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Reducer - Ø 100 (3-80-008)

National Flues presents the Reducer - Ø 100, a premium stainless steel flue reducer designed for optimal performance and durability. This high-quality component is perfect for reducing flue diameters in systems for boilers, ovens, and ventilation. Compliant with EN 1856-1 standards and CE marked for safety, it ensures reliable performance in both condensing and non-condensing applications, making it a top choice for trade and retail customers alike.
The price you pay today £55.99
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At a Glance

    Constructed from high-grade 316L Stainless Steel
    Modular push-fit jointing system with secure Locking Band
    CE marked and compliant with EN 1856-1 standards
    Versatile for both high and low temperature applications
    Provides reliable performance in positive and negative pressure environments
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, June 9th. 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]

The Reducer - Ø 100 is a versatile component designed for optimizing flue systems by reducing the diameter of proceeding pipes. Perfect for boilers, ovens, ventilation systems, and chimney shaft liners, this reducer caters to both high and low temperature settings. Crafted from high-grade 316L stainless steel, it ensures longevity and resistance to corrosion.

The SWPro installation framework features a modular, push-fit jointing system, bolstered by a secure Locking Band, offering reliable and straightforward assembly. Approved with CE marking and meeting the stringent EN 1856-1 standards, this reducer ensures top-notch performance in both positive and negative pressure environments. Remember to maintain a 50mm clearance from combustible materials during installation.

SKU: 3-80-008

Technical Specifications
Material316L Stainless Steel (Inner Material)
Outer MaterialN/A
StandardsEN 1856-1, CE Marked
Installation SystemSWPro with modular, push-fit jointing
Pressure EnvironmentsSuitable for both positive and negative pressure
Temperature RangeHigh and low temperature applications
Clearance Requirement50mm distance from combustible materials
Warranty10 Years
Compatible FuelsGas, Oil
Diameter TransitionReducer - u00d8 100 for converting larger diameters (e.g., 150ID to 130ID)
• Ensure all connections are clean and free of debris before assembly. • Apply gaskets on each joint in P1 and H1 installations to secure the push-fit system. • Use the secure Locking Band to reinforce joint integrity. • Maintain a minimum clearance of 50mm from any combustible materials during installation. • For optimal performance, periodically inspect the reducer and connections for any signs of wear or corrosion.

The Reducer - Ø 100 is constructed from high-grade 316L stainless steel, ensuring durability and resistance to corrosion.

The reducer is ideal for a wide range of applications including boilers, ovens, ventilation systems, and as a chimney shaft liner.

Yes, the Reducer - Ø 100 is CE marked and adheres to the EN 1856-1 standards.

The Reducer - Ø 100 uses a modular, push-fit jointing system secured by a Locking Band. Ensure to fit gaskets on each joint in P1 and H1 installations, and maintain a 50mm clearance from combustible materials.

The Reducer - Ø 100 is suitable for both positive and negative pressure environments, making it a versatile choice for various flue systems.

Yes, the reducer is designed to handle both condensing and non-condensing applications effectively.

The SWPro system covers a range of diameters from Ø 80 to Ø 400, ensuring a solution for various installation needs.

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