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Tee 90° - Ø 800 (3-800-035)

Discover the high-quality Tee 90° - Ø 800 by National Flues, engineered to deliver exceptional performance in robust flue systems. This expertly crafted flue component, made from 316L stainless steel, is designed for reliable performance in boilers, ovens, ventilation systems, and chimney shaft liners. Whether you are dealing with condensing or non-condensing applications, the Tee 90° - Ø 800 ensures a secure, leak-proof connection and robust durability – making it a top choice for both commerci Read more...
The price you pay today £1,613.99
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At a Glance

    Crafted from high-grade 316L Stainless Steel for exceptional durability and corrosion resistance.
    Features a high-pressure sealing gasket (P1/H1) for secure, leak-proof performance.
    Versatile 90° flue connection suitable for both condensing and non-condensing applications.
    Utilises a user-friendly push-fit jointing system with a robust Locking Band for effortless installation.
    Compliant with EN 1856-1 standards and CE marked for quality assurance.
    Ideal for a wide range of applications including boilers, ovens, ventilation systems, and chimney shaft liners.
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.

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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.

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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 Tee 90° - Ø 800 from our SWPro range is a modular single wall flue system, crafted from durable 316L grade stainless steel. This high-performing flue component comes equipped with a high-pressure sealing gasket (P1/H1), making it suitable for both condensing and non-condensing applications. It can handle both high and low temperatures, and is ideal for various applications such as boilers, ovens, ventilation systems, and chimney shaft liners.

The Tee 90° piece is designed to create a 90° connection within the system, and it can also serve as an access or inspection point when paired with a Tee Cap. Installation is straightforward with a push-fit jointing system secured by a Locking Band. For P1 and H1 installations, jointing gaskets must be used on every joint.

Ensure a safe 50mm distance from any combustible materials (like wood or plasterboard) for optimal safety.

SKU: 3-800-035

Technical Specifications
Material316L Stainless Steel (Inner)
Outer MaterialN/A
ApplicationBoilers, Ovens, Ventilation Systems, Chimney Shaft Liners
InstallationPush-fit jointing with Locking Band; requires jointing gaskets for P1/H1 setups
ApprovalsCE Marked, Complies with EN 1856-1
Operating TemperatureDesigned for both high and low temperature operations
Combustible DistanceMinimum 50mm clearance from combustible materials
Warranty10 Years
• For every P1 and H1 installation, ensure that jointing gaskets are fitted onto every joint to maintain optimal sealing performance. • Assemble using the push-fit method and secure all connections firmly with the Locking Band provided. • Maintain a minimum 50mm clearance from combustible materials such as wood or plasterboard to ensure safety. • When used as an access or inspection point, pair with a Tee Cap to facilitate easier maintenance and inspection. • Follow all manufacturer’s guidelines and local building regulations to ensure a safe and compliant installation.

The Tee 90° - Ø 800 is made of high-grade 316L Stainless Steel.

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

Yes, the SWPro system, including the Tee 90° - Ø 800, is CE marked and complies with relevant standards.

The Tee 90° - Ø 800 should be installed using a push-fit jointing system secured by a Locking Band. For P1 and H1 installations, jointing gaskets must be fitted on every joint.

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

Yes, the Tee 90° - Ø 800 is suitable for both condensing and non-condensing applications.

The Tee 90° - Ø 800 uses a push-fit jointing system secured together by a Locking Band.

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