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IL - Adaptor to Flue Liner - Ø 125 (24-125-03)

National Flues proudly presents the IL Adaptor to Flue Liner Ø 125 – a high-quality, twin wall insulated gas vent solution. This adaptor is designed to perfectly convert your existing IL gas vent system to work seamlessly with flexible flue liners in domestic settings. Whether you are upgrading your fireplace, renovating your heating system, or installing a new gas appliance, this adaptor is the ideal choice for ensuring safe, efficient operations. With a legacy of over 25 years in the UK market, our IL Adaptor stands as a benchmark in quality and reliability, making it a must-have for both trade professionals and homeowners.
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£28.49
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At a Glance

  • Durable aluminium liner paired with a robust zalutite outer casing for superior corrosion protection
  • Twin wall insulated design featuring a precise 6mm air gap for excellent thermal efficiency
  • Specifically engineered for naturally aspirated domestic gas appliances, ensuring reliability under negative pressure
  • Capable of handling flue gas temperatures up to 250°C, keeping operations safe and effective
  • Proven performance in the UK market for over 25 years, offering trusted quality

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.

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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).

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

The IL Adaptor to Flue Liner Ø 125 is part of a twin wall insulated, pre-fabricated domestic gas vent system. It has built a solid reputation over 25 years for its quality and reliability. Designed specifically for naturally aspirated domestic gas-fired appliances with a draught hood or diverter, this adaptor is perfect for chimneys required to operate under negative pressure and dry conditions.

The flue gas temperatures should not exceed 250°C, ensuring safe and efficient performance. This product is available in three diameter sizes: 100mm, 125mm, and 150mm. It consists of an aluminium liner and a durable zalutite outer case, separated by a 6mm air gap.

Suitable for both internal and external applications, it is not suitable for condensing and positive pressure applications. Offering versatility and long-lasting performance, the IL adaptor is a vital component for your chimney system.

SKU: 24-125-03

Technical Specifications
SKU24-125-03
MaterialAluminium (Inner) & Zalutite (Outer)
Diameter125mm (Also available in 100mm and 150mm)
ApprovalsCE, BS EN 9001:2008
Max Temperature250u00b0C
Distance To Combustibles50mm (2 Inches)
Joint MethodPush fit and twist lock
Warranty5 year conditional warranty
Installation is straightforward when following the recommended guidelines. First, ensure that the chimney system is fully prepared for the integration of the adaptor. Securely fit the adaptor into the existing IL gas vent system using the designated push fit and twist lock mechanism. Always confirm that the adaptor maintains a minimum 50mm distance from combustible materials to comply with safety standards. Note that this product is intended solely for dry, negative pressure applications and is not suitable for condensing or positive pressure environments. If any installation challenges arise, consult a professional installer or refer to detailed manufacturer instructions to guarantee optimal system performance.

The IL Adaptor to Flue Liner Ø 125 is used to convert from IL gas vent to a flexible flue liner, suitable for domestic gas-fired appliances.

Yes, the IL Adaptor to Flue Liner Ø 125 is suitable for both internal and external applications.

The IL Adaptor can handle flue gas temperatures up to 250°C.

No, it is not suitable for condensing and positive pressure applications.

The IL Adaptor consists of an aluminium liner and a zalutite outer case, with a 6mm air gap for insulation.

The IL Adaptor to Flue Liner is available in 100mm, 125mm, and 150mm diameter sizes.

The IL gas vent system has been in use in the UK for over 25 years.
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 IL - Adaptor to Flue Liner - Ø 125 buyers guide

Enhance your gas vent system's performance and safety by adding the IL Adaptor to your order today.

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