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Non-concentric increaser - Ø 550 (3-550-004)

National Flues offers the premium Non-concentric Increaser Ø 550, a top-quality solution designed to enhance commercial and industrial flue systems. Made from robust 316L stainless steel and fully CE marked, this increaser complies with EN 1856-1 standards to deliver reliable performance, durability, and safety. Upgrade your boiler, oven, or ventilation system with this cost-effective flue accessory and experience excellence with National Flues.
£524.90
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
    Designed to prevent condensate pooling in inclined flue runs
    CE marked and compliant with EN 1856-1
    High-pressure sealing gasket (P1/H1) for secure connections
    Versatile application in boilers, ovens, and ventilation systems
    Secure joining with Locking Band for enhanced stability

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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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.
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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.

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 Non-concentric increaser - Ø 550 from the SWPro line is a versatile and essential component for any commercial flue system. Crafted from high-quality 316L stainless steel, this increaser is designed to increase the flue diameter while preventing condensate pooling, particularly in inclined runs. It is suitable for a wide array of applications including boilers, ovens, and ventilation systems, and can function efficiently in both high and low-temperature settings under positive and negative pressure conditions.

Our increaser features a high-pressure sealing gasket (P1/H1) and is compliant with EN 1856-1 standards, ensuring absolute safety and performance.

SKU: 3-550-004

Technical Specifications
ModelNon-concentric Increaser - u00d8 550
SKU3-550-004
Material316L Stainless Steel
CertificationCE, EN 1856-1
ApplicationInclined flue systems, boilers, ovens, ventilation systems
Warranty10 Years
Minimum Distance To Combustibles50mm
Pressure SealingHigh-pressure sealing gasket (P1/H1)
Locking MechanismLocking Band
• Read and adhere to the installation manual before commencing work. • Always use recommended jointing gaskets for P1 and H1 applications to ensure secure connections. • Ensure a minimum clearance of 50mm from any combustible materials during installation. • For inclined flue runs, confirm that the increaser is firmly positioned to avoid movement and ensure safety. • If you are uncertain about any aspect of the installation, consult a professional installer to verify compliance with safety regulations.

A non-concentric increaser is used to increase the flue system diameter, particularly in inclined runs, while avoiding condensate pooling.

It is constructed from high-grade 316L stainless steel, ensuring durability and resistance to high temperatures.

Yes, but it's important to maintain a minimum distance of 50mm from any combustible materials like wood or plasterboard.

Yes, it fully complies with EN 1856-1 standards and is CE marked.

Yes, the SWPro system is universal and suitable for both condensing and non-condensing applications.

Installation is straightforward with its modular design and push-fit jointing system. Ensure the use of jointing gaskets in all P1 and H1 installations.

Yes, the non-concentric increaser is securely join using a Locking Band for added stability.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, May 13th. 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 550 buyers guide

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