Non-concentric increaser - Ø 750
At a Glance
- 316L Stainless Steel construction for exceptional durability and corrosion resistance
- CE marked and compliant with EN 1856-1 ensuring high safety standards
- Versatile performance for both condensing and non-condensing applications
- Easy push fit jointing system secured with a Locking Band
- Specially designed for inclined runs to prevent condensate pooling

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.
- Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
- Operational Efficiency: We have streamlined processes to reduce overhead.
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]
- Info
- Specs
- Install
- FAQs
The Non-concentric increaser - Ø 750 is a vital component in the SWPro modular single wall flue system. Made from high-quality 316L stainless steel, this increaser is designed to handle both high and low temperatures, as well as both non-condensing and condensing applications. The SWPro system is incredibly versatile, making it suitable for a range of uses including boilers, ovens, and ventilation systems, as well as functioning efficiently as a chimney shaft liner.
Boasting a CE mark and adhering to EN 1856-1 standards, the SWPro system meets all necessary safety and efficiency criteria. The innovative push fit jointing system, secured with a Locking Band, ensures easy installation and secure connections. Jointing gaskets must be fitted on every joint to maintain high-pressure sealing.
Remember, a 50mm clearance from any combustible materials is necessary, adding an extra layer of safety to the installation.With options for various thicknesses depending on the flue diameter, the SWPro system is designed to be both flexible and robust, providing a reliable solution for various industrial and commercial applications.
SKU: 3-750-004
Technical Specifications | |
---|---|
SKU | 3-750-004 |
Diameter | u00d8 750 |
Material | 316L Stainless Steel |
System | SWPro Modular Single Wall Flue System |
Approvals | CE (EN 1856-1) |
Temperature Applications | High and Low; Suitable for both Condensing & Non-condensing systems |
Clearance | 50mm from combustibles |
Installation | Push fit jointing with Locking Band; requires jointing gaskets at every joint |
Warranty | 10 Years |
Applicable Fuels | Gas, Oil |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, April 29th. If you need faster stove or fireplace delivery please give us a call. We can often 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. If you find it cheaper within 48 hours, we'll refund the difference.
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National Flues Ltd Verdict
The Non-concentric Increaser Ø 750 is a superb addition to any commercial flue system. With top-notch durability and universal applications, it's perfect for both retail and trade customers. Plus, National Flues guarantees reliable delivery nationwide.
The Non-concentric Increaser - Ø 750 is designed to enlarge the diameter of a flue system without causing condensate pooling, ideal for inclined runs.
National Flues is the UK’s leading supplier of fireplaces and flues, renowned for unbeatable prices and reliable nationwide delivery, serving both retail and trade customers with unmatched expertise and a wide range of high-quality products.
