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Non-concentric increaser 3 diameters - Ø 175 (3-175-204)

National Flues presents the Non-Concentric Increaser 3 Diameters - Ø 175, an essential accessory for modern chimney flue systems. Designed for versatility and uncompromising performance, this premium increaser is ideal for both condensing and non-condensing applications. Enhance your installation with our high-quality, certified flue fitting – perfect for gas and oil systems and trusted by professionals across the UK.
£272.56
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

    Crafted from premium 316L Stainless Steel for exceptional durability
    Versatile design compatible with both condensing and non-condensing applications
    Quick and easy push-fit jointing system secured with a locking band
    Prevents condensate pooling for enhanced system performance
    CE marked and EN 1856-1 certified for trusted safety and quality
    Suitable for gas and oil fuel systems
    Specifically designed for inclined installations to optimise flue efficiency

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.

Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).

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

The Non-concentric increaser 3 diameters - Ø 175 from National Flues is a crucial component for versatile flue systems. Crafted from premium 316L grade stainless steel, this SWPro modular single-wall flue system comes equipped with a high-pressure sealing gasket (P1/H1) ensuring robust durability and airtight performance. Designed for both high and low temperature applications, the increaser is suitable for non-condensing and condensing setups, handling positive and negative pressure flue gases.

Ideal for a range of installations including boilers, ovens, ventilation, and chimney shaft liners, this increaser ensures seamless expansion of your system while preventing condensate pooling thanks to its intelligent design. It adheres to CE marking standards and is certified under EN 1856-1, guaranteeing safety and reliability. The easy-to-use push-fit jointing system, secured with a locking band, makes installation straightforward, ensuring a secure and tight fit at every joint.

Maintain a safe distance of 50mm from combustible materials such as wood and plasterboard during installation.

SKU: 3-175-204

Technical Specifications
SKU3-175-204
Diameteru00d8 175
Material316L Stainless Steel
CertificationCE, EN 1856-1
Fuel CompatibilityGas, Oil
Distance To Combustibles50mm
Installation SystemPush-fit jointing with locking band
Warranty10 Years
Ensure a clearance of at least 50mm from any combustible materials such as wood or plasterboard. Secure all joints using the high-pressure sealing gasket (P1/H1) along with the locking band provided to prevent any leaks. Attach suitable jointing gaskets at every connection in the flue system. Always refer to the detailed installation manual and adhere to local building regulations and manufacturer guidelines. It is advisable to have a qualified professional supervise or conduct the installation to guarantee optimal performance and safety.

The Non-Concentric Increaser is made from high-grade 316L stainless steel, ensuring high durability and performance.

Yes, it's designed for both condensing and non-condensing applications, accommodating both high and low temperatures, and handling positive and negative pressure flue gases.

The Non-Concentric Increaser is CE marked and certified under EN 1856-1 standards, ensuring compliance with safety and quality regulations.

Installation is straightforward with the push-fit jointing system secured by a locking band. For P1 and H1 installations, jointing gaskets should be fitted on every joint.

Maintain a minimum distance of 50mm from the outside of the flue to any combustible materials such as wood or plasterboard.

Yes, National Flues offers reliable nationwide delivery and trade accounts for professionals, alongside secure online payments for retail customers.

The increaser is ideal for a range of applications, including boilers, ovens, ventilation systems, and as a chimney shaft liner.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, May 8th. 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 3 diameters - Ø 175 buyers guide

Secure reliable performance and peace of mind with our Non-Concentric Increaser – add to cart or call 01670 206 999 now.

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