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Flex to Twin Wall Adaptor Ø 100 (2-100-101)
National Flues presents the Flex to Twin Wall Adaptor Ø 100 – a versatile, high-quality fitting designed for solid fuel and gas/oil appliances. This innovative chimney adaptor effortlessly connects flexible flue liners to twin wall systems, making it an essential solution for woodstoves, gas coal effect fires, and oil/gas boilers. Engineered to the highest safety standards and built with premium stainless steel, our adaptor enhances your chimney system's durability and performance.
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In Stock
£45.49
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Constructed from 304 and 316L stainless steel for superior durability
Secure screw-fix coupling design for a watertight connection within Class 1 chimneys
HETAS approved and CE marked, meeting rigorous safety standards
Designed to maintain a safe 50mm gap from combustible materials
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Please Note: All dimensions refer to the internal diameter of flues.
If unsure, please call 01670 206999 to ensure you choose the correct products.
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.
The Flex to Twin Wall Adaptor Ø 100 is an essential fitting for both solid fuel and gas/oil appliances, including woodstoves, gas coal effect fires, oil and gas boilers, and other solid fuel applications. This high-quality adaptor features an outer skin made from robust 304 grade stainless steel, with a 0.4mm thickness, and an inner skin crafted from durable 316 grade stainless steel, also 0.4mm thick. The insulation is composed of compressed rockwool, ensuring a density of 200kg/m³.
The highly resilient and fully welded parts are designed to maintain a safe distance of 50mm from combustible materials. Moreover, the TWPro range is both HETAS approved and CE marked, ensuring that it meets stringent safety and performance criteria. It boasts impressive designation numbers: EN1856-1 T600 N1 W V2 L50040 G50, and EN1856-1 T200 W V2 L50040 O20.
Installation is straightforward, with the parts secured using a reliable locking band. Always maintain a 50mm gap from the flue's exterior to any flammable materials, such as wood or plasterboard.
SKU: 2-100-101
Technical Specifications
SKU
2-100-101
Outer Material
304 Stainless Steel, 0.40mm thick
Inner Material
316L Stainless Steel, 0.40mm thick
Insulation
Compressed rockwool, 200kg/mu00b3
Approvals
HETAS / CE
Designation Numbers
EN1856-1 T600 N1 W V2 L50040 G50, EN1856-1 T200 W V2 L50040 O20
Distance To Combustibles
50mm
Coupling Type
Screw-fix locking band
• Ensure the adaptor is installed inside an existing Class 1 chimney, with no visible flex externally.
• Secure the fitting using the provided locking band to achieve a watertight connection.
• Always maintain a minimum clearance of 50mm between the flue and any combustible materials such as wood or plasterboard.
• Follow local building regulations and installation manuals closely to guarantee safety and compliance.
• If in doubt, consult a certified installer to ensure optimal performance.
It is suitable for solid fuel and gas/oil appliances such as woodstoves, gas coal effect fires, oil and gas boilers, and any other solid fuel appliances.
The outer skin is made from 304 grade stainless steel with a thickness of 0.4mm, and the inner skin is made from 316 grade stainless steel with a thickness of 0.4mm. The insulation consists of compressed rockwool with a density of 200kg/m³.
Yes, it is HETAS approved and CE marked, ensuring it meets rigorous safety and performance standards.
The TWPro Twin Wall Insulated Chimney parts should be secured together using a locking band. Ensure that the flue maintains a 50mm distance from any combustible materials like wood or plasterboard.
A minimum distance of 50mm is required from the outside of the flue to any combustible materials.
No, this transition must be made inside an existing Class 1 chimney, ensuring no flex is visible outside the brick or clay chimney.
The designation numbers include EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20.
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.
Read our review in our Flex to Twin Wall Adaptor Ø 100 buyers guide
Overview
the Flex to Twin Wall Adaptor Ø 100 from National Flues is a meticulously engineered component designed to deliver both safety and performance in your chimney system. Ideal for solid fuel and gas/oil appliances, this adaptor ensures a smooth and secure transition from a flexible flue liner to a twin wall system. If you are looking to enhance the overall efficiency of your heating system, this product is an indispensable choice.
Design and Materials
Crafted using a dual-layer of robust stainless steel, the adaptor features an outer layer made from 304 grade stainless steel at 0.40mm thickness and an inner layer of durable 316L stainless steel. This combination offers high resistance to corrosion and withstands extreme temperatures reliably. The compressed rockwool insulation, with a density of 200kg/m³, further enhances the thermal retention capabilities of your flue system. Investing in such high-quality materials means that your chimney system will remain efficient and safe for years to come.
Safety and Approvals
With stringent safety standards in mind, the Flex to Twin Wall Adaptor Ø 100 has achieved HETAS approval and CE marking, underpinning its compliance with rigorous European safety and performance criteria. Maintaining a safe 50mm distance from any combustible materials is a critical component of its design, ensuring that your home remains secure. This adaptor not only passes but exceeds the mandatory standards expected in modern installations, giving you a product that you can rely on with complete peace of mind.
Installation Process
The installation process is straightforward, designed to be completed by both the trade professional and experienced DIY enthusiasts. Begin by verifying that the adaptor is set within an existing Class 1 chimney; the connection should be made inside the chimney so that no flexible flue liner is visible externally. Secure the adaptor using the screw-fix locking band which ensures a watertight and stable connection. Important: Always maintain the minimum clearance of 50mm between the flue exterior and any combustible material like wood or plasterboard. Taking these precautions assures that the adaptor not only performs well but also adheres to safety regulations.
Optional Accessories to Consider
To further optimize your chimney system, you might want to explore additional optional accessories available from National Flues. Accessories such as chimney caps, flue liners, and additional insulation materials can provide enhanced protection against the elements and improve the overall efficiency of your system. For instance, a high-performance chimney cap can reduce downdrafts and prevent rain intrusion, whereas supplementary insulation can help maintain consistent internal temperatures. Each of these accessories is designed to work in harmony with the Flex to Twin Wall Adaptor Ø 100, ensuring a comprehensive solution for your heating requirements.
Common Objections Addressed
One of the most common concerns regarding chimney adaptors is the installation complexity and whether the product can adequately ensure safety. With our adaptor, the answer is a definitive yes. Its intuitive screw-fix coupling system makes installation straightforward, even in older chimney systems. Moreover, the dual-material construction guarantees longevity and performance, even in the harshest conditions. Another concern some homeowners raise is about the compatibility with various heating appliances. Rest assured, the Flex to Twin Wall Adaptor Ø 100 is versatile enough to support everything from woodstoves to gas and oil boilers, making it a robust choice for a wide range of applications.
Why Choose National Flues?
National Flues is committed to providing superior quality and reliable products that meet the evolving needs of both trade professionals and retail customers across the UK. With competitive prices, prompt nationwide delivery, and exceptional customer support, we pride ourselves on being a trusted supplier in the industry. Our products are engineered to high standards, ensuring that every installation is safe, efficient, and built to last. When you choose National Flues, you are not just purchasing a product; you are securing the expertise and reliability that comes with years of industry leadership.
Maximising Efficiency
A well-installed adaptor like the Flex to Twin Wall Adaptor Ø 100 contributes significantly to the overall efficiency of your heating system. By ensuring a tight, secure connection and optimal insulation, you are better able to maintain consistent heating while reducing energy loss. This efficiency not only translates to a warmer, more comfortable home during the colder months but also results in cost savings in the long term. Coupled with other specialist accessories, the efficiency of your chimney system is optimised, underlining the importance of investing in quality components.
Final Thoughts
In summary, the Flex to Twin Wall Adaptor Ø 100 offers an expertly engineered solution that addresses the critical needs of modern chimney systems. Its robust construction, combined with ease of installation and compliance with stringent safety standards, makes it an ideal choice for anyone looking to upgrade or maintain a high-performance chimney setup. Our comprehensive approach to quality and safety means you can invest in your heating infrastructure confidently, knowing that you have the best components on your side. With National Flues, you are assured of premium quality, exceptional support, and a product that stands the test of time. Your safety and comfort are our priorities, and this adaptor proves that commitment unequivocally.
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