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Top Insert Sleeve - Ø 150 (20-150-PS)
For homeowners and professionals in search of high-quality chimney accessories, the Top Insert Sleeve Ø 150 from National Flues is a key component in ensuring a secure and efficient chimney installation. This essential chimney insert, designed for MI-FLEX systems, is crafted in natural stainless steel and meets rigorous UK safety standards, including Building Regulations Document J. Ideal for use with wood, coal, gas, and oil appliances, this robust accessory is synonymous with reliability, durability, and style, making it a top choice for modern chimney solutions.
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In Stock
£12.99
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Secure fit for flexible chimney liners
Compliant with Building Regulations Document J
Suitable for wood, oil, gas, and smokeless coal appliances
Withstands temperatures up to 600°C (T600-rated)
Constructed from durable 316L stainless steel
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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.
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“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
The Top Insert Sleeve Ø 150 is an essential component in the MI-FLEX range of chimney accessories. Specifically designed for use with MI-FLEX 316 and 904 flexible flue liners, this sleeve ensures a secure and stable fit at the top of your chimney. The product complies with Building Regulations Document J, requiring that flexible flue liners be enclosed within masonry chimneys, and supports appliances with temperatures up to 600°C (T600 designation).
Suitable for use with wood (less than 20% moisture), smokeless coal, gas, and oil appliances, the sleeve provides a reliable, durable, and weatherproof solution. When used in conjunction with the Top Plate and Top Clamp, it effectively distributes the vertical weight of the flue liner, maintaining the integrity of the chimney system. Easy to maintain, the system should be swept at least twice a year to ensure ongoing efficiency and safety.
SKU: 20-150-PS
Technical Specifications
SKU
20-150-PS
Model
Top Insert Sleeve - u00d8 150
Material
316L Stainless Steel
Designation
BSEN 1856-2 T600 N1 W V2 L50012 G
System
MI-FLEX Accessories MF20
Temperature Rating
Up to 600u00b0C (T600)
Fuel Compatibility
Wood, Oil, Gas, Smokeless coal
Compliance
HETAS / CE & Building Regulations Document J
Before proceeding with the installation, ensure that your masonry chimney is both weatherproof and structurally sound. Clean the chimney thoroughly and inspect for any cracks or deteriorations. Install the flexible flue liner into the Top Insert Sleeve Ø 150, ensuring it fits snugly. For optimal performance, always use the Top Plate and Top Clamp in conjunction to evenly distribute the weight of the flue liner. It is essential to have your chimney system swept by a competent professional at least twice a year—once at the end of the heating season and again at the beginning—to maintain safe operation. Remember, no harsh chemicals or steel brushes should be used during cleaning to avoid damage.
The Top Insert Sleeve Ø 150 is used to maintain a secure fit for flexible chimney liners, ensuring that the weight of the flue liner is properly supported at the top of the chimney stack.
Yes, the Top Insert Sleeve Ø 150 is suitable for use on appliances up to 600°C, making it ideal for a variety of fuel types including wood, smokeless coal, gas, and oil.
Absolutely, the product complies with Building Regulations Document J, which mandates that flexible flue liners must be installed within masonry chimneys.
The system should be swept by a competent person at least twice a year, once at the end of the heating season and again at the start. This ensures that any deposits or blockages are cleared for efficient operation.
No, under no circumstances should chemical cleaners or mild steel tools be used. It is recommended to use appropriate tools and techniques provided by certified professionals.
Yes, the Top Insert Sleeve Ø 150 can be used with wood (under 20% moisture), smokeless coal, gas, and oil appliances.
Before installation, ensure your chimney is fully weatherproof and of sound construction. Any chimney pots should be in good condition without cracks, and appropriate flaunching should be made at the top of the stack.
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 Top Insert Sleeve - Ø 150 buyers guide
Comprehensive Buyers Guide for the Top Insert Sleeve Ø 150
When it comes to ensuring the flawless operation of your chimney, every component matters. The Top Insert Sleeve Ø 150 is not just another accessory—it’s an integral part of a secure and efficient chimney liner system. In this guide, we will walk you through the features, benefits, and installation requirements of this product, helping you to make an informed decision.
Understanding the Role of the Top Insert Sleeve
The Top Insert Sleeve Ø 150 is designed to work with MI-FLEX 316 and 904 flexible flue liners, supporting the upper section of your chimney system. This component plays a critical role in stabilising the flue liner by providing a secure connection point, which ensures that the weight of the liner is evenly distributed. This is particularly important in masonry chimneys, where safety and durability are paramount.
Key Features and Benefits
One of the standout features of the Top Insert Sleeve Ø 150 is its robust construction from 316L stainless steel. This material is renowned for its corrosion resistance and longevity, ensuring that your chimney remains reliable over the years. The sleeve’s design complies with the stringent requirements of Building Regulations Document J, confirming its suitability for use in UK homes. Additionally, it supports high temperatures, up to 600°C, which makes it ideal for various fuel types including wood, oil, gas, and smokeless coal.
Why This Matters:
• Safety and Compliance: By adhering to strict building and safety standards, the product mitigates the risks associated with improper chimney installations.
• Versatility: Its compatibility with multiple fuel types makes it an excellent choice for different heating systems.
• Durability: The material’s quality and resistance to corrosion mean fewer replacements and long-term savings.
Installation Process and Maintenance Tips
Correct installation is vital for the optimal performance of your chimney system. Begin by ensuring that the masonry structure is in good condition and free from any damage. The flue liner should then be carefully inserted into the Top Insert Sleeve Ø 150. For better support, it is recommended to use the Top Plate and Top Clamp accessories together with this sleeve. These components work in harmony to guarantee that the weight of the flue liner is properly balanced, reducing stress on the chimney structure.
Maintenance Advice:
• Regular Sweeping: It is advisable to have your chimney swept at least twice a year by a certified professional—to keep any build-up of soot or creosote to a minimum.
• Inspection: Regular inspections by a competent person can help identify potential issues before they escalate, ensuring long-term safety.
• Avoid Chemical Cleaners: Use only approved tools and methods for cleaning to prevent damage to your chimney system.
Addressing Common Concerns
Objection 1: 'Is this product really needed if I have a modern chimney system?'
Even in modern installations, ensuring that each component is robust and compliant with safety standards is crucial. The Top Insert Sleeve Ø 150 offers an added layer of security for your chimney liner, directly improving its lifespan and safety profile.
Objection 2: 'I am not a professional—can I install this myself?'
While the installation process is straightforward, we recommend that the process is supervised or carried out by a professional. This is to ensure compliance with building regulations and avoid any potential installation errors that could compromise your safety.
Objection 3: 'What about maintenance and long-term upkeep?'
The design of the Top Insert Sleeve Ø 150 requires minimal maintenance. With just two annual sweeps and periodic inspections, you can keep your chimney operating efficiently. This ease of maintenance translates into lower long-term costs and a reduced risk of unexpected repair expenses.
Why Choose National Flues?
National Flues is a leading supplier of high-quality chimney accessories in the UK, renowned for their reliable products and excellent customer service. By choosing the Top Insert Sleeve Ø 150, you are investing in a product that not only meets rigorous regulatory standards but is also backed by a company that values safety, durability, and customer satisfaction. The precision-engineered design and use of premium materials ensure that your chimney installation remains secure and performs exceptionally well under varied conditions.
Final Thoughts
In conclusion, the Top Insert Sleeve Ø 150 is an investment in both the safety and efficiency of your chimney system. Its compatibility with a range of fuel types and adherence to UK building standards make it a smart choice for any homeowner or professional installer. The ease of installation and low maintenance requirements further enhance its appeal, offering you both peace of mind and long-term reliability.
For those serious about maintaining a high standard of safety and performance in their chimney systems, this product is a must-have. With its robust design and proven functionality, the Top Insert Sleeve Ø 150 stands out as a cornerstone of a well-constructed chimney installation.
Buy now or call 01670 206 999.
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