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Lid with drain - Ø 300 (3-300-037)

National Flues presents the Lid with Drain - Ø 300, a premium chimney flue accessory designed for durability and performance. Made from 316L stainless steel, this high-quality lid is perfect for both condensing and non-condensing setups. As an essential addition to any modular single wall flue system, it ensures efficient drainage and long-lasting reliability. Whether you are looking for chimney accessories, drainage solutions, or high-performance flue system components, this product is tailored Read more...
The price you pay today £98.99
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At a Glance

    316L Stainless Steel construction for durability and heat resistance
    High-pressure sealing gasket (P1/H1) suitable for both condensing and non-condensing applications
    Modular push-fit jointing system with a secure locking band
    Integrated stainless steel BSP connection for easy drainage pipework attachment
    CE-marked and compliant with EN 1856-1 standards
    Designed specifically for vertical chimney flue systems
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, June 17th. 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 Lid with drain - Ø 300 from National Flues is an essential component for modular single wall flue systems. Crafted from 316L grade stainless steel, this lid ensures durability and resistance to high temperatures and pressure. The high-pressure sealing gasket (P1/H1) makes it suitable for both condensing and non-condensing applications, catering to a wide range of needs including boilers, ovens, and ventilation systems.

Its modular design allows for easy installation with a push-fit jointing system, secured with a locking band. The CE-marked SWPro system is designed to meet EN 1856-1 standards, ensuring safety and performance. The included stainless steel BSP connection allows for straightforward integration with drainage pipework, making maintenance simple and efficient.

SKU: 3-300-037

Technical Specifications
Material316L Stainless Steel (Inner Material)
Outer MaterialN/A
Sealing GasketHigh-pressure sealing gasket (P1/H1)
SystemSWPro
StandardsCE-marked; EN 1856-1 compliant
ConnectionStainless steel BSP
FuelsGas, Oil
Distance To Combustibles50mm
Warranty10 Years
CompatibilityUsed in modular single wall flue systems; fits vertical runs under tees
ApplicationSuitable for condensing and non-condensing appliances
The Lid with Drain - Ø 300 is engineered for effortless installation in vertical flue runs. Begin by positioning the lid at the bottom of a vertical setup, typically under a tee. Ensure that the jointing surfaces are clean and free of debris. Install the push-fit jointing system and secure the component by engaging the locking band. Remember to properly fit the high-pressure sealing gaskets (P1/H1) as required for both condensing and non-condensing applications. Finally, align the stainless steel BSP connection with your drainage pipework, ensuring a snug, leak-proof fit. Always consult the installation manual and follow local building regulations to guarantee safety and optimal performance.

The Lid with Drain - Ø 300 is made from high-grade 316L stainless steel, ensuring durability and high resistance to temperature and pressure.

Yes, the product is designed for both condensing and non-condensing applications, making it highly versatile.

The product is CE-marked and meets the EN 1856-1 standards, ensuring it complies with stringent safety and performance requirements.

It features a modular design with a push-fit jointing system secured by a locking band. Jointing gaskets must be fitted for P1 and H1 installations to ensure a tight seal.

The SWPro flue systems cover a range of diameters from Ø 80 up to Ø 400, accommodating various installation needs.

Yes, it is suitable for both positive and negative pressure systems, providing flexibility for various applications.

The stainless steel construction ensures minimal maintenance, but it's recommended to check the drainage connection and periodically ensure the system is clear of blockages.

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