Free Delivery over £100+ 5on Trustpilot Browse our popular stoves Fast Mainland UK Delivery Buy stoves with install packs Call 01670 206 999 for help

TWPro GREY - Increaser SW to TWPro - Ø 125-150mm (17-125-002)

Enhance your chimney system with the TWPro GREY Increaser – a high-quality adaptor designed to connect single wall stove pipes with twin wall flue systems. This TWPro solution is ideal for various appliances, including wood stoves, oil boilers, gas fires, and low sulphur coal units, offering a durable, HETAS-approved, and CE marked product. Read more...
Now only £172.99
including free delivery Give us a call if you find it cheaper and we'll normally price match.
  • Fast deliveryFriday, November 14th*
  • Best PriceCall us to beat any price you found online.
  • Secure checkoutCard· Google/Apple Pay· Klarna· Paypal

 

Payment Options

At a Glance

  • Connects single wall stove pipes to twin wall chimney systems
  • Constructed with dual stainless steel layers (304 outer, 316L inner) at 0.40mm thickness
  • Fully welded for enhanced durability
  • Complies with HETAS and CE standards
  • Insulated with compressed rockwool (200kg/m3) for optimal thermal efficiency
  • Designed for use with wood, oil, gas, and low sulphur coal appliances

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: sales@nationalflues.com

The TWPro GREY Increaser SW to TWPro - Ø 125-150mm is a crucial component for enhancing your chimney system, designed to connect single wall stove pipes to twin wall chimney systems seamlessly. Constructed with an outer skin of 304 grade stainless steel and an inner skin of 316 grade stainless steel, both 0.4mm thick, this adaptor guarantees durability and high performance. It features compressed rockwool insulation with a density of 200kg/m3 to ensure optimal thermal efficiency and safety.

The product is fully welded, reinforcing its robustness. The TWPro system is HETAS approved and CE marked, assuring you of its quality and compliance with regulations such as EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20. Installation is straightforward with the use of a locking band, and a mandatory 50mm clearance from combustibles is required for safety.

Ideal for various appliance types including wood stoves, gas fires, and oil boilers.

SKU: 17-125-002

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, November 14th. This is based on current lead times. Bear in mind that it is a busy time of year. If you need a product delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. Visit our Shipping Information page for more information.

About National Flues Ltd +

We began over 30 years ago as a fireplace shop in the North East. We now supply hundreds of trade professionals and thousands of retail customers, all across the UK, every month. We are still a family owned business, lead by the MD Neil, and always try our best to deliver the best possible experience. We also price match, so give us a call if you find this cheaper and want to buy from us. Visit our about us page to read a bit more.

Technical Specifications
Product ID2663
SKU17-125-002
SizeØ 125-150mm
Outer Material304 Stainless Steel (0.40mm thick)
Inner Material316L Stainless Steel (0.40mm thick)
InsulationCompressed Rockwool (200kg/m3)
CertificationsHETAS, CE
StandardsEN1856-1 T600 N1 W V2 L50040 G50; EN1856-1 T200 W V2 L50040 O20
Minimum Clearance50mm from combustibles
• Ensure a minimum clearance of 50mm from any combustibles for safe installation. • Secure the adaptor firmly using the provided locking band to achieve a seamless and secure transition. • Follow the manufacturer's guidelines closely and always double-check all connections before use. • For optimal performance, inspect the installation periodically and maintain the integrity of the insulation.

This increaser adaptor is compatible with solid fuel and gas/oil appliances including wood stoves, gas coal effect fires, and oil and gas boilers.

The increaser features an outer skin made from 304 grade stainless steel and an inner skin made from 316 grade stainless steel, both with a thickness of 0.4mm. The insulation is made from compressed rockwool.

Yes, the TWPro GREY Increaser is HETAS approved and CE marked, complying with UK standards and regulations.

Installation is simple; secure the parts together using a locking band and maintain a minimum distance of 50mm from combustibles.

The product meets safety standards EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20.

The rockwool insulation has a density of 200kg/m3, providing excellent thermal efficiency.

It is best to check with National Flues directly for warranty information on this product.

 

Call the Experts   8am-5pm
👀 6 people watching this