliance if installing in a specific potable water system.

Troubleshooting

Connection is leaking after installation

Ensure sufficient PTFE tape was applied to the threads and confirm that the threads are not cross-threaded. Re-seat the fitting if necessary.

The fitting is difficult to turn

Check for debris in the threads or ensure you are not cross-threading the pipes. Back the fitting out and re-align.

Pros and Cons

Pros

  • High-grade brass material prevents rust and degradation
  • Easy to tighten using standard hand tools thanks to the hex profile
  • Provides a reliable, leak-proof seal for pressure systems
  • Compact design saves space in complex pipe manifolds

Cons

  • Requires proper thread sealant or tape for a perfect seal
  • Limited to specific 2-to-1 inch size reduction applications
  • Brass can be soft if incorrect tools are used, potentially marring the finish

Setup, Compatibility & Care

To install, first ensure the threads of both pipes are clean and free of debris. Apply a suitable PTFE thread seal tape or a high-quality pipe sealing compound to the male threads of the bush. Use an appropriately sized spanner to tighten the bush into the 2-inch fitting, then attach the 1-inch pipe securely. Do not overtighten, as this can damage the internal threads. Regularly inspect the connection for signs of moisture or weeping after the system has been pressurized. If the brass begins to dull or tarnish, it can be gently cleaned with a non-abrasive cloth; avoid harsh acidic cleaners that may compromise the metal.

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