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National Flues presents the KC Twin Wall to Flex Adaptor Ø 100, a premium chimney accessory designed to seamlessly connect twin wall systems to flexible flue liners. Built to serve solid fuel, oil, and gas appliances, this HETAS Approved and CE-marked adaptor delivers safe, efficient performance and lasting reliability. Its robust stainless steel construction makes it a trusted solution for both residential and commercial installations, ensuring a secure and compliant fit.
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£39.99
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At a Glance
Durable construction featuring 304 stainless steel outer and 316 stainless steel inner skins, both 0.40mm thick
Compliant with EN1856-1 standards with HETAS Approval and CE marking
Superior thermal performance with compressed rockwool insulation (128kg/m³)
Designed specifically for twin wall to flexible flue liner transitions
Easy and secure installation using a locking band
Suitable for a variety of fuels including wood, oil, gas, and low sulphur coal
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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.
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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.
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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 KC Twin Wall to Flex Adaptor Ø 100 is designed for seamless integration with solid fuel and gas/oil appliances, such as woodstoves, gas coal effect fires, oil boilers, and any other solid fuel appliances. Featuring an outer skin made from 304 grade stainless steel and an inner skin crafted from 316 grade stainless steel, both with a thickness of 0.4mm, this adaptor ensures durability and longevity. The compressed rockwool insulation boasts a density of 128kg/m3, offering superior thermal efficiency.
Fully welded parts and a compliance with EN1856-1 standards (T600 N1 W V2 L50040 G60 and T200 P1 W V2 L50040 O20) guarantee safety and performance. The KC Adaptor is HETAS Approved and CE marked, ensuring it meets the highest industry standards. Installation is a breeze with a locking band to secure parts together, maintaining a crucial 60mm distance from any combustible materials.
EN1856-1 (T600 N1 W V2 L50040 G60 and T200 P1 W V2 L50040 O20)
Approvals
HETAS, CE marked
Installation
Requires a 60mm clearance from combustibles; features a locking band for secure assembly
Warranty
12 Years
For optimal performance, install the KC Twin Wall to Flex Adaptor Ø 100 within an existing Class 1 Chimney. Use the integrated locking band to secure all components together, ensuring a firm connection that maintains a minimum clearance of 60mm to any combustible materials. Always follow the manufacturer's installation guidelines carefully. This adaptor must be concealed within the structure of the chimney, ensuring that no flexible flue liner remains visible outside the brick or clay chimney envelope.
Yes, the KC Twin Wall to Flex Adaptor is compatible with solid fuel appliances, including woodstoves.
The outer skin is made from 304 grade stainless steel, while the inner skin is 316 grade stainless steel, both 0.4mm thick.
Yes, the KC Twin Wall to Flex Adaptor is HETAS Approved and CE marked, ensuring compliance with industry standards.
The insulation is made from compressed rockwool with a density of 128kg/m3 for excellent thermal efficiency.
A 60mm distance must be maintained from the outside of the flue to any combustible materials, such as wood or plasterboard.
The parts of the KC Twin Wall to Flex Adaptor are secured using a locking band for easy and reliable assembly.
No, the transition must occur within an existing Class 1 Chimney, with no flex visible outside the brick or clay chimney.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Tuesday, April 29th.
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 KC - Twin Wall to Flex Adaptor - Ø 100 buyers guide
Introduction
The KC Twin Wall to Flex Adaptor Ø 100 from National Flues is engineered to offer a reliable, durable solution for connecting your twin wall chimney systems to flexible flue liners. Whether you are upgrading an existing system or integrating a new appliance, this adaptor provides the flexibility and safety required to support a variety of fuels, including wood, oil, gas, and low sulphur coal. In this comprehensive guide, we will explore the features, installation process, and key benefits of the KC Twin Wall to Flex Adaptor, while addressing common concerns and questions to help you make an informed choice.
Product Overview
This versatile adaptor is constructed with two layers of high-quality stainless steel – an outer skin made from 304 grade and an inner layer of 316 grade – each with a thickness of 0.40mm. This dual construction not only offers robust protection against the elements but also ensures long-lasting durability even under challenging conditions. The inclusion of compressed rockwool insulation, with a density of 128kg/m³, supports excellent heat retention and energy efficiency. Conforming to EN1856-1 standards, this product is HETAS Approved and CE marked, which means it adheres to the highest safety and quality guidelines in the industry.
Key Benefits and Features
• Durability: Thanks to the high-grade stainless steel construction, the adaptor is resistant to corrosion and environmental wear. This makes it ideal for long term use in both residential and commercial settings.
• Safety Compliance: With full compliance to EN1856-1, as well as the backing of HETAS Approval and CE marking, you can trust that your installation meets stringent industry standards for safety and performance.
• Thermal Efficiency: The compressed rockwool insulation significantly improves heat retention, ensuring that the adaptor operates efficiently and helps in maintaining a balanced temperature throughout your system.
• Ease of Installation: Equipped with a locking band system, the adaptor offers a straightforward installation process. This means less hassle during setup and a more secure, consolidated fit within your chimney structure.
Installation Guidelines
Installing the KC Twin Wall to Flex Adaptor is a straightforward process when you follow the manufacturer’s instructions. Begin by positioning the adaptor inside an existing Class 1 Chimney, ensuring that it fits securely within the flue system. It is essential to maintain a minimum of 60mm clearance from any combustible materials, such as plasterboard or wood, to guarantee safety. The locking band is designed for ease of use and provides additional support by locking the adaptor components together firmly. Remember, proper installation not only enhances safety but also improves the overall performance of your appliance connections.
Addressing Common Concerns
Q: Can the adaptor be used with a woodstove or other solid fuel appliances?
A: Yes, the KC Twin Wall to Flex Adaptor Ø 100 is specifically designed to work with woodstoves, oil boilers, gas coal effect fires, and other solid fuel appliances. This versatility makes it an excellent choice for anyone looking to connect different types of heating appliances safely.
Q: What materials are used in the build of this product?
A: The adaptor is manufactured with a combination of 304 grade stainless steel for the outer layer and 316 grade stainless steel for the inner layer. This choice of materials ensures optimum durability and heat resistance. Additionally, the use of compressed rockwool as insulation maximises thermal efficiency.
Q: How important is the locking band during installation?
A: The locking band is a crucial component of the installation process. It secures the adaptor parts tightly, ensuring that the entire system remains stable and maintains the necessary clearance from combustible materials. This not only supports the structural integrity of the chimney but also contributes significantly to overall safety.
Q: Is this product compliant with industry standards?
A: Absolutely. The product has been designed in compliance with EN1856-1 standards and is HETAS Approved as well as CE marked. These certifications confirm that the adaptor meets all necessary safety and performance criteria.
Why Choose the KC Twin Wall to Flex Adaptor?
Choosing the right adaptor for your chimney system can be challenging. However, the combination of high-quality materials, robust standards compliance, and innovative design makes the KC Twin Wall to Flex Adaptor a superior choice. It has been engineered to guarantee a secure, efficient transition between twin wall systems and flexible flue liners, making it an essential component for safe and effective installations. The installation process is streamlined and user-friendly, reducing the potential for error and ensuring a secure fit every time. Furthermore, its versatile application across multiple fuel types makes it a worthwhile investment for anyone looking to enhance their heating system.
Final Thoughts
The KC Twin Wall to Flex Adaptor Ø 100 is not just another chimney accessory – it is a key piece of engineering designed to safeguard and optimise your appliance installation. With its high-grade stainless steel construction, excellent thermal insulation, and user-friendly installation process, it stands out as a reliable, high-performance component in any chimney system. Whether you are a professional installer or a homeowner looking to upgrade your heating solution, this adaptor offers the quality and safety you need. The combination of strict compliance with EN1856-1 standards and the added assurance of HETAS Approval and CE marking underline its superior quality and reliability.
For anyone requiring a robust, efficient, and secure solution for connecting twin wall systems to flexible flue liners, the KC Twin Wall to Flex Adaptor Ø 100 is the ideal choice. Its easy-to-follow installation guidelines, coupled with its versatile design, make it invaluable for a range of appliances and fuel types. Enjoy the peace of mind that comes from using a product designed to deliver peak performance and lasting safety.
Buy now or call 01670 206 999.
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