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Lid - Ø 250 (3-250-036)

National Flues proudly presents the Lid - Ø 250, a premium flue cap engineered from 316L stainless steel. This exceptional product is perfect for enhancing the performance of chimney systems, boilers, ovens, and ventilation units. As a cornerstone of the SWPro modular system, the Lid - Ø 250 not only offers durability but also exceptional safety and reliability across both residential and commercial applications. Discover why discerning customers choose National Flues for high-quality, efficient flue solutions.
£66.99
Give us a call if you find it cheaper and we'll try to price match.

 

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At a Glance

    Fabricated from high-grade 316L stainless steel
    Designed specifically for the SWPro modular flue system
    Robust push-fit jointing system secured by a locking band
    Compliant with EN 1856-1 standards and CE marked
    Suitable for both condensing and non-condensing applications

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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Have Questions?
Phone: 01670 206999
Email: [email protected]

The Lid - Ø 250 is an integral component of the SWPro modular single-wall flue system, manufactured from high-grade 316L stainless steel. It's designed to cap off the branch or base of a tee or to seal the end of a header. This robust cap is suitable for various applications, including boilers, ovens, ventilation systems, and chimney shaft liners.

The SWPro system features a high-pressure sealing gasket P1/H1, making it appropriate for both high and low temperatures, non-condensing and condensing applications, and flue gases in positive and negative pressure. It is CE marked and constructed to meet stringent standards: EN 1856-1: T200 H1 W Vm L50040 O(50) for diameters Ø 80 up to Ø 200, and EN 1856-1: T200 H1 W Vm L50050 O(50) for diameters Ø 250 up to Ø 400. The modular design ensures easy installation with a push-fit jointing system, further secured by a locking band.

Jointing gaskets must be fitted on every joint in P1 and H1 installations, with a 50mm clearance from any combustible material.

SKU: 3-250-036

Technical Specifications
Material316L Stainless Steel
Sizeu00d8 250
SystemSWPro
ApplicationsBoilers, Ovens, Ventilation systems, Chimney Shaft Liners
CE Marked1
ComplianceEN 1856-1: T200 H1 W Vm L50050 O(50) for u00d8 250 up to u00d8 400
Temperature RangeHigh and Low Temperatures
Gasket TypeHigh-pressure sealing gasket (P1/H1)
Fuel CompatibilityGas, Oil
Warranty10 Years
ClearanceMinimum 50mm from combustible materials
Installation is straightforward thanks to the SWPro push-fit jointing system. Ensure that all joints are fitted with the appropriate P1/H1 sealing gaskets and that there is a minimum clearance of 50mm from any combustible material. The lid is designed to be used at the branch or base of a tee or to cap the end of a header. Secure the lid firmly with the provided locking band to create a tight, leak-free seal. Always verify that the installation complies with local building regulations and the installation manuals provided.

The Lid - Ø 250 is used to close off the branch or base of a tee or to cap the end of a header in a flue system.

It is made from high-grade 316L stainless steel.

Yes, it is suitable for both high and low temperature applications.

It is CE marked and meets EN 1856-1: T200 H1 W Vm L50040 O(50) for diameters Ø 80 up to Ø 200, and EN 1856-1: T200 H1 W Vm L50050 O(50) for diameters Ø 250 up to Ø 400.

Ensure a 50mm distance from any combustible materials and fit jointing gaskets on every joint in P1 and H1 installations.

Yes, it is suitable for both non-condensing and condensing applications.

It features a push-fit jointing system and is secured in place using a locking band.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, May 20th. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call. If you need faster stove or fireplace delivery please also 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. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

Price Match Guarantee +

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.

Read our review in our Lid - Ø 250 buyers guide

Enhance your flue system with the precision-engineered Lid - Ø 250; secure your installation today by adding it to your cart.

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