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Screw-FIX Long Tail Adaptor - Ø 125 (25-125-MAELT)

National Flues presents the Screw-FIX Long Tail Adaptor - Ø 125, a premium chimney adaptor engineered for flawless connections between rigid flue systems and MI-FLEX flexible liners. This high-quality chimney installation accessory is built from robust 0. Read more...
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At a Glance

  • Crafted from robust 0.6mm 316 stainless steel
  • Designed for a secure, transitional joint between rigid flue systems and MI-FLEX flexible liners
  • Withstands temperatures up to 600°C (T600 designation)
  • Suitable for wood, smokeless coal, gas, and oil fuels
  • Complies with Building Regulations Document J for enclosed masonry chimneys

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

The Screw-FIX Long Tail Adaptor - Ø 125 is an essential component for any professional chimney installation. Crafted from robust 0.6mm 316 stainless steel, this adaptor ensures a seamless connection between your rigid single wall flue system and MI-FLEX flexible flue liners. This fitting pairs perfectly with MI-FLEX 316 and 904 flexible liners, forming a complete, secure chimney system that complies with Building Regulations Document J.

Capable of withstanding temperatures up to 600°C (T600 designation), this adaptor is suitable for a range of fuels including wood (with less than 20% moisture), smokeless coal, gas, and oil. It is imperative to use it within an enclosed masonry chimney for optimal performance and safety. The bottom fixings precisely connect and secure the flue system, creating a gas-tight seal.

Regular maintenance, including annual sweeping by a competent person and biannual sweeping for solid fuel appliances, is recommended to ensure your chimney's efficiency and safety.

SKU: 25-125-MAELT

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
Material0.6mm 316 Stainless Steel
SizeØ 125 mm
Temperature RatingUp to 600°C (T600)
Fuel CompatibilityWood (<20% moisture), Smokeless Coal, Gas, Oil
SystemCompatible with MI-FLEX 316 and 904 flexible liners
ComplianceCE / HETAS, Building Regulations Document J
Ensure the adaptor is installed within an enclosed masonry chimney. The bottom fixings are designed to precisely connect and secure the flue system, creating a gas-tight seal. Always use appropriate high-temperature sealants such as fire cement, ceramic rope or tape to guarantee compliance and safety. Regular maintenance, including an annual sweep by a competent person (biannual for solid fuel appliances), is essential. Note that the adaptor is not suitable for external or non-enclosed installations.

The adaptor is crafted from high-quality 0.6mm 316 stainless steel, ensuring durability and longevity.

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

It is suitable for a range of fuels including wood (with less than 20% moisture), smokeless coal, gas, and oil, and can withstand temperatures up to 600°C.

No, the adaptor must be used within an enclosed masonry chimney for optimal safety and performance.

Chimneys should be swept and inspected at least once a year by a competent person. For solid fuel applications, sweeping is recommended twice a year.

The use of fire cement, ceramic rope or tape, or high-temperature sealant is advisable to ensure a gas-tight seal.

Chimney sweeping should be performed by a competent person. For solid fuel applications, consult a HETAS registered sweep.

 

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