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Discover the premium Increasing MI-FLEX Adaptor from National Flues – a superior solution designed to bridge the gap between a rigid single-wall flue and a MI-FLEX Multi Fuel flexible flue liner. Manufactured from 316L stainless steel, this adaptor guarantees a secure Ø 150 to Ø 175 conversion, delivering outstanding durability and safety. Its high temperature resistance and compatibility with wood, oil, gas, and smokeless coal make it an ideal choice for diverse heating systems. Explore this state-of-the-art flue accessory and experience the National Flues commitment to quality and reliable service.
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£38.99
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At a Glance
Constructed from robust 0.6mm 316L stainless steel Designed to transition flue sizes from Ø 150mm to Ø 175mm Ensures a secure, gas-tight seal for safe operation Withstands high temperatures up to 600°C Compliant with Building Regulations Document J and HETAS/CE standards Compatible with a range of fuels including wood, oil, gas, and smokeless coal
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“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
The Increasing MI-FLEX Adaptor Ø 150 to Ø 175 is an essential component specifically engineered to create a seamless connection from a single wall connecting flue system to MI-FLEX Multi Fuel flexible flue liner. Made from robust 0.6mm 316 stainless steel, this adaptor transitions smoothly, increasing diameter by 25mm, ensuring a gas-tight seal. Designed for use in fully enclosed masonry chimneys as per Building Regulations Document J, it's suitable for high-temperature applications (up to 600°C) and various fuels—wood, smokeless coal, gas, and oil.
Installation requires precise securing using fire cement, ceramic rope, tape, or high-temperature sealant for optimal performance. Maintenance is straightforward, though professional sweeping is recommended, especially for solid fuel applications, with bi-annual cleans advised to maintain chimney health.
SKU: 20-150-MR
Technical Specifications
Material
316L Stainless Steel
Thickness
0.6mm
Diameter Conversion
u00d8 150mm to u00d8 175mm
Maximum Operating Temperature
600u00b0C
Fuel Compatibility
Wood, Oil, Gas, Smokeless Coal
Standards
HETAS / CE, Building Regulations Document J
Ensure that the adaptor is installed within a fully enclosed masonry chimney in accordance with Building Regulations Document J. Use appropriate high-temperature adhesives such as fire cement, ceramic rope, tape, or high-temperature sealant to secure the adaptor firmly in place. It is essential to verify that no portion of the flexible flue liner is exposed externally, as this could compromise the safety and performance of the system. Regular maintenance is advised; a professional chimney sweep should inspect and clean the system bi-annually, especially if the installation serves a solid fuel appliance. Adhering to these guidelines will help ensure a long-lasting, efficient installation.
The Increasing MI-FLEX Adaptor is used to connect a rigid single-wall flue system to the MI-FLEX Multi Fuel flexible flue liner, increasing the flue size by 25mm.
The adaptor is constructed from 0.6mm thick 316 stainless steel, ensuring durability and high resistance to corrosion.
Yes, the Increasing MI-FLEX Adaptor is suitable for use with wood (with less than 20% moisture), smokeless coal, gas, and oil appliances.
The adaptor should be installed fully enclosed within a masonry chimney, with no flexible flue visible. It's essential to secure it using fire cement, ceramic rope, tape, or high-temperature sealant.
Chimneys connected to solid fuel appliances should be swept at least twice a year. For other fuels, an annual inspection and clean are recommended to ensure proper maintenance and safety.
Yes, Building Regulations Document J states that flexible flue liners must be completely enclosed inside a masonry structure. Enclosures like timber or plasterboard boxing are not acceptable.
Sweeping should be conducted by a competent person. For solid fuel applications, it's advisable to use HETAS registered chimney sweeps.
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.
The Increasing MI-FLEX Adaptor is a crucial component for anyone seeking to upgrade or install a modern, efficient flue system. Engineered from high-grade 316L stainless steel and designed to create a flawless transition from a Ø 150mm singular wall connecting flue to a Ø 175mm MI-FLEX Multi Fuel flexible flue liner, this adaptor ensures exceptional performance and safety. In today’s market, where compliance with Building Regulations and industry standards is paramount, choosing the right accessory is essential. This guide is designed to provide you with an in-depth understanding of the product, its benefits, and how it meets the evolving demands of modern heating installations.
Key Features and Benefits
Superior Material and Build Quality
Crafted from robust 0.6mm 316L stainless steel, the adaptor is built to last. Its durable construction makes it resistant to corrosion and high temperatures up to 600°C, ensuring that it maintains both its integrity and functionality over an extended period. This reliability means fewer replacement cycles, saving you time and money in the long run.
Optimised Flue Transition
The adaptor is meticulously engineered to facilitate a smooth transition between different flue diameters. With an increase from Ø 150mm to Ø 175mm, it guarantees a gas-tight seal that is vital for maintaining system integrity and preventing leaks. This precise conversion is crucial for installations requiring strict adherence to safety standards, ensuring that your flue system operates at peak performance.
Enhanced Safety Through Compliance
Compliance with both Building Regulations Document J and HETAS / CE certifications is non-negotiable in modern installations. The Increasing MI-FLEX Adaptor meets these rigorous standards, reassuring you that your installation is both safe and efficient. Its ability to secure multi-fuel applications, ranging from wood to smokeless coal, adds an extra layer of versatility without compromising on safety.
Multi-Fuel Compatibility
Whether your heating appliance uses wood, oil, gas, or smokeless coal, this adaptor is designed to handle it all. This flexibility makes it an excellent choice for various installations, providing a universal solution that adapts to your specific needs. It not only supports the functionality of your heating system but also ensures that the appliance operates within the safety guidelines set for each fuel type.
Installation Guidelines
Preparing for Installation
Before installing the adaptor, ensure that your flue system is correctly prepared. It is essential to have a fully enclosed masonry chimney, where the flexible flue liner is completely hidden from view. Any exposure could potentially compromise the adaptor’s performance and the overall safety of the installation. Gather the necessary tools and materials, including fire cement, ceramic rope, high-temperature tape, or sealant, to secure the adaptor firmly in place.
Step-by-Step Installation
1. Positioning: Place the adaptor correctly between the rigid single-wall flue and the MI-FLEX liner, ensuring that the alignment is precise to maintain a smooth transition.
2. Securing: Apply the chosen high-temperature adhesive to secure the adaptor. This step is critical as it establishes the gas-tight seal that is pivotal for the safe operation of your flue system.
3. Inspection: Once installed, perform a thorough inspection to confirm that there are no visible gaps or weak points. This check is crucial for the longevity and efficiency of the system.
Post-Installation Maintenance and Inspection
Regular maintenance is key to ensuring long-term performance. It is advisable to conduct a professional chimney sweep at least twice a year if the system is connected to a solid fuel appliance. This inspection will help identify any potential issues early on, ensuring that your installation remains safe and compliant with current regulations.
Addressing Common Objections
Concern About Durability
Potential customers might worry about the longevity of a flue accessory. However, thanks to its construction from premium 316L stainless steel, the Increasing MI-FLEX Adaptor is built to withstand the harshest conditions, including exposure to high temperatures and corrosive substances. This guarantees a durable solution that will serve your installation reliably.
Installation Complexity
Some may be concerned about the complexity of the installation process. The adaptor is designed with ease of installation in mind; clear guidelines and the use of standard high-temperature adhesives make the process straightforward. Moreover, professional installers familiar with masonry chimneys and flue systems can complete the installation swiftly and efficiently.
Compatibility Issues
A frequent concern is whether the adaptor will seamlessly integrate with various fuel types and existing systems. The Increasing MI-FLEX Adaptor is specifically engineered to work with multiple fuels—the perfect solution for a range of installations. Its compatibility with wood, oil, gas, and smokeless coal ensures that it meets diverse heating requirements without compromising on safety or performance.
Final Thoughts
The Increasing MI-FLEX Adaptor is not simply an accessory; it is a significant enhancement to your flue system that offers improved performance, safety, and durability. With benefits that include a secure gas-tight seal, multi-fuel compatibility, and compliance with stringent industry standards, it represents a smart investment for any modern heating installation. Its benefits extend well beyond the immediate functionality, promising long-term savings and peace of mind for the user.
Every aspect of this adaptor has been designed with the end user in mind; from its robust material to its flawless design, it is clear that quality and precision are at the forefront of its development. If you are looking to upgrade your flue system with a reliable, high-performance adaptor that meets both regulatory and practical demands, then the Increasing MI-FLEX Adaptor is the ideal solution for you.
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