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Increaser - Ø 150 (3-150-002)

National Flues brings you the Increaser Ø 150, a premium stainless steel flue increaser designed to provide a seamless transition in flue diameters. Engineered for robust performance and reliability, this versatile accessory is ideal for upgrading boilers, ovens, and chimney shafts. Experience unmatched durability and efficiency with our CE-certified product, a perfect solution for both commercial and residential settings. Search for additional accessories at National Flues to complete your flue system optimisation.
£59.99
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At a Glance

    Robust 316L stainless steel construction for lasting durability
    Seamless diameter transition from 130ID to 150ID, enhancing system compatibility
    Meets stringent EN 1856-1 standards and carries CE certification
    Versatile for both non-condensing and condensing applications
    Integrated SWPro push-fit joint system with a secure Locking Band
    Requires a 50mm clearance from combustible materials for added safety

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:

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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 Increaser Ø 150 is a robust and versatile component designed for various flue systems. This concentric increaser allows you to smoothly transition flue diameters, enhancing the efficiency and adaptability of your system. Constructed from high-grade 316L stainless steel, it features superior resistance to heat and corrosion, ensuring longevity and performance.

The modular SWPro single wall flue system includes a high-pressure sealing gasket (P1/H1), making it suitable for both high and low temperatures, as well as for non-condensing and condensing applications. SWPro's applications include boilers, ovens, ventilation systems, and as chimney shaft liners. The system is backed by CE certification, confirming compliance with EN 1856-1 standards.

Installation is straightforward with a push-fit jointing system secured by a Locking Band. For P1 and H1 installations, jointing gaskets must be used on every joint. Maintain a minimum 50mm distance from any combustible materials to ensure safety.

SKU: 3-150-002

Technical Specifications
Material316L Stainless Steel
SystemSWPro Single Wall
ApplicationBoilers, ovens, ventilation systems, chimney shaft liner
CertificationsCE (EN 1856-1 compliant)
Diameter TransitionOptimised for 130ID to 150ID changes
Jointing MethodPush-fit with Locking Band
Required GasketsJointing gaskets for P1/H1 installations
Safety ClearanceMinimum 50mm from combustible materials
Warranty10 Years
For optimal performance, install using the SWPro push-fit jointing system and secure each connection with the provided Locking Band. Ensure that jointing gaskets are fitted on every joint for P1 and H1 installations. Maintain a safety clearance of at least 50mm from any combustible materials such as wood or plasterboard. Follow all manufacturer guidelines and CE instructions during installation to guarantee compliance with EN 1856-1 standards.

The Increaser Ø 150 is used to increase the diameter of a flue system, enhancing compatibility and performance.

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

Yes, it is suitable for both high and low-temperature applications and can be used in non-condensing and condensing systems.

The Increaser Ø 150 uses a push-fit jointing system secured by a Locking Band. For P1 and H1 installations, jointing gaskets must be used on every joint, and a 50mm clearance from any combustible materials must be maintained.

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

Yes, it is suitable for use with boilers, ovens, ventilation systems, and as a chimney shaft liner.

Ensure you maintain a distance of 50mm from any combustible materials such as wood or plasterboard.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, May 15th. 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 - Ø 150 buyers guide

Order now to secure a robust and efficient upgrade for your flue system!

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