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Non-concentric increaser - Ø 350 (3-350-004)

National Flues proudly presents the Non-Concentric Increaser Ø 350, a superior flue adapter engineered from resilient 316L stainless steel. Ideal for boilers, ovens, and ventilation systems, this product from our acclaimed SWPro series offers a robust solution to improve flue performance. Enhance your chimney upgrade with this premium quality, CE marked component, ensuring safety and durability across various heating applications.
£285.97
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

    High-grade 316L stainless steel construction
    Certified CE marking for safety and reliability
    Modular push-fit jointing system for straightforward installation
    Versatile design compatible with boilers, ovens, and ventilation systems
    Prevents condensate pooling during inclined flue runs, enhancing system longevity

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 Non-Concentric Increaser Ø 350 from our SWPro series is a versatile flue component designed for expanding your flue system diameter without the risk of condensate pooling. Crafted from high-grade 316L stainless steel, this increaser is suitable for both high and low-temperature applications, including boilers, ovens, and ventilation systems. Its CE marking underlines its compliance with European safety standards.

The modular design features a push-fit jointing system that simplifies installation, while its high-pressure sealing gasket ensures secure connections. It's vital to maintain a 50mm gap between the flue and any combustible materials, and jointing gaskets must be used in both P1 and H1 installations.

SKU: 3-350-004

Technical Specifications
Material316L Stainless Steel
StandardsCE Marked (EN 1856-1)
DesignModular push-fit jointing system
Applicable Diametersu00d8 80 up to u00d8 200 and u00d8 250 up to u00d8 400
Warranty10 Years
SystemSWPro
FuelsGas, Oil
Clearance50mm to combustibles
Installation is straightforward yet critical for optimal performance. Ensure you follow the modular push-fit instructions carefully. Always install jointing gaskets for both P1 and H1 installations. Maintain a minimum 50mm gap from any combustible materials, such as wood or plasterboard, to comply with safety standards. It is recommended that a professional installer or a competent tradesperson carries out the installation according to the provided guidelines to ensure both safety and efficiency.

It is made of high-grade 316L stainless steel, offering excellent durability and resistance to corrosion.

Yes, it comes with a CE marking, ensuring compliance with European safety and quality standards.

Absolutely, this product is designed for both non-condensing and condensing applications, handling flue gases in both positive and negative pressures.

This increaser is compatible with various applications, including boilers, ovens, ventilation systems, and chimney shaft liners.

The Non-Concentric Increaser Ø 350 features a modular push-fit jointing system, secured by a Locking Band. Ensure to fit jointing gaskets for P1 and H1 installations.

Maintain a 50mm clearance from any combustible materials such as wood or plasterboard.

Yes, we provide reliable nationwide delivery to ensure you receive your products promptly.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, May 12th. 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 Non-concentric increaser - Ø 350 buyers guide

Act now for enhanced performance and reliability — upgrade your system today.

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