Increaser 3 diameters - Ø 125 (3-125-202)
At a Glance
- High-quality 316L stainless steel construction
Increases flue diameter by three increments
Versatile use for boilers, ovens, ventilation, and chimney shafts
Push-fit assembly with secure Locking Band
Compliant with EN 1856-1 and CE marked standards
Suitable for both high and low temperature applications
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, June 20th. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. 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.
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 Increaser 3 diameters - Ø 125 from National Flues is a versatile and modular single wall flue system designed to meet a broad range of needs. Manufactured from high-grade 316L stainless steel, this product is durable and suitable for non-condensing and condensing applications with both positive and negative pressure. It excels in high and low-temperature environments, making it ideal for boilers, ovens, ventilation systems, and as a chimney shaft liner.
CE marked and EN 1856-1 compliant, the SWPro system is easy to install using a push-fit jointing system secured with a Locking Band. Each joint needs a sealing gasket to ensure high-pressure safety.
SKU: 3-125-202
| Technical Specifications | |
|---|---|
| Material | 316L Stainless Steel |
| System | SWPro |
| Compliances | EN 1856-1, CE |
| Size | u00d8 125 |
| Application | Boilers, Ovens, Ventilation, Chimney Shaft Liner |
| Temperature Range | High & Low |
| Jointing | Push-fit with Locking Band & sealing gaskets |
| Distance To Combustibles | 50mm |
| Warranty | 10 Years |
