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Boiler adaptor - Ø 400 (3-400-BA-448)

National Flues presents the Boiler Adapter Ø 400, a state-of-the-art flue connection accessory designed for seamless integration with SWPro systems. This 316L stainless steel adapter is engineered for reliability, ensuring exceptional performance in installations ranging from boilers to ovens. Its superior build quality and adherence to EN 1856-1 standards make it an essential component for both condensing and non-condensing environments. Enhance your flue system setup by complementing it with additional accessories from National Flues for a complete, optimised installation.
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£181.99
with 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

  • Made from high-grade 316L stainless steel
  • CE marked and compliant with EN 1856-1 standards
  • Versatile for condensing and non-condensing applications
  • Designed for boilers, ovens, ventilation systems and chimney shaft liners
  • Simple push-fit jointing system with secure locking bands
  • Backed by a 10-year warranty ensuring long-term reliability

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.

We Won't Be Beaten On Price

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:

  • Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
  • Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
  • Operational Efficiency: We have streamlined processes to reduce overhead.

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).

“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.

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

The Boiler Adapter Ø 400 is designed for seamless integration with the SWPro modular single wall flue system. Crafted from high-grade 316L stainless steel, this adapter is engineered for both high and low temperature applications, supporting both condensing and non-condensing setups. The device is CE marked, adhering to EN 1856-1 standards, ensuring superior reliability and performance.

With a high-pressure sealing gasket (P1/H1), it is perfect for boilers, ovens, ventilation systems, and chimney shaft liners. Installation is hassle-free with a push-fit jointing system and essential locking bands, making it a reliable choice for your flue system needs.

SKU: 3-400-BA-448

Technical Specifications
Material316L Stainless Steel
Dimensionsu00d8 400
CertificationsCE marked, EN 1856-1 compliant
Warranty10 Years
ApplicationsBoilers, ovens, ventilation systems, chimney shaft liners
Installation MethodPush-fit jointing system with locking bands
Minimum Combustible Distance50mm
Suitable ForHigh and low temperature operations, condensing and non-condensing appliances
• Ensure the flue system and appliance are correctly aligned before installation. • Fit the high-pressure sealing gasket (P1/H1) at every joint for secure sealing. • For condensing appliances, apply silicone sealant at the connection unless an integrated seal is present. • Use the push-fit jointing system and secure with the provided locking bands. • Always maintain a minimum of 50mm clearance from any combustible materials. • Follow local building regulations and manufacturer's guidelines to ensure compliance with safety standards.

The Boiler Adapter Ø 400 is suitable for connecting SWPro flue systems to boilers, ovens, ventilation systems, and even as a chimney shaft liner.

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

Yes, the adapter supports both high and low temperature applications, including condensing and non-condensing systems.

The adapter features a modular push-fit jointing system with locking bands. For installations under P1 and H1 conditions, ensure to fit jointing gaskets on every joint and maintain a 50mm distance from any combustible materials.

The product is CE marked and adheres to EN 1856-1 designations: T200 H1 W Vm L50040 O(50) - Ø 80 up to Ø 200, and T200 H1 W Vm L50050 O(50) - Ø 250 up to Ø 400.

Yes, you can. However, it is recommended to seal the adapter and appliance outlet with silicone sealant unless the appliance has an integrated seal.

The thickness of the stainless steel varies depending on the flue diameter, ensuring optimal durability and performance.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, May 1st. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call. If you need faster stove or fireplace delivery please also 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. 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 Boiler adaptor - Ø 400 buyers guide

Order now to guarantee a secure, efficient connection and consider our accessory range to complete your installation.

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