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KC - Single Wall to Twin Wall Increaser - Ø 450 - Ø 500 (60-450-002)
National Flues presents the KC Single Wall to Twin Wall Increaser Ø 450 to Ø 500, an essential adapt Read More...
National Flues presents the KC Single Wall to Twin Wall Increaser Ø 450 to Ø 500, an essential adaptor for efficient transitions between single wall and twin wall flue systems. This high-quality, HETAS Approved product, crafted from premium stainless steel, is ideal for woodstoves, gas fires, and oil/gas boilers. Whether you are upgrading your current flue system or installing a brand new one, this increaser is designed to deliver superior performance. Search for optional accessories to further optimise your heating system and ensure a perfect, compliant installation. Less...
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Out of Stock – Pre-order Now
£272.99
with free delivery
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Seamless connection from single wall to twin wall flues Constructed with durable stainless steel (304 outer, 316 inner) Suitable for a variety of fuel types including wood, oil, and gas HETAS Approved and CE marked for safety and compliance Compressed rockwool insulation for improved thermal performance Secure installation with a reliable Locking Band
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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 KC Single Wall to Twin Wall Increaser Ø 450 to Ø 500 is a versatile solution designed to connect appliance outlets to KC systems smoothly and efficiently. Ideal for use with solid fuel and gas/oil appliances such as woodstoves, gas coal effect fires, oil, and gas boilers, this increaser features a tapered design for an optimal transition from single wall to twin wall flues. Constructed with a 0.4mm thick outer skin made from 304 grade stainless steel and a 0.5mm thick inner skin made from 316 grade stainless steel, it offers excellent durability and resistance to high temperatures.
The compressed rockwool insulation ensures a density of 128kg/m3, providing reliable thermal performance. KC is HETAS Approved and CE marked, meeting EN1856-1 T600 N1 W V2 L50040 G90 and EN1856-1 T200 P1 W V2 L50040 015 standards. Installation is simplified with the use of a Locking Band, and safety is prioritized with a 90mm distance to combustibles for biomass and 15mm for low-temperature gas and oil applications.
Installation is straightforward yet requires careful adherence to safety guidelines. Begin by ensuring that your flue system complies with the required distances: maintain a 90mm gap to combustibles for biomass applications and a 15mm gap for low-temperature gas and oil systems. The KC Increaser utilises a Locking Band which secures the connection between the single wall and twin wall segments. First, clean both ends of the flues to remove any residue or debris. Next, position the increaser carefully between the flue sections, ensuring that the tapered design aligns perfectly. Once in place, fasten the Locking Band tightly to secure the increaser, confirming there is no movement. Optional accessories, such as additional sealing strips and support brackets, are available to enhance the installation further if required. Always verify manufacturer's guidelines and local regulations before commencing the installation process.
The increaser is suitable for solid fuel and gas/oil appliances such as woodstoves, gas coal effect fires, oil, and gas boilers.
The outer skin is made from 304 grade stainless steel (0.4mm thick) and the inner skin from 316 grade stainless steel (0.5mm thick), with compressed rockwool insulation.
Yes, the increaser is HETAS Approved and CE marked.
A distance of 90mm from the outside of the flue to any combustible material is required for biomass applications, while a 15mm distance is required for low-temperature gas and oil.
The increaser is secured using a Locking Band, ensuring a secure and stable installation.
Twin wall flues offer better insulation, durability, and safety by reducing condensation and maintaining optimal exhaust temperatures.
Yes, the increaser can connect single wall flues or vitreous enamel to twin wall flues, providing a smooth transition.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Tuesday, May 6th. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call.
If you need faster stove or fireplace delivery please also 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. 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 - Single Wall to Twin Wall Increaser - Ø 450 - Ø 500 buyers guide
Introduction
The KC Single Wall to Twin Wall Increaser is a versatile solution designed to seamlessly bridge different flue systems. Manufactured with precision in the UK and built using high-quality stainless steel, this adapater is an integral component for enhancing the performance and safety of your heating system. Its superior design, combined with HETAS and CE certifications, makes it an excellent choice for a wide range of applications including woodstoves, gas fires, and oil/gas boilers.
Key Features and Benefits
Robust Construction: The use of 304 grade stainless steel for the outer skin and 316 grade stainless steel for the inner skin ensures that the increaser is both durable and resistant to extreme temperatures and corrosion. The inclusion of compressed rockwool insulation not only improves thermal performance but also helps maintain a consistent temperature, reducing the risk of condensation.
Versatility: This increaser is engineered to connect single wall and twin wall flues efficiently. Whether you are working with solid fuel appliances or modern gas/oil boilers, this product meets the demands of various heating systems. Its universal design ensures compatibility across diverse installations.
Safety and Compliance: With clear HETAS Approval and CE marking, the product adheres to rigorous safety standards. This ensures that your installation not only performs optimally but also complies with the necessary UK regulations. The design incorporates safety features such as a 90mm clearance to combustibles for biomass and 15mm clearance for low-temperature systems.
Installation Guidance
Installing the KC Single Wall to Twin Wall Increaser is a straightforward process. Begin by preparing the existing flue system: clean the connection areas thoroughly and verify that all components are in good condition. The increaser’s tapered design ensures a smooth transition between flue systems, and the integrated Locking Band secures the connection, significantly reducing the risk of movement and potential leaks. Should you require additional guidance or wish to customise your setup further, consider optional accessories like extra sealing components, support brackets, or detailed flashings. These accessories are available to help you achieve a refined and secure installation.
Overcoming Common Objections
Some users may be concerned about the compatibility of this increaser with older or custom-built heating systems. However, the design has been tested extensively to ensure it integrates seamlessly with both traditional and modern flue systems. Additionally, while the installation is straightforward, professional advice is always recommended if you are unfamiliar with flue system standards. Another common query revolves around safety – rest assured, with its HETAS Approval and CE marking, this product meets all necessary safety requirements and is designed to offer long-term reliability.
The Role of Optional Accessories
To enhance your heating system further, optional accessories are available. Accessories such as extra sealing tapes, adjustable support brackets, and installation kits can significantly improve the performance and installation quality of the increaser. Users are encouraged to explore these options to tailor the installation to their specific requirements. By investing in the right accessories, you ensure improved performance, enhanced safety, and a more customised solution that fits your unique setup.
Why Choose National Flues?
At National Flues, we pride ourselves on delivering high-quality, reliable, and compliant solutions for your heating needs across the UK. With competitive pricing, robust after-sales support, and nationwide delivery, our products offer unparalleled value. The KC Single Wall to Twin Wall Increaser epitomises our commitment to quality and innovation, providing an indispensable component for efficient heating installations.
Final Thoughts
Investing in the right components for your heating system is crucial not only for optimal performance but also for ensuring safety and longevity. The KC Single Wall to Twin Wall Increaser stands out as a cost-effective, reliable solution. It integrates seamlessly with a broad range of heating appliances, adheres to stringent safety standards, and can be further optimised with optional accessories. For any customer seeking a dependable, high-quality flue system component, this increaser is a stellar choice. Its design, performance, and ease of installation are a testament to its engineering excellence. Choose reliability, choose performance, and ensure the longevity of your heating system with the KC Single Wall to Twin Wall Increaser. Add to your cart now or call 01670 206 999.
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