15mm B MI Solid Plug - B&Q - S0108

This 15mm B MI solid plug is crafted from malleable cast iron, an iron-carbon alloy engineered to ...

Best current price£7.20from City Plumbing GB

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City Plumbing GBUnbranded 15mm B MI Solid Plug 291 BTK S0108
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Product Information

Full details

The 15mm B MI Solid Plug is an essential component for professional plumbers and DIY enthusiasts who need a reliable, high-strength solution for sealing unused ports in piping systems. Crafted from malleable cast iron, this plug offers exceptional durability and pressure resistance, though it is specifically intended for iron-based piping systems and requires proper thread sealant to prevent leaks.

All features

Model Part NumberS0108
BrandB&Q

Extended Product Information

FAQs

Can this plug be used for gas lines?

This plug is intended for plumbing and piping systems. Always check local building codes and verify that the specific fitting is rated for the gas pressure and type in your region.

Is this plug compatible with copper pipes?

While the threads may match, joining iron fittings to copper pipes can cause galvanic corrosion. Use an appropriate dielectric union or transition fitting if connecting to non-ferrous piping.

What tools do I need for installation?

A standard adjustable wrench or a pipe wrench is sufficient for installation.

Can this be reused?

Yes, provided the threads remain undamaged during removal.

Does it come with a gasket?

No, this is a threaded fitting that relies on thread sealant to create a seal.

Troubleshooting

Difficulty threading into the fitting

Check for debris or paint inside the female fitting threads and ensure the threads are not cross-threaded.

Minor seepage after installation

Remove the plug, re-apply a fresh layer of thread sealant or PTFE tape, and tighten firmly.

Visible surface rust

Clean the surface with a wire brush and apply a metal primer or rust-resistant paint.

Pros and Cons

Pros

  • High structural strength and durability
  • Excellent resistance to vibration and thermal expansion
  • Compatible with standard 15mm plumbing fittings
  • Cost-effective solution for permanent line termination

Cons

  • Susceptible to surface oxidation if left unpainted or untreated
  • Heavier than plastic or brass alternatives
  • Requires professional-grade pipe thread compound for a liquid-tight seal

Setup, Compatibility & Care

To install the plug, ensure that both the plug threads and the target fitting are free of debris or old sealant. Apply a generous amount of PTFE tape or thread sealant to the male threads of the plug before inserting it. Tighten using an adjustable wrench until snug; do not overtighten, as this can stress the fitting. Since the material is iron-based, ensure compatibility with your existing pipe material to prevent galvanic corrosion. If using the plug in a damp environment, applying a rust-preventative spray or paint to the exposed head is recommended to maintain its longevity.

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