× National Flues
We Will NOT Be Beaten on Price.
Free Delivery on Orders Over £100
5 Star Reviewed on Trustpilot
Free Flue Design Service Available
Help? 01670 206999 (8am-5pm)

Screw-FIX Top Hat Adaptor - Ø 80

National Flues offers the Screw-FIX Top Hat Adaptor - Ø 80, a premium accessory designed to secure MI-FLEX flue liner systems. This high-performance adaptor ensures safe, compliant, and efficient chimney installations, making it an indispensable component for wood, oil, gas, and smokeless coal heati... More...
Hover to Zoom / Click for Gallery

At a Glance

  • Designed for MI-FLEX 316 and 904 flexible flue liners, ensuring a secure, gas-tight transition
  • Withstands temperatures up to 600°C, suitable for wood (<20% moisture), oil, gas, and smokeless coal
  • Constructed from durable 316L stainless steel for long-lasting performance
  • Complies with Building Regulations Document J for safe chimney systems
  • Facilitates easy maintenance and cleaning when installed correctly
Now only £32.49
Including VAT Buy with confidence. If you find this cheaper within 48 hours of checkout, we'll refund the difference.

 

Payment Options

We Won't Be Beaten On Price

At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:

  • Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
  • Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
  • Operational Efficiency: We have streamlined processes to reduce overhead.

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

Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).

“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.

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

The Screw-FIX Top Hat Adaptor - Ø 80 is a versatile accessory meticulously crafted for seamless integration with MI-FLEX 316 and 904 flexible flue liners. This adaptor plays a critical role in ensuring a full chimney system is achieved when installed according to Building Regulations Document J. It is designed for use with a variety of appliances, including wood (less than 20% moisture), smokeless coal, gas, and oil, all of which can operate at temperatures up to 600°C (T600 designation).

The adaptor must be entirely enclosed within a masonry chimney, as non-masonry enclosures such as timber or plasterboard are not acceptable. For installation, the bottom fixing must be secured both to the connecting flue below and the flexible liner above to form a gas-tight seal, using appropriate materials like fire cement, ceramic rope, or high-temperature sealant. The unit also facilitates routine maintenance and cleaning, which should ideally be conducted by a HETAS registered professional, especially for solid fuel applications.

SKU: 25-80-THA

Technical Specifications
SKU25-80-THA
Sizeu00d8 80mm
Material316L Stainless Steel
Temperature RatingUp to 600u00b0C
SystemMI-FLEX 316 and 904 flexible flue liners
ApprovalsCE, HETAS
Fuel CompatibilityWood (<20% moisture), Oil, Gas, Smokeless Coal
Install the adaptor securely at the base of the chimney beneath the register plate. Use high-quality fire cement, ceramic rope, or a high-temperature sealant to achieve a gas-tight seal between the connecting flue and the flexible liner. It is essential that the adaptor is entirely enclosed within a masonry chimney; non-masonry enclosures such as timber or plasterboard are not acceptable. For optimal safety and regulatory compliance, routine maintenance and cleaning should be performed by a HETAS registered professional.

It is suitable for use with wood (less than 20% moisture), smokeless coal, gas, and oil appliances, operating at temperatures up to 600°C.

It should be installed at the base of the chimney beneath the register plate, fully enclosed within a masonry chimney.

Ensure a gas-tight seal using fire cement, ceramic rope, or high-temperature sealant, and secure it properly to the connecting flue and the flexible liner.

The system should be cleaned and inspected at least once a year, ideally twice for solid fuel appliances, especially at the start and end of the heating season.

No, it must be completely enclosed inside a masonry chimney as non-masonry enclosures like timber or plasterboard are not acceptable.

Maintenance should be carried out by a competent person, preferably a HETAS registered professional for solid fuel applications.

A gas-tight seal prevents potentially dangerous gases from escaping the chimney system, ensuring safe and efficient operation of the flue system.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, April 3rd. If you need faster stove or fireplace delivery please give us a call. We can often 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. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

Price Match Guarantee +

We will match any price like for like. If you find it cheaper within 48 hours, we'll refund the difference.

Read our buyers guide for this Screw-FIX Top Hat Adaptor - Ø 80

National Flues Ltd Verdict

The Screw-FIX Top Hat Adaptor - Ø 80 is a top-tier choice for any flue lining project. Its exceptional design and quality make it a standout product in the market. At National Flues, we proudly offer reliable nationwide delivery to both retail and trade customers, ensuring you get your products quickly and securely.

The Screw-FIX Top Hat Adaptor - Ø 80 is designed to facilitate a secure transition from a connecting flue system to a flexible flue liner, ensuring a gas-tight seal and compliance with building regulations.

National Flues is a leading supplier of high-quality fireplaces and flues across the UK, known for exceptional prices and reliable nationwide delivery. Catering to both retail and trade customers, National Flues ensures secure online payments and excellent customer service.

 

Our Rating Image

Ensure your installation is flawless—order now!

Your recently viewed products:

Multiple Payment Options- including Klarna, Clearpay, Mastercard, Visa and Paypal
Free Design Service