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Boiler adaptor - Ø 400 (3-400-BA-353)

National Flues presents the Boiler Adaptor - Ø 400, a premium SWPro single wall flue connector crafted from 316L stainless steel. Engineered for both boilers and ovens, this adaptor meets EN 1856-1 standards and is ideal for handling both condensing and non-condensing flue gases. Perfect for professionals and DIY enthusiasts alike, its robust design and superior performance make it a standout accessory in the UK heating industry.
The price you pay today £238.99
including free delivery Give us a call if you find it cheaper and we'll normally price match.

 

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At a Glance

    316L Stainless Steel construction
    High-pressure P1/H1 sealing gasket
    Push-fit jointing system with locking band
    CE marked and EN 1856-1 compliant
    Versatile for condensing & non-condensing applications
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, June 27th. 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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Have Questions?
Phone: 01670 206999
Email: [email protected]

Our Boiler adaptor - Ø 400 is part of the SWPro modular single wall flue system. Constructed from 316L grade stainless steel, this high-quality adaptor features a high-pressure P1/H1 sealing gasket, making it versatile for both high and low-temperature applications. Suitable for non-condensing and condensing flue gases in positive and negative pressure, this adaptor is ideal for various uses including boilers, ovens, ventilation systems, and as a chimney shaft liner.

The SWPro system is CE marked and has passed rigorous EN 1856-1 standards, ensuring unbeatable performance and safety. Each module easily connects with a push-fit jointing system, secured by a locking band, and requires jointing gaskets in P1 and H1 installations for maximum efficiency.

SKU: 3-400-BA-353

Technical Specifications
Material316L Stainless Steel
Design StandardEN 1856-1
Seal TypeHigh-pressure P1/H1 sealing gasket
Installation MethodPush-fit jointing system secured by a locking band
ApplicationsBoilers, ovens, ventilation systems, chimney shaft liners
Operating ConditionsSuitable for both condensing and non-condensing flue gases
Clearance Requirement50mm from combustible materials
CertificationsCE marked
Warranty10 Years
For optimal installation, begin by cleaning all components. Utilize the push-fit jointing system to connect the adaptor, securing each joint with the locking band. Install jointing gaskets at every connection point for P1 and H1 installations to ensure a proper seal. When connecting to condensing appliances, apply silicone sealant at the adaptor and appliance outlet (unless the appliance has an integrated seal). Maintain a minimum 50mm clearance from any combustible material to comply with safety guidelines.

The Boiler Adaptor - Ø 400 is made from high-grade 316L stainless steel.

Yes, the adaptor is suitable for both high and low temperatures and can handle both condensing and non-condensing flue gases.

The installation requires a push-fit jointing system secured by a locking band. For P1 and H1 installations, jointing gaskets must be fitted at every joint. Ensure a 50mm clearance from any combustible materials.

The SWPro system is CE marked and has been tested under the EN 1856-1 standards.

For condensing appliances, the adaptor and appliance outlet should be sealed with silicone sealant unless the appliance already incorporates a seal at the outlet.

This adaptor can be used with boilers, ovens, ventilation systems, and as a chimney shaft liner.

Yes, the product includes a locking band for secure connection.

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