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Increaser 2 diameters - Ø 700 (3-700-102)

The National Flues Increaser 2 Diameters - Ø 700 is a high-quality chimney flue adaptor designed to meet the rigorous demands of both commercial and residential installations. Crafted from premium 316L stainless steel and featuring a state-of-the-art push-fit joint system, this product is an ideal solution for upgrading your flue system. Compatible with the SWPro modular system, it promises enhanced efficiency and reliability, making it a preferred choice for applications involving boilers, ovens, and modern ventilation systems.
£955.99
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

    Made from high-grade 316L stainless steel for long-lasting durability
    Designed with a smart push-fit jointing system for quick and secure installation
    CE marked and compliant with EN 1856-1 for assured quality and safety
    Equipped with a high-pressure sealing gasket and locking band for a reliable, tight fit
    Versatile design suitable for non-condensing and condensing flue gas applications across boilers, ovens, and ventilation systems

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:

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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.

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

The Increaser 2 diameters - Ø 700 is an essential part of the SWPro modular single wall flue system, crafted from high-grade 316L stainless steel which ensures durability and reliability. Suitable for both high and low temperature applications, it effectively handles non-condensing and condensing flue gases under positive and negative pressure. Ideal for a wide range of functions including boilers, ovens, ventilation systems, and as a chimney shaft liner.

It comes with a high-pressure sealing gasket, boasting a CE mark for quality and compliance with EN 1856-1 standards. The smart push-fit jointing system, along with a locking band and joint gaskets, guarantees a secure fit while maintaining a mandatory 50mm distance from any combustible material.

SKU: 3-700-102

Technical Specifications
Material316L Stainless Steel
SystemSWPro Modular Flue System
StandardsCE Marked, EN 1856-1 Compliant
ApplicationsBoilers, Ovens, Ventilation Systems, Chimney Shaft Liners
Temperature RangeHigh and Low Temperature Applications
PressureSuitable for both positive and negative pressure environments
Distance To Combustibles50mm
Warranty10 Years
Ensure that a minimum clearance of 50mm is maintained between the flue and any combustible materials. The product features an intuitive push-fit jointing system which should be secured with the provided locking band and joint gaskets at every connection. Always follow the prescribed installation guidelines to meet P1 and H1 installation requirements. Double-check that the high-pressure sealing gasket is properly seated to prevent any potential leaks or pressure loss. In cases where the flue system is subject to varying pressures, it is crucial to re-verify all joint connections after installation.

The increaser is made from high-grade 316L stainless steel, offering excellent durability and reliability.

It is suitable for various applications including boilers, ovens, ventilation systems, and chimney shaft liners.

The increaser is suitable for both high and low temperatures, and can handle non-condensing and condensing flue gasses in both positive and negative pressures.

Yes, it is CE marked and complies with EN 1856-1 standards.

Ensure a 50mm distance from the outside of the flue to any combustible material, and use jointing gaskets in every joint for P1 and H1 installations.

It features a push-fit jointing system secured by a locking band for a secure fit.

316L stainless steel is known for its high resistance to corrosion and high-temperature strength, making it ideal for flue systems.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, May 16th. 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 2 diameters - Ø 700 buyers guide

Don’t miss out – secure your Increaser 2 Diameters today for unmatched performance and reliability!

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