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Reducer 3 diameters - Ø 400 (3-200-208)

Discover National Flues' Reducer 3 Diameters - Ø 400, a high-performance solution designed for seamless flue installations. This premium reducer, suitable for boilers, ovens, and chimneys, meets EU standards and is ideal for both residential and commercial applications. Enhance your flue system with this versatile accessory, engineered for quality and reliability.
The price you pay today £763.99
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

    High-grade 316L stainless steel construction
    Versatile diameter range: Ø80 up to Ø400
    Reliable high-pressure P1/H1 sealing gasket for leak-proof joins
    CE marked and compliant with EN 1856-1 standards
    Secure installation with locking band and mandatory joint gaskets
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, June 16th. 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.

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

The Reducer 3 Diameters – Ø 400 is a versatile component within the SWPro modular single wall flue system, designed to decrease the diameter of the proceeding system, such as reducing 150ID to 130ID. Crafted from high-grade 316L stainless steel, this reducer is equipped with a high-pressure P1/H1 sealing gasket, ensuring a robust and leak-proof connection. The SWPro system is CE marked and qualified under EN 1856-1 standards for both high and low temperature applications, making it suitable for a wide range of uses including boilers, ovens, and ventilation systems.

Each connection is secured using a locking band, and joint gaskets are mandatory for P1 and H1 installations. It's crucial to maintain a 50mm clearance from any combustible materials to ensure safety.

SKU: 3-200-208

Technical Specifications
SKU3-200-208
Diameter Rangeu00d880 up to u00d8400
Material316L Stainless Steel
Sealing GasketHigh-pressure P1/H1
ApprovalCE
Clearance50mm from combustibles
SystemSWPro
Warranty10 Years
Follow the manufacturer's guidelines for a secure and efficient installation: - Use the push-fit jointing system specifically designed for the SWPro range. - Fasten every connection using the locking band to ensure a firm and leak-proof joint. - Always fit joint gaskets at each P1 and H1 connection to maintain system integrity. - Verify that a minimum clearance of 50mm is preserved from any combustible material to ensure safety and compliance with regulations. - Double-check all connections post-installation to confirm that the system is secure and operating to its full potential. Proper planning and adherence to these instructions will result in an optimised, high-performance flue system.

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

Yes, it is designed for use in both condensing and non-condensing applications, making it highly versatile.

The CE mark indicates that the SWPro system complies with European safety, health, and environmental protection standards.

The reducer should be installed with a push-fit jointing system secured by a locking band. Joint gaskets must be fitted on every joint for P1 and H1 installations.

A clearance of at least 50mm from the outside of the flue to any combustible material is required.

The SWPro system can accommodate diameters ranging from Ø 80 up to Ø 400, ensuring a wide applicability.

It is suitable for a variety of applications including boilers, ovens, ventilation systems, and as a chimney shaft liner.

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