Non-concentric increaser - Ø 100
At a Glance
- Constructed from high-grade 316L stainless steel for lasting durability
- Complies with EN 1856-1 standards and is CE marked for industry-standard safety
- Versatile design suitable for both condensing and non-condensing applications
- Modular push-fit joint system secured with Locking Bands enables fast and reliable installation
- High-pressure sealing gaskets ensure leak-free connections and prevent condensate issues

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 100 from our SWPro range is an essential component for increasing flue diameters in various inclined heating and ventilation systems. Constructed from high-grade 316L stainless steel, this increaser ensures durability and resistance to high temperatures. It's ideal for both high and low-temperature applications, including non-condensing and condensing systems.
Our modular flue system features easy push-fit joints secured with Locking Bands, guaranteeing a quick and secure installation. Each joint includes a high-pressure sealing gasket to accommodate P1 and H1 installations, preventing any potential condensate pooling. The system is CE marked and conforms to EN 1856-1 standards, ensuring optimal performance and safety.
Designed for use in boilers, ovens, ventilation systems, and as a chimney shaft liner, it offers versatile, reliable solutions for both positive and negative pressure scenarios.
SKU: 3-100-004
Technical Specifications | |
---|---|
Material | 316L Stainless Steel |
Diameter | u00d8 100 |
Applicable Standards | EN 1856-1, CE marked |
System | SWPro Modular Flue |
Applications | Boilers, Ovens, Ventilation Systems, Chimney Shaft Liners |
Temperature Range | Suitable for both high and low-temperature applications |
Sealing | High-pressure sealing gasket included for secure jointing |
Installation Method | Push-fit joints secured with Locking Bands |
Clearance Requirement | Minimum 50mm distance to combustible materials |
Warranty | 10 Years |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, April 28th. 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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
At National Flues, we highly recommend the Non-concentric Increaser - Ø 100 for its superior construction and versatile application. Whether you're in retail or trade, you'll benefit from our reliable nationwide delivery and competitive pricing.
The Non-concentric Increaser - Ø 100 is used to increase the diameter of a flue system while maintaining efficiency and preventing condensate buildup.
National Flues is a trusted supplier of fireplaces and flues, committed to offering competitive prices and reliable nationwide delivery to retail and trade customers alike.
