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Tee 90° - Ø 650 (3-650-035)

National Flues delivers superior quality flue connectors like the Tee 90° - Ø 650, the ultimate choice for creating robust 90° connections in boilers, ovens, and ventilation systems. This high-quality stainless steel component, also known as a flue tee or duct accessory, ensures safe, efficient and reliable installation. Trusted by professionals across the UK, our product meets rigorous industry standards, making it the ideal solution for both residential and commercial applications.
The price you pay today £1,164.99
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At a Glance

    Crafted from premium 316L stainless steel
    Modular design with a push-fit jointing system
    High-pressure sealing gasket for secure connections
    CE marked and compliant with EN 1856-1 standards
    Versatile use for boilers, ovens, ventilation systems, and chimney liners
    Can serve as an access or inspection point when paired with a Tee Cap
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, June 13th. 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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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.

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 Tee 90° - Ø 650 is part of the SWPro modular single wall flue system, crafted from premium 316 grade stainless steel. With a high-pressure sealing gasket P1/H1, this universal flue system accommodates both high and low-temperature environments. Whether for non-condensing or condensing applications, the Tee 90° - Ø 650 is ideal for boilers, ovens, ventilation systems, and even as a chimney shaft liner.

Designed to maintain structural integrity and safety, this tee features a robust construction, with varying thicknesses based on flue diameter. It is CE marked, adhering to the rigorous standards of EN 1856-1: T200 H1 W Vm L50040 O(50) for Ø 80 to Ø 200, and T200 H1 W Vm L50050 O(50) for Ø 250 to Ø 400. Installation is streamlined with a push-fit jointing system secured by a Locking Band.

Ensure proper installation by fitting jointing gaskets on every joint and maintaining a safe 50mm distance from any combustible material.

SKU: 3-650-035

Technical Specifications
Material316L Stainless Steel
Dimensionsu00d8 650
ComplianceEN 1856-1, CE Marked
Temperature RangeSuitable for both high and low-temperature environments
SealHigh-pressure sealing gasket (P1/H1)
Jointing SystemModular push-fit secured by a Locking Band
InstallationRequires jointing gaskets on every connection
SafetyMaintain 50mm clearance from combustible materials
For optimal performance, measure accurately and ensure all push-fit connections are secure. Always fit a jointing gasket at every connection in both P1 and H1 installations to guarantee a weather-tight assembly. Maintain a minimum distance of 50mm from any combustible material to ensure safety. Consider pairing this Tee with a Tee Cap for added access and inspection functionality. Follow the manufacturer’s installation instructions carefully to ensure compliance with EN 1856-1 and local building regulations.

The Tee 90° - Ø 650 is suitable for boilers, ovens, ventilation systems, and can also be used as a chimney shaft liner.

The Tee 90° - Ø 650 is crafted from high-grade 316L stainless steel.

Yes, the Tee 90° - Ø 650 is CE marked and meets EN 1856-1 standards.

The Tee 90° - Ø 650 is installed using a modular push-fit jointing system secured by a Locking Band. Jointing gaskets must be fitted on every joint in P1 and H1 installations.

A safe distance of 50mm from the outside of the flue to any combustible material (wood, plasterboard, etc.) must be maintained.

Yes, the Tee 90° - Ø 650 is suitable for both high and low-temperature applications, including non-condensing and condensing environments.

The Tee 90° - Ø 650 complies with EN 1856-1: T200 H1 W Vm L50040 O(50) for Ø 80 to Ø 200 and T200 H1 W Vm L50050 O(50) for Ø 250 to Ø 400.

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