Increasing MI-FLEX Adaptor - Ø 80-Ø 100 (20-80-MR)
At a Glance
- 0.6mm 316L stainless steel construction
Seamless 25mm transition from ridged single wall to MI-FLEX liners
Gas-tight seal when used with approved high-temperature sealants
Rated for appliance temperatures up to 600°C (T600 designation)
Compliant with BSEN 1856-2, HETAS, CE and Building Regulations Document J
Versatile compatibility with wood (sub 20% moisture), oil, gas, and smokeless coal appliances
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 Increasing MI-FLEX Adaptor - Ø 80 to Ø 100, crafted from 0.6mm 316 stainless steel, is an essential accessory for a complete and secure chimney system. This adaptor is designed to connect your rigid single wall flue system to the MI-FLEX flexible flue liners, ensuring a smooth and reliable transition. Not only does it provide an increase of 25mm from the single wall to the flexible flue liner, but it also guarantees a gas-tight seal when used with appropriate sealants like fire cement, ceramic rope, or high-temperature sealant.
This adaptor is suitable for use with high-temperature appliances up to 600°C and is compliant with Building Regulations Document J. Perfect for wood (with less than 20% moisture), smokeless coal, gas, and oil appliances. For effective installation, it must be used within a masonry chimney, ensuring no exposed flex.
Additionally, the system must be designed for easy sweeping and maintenance, which should be carried out by competent professionals at least once a year for all fuels, and twice for solid fuels.
SKU: 20-80-MR
| Technical Specifications | |
|---|---|
| Material | 0.6mm 316L Stainless Steel |
| Size | u00d8 80 to u00d8 100 (25mm increase) |
| Temperature Rating | Up to 600u00b0C (T600) |
| Fuel Compatibility | Wood (<20% moisture), Oil, Gas, Smokeless Coal |
| Certifications | BSEN 1856-2, HETAS, CE, Building Regulations Document J |
| Sealant Recommendation | Fire cement, Ceramic rope, or High-temperature sealant |
