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Increaser 3 diameters - Ø 400 (3-400-202)

National Flues presents the Increaser 3 Diameters - Ø 400, a top-tier chimney flue adaptor engineered to expand your flue system effortlessly. Ideal for boilers, ovens, and ventilation systems, this product, part of the SWPro modular system, is renowned for its reliability and safety. As a trusted brand in the UK, National Flues ensures that every product meets rigorous standards and performs exceptionally well in both condensing and non-condensing flue applications.
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£540.99
with free delivery Give us a call if you find it cheaper and we'll try to price match.

 

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At a Glance

  • High-grade 316L stainless steel construction
  • Designed for both high and low temperature applications
  • CE marked for European standard compliance
  • Push-fit jointing system secured with a locking band
  • Versatile use in boilers, ovens, and ventilation systems
  • Ensures a 50mm clearance from combustible materials

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 Increaser 3 diameters - Ø 400 is a versatile and high-performing flue adaptor designed for various applications. Crafted with 316L grade stainless steel, this increaser ensures durability and high resistance against corrosion. It's part of the SWPro modular single wall flue system that's suitable for both high and low temperature environments, and is compatible with non-condensing and condensing applications where flue gases are in positive and negative pressure.

This CE-marked product adheres to rigorous standards and ensures safe and efficient operation. With a push-fit jointing system secured by a locking band, installation is straightforward and secure, making it ideal for both DIY enthusiasts and professionals. Please ensure a 50mm clearance from combustible materials for safety.

SKU: 3-400-202

Technical Specifications
SKU3-400-202
Material316L Stainless Steel
ApprovalsCE Marked
Clearance50mm from combustibles
SystemSWPro Modular Single Wall Flue
FuelsGas, Oil
Warranty10 Years
StandardsEN 1856-1
The installation of the Increaser 3 Diameters - Ø 400 is straightforward and secure. Begin by ensuring that all surfaces are clean and free from debris. The unit utilises a push-fit jointing system, which is secured with a locking band that provides stability and helps prevent leakage. For both P1 and H1 installations, it is imperative to install a jointing gasket on every connection. Additionally, maintain a clear 50mm distance from any combustible materials to ensure safety in compliance with EN 1856-1 standards. Always consult the installation manual and, if necessary, seek professional advice to guarantee a correct and secure setup.

The increaser is constructed from high-grade 316L stainless steel, known for its corrosion resistance and durability.

Yes, the product is CE marked, ensuring it meets European safety, health, and environmental protection standards.

The increaser is perfect for use in boilers, ovens, ventilation systems, and as a chimney shaft liner.

The increaser is designed for both high and low temperature flue gases, compatible with non-condensing and condensing applications.

The increaser uses a push-fit jointing system secured with a locking band. Jointing gaskets must be installed on every joint for P1 and H1 installations, and a 50mm distance from combustible materials must be maintained.

The SWPro system, including this increaser, is designed for both positive and negative pressure applications.

Yes, National Flues offers reliable nationwide delivery for all our products, including the Increaser 3 Diameters - Ø 400.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, May 1st. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call. If you need faster stove or fireplace delivery please also 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. Mi-Flex offers a lifetime guarantee. 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.

Read our review in our Increaser 3 diameters - Ø 400 buyers guide

Secure your Increaser 3 Diameters - Ø 400 today to ensure optimal performance for your flue system.

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