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Screw-FIX Long Tail Adaptor - Ø 80 (25-80-MAELT)

National Flues presents the Screw-FIX Long Tail Adaptor - Ø 80, a premium 316 stainless steel transitional joint designed to seamlessly connect a rigid single wall flue system to a MI-FLEX flexible liner. Ideal for multi-fuel applications including wood, oil, gas, and smokeless coal, this adaptor offers unmatched durability and compliance with the latest safety standards.
The price you pay today £28.99
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At a Glance

    Crafted from 316 stainless steel with 0.6mm thickness
    Designed for multi-fuel systems: wood, oil, gas, and smokeless coal
    Withstands high temperatures up to 600°C for robust performance
    Provides a secure transitional joint from rigid single wall to MI-FLEX liners
    Fully compliant with Building Regulations Document J for chimney safety
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, July 1st. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please give us a call. We can sometimes reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.

Warranty & Returns +

All our products come with warranties and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

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Have Questions?
Phone: 01670 206999
Email: [email protected]

The Screw-FIX Long Tail Adaptor - Ø 80, constructed from 0.6mm thick 316 stainless steel, serves as a secure transitional joint connecting rigid single wall flue systems to MI-FLEX 316 and 904 flexible flue liners. Perfect for multi-fuel applications, this adaptor is designed to withstand temperatures up to 600°C, making it suitable for use with wood (under 20% moisture), smokeless coal, gas, and oil-fueled appliances. Complying with Building Regulations Document J, our adaptor ensures your flue system remains fully enclosed within masonry chimneys, preventing any exposure of the flexible liner.

To achieve a gas-tight seal, it should be securely fixed using fire cement, ceramic rope, or high-temperature sealants. Easy maintenance is guaranteed, with the flue system designed for straightforward sweeping and yearly inspections. For solid fuel applications, a list of certified HETAS registered chimney sweeps can be found at www.hetas.co.uk.

Ensure your flue system stays in top condition by cleaning it at least twice a year: once at the end of the heating season to clear any deposits and once at the start of the new season to check for blockages.

SKU: 25-80-MAELT

Technical Specifications
Material316L Stainless Steel
Thickness0.6mm
Temperature RatingUp to 600u00b0C
Sizeu00d8 80mm
ApplicationRigid single wall flue system to MI-FLEX flexible liner
Fuel CompatibilityWood (under 20% moisture), Smokeless Coal, Gas, Oil
ComplianceBuilding Regulations Document J, CE / HETAS
Fixing MethodsFire cement, Ceramic rope, High-temperature sealants
Ensure that the adaptor is installed completely within a masonry chimney, as required by Building Regulations Document J. Use the recommended fixing methods such as fire cement, ceramic rope, or high-temperature sealants to achieve a gas-tight connection. It is critical to verify that no part of the flexible liner is exposed outside the masonry. Regular maintenance is advised: clean the flue system at least once a year, and for solid fuel appliances, perform a sweep at the end and start of the heating season. Exercise caution and consult a certified HETAS chimney sweep when in doubt.

The adaptor is made from high-quality 316 stainless steel with a thickness of 0.6mm.

Yes, it is suitable for use with wood (under 20% moisture), smokeless coal, gas, and oil-fueled appliances.

The Screw-FIX Long Tail Adaptor can withstand temperatures up to 600°C (T600 designation).

Ensure a gas-tight seal by securing the adaptor with fire cement, ceramic rope, or high-temperature sealant.

No, it must be installed completely enclosed inside a masonry chimney, as per Building Regulations Document J.

The chimney system should be cleaned at least once a year, and for solid fuel appliances, it is recommended to sweep twice a year.

A list of HETAS certified chimney sweeps is available at www.hetas.co.uk.

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