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Discover the exceptional quality of the TWPro MB chimney flue from National Flues. Engineered for both solid fuel and gas/oil appliances, this high-performance flue pipe is ideal for wood stoves, gas coal effect fires, oil boilers, and gas boilers. Combining robust stainless steel construction with high-density insulation and an integrated test point, the TWPro MB is a reliable solution for safeguarding your home while maintaining efficient heat transit. Perfect for both professional installers and DIY enthusiasts, this chimney system represents the pinnacle of modern flue technology, safety, and durability.
In Stock
£103.99
with free delivery
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Integrated test point and cap for safe draft/gas sampling Robust dual-layer construction: 304 stainless steel outer with high-temperature black coating and 316 stainless steel inner Fully insulated with high-density compressed rockwool (200kg/m³) for superior heat resistance HETAS approved and CE marked for safety and compliance Requires only a 50mm clearance from combustibles for secure installation
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Please Note: All dimensions refer to the internal diameter of flues.
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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 TWPro MB - Testing Length 500mm - Ø 125 is a high-quality chimney flue component designed for various solid fuel and gas/oil appliances, including wood stoves, gas coal effect fires, oil boilers, and gas boilers. Constructed with a robust outer skin of 304 stainless steel coated in a high-temperature black finish, it boasts an inner skin made of 316-grade stainless steel. The unit is fully insulated with compressed rockwool at a density of 200kg/m³, ensuring superior heat resistance and performance.
With a distance requirement of 50mm from combustibles, this product is HETAS approved and CE marked, guaranteeing compliance with safety standards. Secure installation is achieved through a provided locking band.
SKU: 37-125-019
Technical Specifications
SKU
37-125-019
Product Name
TWPro MB - Testing Length 500mm - u00d8 125
Testing Length
500mm
Diameter
125mm
Inner Material
316L Stainless Steel (0.40mm thick)
Outer Material
304 Stainless Steel with high-temperature black coating (0.40mm thick)
Insulation
Compressed Rockwool, 200kg/mu00b3
Approvals
HETAS, CE
Distance To Combustibles
50mm
Installation Feature
Provided locking band for secure attachment
The TWPro MB chimney flue is designed with straightforward installation in mind. Begin by ensuring a minimum clearance of 50mm from any combustible materials, such as woodwork or plasterboard. The product comes with a locking band that secures the assembly, providing a reliable, long-lasting connection between flue sections. Always confirm that your site meets the recommended clearance requirements before installation. Optional accessories such as additional sealing kits or extended flue adapters are available to further streamline the installation process and enhance overall performance. Follow all manufacturer guidelines and local regulations to ensure a safe and compliant setup.
The TWPro MB is suitable for solid fuel and gas/oil appliances such as wood stoves, gas coal effect fires, oil boilers, and gas boilers.
The TWPro MB features an outer skin made from 304 stainless steel with a high-temperature black finish and an inner skin constructed from 316-grade stainless steel.
The TWPro MB is insulated with compressed rockwool, offering a density of 200kg/m³.
Yes, the TWPro MB is HETAS approved and CE marked, ensuring it meets the necessary safety guidelines.
A distance of 50mm from the outside of the flue to any combustible material (e.g., wood, plasterboard) should be maintained.
The TWPro MB chimney parts are secured using a provided locking band, ensuring a secure fit for safe operation.
The integrated test point and cap allow safe entry into the flue for testing gas and draft samples, ensuring the system operates correctly.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Monday, May 19th. 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.
When choosing a chimney flue, understanding every detail of how it works is crucial for safe and efficient heating. The TWPro MB – Testing Length 500mm – Ø 125 by National Flues stands out from the competition with its robust construction, high safety standards, and thoughtful design. Whether you are a homeowner upgrading your heating system or a professional installer looking for top-quality components, this guide explains everything you need to know.
Product Overview
The TWPro MB chimney flue is engineered with an integrated test point and cap, facilitating easy and safe gas and draft sampling. The dual-layer construction features an outer skin made of 304 stainless steel with a high-temperature black finish and an inner skin crafted from 316L stainless steel. This design not only provides durability but also ensures excellent resistance to heat and corrosion. Its fully insulated structure using compressed rockwool (200kg/m³) offers enhanced thermal retention, making it ideal for various appliances including wood stoves, gas boilers, and oil boilers.
Safety and Compliance
Safety is paramount when installing any flue system. The TWPro MB is both HETAS approved and CE marked, which means it meets the highest industry safety standards. A key advantage of this product is the minimal clearance required from combustibles – just 50mm – allowing for flexible installation in tight spaces without compromising safety. This ensures that homeowners and installers can achieve a secure setup while still enjoying efficient performance.
Construction and Materials
One of the distinguishing features of the TWPro MB is its robust construction:
• Dual-layer Stainless Steel: The combination of 304 stainless steel on the outside and 316L stainless steel on the inside provides maximum durability and resistance to adverse weather conditions and high temperatures.
• High-Density Insulation: The insulation package consists of compressed rockwool, which not only maintains thermal efficiency but also contributes to overall safety by preventing heat transfer to adjacent materials.
These materials are chosen for their proven performance in challenging environments, thus ensuring that your investment in a TWPro MB results in long-lasting reliability.
Installation Best Practices
The installation of the TWPro MB is designed to be straightforward. Start by verifying that the installation area complies with the 50mm clearance requirement. Use the provided locking band to secure the flue sections firmly, ensuring a leak-proof joint. For installations that require further customisation, optional accessories are available. These include additional sealing kits and support structures that can optimise performance and reduce installation time. Always refer to the detailed manufacturer’s instructions and consider professional installation advice if needed.
Enhancing Your Installation
Alongside the flue itself, consider exploring our range of optional accessories which can further improve installation and overall performance. Accessories such as chimney caps, support brackets, and bespoke sealing kits can be sourced separately to complement your TWPro MB system perfectly. These additions are designed to maximise heat retention, secure against the elements, and add an extra layer of safety to your heating system.
Addressing Common Objections
Is the TWPro MB suitable for my heating appliance? Yes, it is designed to work with a wide range of heating appliances, including wood stoves, gas boilers, and oil boilers. The integrated test point makes upkeeping system performance straightforward.
What about long-term durability? The combination of high-grade stainless steel with premium insulation ensures that the TWPro MB provides reliable performance for many years, even under demanding conditions.
How complicated is installation? The TWPro MB is engineered for ease of installation. Its minimal clearance requirement and the inclusion of a locking band mean that installations are secure and relatively straightforward, whether carried out by a professional or an experienced DIY enthusiast.
Final Considerations
Investing in the TWPro MB means choosing a high-performance, safe, and durable chimney flue system that is designed to meet strict regulatory standards. With its robust construction, efficient insulation, and integrated safety features, the TWPro MB is a sound investment for anyone needing a reliable solution for chimney installations. Be sure to consider the optional accessories available—they can offer tailored solutions to enhance and simplify your installation process, ensuring compatibility with your unique requirements.
When it comes to secure, high-performing chimney installations, trust in the quality and expertise of National Flues. With every detail meticulously engineered for safety, performance, and longevity, the TWPro MB is your perfect choice for a refined, worry-free heating system. Add to cart or call 01670 206 999.
Secure your TWPro MB chimney flue today and enjoy a streamlined, safe installation that performs exceptionally from day one.
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