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Enhance your chimney system with National Flues' Increasing MI-FLEX Adaptor, an essential component designed for connecting ridged single wall flue systems to MI-FLEX liners. This robust stainless steel adaptor guarantees a secure, gas-tight transition, making it an indispensable accessory for wood, oil, gas, and smokeless coal appliances. Trust National Flues for premium chimney accessories that comply with the latest UK building regulations.
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£19.99
Give us a call if you find it cheaper and we'll try to price match.
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
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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.
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
The Increasing MI-FLEX Adaptor must be installed within a masonry chimney to ensure that the flexible flue liner is never exposed. Installation should only be performed by competent professionals to ensure safety and compliance with Building Regulations Document J. When installing, ensure you use the recommended sealants (fire cement, ceramic rope, or high-temperature sealant) to establish a gas-tight seal. Additionally, the chimney system must be designed for unobstructed sweeping, to be conducted at least once a year for all fuel types and twice a year for solid fuels. It is imperative that no exposed flex is left during installation to maintain system integrity.
The adaptor is made from high-quality 0.6mm 316 stainless steel, ensuring durability and reliability.
No, it is specifically designed for use with MI-FLEX Multi-fuel flexible flue liners.
Yes, it complies with Building Regulations Document J, which mandates that flexible flue liners must be enclosed within a masonry chimney.
The adaptor is suitable for use with appliances that operate at temperatures up to 600°C (T600 designation).
It is recommended to use fire cement, ceramic rope, or high-temperature sealant to ensure a gas-tight seal.
Chimney systems should be swept at least once a year for all fuels and at least twice a year for solid fuels.
Installation of flue liners should be conducted by competent professionals to ensure compliance with safety standards and regulations.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Wednesday, April 30th.
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 on a retail basis. Give us a call if you find it cheaper and want to buy from us.
Comprehensive Buyers Guide for the Increasing MI-FLEX Adaptor
The Increasing MI-FLEX Adaptor is an integral part of a modern, efficient chimney system. Designed to bridge the gap between ridged single wall flues and MI-FLEX flexible liners, this adaptor ensures a seamless, secure connection that enhances both performance and safety.
Why This Adaptor is Essential
The adaptor is crafted from 0.6mm 316L stainless steel, known for its durability and resistance to extreme temperatures. With a 25mm increase in diameter, it is specifically engineered to provide a smooth transition between different flue components, ensuring that there are no gaps where hazardous gases might escape. This gas-tight seal is particularly important when the chimney system is exposed to high operating temperatures, as it minimises the risk of leaks and ensures optimal combustion efficiency.
Key Benefits Include:
- Enhanced durability and longevity even under high-temperature conditions.
- A secure transition that supports the overall integrity of the chimney system.
- Assurance of safety and regulatory compliance with BSEN 1856-2, HETAS, CE and Building Regulations Document J.
Detailed Features and Their Impact
Each feature of the Increasing MI-FLEX Adaptor has been carefully considered to meet the demanding requirements of modern heating systems. The adaptor’s robust construction and precise design reduce the potential for mechanical failure under prolonged use. This means not only greater peace of mind for homeowners but also reduced maintenance costs over the product’s lifecycle.
The incorporation of a gas-tight seal in conjunction with high-temperature sealants such as fire cement, ceramic rope, or specialised high-temperature sealant ensures that the adaptor performs reliably even in the most challenging environments. This is especially beneficial for systems used with multiple fuel types, including wood, oil, gas, and smokeless coal. It provides versatility and effectiveness, irrespective of the fuel used.
Installation and Maintenance Considerations
Proper installation of this adaptor is paramount. It must only be installed within a masonry chimney. This necessity is rooted in ensuring that the flexible flue liner remains fully enclosed, protecting it from external elements and ensuring a safe, controlled environment for the combustible elements of your heating system.
When planning your installation, consider the following steps:
- Engage a competent professional who is fully conversant with UK building regulations.
- Ensure that the system design accommodates easy sweeping. Regular cleaning is essential – at least once a year for standard fuels, and twice yearly for systems using solid fuels.
- Use the recommended sealing materials diligently to guarantee a gas-tight connection.
Overcoming Common Objections
Some may wonder if this adaptor can be self-installed or if it is compatible with all types of flue liners. The answer is twofold: first, while it might be technically possible to install the adaptor yourself, compliance with safety standards is critical. Professional installation not only ensures adherence to regulations but also minimises the risk of future malfunctions. Second, this adaptor is specifically designed for use with MI-FLEX flexible flue liners, so while it excels in its domain, it may not be compatible with alternate designs.
Furthermore, questions about durability are common. The use of premium-grade 316L stainless steel means that this product offers exceptional resistance to corrosion and degradation over time, making it a safe long-term investment for any home or commercial setting.
The Role of Optional Accessories
For those looking to further enhance their chimney system, consider exploring our range of optional accessories. Items such as advanced sealing products, flue liners, and maintenance tools can be critical in achieving a fully optimised system. These accessories work harmoniously with the Increasing MI-FLEX Adaptor to not only secure your system but also to improve its overall efficiency and longevity.
Final Considerations and How to Purchase
Investing in the Increasing MI-FLEX Adaptor is a commitment to safety, efficiency, and durability. It is an essential component that ensures your chimney system operates flawlessly, backed by rigorous industry standards and UK building regulations. Whether you are upgrading your current system or installing a new one, this adaptor offers the reliability and performance you need.
National Flues is dedicated to providing high-quality chimney components and accessories that meet the highest standards of performance and safety. We encourage you to review our optional accessories to complement this adaptor, ensuring you have a complete system that delivers outstanding results for years to come. Our comprehensive range of products is designed with your convenience and peace of mind in mind, making every aspect of installation and maintenance as straightforward as possible.
Don’t compromise on the effectiveness of your chimney system. Trust in the robust design and proven performance of the Increasing MI-FLEX Adaptor to deliver a secure and efficient connection every time. Optimise your heating system today and enjoy the benefits of a truly professional installation. Buy now or call 01670 206 999.
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