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Joiner - Ø 125 (20-125-J)

National Flues proudly presents the Joiner Ø 125, a critical accessory for multi fuel flexible flue liner systems such as the MI-FLEX 316 and 904. Crafted from high-quality 316L stainless steel, this joiner serves as a reliable and durable connector, ensuring your chimney system is both efficient and compliant with Building Regulations Document J. Read more...
Joiner - Ø 125
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Now only £21.99
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At a Glance

  • ["316L stainless steel construction for enhanced durability", "Handles temperatures up to 600u00b0C (T600) for versatile fuel applications", "Fully compliant with Building Regulations Document J and HETAS/CE standards", "Optimised for use with MI-FLEX 316 and 904 flexible flue liner systems", "Compatible with wood (<20% moisture), smokeless coal, oil, and gas appliances", "Ensures a seamless, secure connection when extending multi fuel flexible liners"]

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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:

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Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.

Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).

“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.

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

The Joiner Ø 125 is an essential component in the MI-FLEX 316 and 904 multi fuel flexible flue liner systems. Crafted to seamlessly join two pieces of multi fuel liner, it is a critical part of any flexible flue installation. Building Regulations Document J emphasizes that flexible flue liners must be enclosed inside a masonry chimney, and our Joiner Ø 125 ensures compliance with this requirement.Designed for use with wood <20% moisture, smokeless coal, gas, and oil appliances, the Joiner Ø 125 can handle temperatures of up to 600°C (T600 designation), making it a versatile choice for various fuel types.

The accessory is particularly useful for extending the chimney liner when lengths exceed the maximum flex available. It's important to note that while it is ideal for multi fuel liners, it must not be used on gas liners.For optimal performance, the chimney system should be designed for easy maintenance and sweeping. Regular cleaning is crucial, with annual inspections recommended for all applications and twice-yearly sweeping for solid fuel appliances.

Always use HETAS registered sweeps and avoid chemical cleaners or mild steel tools to maintain the integrity of your stainless steel chimneys.

Features & Benefits

SKU: 20-125-J

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, November 14th. 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
SKU20-125-J
DimensionsØ 125 mm
Material316L Stainless Steel
Temperature RatingUp to 600°C (T600 designation)
Fuel CompatibilityWood (<20% moisture), Smokeless Coal, Oil, Gas
SystemMI-FLEX 316 and 904 flexible flue liner systems
CertificationsHETAS / CE, compliant with Building Regulations Document J
Ensure that the Joiner Ø 125 is installed within a properly constructed masonry chimney as mandated by Building Regulations Document J. When installing, align the connector carefully with the flue liner sections to avoid misalignment that could impair performance. Always use the appropriate tools and HETAS registered sweepers during maintenance. Please note, this joiner must not be used for gas liners. Avoid chemical cleaners and mild steel tools on stainless steel components to prevent corrosion or other damage. For optimal performance, follow the manufacturer’s guidelines and have your chimney system professionally inspected annually, with solid fuel appliances swept at least twice a year.

No, the Joiner Ø 125 must not be used on gas liners. It is specifically designed for multi fuel flexible flue liners.

The Joiner Ø 125 is suitable for use with wood <20% moisture, smokeless coal, gas, and oil appliances.

Yes, the Joiner Ø 125 complies with Building Regulations Document J, which requires that flexible flue liners be enclosed inside a masonry chimney.

The Joiner Ø 125 can handle temperatures up to 600°C (T600 designation).

Chimneys serving solid fuel appliances should be swept at least twice a year. Annual inspections are recommended for all applications to ensure optimal performance and safety.

No, under no circumstances should chemical cleaners or mild steel tools be used to sweep stainless steel chimneys. Always use appropriate tools and professional services.

A list of HETAS registered sweeps can be found at www.hetas.co.uk. It is crucial to use competent professionals for chimney sweeping.

 

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