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Non-concentric increaser - Ø 400 (3-400-004)

National Flues proudly presents the Non-concentric Increaser Ø 400 from the renowned SWPro series. This high-performance flue system component, engineered from robust 316L Stainless Steel, is perfect for commercial and residential applications alike. Whether upgrading boilers, ovens, or ventilation setups, this increaser provides a reliable, CE marked solution that ensures efficient gas flow while maintaining safe distance from combustible materials. Discover a seamless, modular installation system that integrates effortlessly into your existing flue configuration.
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£241.99
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

  • Crafted from high-grade 316L Stainless Steel
  • Designed for both high and low temperature applications
  • Features a secure push-fit jointing system with Locking Bands
  • CE marked and compliant with EN 1856-1 standards
  • Provides a 50mm combustion clearance for enhanced safety

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).

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Have Questions?
Phone: 01670 206999
Email: [email protected]

The Non-concentric Increaser Ø400 from our esteemed SWPro collection is designed to meet a wide array of flue system requirements. Fabricated from high-grade 316L stainless steel, this increaser boasts remarkable durability and reliability. With its high-pressure sealing gasket (P1/H1), it's an excellent choice for both high and low-temperature environments, accommodating positive and negative pressure flue gases.

This increaser easily integrates into your existing system, thanks to its modular, push-fit jointing system that ensures secure connections with Locking Bands. Perfect for use in boilers, ovens, ventilation systems, and even as a chimney shaft liner, the SWPro Non-concentric Increaser Ø400 is CE marked and complies with a range of European standards. For optimal safety, make sure to keep a 50mm distance from any combustible materials during installation.

SKU: 3-400-004

Technical Specifications
ItemNon-concentric Increaser u00d8 400
Material316L Stainless Steel
SystemSWPro
StandardEN 1856-1 (T200 H1, W Vm, L50040/O(50)-u00d880 up to u00d8200, u00d8250 up to u00d8400)
ApprovalsCE Marked
GasketHigh-pressure sealing gasket (P1/H1)
ApplicationBoilers, ovens, ventilation systems, chimney shaft liners
Clearance50mm from combustible materials
Warranty10 Years
Installation is straightforward using the modular push-fit jointing system. Ensure each connection is fitted with jointing gaskets for both P1 and H1 configurations. It is crucial to maintain a minimum clearance of 50mm from all combustible materials to ensure optimal safety. Secure the increaser with the provided Locking Bands to guarantee a robust and leak-tight connection. Always refer to the installation manual for detailed step-by-step guidance and adhere to local building regulations.

The increaser is crafted from high-grade 316L stainless steel, ensuring superior durability and resistance to corrosion.

It is suitable for a wide range of applications including boilers, ovens, ventilation systems, and as a chimney shaft liner.

The increaser is CE marked and complies with EN 1856-1 standards for various temperature and pressure conditions.

Yes, it features a push-fit jointing system secured by a Locking Band for easy and reliable installation.

Ensure a 50mm distance from any combustible materials like wood or plasterboard to maintain safety.

Yes, jointing gaskets should be fitted on every joint in P1 and H1 installations to ensure a secure and efficient seal.

The term ‘non-concentric’ refers to its design, which allows for diameter increase without causing pooling of condensates, ideal for inclined installations.
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 Non-concentric increaser - Ø 400 buyers guide

Secure your Non-concentric Increaser Ø 400 today for a robust and compliant flue system solution.

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