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TWPro MB - Single Wall to Twin Wall Increaser - Ø 150-175mm (37-150-002)
National Flues presents the TWPro MB Single Wall to Twin Wall Increaser, a premium solution tailored for superior flue connections. Engineered for a wide range of heating appliances including wood stoves, gas fires, and oil boilers, this adaptor facilitates a smooth transition between flue systems. With robust 316L and 304 stainless steel construction, HETAS-approved safety, and a design that guarantees thermal efficiency, National Flues assures a reliable performance. Experience seamless integration and impeccable quality with this indispensable component.
In Stock
£38.99
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
High-quality 316L inner and 304 outer stainless steel construction Fully welded, robust 0.4mm thickness for durability Tapered design expands by 25mm for a seamless transition HETAS approved and CE marked for safety compliance Insulated with compressed rockwool (200kg/m³) ensuring a 50mm clearance from combustibles Versatile for wood, gas, oil, and low sulphur coal appliances
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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 TWPro MB Single Wall to Twin Wall Increaser (Ø 150-175mm) is an essential component for connecting flue systems across diverse heating appliances, including wood stoves, gas coal effect fires, oil boilers, and more. Engineered for superior performance, this universal adaptor ensures a smooth transition from single wall to twin wall flue systems, expanding by 25mm with its tapered design. The outer skin, constructed from robust 304 stainless steel and finished in a high-temperature black coating, offers both durability and aesthetic appeal.
The inner skin features 316 grade stainless steel for enhanced corrosion resistance, while the 0.4mm thickness and fully welded seams guarantee longevity and reliability. Insulated with compressed rockwool at a density of 200kg/m3, it maintains a safe 50mm distance to combustible materials, ensuring secure installation. Approved by HETAS and CE marked, it meets rigorous standards of excellence with designations EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20.
Installation is straightforward, with parts secured using a supplied locking band to maintain the necessary 50mm clearance from combustible surfaces.
SKU: 37-150-002
SKU
37-150-002
Item
TWPro MB - Single Wall to Twin Wall Increaser - u00d8 150-175mm
Designation:
EN1856-1 T600 N1 W V2 L50040 G50
EN1856-1 T200 P1 W V2 L50040 020
System:
TWPro Black
Inner Material:
316L Stainless Steel - 0.40mm thick
Outer Material:
304 Stainless Steel - 0.40mm thick - High Temperature Black Coated
Fuels:
Wood, Oil, Gas, Low sulpher coal
Approvals:
HETAS / CE
Distance To Combustibles:
50mm
1. Before installation, ensure that the flue system components and the surrounding area meet all safety requirements, especially the necessary 50mm clearance from combustible materials.
2. Attach the TWPro MB Increaser to the existing single wall or vitreous enamel pipe and align it with the twin wall flue system. The tapered design should allow for an easy, secure fit.
3. Secure the connection using the supplied locking band, ensuring that all joints are tight and correctly positioned to prevent any movement.
4. Once installed, double-check the entire assembly to ensure that all components are firmly in place and that the required safety clearances are maintained.
5. It is advised to consult a certified installer if there is any uncertainty during the installation process.
Warning: Always refer to the manufacturer’s guidelines and safety instructions before commencement.
The TWPro MB Increaser is suitable for use with solid fuel appliances such as wood stoves, gas coal effect fires, oil boilers, and gas boilers.
The increaser features an outer skin made of 304 stainless steel with a high-temperature black finish and an inner skin of 316 grade stainless steel for superior corrosion resistance. Both skins are 0.4mm thick.
Yes, the TWPro MB Increaser is HETAS approved and also CE marked.
The TWPro MB Increaser expands by 25mm, enabling a smooth transition from single wall to twin wall flue systems.
A minimum distance of 50mm should be maintained from the outside of the flue to any combustible material, such as wood or plasterboard.
Installation is simple; the TWPro Twin Wall Insulated Chimney parts are secured using a supplied locking band. Ensure a 50mm clearance from combustible materials.
The TWPro MB Increaser meets the following designations: EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Wednesday, May 21st. 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 TWPro MB - Single Wall to Twin Wall Increaser - Ø 150-175mm buyers guide
Introduction
The TWPro MB Single Wall to Twin Wall Increaser is an essential component designed to bridge the gap between single wall and twin wall flue systems. Manufactured to the highest standards, this product is ideal for a range of heating appliances including wood stoves, oil boilers, and gas fires. National Flues has engineered this adaptor to provide a safe, efficient, and reliable solution for those looking to upgrade or maintain their flue systems. In this comprehensive buyer's guide, we will walk you through the features, benefits, installation procedure, and maintenance tips, ensuring you have all the information needed to make an informed decision.
Key Features and Benefits
The TWPro MB Increaser is distinguished by its dual-layer construction. The inner layer is made from 316L stainless steel, known for its exceptional corrosion resistance, while the outer layer is crafted from 304 stainless steel and finished with a high-temperature black coating. This combination not only guarantees durability but also enhances the aesthetic appeal. Furthermore, the tapered design of the adapter allows it to expand by 25mm, ensuring a seamless fit between differing flue diameters. Key benefits include:
- Enhanced safety through a consistent 50mm clearance from combustibles
- Optimised thermal performance due to the integrated compressed rockwool insulation
- Versatility in application, supporting different fuel types like wood, oil, gas, and low sulphur coal
- Reliability validated by HETAS approval and CE marking
Installation Guidance
Proper installation is paramount when it comes to flue systems. Begin by measuring your current setup to ensure that the 50mm safety clearance from combustible materials is maintained at all times. The TWPro MB Increaser is designed to be integrated effortlessly with both single wall and twin wall systems. Installation involves aligning the increaser with the existing conduit, securing it in place with the provided locking band, and performing a final inspection of the assembly. Adherence to the manufacturer's installation guidelines is essential to maintain both system performance and safety. Should you require further assistance, it is advisable to consult with a certified installer who can guarantee that your installation complies with all relevant safety standards.
Safety Considerations and Frequently Asked Questions
Safety is a critical factor in any flue system installation. The TWPro MB Increaser is engineered to maintain a minimum 50mm distance from combustible materials, thereby minimising the risk of fire hazards. Frequently asked questions include inquiries related to the types of appliances compatible with the increaser, the materials used in its construction, and the specifics of its integrated insulation. Answers to these common queries underscore the product’s versatility and robust design. Moreover, the certifications of HETAS and CE provide additional assurance of its safety performance in diverse operating environments. Always remember: safety should never be compromised, and proper installation is your first line of defence against potential risks.
Maintenance and Longevity
The longevity of your flue system greatly depends on regular maintenance and the intrinsic durability of its components. The TWPro MB Increaser is built to last, with materials designed to withstand high temperatures and corrosive environments. Routine inspections after installation can help identify any issues such as loose fittings or signs of wear. Cleaning should be performed in accordance with the manufacturer's recommendations to preserve the integrity of the stainless steel surfaces and the insulation material. By investing in quality components like the TWPro MB Increaser, you are ensuring a sustained and efficient performance that minimises future repair costs and system downtimes.
Final Thoughts and Decision Making
In summary, the TWPro MB Single Wall to Twin Wall Increaser by National Flues is an exemplary product that combines robust construction, versatile application, and rigorous safety standards. Whether you are upgrading an existing flue system or installing a new one, this adaptor offers a reliable, high-performance solution that is both HETAS and CE approved. It merges practicality with aesthetic appeal, making it a smart investment for homeowners and professionals alike. The detailed construction, precise engineering, and comprehensive safety features mark this product as an industry-leading choice. The excellent performance and durability ensure that you are well-equipped to handle the demands of modern heating appliances. Investing in this increaser means investing in peace of mind, knowing that every element of your flue system is designed for ultimate efficiency and safety. Take the next step in elevating your flue system performance today.
Enhance your installation process by choosing a product that is synonymous with quality, reliability, and innovation. With thorough engineering and adherence to safety standards, the TWPro MB Increaser stands out as a premium solution in the market. When upgrading or installing your flue system, ensure that every component you select contributes to a safe, efficient, and long-lasting operation. Your choice of quality materials, combined with expert installation, is crucial to achieving a system that not only complies with regulatory standards but also delivers peak performance over its lifetime.
Buy now or call 01670 206 999.
Order now for reliable, HETAS-approved performance that lasts.
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