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Tee 90° reduced connection Ø 150 - Ø 400 (3-400-R90-150)

Discover National Flues' high-grade Tee 90° Reduced Connection Ø150 - Ø400, a premium stainless steel flue component ideal for cascade header systems. Designed for boilers, ovens, and ventilation applications, this robust, CE marked accessory guarantees superior performance and reliability. Perfectly suited for both trade and retail customers across the UK, our product offers an unbeatable blend of quality, safety, and efficiency.
The price you pay today £430.99
including free delivery Give us a call if you find it cheaper and we'll normally price match.

 

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At a Glance

    Constructed from premium 316L stainless steel for exceptional durability
    CE marked and compliant with EN 1856-1 standards
    Features a high-pressure sealing gasket for secure, leak-proof performance (P1/H1)
    Easy push-fit jointing system secured by a robust Locking Band
    Ideal for cascade header systems, boilers, ovens, and ventilation installations
    Designed with a safe 50mm clearance from combustible materials
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, June 27th. 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:

  • 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 Tee 90° Reduced Connection Ø150 - Ø400 is a premium component of the SWPro modular single wall flue system. Crafted from 316L grade stainless steel, it offers exceptional durability and resilience across a wide range of applications. This includes boilers, ovens, ventilation systems, and chimney shaft liners.

The high-pressure sealing gasket (P1/H1) ensures a leak-proof jointing system. Approved and CE marked, it meets the strict standards of EN 1856-1 for various diameters. The SWPro system is known for its ease of installation, featuring a push-fit jointing system secured with a Locking Band.

It requires jointing gaskets for P1 and H1 installations and maintains a safe 50mm distance from combustible materials.

SKU: 3-400-R90-150

Technical Specifications
Material316L Stainless Steel
Connection Angle90°
Input DiameterØ150
Output DiameterØ400
ApprovalsCE Marked; Compliant with EN 1856-1
SealingHigh-pressure gasket (P1/H1)
InstallationPush-fit jointing system with Locking Band
Clearance50mm from combustibles
ApplicationsBoilers, Ovens, Ventilation Systems, Chimney Shaft Liners
Warranty10 Years
When installing the Tee 90° Reduced Connection, ensure that joint gaskets are used for every connection in P1 and H1 installations. The push-fit jointing system is simple to use – simply insert the component and secure it with the Locking Band. Always maintain a minimum clearance of 50mm from the flue to any combustible materials such as wood or plasterboard. Although the system is designed for ease of installation, it is advisable to consult a professional if you are uncertain about any aspect of the assembly process.

This Tee is suitable for various applications including boilers, ovens, ventilation systems, and as a chimney shaft liner.

Yes, the Tee 90° Reduced Connection Ø150 - Ø400 is CE marked and complies with EN 1856-1 standards.

It is made from high-grade 316L stainless steel, ensuring long-lasting durability and performance.

The Tee features a push-fit jointing system that is secured with a Locking Band. For P1 and H1 installations, joint gaskets must be used in every joint.

No, this Tee is not suitable for condensing systems.

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

The high-pressure sealing gasket is rated for P1/H1 applications.

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