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Non-concentric increaser 2 diameters - Ø 450 (3-450-104)

The National Flues Non-concentric Increaser - Ø 450 is a premium accessory for the SWPro modular single wall flue system. Designed to enhance your chimney flue performance, it offers superior durability and reliable functionality. Ideal for both high and low temperature applications, this increaser is a must-have for professionals and domestic installers seeking down-to-earth quality and safety. Enhance your installation with this indispensable component and experience the difference in performance.
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£527.49
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
  • Non-concentric design increases system diameter effectively
  • Specially designed for inclined flue runs to prevent condensate pooling
  • Push-fit joint system secured with a locking band
  • CE marked and compliant with EN 1856-1 standards
  • Suitable for both high and low temperature applications including condensing and non-condensing scenarios

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.
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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.

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

The Non-concentric Increaser - Ø 450 is part of the versatile SWPro range, a modular single wall flue system made from high-grade 316L stainless steel. Featuring a robust high-pressure sealing gasket (P1/H1), this universal flue system can handle both high and low temperature applications, including non-condensing and condensing scenarios. It is suitable for a wide range of exhaust systems such as boilers, ovens, ventilation systems, and chimney shaft liners.Constructed from 316L stainless steel, the SWPro system guarantees durability and reliability.

Each unit is CE marked and complies with EN 1856-1 standards, ensuring quality and safety. The system utilises a push-fit jointing mechanism secured with a locking band, and for P1 and H1 installations, jointing gaskets must be fitted on every joint. Make sure to maintain a 50mm gap from any combustible material.This increaser is especially useful for inclined runs where it prevents condensate from pooling, ensuring optimal performance and longevity of your flue system.

SKU: 3-450-104

Technical Specifications
SKU3-450-104
Increaser Sizeu00d8 450
Material316L Stainless Steel
StandardsCE marked, EN 1856-1 compliant
Installation MethodPush-fit jointing with locking band
Combustible Clearance50mm minimum
Warranty10 Years
Priceu00a3376.57 (trade) / u00a3527.49 (retail)
System CompatibilitySWPro modular single wall flue system
Fuel CompatibilityGas, Oil
Installation of the Non-concentric Increaser is straightforward yet requires careful attention to detail. Ensure that every joint is fitted with the specified high-pressure sealing gasket when used in P1 and H1 installations. The push-fit jointing mechanism simplifies the assembly process, but it is crucial to secure the connections with the provided locking band to avoid any potential leaks. Always maintain a minimum of 50mm clearance from any combustible material to adhere to safety regulations. Prior to installation, verify that all components are undamaged and clean. If installing in an inclined run, make sure that the increaser is positioned to prevent condensate from pooling. Follow manufacturer guidelines strictly and consult with a professional if uncertain about any aspect of the installation process.

It is used to increase the diameter of a flue system while preventing condensate pooling, especially in inclined runs.

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

Yes, the increaser is CE marked and complies with EN 1856-1 standards.

Yes, it is suitable for both high and low-temperature applications, including non-condensing and condensing scenarios.

It features a push-fit jointing system secured with a locking band. For P1 and H1 installations, jointing gaskets must be used on every joint.

Ensure a minimum distance of 50mm from the outside of the flue to any combustible material.

It is compatible with the SWPro modular single wall flue system, which is versatile and can handle various applications.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Wednesday, April 30th. If you need faster stove or fireplace delivery please give us a call. We can often 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 Non-concentric increaser 2 diameters - Ø 450 buyers guide

Order your Non-concentric Increaser today to ensure a flawless flue system installation and superior performance.

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