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Reducer 2 diameters - Ø 750 (3-650-108)

National Flues presents the Reducer 2 Diameters - Ø750, a high-quality chimney flue adaptor designed to efficiently reduce flue diameters with superior performance. Crafted from premium 316L stainless steel, this reducer is a standout in the SWPro range, offering versatility and reliability for various applications including boilers, ovens, and ventilation systems. CE marked and compliant with EN 1856-1, the product is engineered for both condensing and non-condensing applications, making it a dependable choice for modern flue systems and chimney shaft liners.
Now only £1,429.99
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At a Glance

  • 316L Stainless Steel construction
  • High-pressure sealing gasket (P1/H1) for secure installation
  • Push-fit jointing system with locking band for enhanced safety
  • CE marked and compliant with EN 1856-1 standards
  • Versatile use for boilers, ovens, ventilation systems, and chimney shaft liners
  • Designed to reduce flue diameters from Ø750 to Ø650
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, August 14th. 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 Reducer 2 diameters - Ø 750 from the SWPro range at National Flues is a top-tier modular flue system designed for a variety of applications. Made from 316L grade stainless steel, this high-grade flue reducer seamlessly decreases the diameter of your flue system – ideal for boilers, ovens, ventilation systems, and chimney shaft liners. It stands out with a high-pressure sealing gasket (P1/H1), making it suitable for both high and low temperatures, as well as non-condensing and condensing applications.

Approved under EN 1856-1 standards, the SWPro flue system ensures safety and performance with its push-fit jointing system, complemented by a locking band for extra security. CE marked for quality, the SWPro flue reducer is a high-grade solution ensuring safe distances from combustible materials.

SKU: 3-650-108

Technical Specifications
Material316L Stainless Steel
DimensionsØ750 to Ø650 transition
Applicable StandardsEN 1856-1, CE marked
SystemSWPro
Fuel TypesGas, Oil
SealingHigh-pressure gasket (P1/H1)
Distance To Combustibles50mm
Warranty10 Years
InstallationPush-fit jointing system with locking band
• Ensure that all components are clean before installation to guarantee an optimal push-fit connection. • Verify that gaskets and locking bands are correctly positioned to prevent any potential leaks. • Follow manufacturer guidelines closely, particularly for P1 and H1 installations where proper sealing is critical. • Check surrounding distances to combustible materials; maintain at least 50mm clearance for safety. • If in doubt, consult with a qualified installer to ensure that the flue system meets both performance and safety standards.

The reducer is made from 316L grade stainless steel, ensuring high durability and resistance to corrosion.

Yes, the reducer is designed for both high and low temperature applications, making it extremely versatile.

This reducer is ideal for boilers, ovens, ventilation systems, and can also be used as a chimney shaft liner.

The reducer employs a push-fit jointing system secured by a locking band. Gaskets must be used in P1 and H1 installations.

Yes, this product is CE marked and compliant with EN 1856-1: T200 H1 W Vm L50040 O(50) standards.

Absolutely, it is suitable for both positive and negative pressure systems, making it highly adaptable for various setups.

Routine checks should be performed to ensure that the joint gaskets are intact and that the locking band is secure. Cleaning and inspection are recommended to maintain optimal performance.

What our experts say!

"At National Flues, we proudly recommend the Reducer 2 Diameters - Ø 750 for its exceptional quality and versatility. Suitable for both retail and trade customers, and delivered reliably nationwide."

The Reducer 2 Diameters - Ø 750 is used to decrease the diameter of chimney and flue systems, ensuring adaptability and efficiency in installation.

National Flues, a leading supplier of fireplaces and flues in the UK, is renowned for offering competitive pricing, reliable delivery, and exceptional quality to both retail and trade customers nationwide.

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