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Screw-FIX Register Plate Adaptor - Ø 150 (25-150-RPA)

National Flues presents the Screw-FIX Register Plate Adaptor - Ø 150, an essential chimney accessory for achieving secure and compliant MI-FLEX flue installations. This high-quality register plate adapter is designed for reliable performance and seamless connection to MI-FLEX 316 and 904 flexible liners, ensuring a gas-tight seal and efficient transition within masonry chimneys. Read more...
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At a Glance

  • Secure connection for MI-FLEX flexible liners
  • Complies with Building Regulations Document J
  • Gas-tight seal with fire cement, ceramic rope, or high-temperature sealant
  • Rated for up to 600°C (T600 designation)
  • Ideal for wood (<20% moisture), smokeless coal, gas, and oil appliances
  • Long tail single-wall connection for reliable installation
  • Designed for installation under the register plate within masonry chimneys

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Have Questions?
Phone: 01670 206999
Email: sales@nationalflues.com

The Screw-FIX Register Plate Adaptor - Ø 150 is a key installation accessory specifically designed for seamless connection with MI-FLEX 316 and 904 flexible flue liners. This fitting ensures a comprehensive chimney system when used together with other MI-FLEX products. According to Building Regulations Document J, flexible flue liners must be fully enclosed within a masonry chimney.

This adaptor ensures that installation meets safety standards while being suitable for appliances up to 600°C (T600 designation). Ideal for use with wood having less than 20% moisture, smokeless coal, gas, and oil, this adaptor secures the transition from connecting flue systems to flexible liners, ensuring a gas-tight seal with the use of fire cement, ceramic rope, or high-temperature sealant. Installed at the base of the chimney underneath the register plate, it features a long tail single-wall connection, making it a versatile and essential piece for any compliant chimney setup.

SKU: 25-150-RPA

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.

Technical Specifications
SKU25-150-RPA
Diameter150 mm
Material CompatibilityMI-FLEX 316 and 904 flexible liners
Installation LocationBase of chimney below register plate
Temperature RatingUp to 600°C (T600)
Fuel CompatibilityWood (<20% moisture), smokeless coal, gas, oil
Connection TypeLong tail single-wall connection
ComplianceBuilding Regulations Document J
StockIN STOCK (73)
- Install the adaptor at the base of your masonry chimney directly beneath the register plate. - Ensure the flexible flue liner is fully enclosed within the chimney as mandated by Building Regulations Document J. - Use fire cement, ceramic rope, or high-temperature sealant to achieve a gas-tight connection between the chimney and flexible liner. - Confirm that all connections are secure, and that the adaptor is correctly aligned for optimal performance. - Note: This adaptor is not suitable for non-masonry chimneys; always verify compliance before installation.

The Register Plate Adaptor ensures a secure transition from the connecting flue system to the flexible flue liner, maintaining a gas-tight seal while complying with Building Regulations.

No, Building Regulations Document J stipulates that the flexible flue liner must be fully enclosed within a masonry chimney.

This adaptor can be used with wood (<20% moisture), smokeless coal, gas, and oil.

You should use fire cement, ceramic rope, or high-temperature sealant to secure the bottom fixing into the connecting flue below and the flexible liner above.

The adaptor is suitable for use with appliances that operate up to 600°C (T600 designation).

The adaptor is installed at the base of the chimney below the register plate. It connects to the register plate on the underside and transitions to the MI-FLEX flexible liner above.

Yes, the flexible flue liner must be completely enclosed within the masonry chimney with no part of it visible.

 

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