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MI-FLEX Adaptor - Ø 150 (20-150-MAE)

Discover the excellence of the MI-FLEX Adaptor - Ø 150 by National Flues, a high-quality 316L stainless steel component engineered for seamless flue transitions. Perfect for multi-fuel heating systems, this adaptable and efficient product is a must-have for those seeking a reliable connection between rigid and flexible flue systems. Read more...
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At a Glance

  • Made from 0.6mm thick 316L stainless steel for top durability
  • Provides a reliable, gas-tight transition between flue systems
  • Compatible with multifuel options including wood, oil, gas, and smokeless coal
  • Withstands temperatures up to 600°C (T600 rating)
  • Designed for installation within masonry chimneys to comply with Building Regulations Document J

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Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.

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Have Questions?
Phone: 01670 206999
Email: sales@nationalflues.com

The MI-FLEX Adaptor - Ø 150 is a 0.6mm thick 316 stainless steel adaptor specifically designed for seamless connections between a rigid single wall flue system and the MI-FLEX flexible flue liner. This adaptor is vital for achieving a gas-tight transition, ensuring the secure and efficient operation of your heating system. It is suitable for use with multiple fuels including wood with less than 20% moisture, smokeless coal, gas, and oil, and can withstand temperatures up to 600°C (T600 designation).

To comply with Building Regulations Document J, it must be installed entirely within a masonry chimney. The bottom fixings secure the transition neatly within the existing masonry, and additional sealing materials such as fire cement, ceramic rope, or high-temperature sealant are recommended for best results. Maintenance is straightforward, requiring routine sweeping by a competent person and regular inspections to ensure safety and efficiency.

This makes it a versatile, reliable choice for maintaining clean and efficient flue systems.

SKU: 20-150-MAE

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, November 14th. This is based on current lead times. Bear in mind that it is a busy time of year. If you need a product delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. Visit our Shipping Information page for more information.

About National Flues Ltd +

We began over 30 years ago as a fireplace shop in the North East. We now supply hundreds of trade professionals and thousands of retail customers, all across the UK, every month. We are still a family owned business, lead by the MD Neil, and always try our best to deliver the best possible experience. We also price match, so give us a call if you find this cheaper and want to buy from us. Visit our about us page to read a bit more.

Technical Specifications
Material316L Stainless Steel
Thickness0.6mm
Nominal DiameterØ 150
Temperature Rating600°C (T600)
Fuel CompatibilityWood (less than 20% moisture), Oil, Gas, Smokeless Coal
ApprovalsHETAS / CE
Installation RequirementMust be fully installed within a masonry chimney
• Ensure the adaptor is installed entirely within a masonry chimney as per Building Regulations Document J. • Use bottom fixings to secure the adaptor firmly, ensuring there is no visible flex at the transition point. • For enhanced sealing, it is recommended to apply additional sealing materials such as fire cement, ceramic rope, or high-temperature sealant around the joint. • Routine maintenance, including regular sweeping by a competent person and periodic inspections, is essential to maintain system efficiency and safety.

Its primary function is to connect a rigid single wall flue system to a MI-FLEX flexible flue liner, ensuring a seamless, gas-tight transition inside a masonry chimney.

The adaptor is made from 0.6mm thick 316 stainless steel, making it durable and resistant to high temperatures and corrosion.

It is compatible with wood (less than 20% moisture), smokeless coal, gas, and oil.

It can withstand temperatures up to 600°C (T600 designation).

It should be installed entirely within a masonry chimney as per Building Regulations Document J. Bottom fixings should secure the adaptor and ensure no flex is visible.

Regular sweeping and inspections are necessary, ideally by a competent person. For solid fuel applications, you should check for blockages and deposits at least twice a year.

No, chemical cleaners and mild steel tools should not be used to sweep stainless steel chimneys as they can cause damage.

 

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