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Sflue (2119706) - Increaser SW to TLPro 127mm-152mm Ø (22-125-002)

National Flues presents the Sflue Increaser SW to TLPro 127mm-152mm Ø, an ideal solution for enhancing flue performance. This premium accessory is designed for solid fuel and gas/oil appliances including wood stoves and boilers. With robust stainless steel construction and compliance with EN1856-1 standards, this product reflects superior craftsmanship and reliability. For those searching for a dependable flue system, the National Flues increaser offers performance, safety, and durability in one exceptional package.
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At a Glance

    Crafted from 304-grade outer and 316-grade inner stainless steel for superior durability

    0.40mm thick walls ensuring lightweight yet robust construction

    Complies with HETAS and CE standards for safety and quality

    Designed to increase flue diameter from 127mm to 152mm for various fuel appliances

    Features twist-lock couplers and locking band for secure installation

    Suitable for wood, oil, gas, and low sulphur coal applications

Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, July 21st. This is based on current lead times for this product. 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 on 01670 206 999. 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.

Best 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]

The Sflue (2119706) Increaser SW to TLPro 127mm-152mm Ø is an essential component for anyone operating solid fuel and gas/oil appliances such as wood stoves, gas coal effect fires, and boilers. Engineered with precision, the outer skin is crafted from 304-grade stainless steel with a 0.4mm thickness, while the inner skin is made from superior 316-grade stainless steel. This increaser ensures optimal performance and durability.

The insulation is compressed rockwool with a density of 230kg/m³, encapsulated within twist-lock couplers for extra reliability. The product is fully HETAS Approved, CE marked, and complies with EN1856-1 T450 N1 D V2 L50040 G50 standards. Easy to install using an 8-barbed twist-lock mechanism and locking band, it guarantees safety with a recommended 50mm distance from combustibles.

SKU: 22-125-002

Technical Specifications
SKU22-125-002
Product NameSflue (2119706) - Increaser SW to TLPro 127mm-152mm Ø
Inner Material316L Stainless Steel, 0.40mm thickness
Outer Material304 Stainless Steel, 0.40mm thickness
InsulationCompressed Rockwool (230kg/m³)
Installation Mechanism8-barbed twist-lock with locking band
Fuel CompatibilityWood, Oil, Gas, Low sulphur coal
CertificationsHETAS Approved, CE Marked
Standard ComplianceEN1856-1 T450 N1 D V2 L50040 G50
Minimum Clearance From Combustibles50mm
Warranty15 Years
Installation is straightforward yet critical for safe operation. First, ensure that all components are clean and free of debris. Start by attaching the increaser to the appliance outlet using the 8-barbed twist-lock mechanism. Secure the connection firmly with the provided locking band. It is crucial to maintain a minimum distance of 50mm between the flue’s outer surface and any combustible material. This spacing prevents heat transfer that could compromise surrounding structures. Follow any additional manufacturer guidelines included with your appliance to ensure complete compatibility and safety.

The Sflue Increaser is suitable for solid fuel and gas/oil appliances, including wood stoves, gas coal effect fires, and boilers.

The outer skin is made from 304-grade stainless steel, and the inner skin is made from 316-grade stainless steel, both with a 0.4mm thickness.

The insulation is compressed rockwool with a density of 230kg/m³, encapsulated within the twist-lock couplers.

Yes, the Sflue Increaser is HETAS Approved and CE marked.

The Sflue Increaser uses an 8-barbed twist-lock mechanism and is secured using a locking band. Ensure a 50mm distance from combustibles during installation.

You should maintain a 50mm distance from the outer surface of the flue to any combustible material such as wood or plasterboard.

The Sflue Increaser complies with the EN1856-1 T450 N1 D V2 L50040 G50 standards.

What our experts say!

"The Sflue Increaser SW to TLPro 127mm-152mm Ø is a top-notch choice for those needing dependable flue solutions for their solid fuel or gas/oil appliances. With Nationwide delivery and services catering to both retail and trade customers, National Flues ensures you get the best value and reliability."

The Sflue Increaser SW to TLPro 127mm-152mm Ø is used to increase the diameter of the flue from the appliance outlet for safe and optimal operation.

National Flues is a trusted supplier of premium fireplaces and flues, offering top-quality products at competitive prices with reliable nationwide delivery. Catering to both retail and trade customers, National Flues stands out for its customer-centric approach and secure online payment options.

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