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Increaser - Ø 80 (3-80-002)

Discover the Increaser - Ø 80 by National Flues, a premium chimney flue adaptor designed for both residential and commercial applications. Crafted from 316L stainless steel, this high-quality flue adaptor not only ensures a safe and efficient transition in your flue system but also meets rigorous performance standards including CE marking and EN 1856-1 compliance. Perfect for boilers, ovens, and ventilation systems, the Increaser - Ø 80 is a cornerstone product that complements an extensive rang Read more...
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At a Glance

    High-grade 316L stainless steel construction
    CE marked and EN 1856-1 compliant
    Reliable push-fit jointing system with locking band
    Suitable for both non-condensing and condensing applications
    Ideal for boilers, ovens, ventilation systems and chimney shaft liners
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, June 9th. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please give us a call. We can sometimes 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

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

The Increaser - Ø 80 is an essential component of the SWPro modular single wall flue system. Constructed from high-grade 316L stainless steel, this increaser is built to last and withstand challenging environments. It features a high-pressure sealing gasket (P1/H1), making it suitable for a wide range of applications including boilers, ovens, and ventilation systems, as well as a chimney shaft liner.

The system supports both high and low-temperature environments and handles both non-condensing and condensing applications effectively. Tested and CE marked, the SWPro system meets EN 1856-1 standards and ensures a safe and secure installation with its push-fit jointing system and locking band. Always maintain a 50mm clearance from combustible materials during installation.

SKU: 3-80-002

Technical Specifications
Material316L Stainless Steel
StandardsCE Marked, EN 1856-1 Compliant
Applicable SystemsBoilers, Ovens, Ventilation Systems, Chimney Shaft Liners
InstallationPush-fit jointing system with locking band
Temperature RangeSuitable for both high and low-temperature applications
Pressure SealingHigh-pressure sealing gasket (P1/H1)
Clearance50mm from combustibles
Warranty10 Years
Ensure all push-fit jointing components are firmly secured. Begin by fitting the high-pressure sealing gasket (P1/H1) accurately, ensuring it is seated properly to create a secure, leak-proof joint. Always maintain a strict 50mm clearance from any combustible material during installation. Follow the manufacturer’s guidelines, checking alignment and integrity at each stage before securing the locking band.

The Increaser - Ø 80 is made from high-grade 316L stainless steel, ensuring durability and resistance to corrosion.

Yes, the Increaser - Ø 80 is suitable for a wide range of temperature applications, including both high and low-temperature environments.

Yes, this product is designed for both non-condensing and condensing applications.

The Increaser - Ø 80 complies with EN 1856-1 standards and is CE marked, ensuring it meets high safety and performance benchmarks.

Ensure that all jointing gaskets are fitted and that a 50mm clearance is maintained from all combustible materials. Secure joints using the included locking band.

This increaser is suitable for a variety of systems, including boilers, ovens, ventilation systems, and even as a chimney shaft liner.

The SWPro system supports flue diameters ranging from Ø 80 up to Ø 400, accommodating a variety of installation needs.

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