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Top Clamp - Ø 150 (20-150-C)

National Flues presents the Top Clamp Ø 150, a key accessory in the secure installation of flexible flue liners. Formulated to work seamlessly with MI-FLEX 316 and 904 flue liners, this product is a critical component in ensuring the safety and stability of your chimney system. Read more...
Top Clamp - Ø 150
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At a Glance

  • Robust construction in 316L stainless steel
  • Designed for flexible flue liners (MI-FLEX 316 & 904)
  • Handles high temperatures up to 600°C (T600 rating)
  • Complies with HETAS, CE and Building Regulations (Doc J)
  • Compatible with wood (under 20% moisture), oil, gas, and smokeless coal
  • Essential support element for chimney stack installations

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Phone: 01670 206999
Email: sales@nationalflues.com

The Top Clamp Ø 150 is a vital component in the installation of flexible flue liners. Specifically designed for use with MI-FLEX 316 and 904 flue liners, this top clamp ensures a secure and stable fit at the top of your chimney stack. It's perfect for multi-fuel applications, handling temperatures up to 600°C (T600 designation), and works seamlessly with wood (under 20% moisture), smokeless coal, gas, and oil appliances.

Compliance with Building Regulations Document J is essential, stipulating that flexible flue liners must be enclosed in a masonry chimney. Before installation, ensure your chimney stack's structure is sound, all chimney pots are crack-free, and proper flaunching is applied at the stack's top. Ensure your chimney system allows for easy sweeping and maintenance by professional sweeps, ideally twice a year for solid fuel applications.

SKU: 20-150-C

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, November 17th. This is based on current lead times. Bear in mind that it is a busy time of year. If you need a product delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. Visit our Shipping Information page for more information.

About National Flues Ltd +

We began over 30 years ago as a fireplace shop in the North East. We now supply hundreds of trade professionals and thousands of retail customers, all across the UK, every month. We are still a family owned business, lead by the MD Neil, and always try our best to deliver the best possible experience. We also price match, so give us a call if you find this cheaper and want to buy from us. Visit our about us page to read a bit more.

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Technical Specifications
SKU20-150-C
Material316L Stainless Steel
SizeØ 150
Temperature Rating600°C (T600)
ComplianceHETAS / CE, Building Regs Doc J
SystemMI-FLEX Accessories MF20
Compatible FuelsWood (under 20% moisture), Oil, Gas, Smokeless Coal
ApprovalsHETAS / CE
- Use in conjunction with the Top Plate and Top Insert Sleeve for complete support. - Ensure your chimney stack is solid, with crack-free chimney pots. - Flaunching must be correctly applied at the top of the stack to enhance stability. - Installation should only be performed in a masonry chimney as required by Building Regulations Document J. - Regular maintenance and sweeping (at least twice a year for solid fuel appliances) are recommended to keep your system safe and efficient.

The Top Clamp Ø 150 is used to support the vertical weight of a flue liner within a chimney stack, ensuring stability and safety.

Yes, it is suitable for use with appliances that reach up to 600°C (T600 designation).

The Top Clamp Ø 150 is compatible with wood (with less than 20% moisture), smokeless coal, gas, and oil.

Yes, it complies with Building Regulations Document J, requiring flexible flue liners to be installed within a masonry chimney.

You will need a Top Plate and a Top Insert Sleeve to correctly support the weight of the flue liner at the chimney stack's top.

For solid fuel applications, it's recommended to sweep the chimney at least twice a year: once at the end of the heating season and once at the start of the next season.

Ensure the chimney system allows for easy sweeping and maintenance. Avoid using chemical cleaners or mild steel tools on stainless steel chimneys.

 

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