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MI-FLEX Adaptor 1mm - Ø 150 (20-150-MAE1)

National Flues proudly presents the MI-FLEX Adaptor 1mm - Ø 150, a premium chimney flue adaptor designed to flawlessly connect your rigid flue systems to MI-FLEX flexible liners. This high-quality stainless steel component is compatible with wood, oil, gas, and smokeless coal, making it an essential accessory for efficient and safe chimney installations. Read more...
Now only £33.99
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At a Glance

  • Made from durable 316L stainless steel with a natural finish
  • Seamlessly connects rigid flue systems to MI-FLEX flexible liners
  • Suitable for wood (under 20% moisture), oil, gas and smokeless coal
  • Withstands temperatures up to 600°C (T600) for reliable performance
  • Compliant with Building Regulations Document J
  • Provides a gas-tight connection when used with proper sealants
  • Part of the comprehensive MF20 MI-FLEX accessory range

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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 1mm - Ø 150 is designed to provide a seamless connection between a single wall rigid flue system and a MI-FLEX 316 or 904 flexible flue liner with the same nominal diameter. This adaptor is part of our MF20 MI-FLEX accessory range, ensuring a comprehensive chimney system when used in conjunction with MI-FLEX liners. Perfect for multiple fuel types, including wood with less than 20% moisture, smokeless coal, gas, and oil, it handles temperatures up to 600°C.

Compliance with Building Regulations Document J is crucial, as it's essential that flexible flue liners are completely enclosed within a masonry chimney. Any exposed flex must be avoided and connections should be gas-tight, using fire cement, ceramic rope, tape, or high-temperature sealant. Regular maintenance, including sweeping by a competent person, ensures optimal performance and longevity of your chimney system.

SKU: 20-150-MAE1

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, November 17th. 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
Adaptor DiameterØ 150
Wall Thickness1mm
Material316L Stainless Steel
Temperature RatingUp to 600°C (T600)
Fuel CompatibilityWood (<20% moisture), Oil, Gas, Smokeless Coal
ApprovalsHETAS / CE
System RangeMI-FLEX Accessories MF20
FinishNatural / Stainless Steel
Installation Instructions & Warnings: • Ensure the adaptor is fitted by a competent professional to maintain the integrity of your chimney system. • The adaptor is designed to connect a rigid flue system to a MI-FLEX flexible liner; verify that both components have matching nominal diameters. • It is essential to completely enclose the flexible flue liner within a masonry chimney as per Building Regulations Document J. Exposed flex or non-masonry enclosures (e.g. timber or plasterboard boxing) are not acceptable. • Achieve a gas-tight seal by applying fire cement, ceramic rope, tape, or a high-temperature sealant at the connection points. • Regular maintenance, including sweeping and inspection by a qualified chimney sweep (especially for solid fuel applications), is recommended to ensure longevity and safe operation. • Before installation, review all manufacturer instructions and local regulations to ensure compliance.

The MI-FLEX Adaptor is suitable for wood with less than 20% moisture, smokeless coal, gas, and oil.

Yes, it complies with Building Regulations Document J, which requires flexible flue liners to be completely enclosed within a masonry chimney.

The MI-FLEX Adaptor can handle temperatures up to 600°C (T600 designation).

Regular sweeping and inspection should be carried out by a competent person at least once a year, and twice a year for solid fuel appliances.

Use fire cement, ceramic rope or tape, or high-temperature sealant to secure the bottom fixing into the connecting flue and flexible liner.

No, flexible flue liners must be enclosed within a masonry chimney. Non-masonry enclosures like timber or plasterboard boxing are not acceptable.

For solid fuel applications, you can find a list of HETAS registered sweeps at www.hetas.co.uk.

 

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