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Non-concentric increaser 2 diameters - Ø 350 (3-350-104)

Enhance your commercial chimney flue system with the Non-Concentric Increaser 2 Diameters - Ø350 by National Flues. Designed in strict accordance with EN 1856-1 standards and CE marked for safety, this high-grade 316L Stainless Steel component is ideal for both condensing and non-condensing applications. Whether used in boilers, ovens, or ventilation systems, our increaser ensures reliable performance and improved system safety by effectively managing dual diameters and preventing condensate pooling.
£527.77
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 316L Stainless Steel for exceptional durability and resistance to high pressure
    Modular push fit jointing system secured with a Locking Band for a reliable seal
    Compliant with EN 1856-1 and CE marked for safety and quality assurance
    Versatile application: suitable for boilers, ovens, ventilation systems, and chimney shaft liners
    Designed to prevent condensate pooling in inclined piping runs by accommodating two diameters
    Engineered for both condensing and non-condensing applications
    Maintains a safe 50mm distance from combustible materials during installation
    Backed by a 10-year warranty for long-term peace of mind

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.

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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.
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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 2 diameters - Ø 350 is an essential component in the SWPro modular single wall flue system. Crafted from durable 316 grade stainless steel, it ensures longevity and resistance to high pressure, both in condensing and non-condensing applications. The SWPro system is versatile and can be integrated into various applications such as boilers, ovens, ventilation systems, and chimney shaft liners.

With CE marking and compliance with EN 1856-1 standards, this increaser is designed for optimal performance. Its modular push fit jointing system, secured with a Locking Band and high-pressure sealing gaskets, ensures seamless installation. Ensure a safe distance of 50mm from any combustible materials when installing.

SKU: 3-350-104

Technical Specifications
Material316L Stainless Steel (Inner), N/A (Outer)
Diameteru00d8350 (2 diameters u2013 u00d8350 to u00d8350)
StandardsEN 1856-1, CE Marked
SystemSWPro Modular Push Fit Jointing
ApprovalCE
Distance To Combustibles50mm
Warranty10 Years
ApplicationSuitable for condensing and non-condensing systems; used in boilers, ovens, and ventilation systems
• Ensure that the increaser is installed with a minimum 50mm clearance from all combustible materials. • Use the modular push fit jointing system along with the provided Locking Band and high-pressure sealing gaskets. • Fit jointing gaskets on every joint, especially for P1 and H1 installations, to ensure secure, leak-free connections. • Carefully follow the installation guidelines to accommodate the dual diameters and avoid condensate pooling, especially in inclined piping runs. • It is essential to refer to the detailed installation manual provided with the product to maintain compliance with EN 1856-1 standards.

The increaser is made of high-grade 316L Stainless Steel, ensuring durability and high resistance to pressure.

Yes, the increaser is CE marked, complying with EN 1856-1 standards for safety and quality.

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

The Non-Concentric Increaser uses a modular push fit jointing system secured with a Locking Band, and jointing gaskets must be fitted on every joint for P1 and H1 installations.

The increaser supports both high and low-temperature applications, suitable for condensing and non-condensing environments.

Ensure there is a distance of 50mm from the outside of the flue to any combustible materials such as wood or plasterboard.

Choosing our increaser means reliable and durable products with competitive pricing and dependable nationwide delivery. We cater to both retail and trade customers, ensuring satisfaction across the board.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, May 12th. 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 2 diameters - Ø 350 buyers guide

Secure your Non-Concentric Increaser today for unmatched quality and reliable performance.

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