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Top Hat Adaptor - Ø 150 (20-150-THA)

Discover the Top Hat Adaptor - Ø 150 from National Flues, a premium stainless steel flue accessory designed to deliver robust performance in chimney systems. This high-quality fitting is ideal for use with MI-FLEX flexible flue liners, making it an essential component for a seamless and safe chimney assembly. Enhance your set-up with this top-rated accessory and explore our range of complementary products for complete system integration.
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£60.99
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At a Glance

  • Premium 316L Stainless Steel construction
  • Robust 0.6mm thickness for enhanced durability
  • Withstands temperatures up to 600°C
  • Designed with a rebated connection for easy stove integration
  • Features a built-in square cover plate for a gas-tight seal
  • Complies with Building Regulations Document J requirements
  • Part of the MF20 MI-FLEX Accessories range ensuring system compatibility

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Have Questions?
Phone: 01670 206999
Email: [email protected]

The Top Hat Adaptor - Ø 150 is a premium flue accessory meticulously crafted from 0.6mm 316 stainless steel. This robust adaptor is part of our MF20 MI-FLEX accessories range, ensuring longevity and reliability. Perfectly engineered for use with MI-FLEX 316 and 904 flexible flue liners, this component is essential for creating a complete chimney system.

Designed to withstand temperatures up to 600°C, the Top Hat Adaptor is suitable for use with a variety of appliances including those burning wood with less than 20% moisture content, smokeless coal, gas, and oil. Installation complies with Building Regulations Document J, requiring that flexible flue liners are completely enclosed within a masonry chimney, with no flexible flue on show. Featuring a square cover plate, it ensures a gas-tight seal and seamless transition from the connecting flue to the flexible liner, enhancing both performance and safety.

Easy maintenance and cleaning ensure the system remains efficient, with annual sweeping recommended for solid fuel systems.

SKU: 20-150-THA

Technical Specifications
Material316L Stainless Steel
Thickness0.6mm
Max Temperature600u00b0C
Dimensionsu00d8 150mm
Applicable LinersMI-FLEX 316 & 904
CertificationsHETAS / CE
Design FeaturesSquare cover plate, rebated connection for 100mm flue movement
- Install at the base of the chimney beneath the register plate - Ensure that the flexible flue liner is fully enclosed within a masonry chimney as required by Building Regulations Document J - Secure the adaptor using fire cement, ceramic rope or high-temperature sealant to achieve a gas-tight connection - Verify that the rebated connection permits the connecting flue to slide up 100mm without obstruction - Regularly maintain and sweep the system, particularly for solid fuel appliances, to uphold efficiency and safety

The Top Hat Adaptor - Ø 150 is made from high-quality 0.6mm 316 stainless steel, ensuring durability and resistance to high temperatures.

Yes, the adaptor is suitable for appliances with temperatures up to 600°C, including those burning wood, smokeless coal, gas, and oil.

No, according to Building Regulations Document J, flexible flue liners can only be installed within a masonry chimney. Non-masonry installations are not acceptable.

Chimneys should be swept at least once a year, but for solid fuel appliances, it is recommended to sweep at the end of the heating season and before the start of the next season.

Use appropriate tools for stainless steel chimneys and avoid chemical cleaners or mild steel tools, as these can damage the system. Refer to HETAS for a list of registered chimney sweeps.

Yes, it has a rebated connection allowing the connecting flue to slide up 100mm for easy stove integration and disconnection.

The adaptor requires provisions to secure it firmly, using fire cement, ceramic rope or tape, or high-temperature sealant, ensuring a gas-tight seal.
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 Hat Adaptor - Ø 150 buyers guide

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Upgrade your chimney system today with our premium Top Hat Adaptor and experience unmatched reliability – order now!

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