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IL - Length 457mm (18in) - Ø 125 (24-125-12)
National Flues proudly presents the IL 457mm (18in) Length – Ø 125 Twin Wall Insulated Gas Vent, a trusted solution for domestic gas-fired appliances. This high-quality, twin wall gas vent, featuring an aluminium inner liner and a corrosion-resistant zalutite outer casing, guarantees reliable performance in both internal and external settings. Ideal for naturally aspirated systems, this vent ensures efficient and safe dispersion of flue gases up to 250°C. Discover a range of complementary accessories to perfect your gas vent installation, available exclusively at National Flues.
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In Stock
£31.99
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Twin wall insulated design with a 6mm air gap
Aluminium inner liner and zalutite coated outer case for superb durability
Precisely engineered effective length of 419mm
Suitable for both internal and external applications
Handles flue gas temperatures up to 250°C
Complies with CE and BS EN 9001:2008 standards
Push fit and twist lock joint method
5 year conditional warranty ensuring peace of mind
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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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“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
The IL 457mm (18in) Length - Ø 125 is a twin wall insulated, pre-fabricated domestic gas vent designed for naturally aspirated domestic gas-fired appliances. Known for its quality and durability over the last 25 years in the UK, this gas vent features an aluminium inner liner and a zalutite outer case, separated by a 6mm air gap, ensuring optimal thermal efficiency. It supports chimney operations under negative pressure and dry conditions, with flue gas temperatures not exceeding 250°C.
Available in three diameters (100mm, 125mm, and 150mm), this product is suitable for both internal and external applications but is not compatible with condensing or positive pressure systems. This 457mm length has an installed effective length of 419mm, making it a precise fit for various installations.
SKU: 24-125-12
Technical Specifications
SKU
24-125-12
Product Length
457mm (18in) nominal, 419mm effective length
Diameter
125mm
Inner Material
Aluminium
Outer Material
Zalutite (Zinc-Aluminium Coated Steel)
Flue Gas Temperature
Up to 250u00b0C
Distance To Combustibles
50mm (2 inches)
Installation Method
Push fit and twist lock
Warranty
5 year conditional warranty
Approvals
CE, BS EN 9001:2008
Compatible Fuels
Gas (Naturally aspirated gas-fired appliances)
• Before installation, ensure that your appliance and venting system meet all manufacturer recommendations and building regulations. • Verify that the installation area maintains a minimum clearance of 50mm from any combustible materials. • The push fit and twist lock design enables a secure, hassle-free assembly, but it is essential to check all connections for air-tightness. • For external installations, confirm that weatherproof seals are in place; consider optional accessories such as external sealing kits and support brackets to enhance durability. • Always refer to the detailed installation manual provided with the product for step-by-step guidance and safety warnings.
The IL gas vent is designed for naturally aspirated domestic gas-fired appliances with a draught hood or diverter.
Yes, the IL 457mm (18in) Length - Ø 125 can be used for both internal and external applications.
No, this product is not suitable for condensing or positive pressure applications.
The IL gas vent is designed to handle flue gas temperatures up to 250°C.
This gas vent features an aluminium inner liner and a zalutite outer case, separated by a 6mm air gap.
The IL gas vent system has been used in the UK for over 25 years, earning a reputation for quality and reliability.
The IL gas vent is available in three diameter sizes: 100mm, 125mm, and 150mm.
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 - Length 457mm (18in) - Ø 125 buyers guide
Comprehensive Buyers Guide for the IL 457mm (18in) - Ø 125 Twin Wall Insulated Gas Vent
When selecting a gas vent system for your domestic appliance, it is crucial to understand the features, benefits, and installation requirements to ensure a safe, efficient, and compliant setup. The IL 457mm (18in) Length – Ø 125 Twin Wall Insulated Gas Vent has been engineered for excellence, backed by a proven 25-year track record across UK homes. In this guide, we explore its standout features, address common questions, and explain how to maximise its performance while considering compatible optional accessories.
Key Features Overview
• Superior Insulation: Designed with a twin wall construction, the vent boasts a 6mm air gap that significantly increases thermal efficiency.
• Durable Materials: Its aluminium inner liner combined with a zalutite aluminium-zinc coated steel outer case promises durability and exceptional resistance to corrosion, making it suitable for a variety of environments, including harsh external conditions.
• Precision Engineering: With a nominal length of 457mm and an effective installed length of 419mm, this product ensures a flawless fit during installation, reducing the risk of errors and rework.
• Safety Standards: Fully compliant with CE and BS EN 9001:2008, and designed to handle flue gas temperatures up to 250°C, the vent is both safe and highly efficient.
Benefits for Domestic Installations
The IL gas vent system is specifically tailored for naturally aspirated domestic gas-fired appliances. One significant advantage is its ability to maintain optimal chimney performance under negative pressure and dry conditions. This ensures that flue gases are effectively directed away from the dwelling, reducing risks associated with carbon monoxide and other harmful emissions. Moreover, the push fit and twist lock installation method simplifies the assembly process, making it an attractive option for both professional installers and self-build enthusiasts.
Installation Tips and Considerations
Proper installation is imperative for the safe operation of your gas vent system. Start by confirming that your installation space adheres to the required clearances, particularly the 50mm distance from combustible materials. Always refer to the installation manual and consider engaging a qualified professional if you are unsure about any step in the process. Additionally, for installations in outdoor environments, exploring optional accessories such as weatherproofing kits or additional support brackets may enhance the longevity and reliability of your setup.
Addressing Common Objections and FAQs
Is this vent suitable for all gas appliances?
The IL 457mm vent is ideal for naturally aspirated, domestic gas-fired appliances. However, it is not compatible with condensing or positive pressure systems, so ensure you verify the requirements of your appliance prior to purchase.
What about durability?
Thanks to its robust construction using high-grade aluminium and zalutite, the vent is built to withstand the corrosive nature of flue gases and external environmental conditions. This longevity is further enhanced by strict adherence to industry safety standards.
How complicated is the installation process?
The vent’s push fit and twist lock design simplifies the installation process significantly. Still, it is essential to follow all guidelines and maintain the correct clearances. Optional installation accessories such as support brackets can further facilitate a secure fit and reduce potential installation errors.
What accessories might I need?
While the IL vent system is complete in itself, you may consider optional accessories to fine-tune your installation. These include additional sealing kits, support brackets, trim caps, and weatherproofing accessories for external applications. Exploring our range can help you create a truly customised solution that meets all your installation requirements.
Making Your Purchase Decision
When choosing a gas vent system, factors such as quality, ease of installation, and compliance with safety standards are of utmost importance. The IL 457mm (18in) – Ø 125 Twin Wall Insulated Gas Vent meets these criteria while also offering a reliable and efficient solution for domestic gas appliances. With a competitive price and excellent warranty backing, it represents excellent value for money.
Furthermore, National Flues is renowned for providing outstanding customer support and a range of optional accessories that allow you to tailor your installation exactly to your needs. Always consider how these accessories can enhance the overall performance and aesthetic of your chimney system, ensuring not only safety but also a neat and professional finish.
Final Thoughts
In summary, the IL 457mm (18in) Twin Wall Insulated Gas Vent stands out as a high-quality, reliable, and safe solution for your domestic gas appliance venting needs. Its innovative design features, combined with easy installation and long-term durability, make it a preferred choice for installers and homeowners alike. The added flexibility of choosing complementary accessories further enhances its appeal, allowing you to adjust the system to fit the unique parameters of your installation environment.
If you are considering a gas vent system that delivers on performance, safety, and ease of installation, this product should be at the top of your shortlist. Buy now or call 01670 206 999.
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