Screw-FIX Top Hat Adaptor - Ø 80 (25-80-THA)
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
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.
Price Match Guarantee +
We will match any price, like-for-like, on a retail basis. Give us a call if you find it cheaper and want to buy from us.
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]
- Info
- Specs
- Install
- FAQs
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 | |
|---|---|
| SKU | 25-80-THA |
| Size | u00d8 80mm |
| Material | 316L Stainless Steel |
| Temperature Rating | Up to 600u00b0C |
| System | MI-FLEX 316 and 904 flexible flue liners |
| Approvals | CE, HETAS |
| Fuel Compatibility | Wood (<20% moisture), Oil, Gas, Smokeless Coal |
