We use cookies to ensure a smooth, secure, and ever-improving experience on our website. By continuing to browse, you agree to our use of cookies as detailed in our Cookie Policy. Enjoy your visit and let us now if you need any help!
Cookie Preferences
We use different types of cookies for various purposes. Please select which you allow:
Single Wall to Twin Wall Increaser Ø 150 - Ø 175 (2-150-002)
National Flues presents the Single Wall to Twin Wall Increaser Ø 150 - Ø 175, a cutting-edge solution designed for flawless connection between single wall and twin wall flue systems. Ideal for solid fuel, gas, and oil appliances, this universal adaptor ensures optimal performance and safety. Combining the durability of 304 and 316 stainless steel with superior rockwool insulation, this product is engineered for efficiency, longevity, and compliance with stringent UK safety standards. Discover a reliable solution for your chimney and flue system projects, whether for woodstoves, coal-effect fires, or oil and gas boilers.
Hover to Zoom / Click for Gallery
In Stock
£25.99
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Universal adaptor that connects single wall flue pipes to twin wall systems
Constructed with 304 stainless steel outer and 316 stainless steel inner layers for durability
0.4mm thick metal construction provides both reliability and safety
Insulated with high density compressed rockwool (200kg/m3) for excellent thermal resistance
HETAS approved, CE marked and compliant with EN1856-1 standards
Maintains mandatory 50mm clearance from combustible materials
×
Email Product
Enter your email address to send the product details:
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 Single Wall to Twin Wall Increaser Ø 150 - Ø 175 is a universal adaptor designed to connect appliance outlets to TWPro flue systems. It ensures a seamless transition from a single wall to twin wall with an effective 25 mm increase. This increaser is suitable for solid fuel and gas/oil appliances, including woodstoves, gas coal effect fires, oil and gas boilers, and any solid fuel devices.
Constructed with a 304 grade stainless steel outer and 316 grade stainless steel inner, both layers are fully welded and 0.4mm thick for maximum durability. Insulated with compressed rockwool at a density of 200kg/m3, it provides exceptional thermal resistance. The TWPro is HETAS approved, CE marked, and meets EN1856-1 standards.
Installation is straightforward with a Locking Band, and a safe distance of 50mm from combustibles is mandated.
SKU: 2-150-002
Technical Specifications
Dimensions
Ø 150 - Ø 175
SKU
2-150-002
Inner Material
316L Stainless Steel (0.40mm thick)
Outer Material
304 Stainless Steel (0.40mm thick)
Insulation
Compressed Rockwool, 200kg/m3
Certifications
HETAS, CE, EN1856-1
Safe Distance
50mm from combustibles
Installation Method
Locking Band provided
• Begin by verifying that your appliance outlet and flue system meet the dimensional requirements (Ø 150 - Ø 175).
• Secure the Single Wall to Twin Wall Increaser onto the appliance outlet using the provided Locking Band to ensure a tight and stable connection.
• Confirm that the installation maintains a minimum 50mm clearance from any combustible materials such as wood framing or plasterboard.
• If connecting to accessory components such as flue caps or additional insulation systems, ensure that each accessory is compatible with the TWPro flue system.
• It is advised to consult a professional if any uncertainty exists regarding the installation process.
The increaser is suitable for solid fuel and gas/oil appliances like woodstoves, gas coal effect fires, and oil and gas boilers.
The outer layer is made of 304 grade stainless steel and the inner layer is made of 316 grade stainless steel, both of which are 0.4mm thick.
The increaser is insulated with compressed rockwool that has a density of 200kg/m3, providing excellent thermal resistance.
Yes, the product is HETAS approved and CE marked, compliant with EN1856-1 standards.
A 50mm distance from any combustible materials (like wood or plasterboard) is required.
The increaser is easily installed by securing it with a Locking Band to ensure a tight, stable connection.
The designation number (EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20) indicates compliance with specific performance and safety standards for chimney products.
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 Single Wall to Twin Wall Increaser Ø 150 - Ø 175 buyers guide
Comprehensive Buyers Guide for the Single Wall to Twin Wall Increaser Ø 150 - Ø 175
The Single Wall to Twin Wall Increaser by National Flues is a key component for ensuring that your flue system operates efficiently and safely. This comprehensive guide will provide you with in-depth insight into the product, its features, and tips for its installation. In addition, we will discuss optional accessories available to enhance your installation, ensuring you receive maximum performance in your flue system.
Understanding the Product
This universal adaptor is specifically designed to bridge the gap between single wall and twin wall flue systems. With its dimensions specifically tailored to fit Ø 150 - Ø 175 applications, it provides an easy-to-install solution that guarantees a smooth transition. The adaptor is built with high-quality 304 stainless steel on the outside and 316 stainless steel on the inside, both layers being 0.4mm thick. Such construction ensures longevity and excellent resistance to corrosion in harsh conditions.
Safety and Compliance
One of the most important factors to consider in any flue system installation is safety. This product not only meets but exceeds industry standards. It is HETAS approved and CE marked, complying with the EN1856-1 standard. The incorporation of compressed rockwool insulation with a density of 200kg/m3 further enhances its thermal resistance, reducing heat loss while maintaining a safe operational temperature. The required clearance of 50mm from combustible materials is strictly observed, enhancing onsite safety during installation and operation.
Key Features and Their Benefits
Seamless Compatibility: The adaptor is engineered to allow a flawless transition between single wall and twin wall systems. This means fewer complications during installation and optimal performance post-installation.
Robust Construction: Utilizing premium materials such as 304 and 316 grade stainless steel ensures that the product stands up to the demands of regular use, offering a long service life while withstanding environmental challenges.
Enhanced Thermal Efficiency: The compressed rockwool insulation acts as a barrier against heat loss, ensuring that your flue system remains efficient in retaining the necessary thermal energy, thereby boosting overall system performance.
Regulatory Assurance: With certifications like HETAS and CE, you can have confidence that the adapter meets the highest UK safety and quality standards. This is particularly important when installing systems for appliances that handle various fuel types including wood, oil, and gas.
Addressing Common Questions and Objections
Is the product compatible with a variety of fuel types?
Yes, the Single Wall to Twin Wall Increaser is suitable for solid fuels such as wood and coal, as well as for oil and gas boilers. Its versatility makes it a valuable component for a wide range of applications.
How difficult is the installation process?
Installation is straightforward, thanks to the easy-to-use Locking Band provided. Just ensure that the adaptor is secured properly and that you maintain the required 50mm clearance from any combustible materials. Should any questions arise during installation, consulting a professional is always a wise decision.
What optional accessories should I consider?
While the Single Wall to Twin Wall Increaser is an excellent stand-alone solution, consider complementing it with additional accessories such as flue caps, extension rings, or extra insulation products that are compatible with the TWPro system. These accessories can further enhance the system's efficiency and overall safety.
Practical Installation Tips
Thoroughly Inspect All Components: Before beginning the installation, ensure that all parts, including optional accessories, are present and undamaged. This can prevent issues during setup.
Follow the Clearance Guidelines: Adhering to the 50mm minimum clearance rule is paramount for safety. Measure twice, install once.
Secure the Connection: Use the provided Locking Band to ensure that the connection between your appliance outlet and the Twin Wall flue system is secure and stable. A well-secured adaptor prevents shifting and potential leaks.
Review Certification Details: Always verify that your installation meets local safety regulations, particularly if you're incorporating any additional accessories. This ensures that your system remains compliant with UK flue standards.
Conclusion
The Single Wall to Twin Wall Increaser Ø 150 - Ø 175 is a top choice for those seeking an efficient, safe, and durable flue transition solution. It combines advanced materials, thoughtful design, and compliance with safety standards to deliver a product that stands out in the marketplace. Knowing that it can integrate seamlessly with a variety of optional accessories further enhances its value and allows you to create the ideal flue system setup for your specific needs. The guidance provided here aims to address all typical concerns and help you make an informed decision, whether you are upgrading an existing system or installing a new one.
With solid construction, impressive thermal resilience, and rigorous safety certifications, this adaptor is designed with the end-user in mind. Its ease of installation and reliability make it an indispensable component in modern flue systems. No detail is too small when safety and efficiency are paramount, and National Flues ensures that every product meets these expectations.
Enhance your flue system today with a product that combines quality, reliability, and performance. Buy now or call 01670 206 999.
Compatible and other products that may be of interest...
