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Reducer 2 diameters - Ø 125 (3-80-108)

National Flues proudly presents the Reducer 2 Diameters - Ø125, a premium component for modular single-wall flue systems. Made from robust 316L stainless steel, this reducer is engineered to deliver efficiency and longevity in applications ranging from boilers to ventilation systems. Enhance your installation with this high-performance and CE-marked product, designed for both trade professionals and homeowners seeking reliable, high-quality flue solutions.
The price you pay today £100.99
including free delivery Give us a call if you find it cheaper and we'll try to price match.

 

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At a Glance

    Crafted from high-grade 316L stainless steel for outstanding durability
    Efficiently reduces flue system diameters for versatile installations
    CE marked and compliant with EN 1856-1 standards ensuring safety and reliability
    Features a user-friendly push-fit jointing system with a secure locking band
    Suitable for a range of applications including boilers, ovens, and ventilation systems
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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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.

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 Reducer 2 diameters - Ø 125 is a crucial component in the SWPro modular single-wall flue system. Constructed from high-grade 316L stainless steel, it is engineered to reduce the diameter of your proceeding flue system, making it versatile and essential for various applications like boilers, ovens, and ventilation systems. Suitable for both high and low temperature, non-condensing and condensing environments, this reducer is compatible with positive and negative pressure flue gases.

With CE marking and compliance with EN 1856-1 standards, it guarantees both quality and safety. The SWPro system features a straightforward push-fit jointing mechanism secured with a locking band. For P1 and H1 installations, special gaskets ensure airtight joints, making it practical and secure.

With a recommended clearance of 50mm from combustibles, this component is both safe and efficient.

SKU: 3-80-108

Technical Specifications
Material316L Stainless Steel
SystemSWPro Modular System
ApprovalsCE Marked, EN 1856-1 Compliant
Diameter ReductionDesigned for optimal transition (e.g. u00d880 to u00d8125)
FuelsCompatible with Gas and Oil
ClearanceMinimum 50mm from combustibles
Warranty10 Years
InstallationPush-fit join system with locking band and optional gaskets
Ensure the flue system is measured accurately before installation. Clean and dry all joint surfaces prior to assembly. Fit the reducer using the push-fit jointing system, and secure with the locking band. For P1 and H1 installations, install the special gaskets provided to ensure an airtight seal. Always maintain a clearance of at least 50mm from any combustible materials. Follow local building regulations and the provided installation manual closely. Consider optional accessories like additional gaskets or finishing trims for enhanced stability and aesthetics.

The reducer is made from high-grade 316L stainless steel, ensuring durability and corrosion resistance.

Yes, the reducer is suitable for both high and low temperature environments, as well as non-condensing and condensing applications.

This reducer can handle flue gases in both positive and negative pressure settings.

Yes, it is CE marked and meets the standards outlined in EN 1856-1.

The SWPro system uses a push-fit jointing system secured with a locking band. Make sure to fit jointing gaskets on every joint for P1 and H1 installations, and maintain a 50mm clearance from combustibles.

The reducer can be used in a variety of applications such as boilers, ovens, ventilation systems, and as a chimney shaft liner.

The reducer is used to decrease diameters of the proceeding system, for example, from 150ID to 130ID.

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