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Lid with drain - Ø 650 (3-650-037)

At National Flues, our Lid with Drain - Ø 650 is a leading choice among professionals seeking premium chimney components. This high-performance flue drainage lid, crafted from 316L stainless steel, is an ideal accessory for boilers, ovens, and ventilation systems. As a trusted brand in the UK, National Flues delivers products that are both durable and efficient, making this lid a perfect match for any modern flue system. Its precise BSP connection facilitates effortless drainage setup, reinforci Read more...
The price you pay today £443.99
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At a Glance

    316L Stainless Steel Construction for superior durability
    Designed for high and low temperature applications including condensing systems
    CE marked and compliant with EN 1856-1 standards
    Features a stainless steel BSP connection for optimal drainage
    Easy installation with a push-fit jointing system and Locking Band
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:

  • Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
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  • Operational Efficiency: We have streamlined processes to reduce overhead.

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 Lid with drain - Ø 650 is an essential component of the SWPro line, designed to be installed at the bottom of a vertical flue run, often beneath a tee junction. Constructed from 316L grade high-quality stainless steel, this product ensures durability and longevity. It features a high-pressure sealing gasket P1/H1, making it suitable for a variety of settings, including high and low temperature scenarios and both condensing and non-condensing applications.

The SWPro modular single wall flue system is ideal for use with boilers, ovens, ventilation systems, and as a chimney shaft liner. It has thorough CE marking, adhering to EN 1856-1 standards, ensuring its safety and efficiency. This lid includes a stainless steel BSP connection to facilitate efficient drainage via connected pipework, and the push-fit jointing system with a Locking Band ensures secure and simple installation.

SKU: 3-650-037

Technical Specifications
SKU3-650-037
DiameterØ 650mm
Material316L Stainless Steel
ApplicationsBoilers, ovens, ventilation systems, chimney shaft liner
ApprovalsCE marked, EN 1856-1
Distance To Combustibles50mm
Warranty10 Years
SystemSWPro
• Position the Lid with Drain at the bottom of a vertical flue run, ideally beneath a tee junction. • Ensure that a high-quality gasket is fitted at every joint to maintain the required P1/H1 sealing standard. • Maintain a minimum distance of 50mm between the flue and any combustible materials to comply with safety guidelines. • Use the push-fit jointing system and secure it with the Locking Band to ensure a robust and leak-free setup. • Follow the complete installation manual and safety instructions provided to avoid any installation errors or hazards.

It is made of 316L grade high-quality stainless steel, ensuring durability and resistance to corrosion.

The lid with drain should be installed at the bottom of a vertical flue run, typically beneath a tee fitting to facilitate efficient drainage.

Yes, the Lid with Drain is designed to be compatible with both high and low temperature applications, and it works with both condensing and non-condensing systems.

The Lid with Drain is CE marked and conforms to EN 1856-1 standards, meeting all safety and efficiency requirements.

It features a push-fit jointing system secured with a Locking Band. Ensure that a gasket is fitted on every joint for P1 and H1 installations, and maintain a 50mm distance from any combustible materials.

The Lid with Drain in question has a diameter of Ø 650mm.

Yes, it is suitable for boilers, ovens, ventilation systems, and as a chimney shaft liner, among other uses.

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