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Increaser 2 diameters - Ø 550 (3-550-102)

Discover the Increaser 2 Diameters - Ø 550 from National Flues, an exceptional modular flue system adapter designed to expand flue diameters effortlessly. This premium product, part of the renowned SWPro range, is built from high-grade 316L stainless steel and ensures durability and reliability for both commercial and domestic installations. Whether you refer to it as a flue increaser, adapter, or diameter expander, this CE-marked component meets the highest industry standards and delivers optimal performance. Trust National Flues for quality, efficiency, and expert service.
£678.42
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

    Expands flue diameters by two sizes (e.g., 100ID to 150ID)
    Constructed from high-grade 316L stainless steel for durability
    Certified to CE and compliant with EN 1856-1 standards
    Suitable for both condensing and non-condensing applications
    Features push-fit joints with Locking Bands and high-pressure sealing gaskets

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 Increaser 2 diameters - Ø 550 from SWPro is a premium, modular single-wall flue system designed to adapt varying flue diameters effortlessly. Constructed from high-grade 316L stainless steel, it ensures longevity and excellent performance in both high and low-temperature settings, suitable for non-condensing and condensing applications. SWPro’s robust design includes joints secured by Locking Bands and high-pressure sealing gaskets (P1/H1), offering unparalleled reliability.

Ideal for boilers, ovens, ventilation systems, and as a chimney shaft liner, this CE-marked product adheres to the highest standards (EN 1856-1). Ensure a safe installation by maintaining a minimum 50mm distance from combustibles.

SKU: 3-550-102

Technical Specifications
SKU3-550-102
Product NameIncreaser 2 Diameters - u00d8 550
Material316L Stainless Steel
StandardsCE, EN 1856-1
Temperature ApplicationsHigh and low temperature settings
Flue Increase2 diameters (e.g., 100ID to 150ID)
Fuel CompatibilityGas, Oil
Minimum Distance To Combustibles50mm
Warranty10 Years
SystemSWPro
For optimal performance and longevity, ensure the push-fit joint system is correctly installed using the provided Locking Bands. Always fit high-pressure sealing gaskets (P1/H1) at every joint to maintain a secure, leak-proof connection. It is imperative to observe a minimum clearance of 50mm from any combustible material to comply with safety standards. Follow the guidelines provided by the manufacturer and consult a professional installer if uncertain about any step in the process.

The Increaser 2 Diameters - Ø 550 is used to expand the diameter of a preceding flue system, allowing for better adaptability and performance in various high and low-temperature applications.

This increaser is made of high-grade 316L stainless steel, known for its durability and high-temperature resilience.

Yes, the Increaser 2 Diameters - Ø 550 is suitable for both condensing and non-condensing applications.

Ensure a proper fit using the push-fit joint system with Locking Bands. For P1 and H1 installations, jointing gaskets must be installed on every joint. Maintain a 50mm distance from any combustible material.

The product is CE marked and complies with EN 1856-1 standards, ensuring it meets rigorous quality and safety benchmarks.

Yes, this product is versatile and can be used in ventilation systems, boilers, ovens, and as a chimney shaft liner.

It is designed to increase the flue system's diameter by two sizes, for example, from 100ID to 150ID.
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 Increaser 2 diameters - Ø 550 buyers guide

Secure your premium Increaser 2 Diameters - Ø 550 now and enjoy unparalleled performance.

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