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Lid with horizontal drain - Ø 400 (3-400-027)
National Flues presents the Lid with Horizontal Drain - Ø 400; a premium drainage solution engineered for efficient performance in both commercial and domestic flue systems. This high-quality lid, constructed from durable 316L stainless steel, is designed to meet strict EN 1856-1 standards and is CE marked for safety. Ideal for boilers, ovens, and ventilation systems, it is the perfect accessory for ensuring safe, effective drainage in various flue setups. Explore our range of accessories to complement and optimise your flue system performance.
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£168.49
with free delivery
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
316L stainless steel construction for durability
1" BSP externally threaded drain connection and cap for efficient drainage
CE marked and compliant with EN 1856-1 standards
Modular push-fit jointing system with locking band for secure installation
Suitable for both condensing and non-condensing operations
Available for high and low temperature applications
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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).
“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
The Lid with horizontal drain - Ø 400 is a critical component in commercial and domestic flue systems. Its design, featuring a 1” BSP stainless steel externally threaded drain connection and cap, ensures efficient drainage at the end of a header or inclined run. Constructed with high-grade 316L stainless steel, this robust lid suits various high-pressure and temperature applications, both non-condensing and condensing.
Its CE marked SWPro modular single wall flue system is ideal for boilers, ovens, ventilation systems, and chimney shafts. With push-fit jointing secured by a locking band and additional jointing gaskets for P1 and H1 installations, it guarantees secure and safe installation.
SKU: 3-400-027
SKU
3-400-027
Item
Lid with horizontal drain - u00d8 400 u00d8 400
Designation:
EN 1856-1: T200 H1 W Vm L50040 O(50) - u00d8 80 up to u00d8 200
EN 1856-1: T200 H1 W Vm L50050 O(50) - u00d8 250 up to u00d8 400
System:
SWPro
Inner Material:
316L Stainless Steel
Outer Material:
N/A
Fuels:
Gas, Oil
Approvals:
CE
Distance To Combustibles:
50mm
Warranty:
10 Years
Installation of the Lid with Horizontal Drain - Ø 400 is straightforward when following the recommended guidelines. Begin by ensuring that all surfaces are clean and free from debris. Fit the lid onto the flue system by aligning the push-fit joints, then secure with the provided locking band. For P1 and H1 installations, install the jointing gaskets at every connection point to ensure a reliable seal. Always maintain a minimum clearance of 50mm from combustible materials such as wood or plasterboard. It is advisable to double-check alignment and secure all connections before activating your system. Should any uncertainty arise during installation, consult a certified professional or refer to the complete installation manual available on our website.
This lid is suitable for high and low-temperature applications, including boilers, ovens, ventilation systems, and chimney shafts, in both condensing and non-condensing environments.
The lid is made from high-grade 316L stainless steel, known for its durability and excellent resistance to corrosion.
Yes, the Lid with Horizontal Drain - Ø 400 is CE marked, ensuring it meets the required European standards for safety and performance.
The lid features a modular push-fit jointing system secured with a locking band. For P1 and H1 installations, jointing gaskets must be fitted on every joint.
When installing in environments with combustible materials like wood or plasterboard, ensure a distance of 50mm from the outside of the flue is maintained to ensure safety.
Yes, it is designed to work efficiently under both positive and negative pressure conditions.
It is available in sizes from Ø 80 up to Ø 400, catering to various project requirements.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Thursday, May 1st. 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 with horizontal drain - Ø 400 buyers guide
Comprehensive Buyer’s Guide for the Lid with Horizontal Drain - Ø 400
When investing in components for your flue system, it is essential to select products that not only meet industry standards but also offer long-lasting reliability. The Lid with Horizontal Drain - Ø 400 is designed exclusively to deliver on those key points, ensuring a secure, efficient drainage solution in both commercial and domestic environments.
Overview
Crafted from high-grade 316L stainless steel, this lid is engineered to withstand even the most challenging conditions. The use of premium materials ensures excellent resistance to corrosion and damage, a necessary feature for heating systems that encounter fluctuating temperatures and pressures. Encompassing a 1" BSP externally threaded drain connection and cap, this lid stands out by providing a simple yet robust drainage solution, crucial for maintaining optimal system performance.
Key Features and Benefits
Durability and Strength:
- Constructed from robust 316L stainless steel, the lid offers exceptional resistance to corrosion and degradation, ensuring longevity and reliability.
- The design caters to high-pressure and high-temperature conditions, making it robust enough for diverse applications including boilers, ovens, and chimney shafts.
Efficient Drainage:
- Featuring a 1" BSP externally threaded connection, the drain cap facilitates efficient water expulsion, reducing the risk of blockage or damage.
- Its design minimizes the need for maintenance while ensuring that your flue system operates at peak efficiency.
Ease of Installation:
- The modular push-fit jointing system, secured by a locking band and supported by jointing gaskets for P1 and H1 installations, simplifies the installation process.
- Clear guidelines and a straightforward assembly process mean reduced installation times and a lower possibility of error.
Safety and Compliance:
- CE marking and adherence to EN 1856-1 standards highlight that the lid meets strict European safety and performance benchmarks.
- The design is mindful of combustible clearances, stipulating a minimum distance of 50mm from non-metallic materials to enhance safety.
Installation and Maintenance
Effective installation is paramount to achieving the best performance from your flue system. Start by preparing all necessary components and ensuring the work area is clean. Follow the step-by-step installation instructions, paying careful attention to ensure that the push-fit joints align correctly and are securely fastened with the locking band. For installations under P1 and H1 classifications, do not overlook the importance of jointing gaskets to prevent leaks. Regular inspection and maintenance of your flue system will not only extend the lifespan of the components but also maintain system efficiency. In addition, our optional accessories – such as specialised jointing seals and support brackets – can be considered to further optimise and customise your installation depending on your specific requirements.
Addressing Common Concerns
Installation Challenges:
If you are concerned about the complexity of the installation process, it is helpful to know that the Lid with Horizontal Drain - Ø 400 is designed for ease of use. The push-fit system means that even those with moderate DIY experience can manage the installation with minimal hassle. Should you require any assistance or additional guidance, our customer service team is always available to help.
Performance Under Extreme Conditions:
Some customers worry about the performance of their flue systems under unusual temperature or pressure conditions. Rest assured, this lid has been rigorously tested and is perfectly capable of maintaining its integrity and functionality in high-pressure and high-temperature environments. Constructed with durability in mind, it continues to perform reliably even in demanding scenarios.
Compatibility With Existing Systems:
Another common concern is whether this component will integrate seamlessly with your existing flue system. The Lid with Horizontal Drain - Ø 400 is engineered to be versatile – suitable for both condensing and non-condensing applications. This compatibility makes it a smart addition for those updating or expanding their current system.
Optional Accessories:
To further enhance the functionality and performance of your flue system, consider our range of optional accessories. These include additional sealing gaskets, mounting brackets, and maintenance kits, which are designed to offer extra flexibility for custom installations. Each accessory is aimed at addressing specific installation challenges and optimising overall system performance.
Final Considerations
When it comes to protecting your investment in a flue system, every component matters. The Lid with Horizontal Drain - Ø 400 not only meets but exceeds expectations in performance, durability, and ease of installation. Whether you are retrofitting an existing system or building a new one, this lid provides a reliable, high-performance solution that minimises maintenance while maximising operational efficiency.
Moreover, choosing National Flues means you benefit from decades of industry expertise, competitive pricing, and a commitment to quality service. Every product, including the Lid with Horizontal Drain - Ø 400, is backed by extensive approval and safety certifications, ensuring your project adheres to the highest standards. With thoughtful design, rigorous testing, and user-focused features, this lid stands as a testament to our dedication to delivering only the best for our customers.
In conclusion, investing in the Lid with Horizontal Drain - Ø 400 is not merely choosing a component – it is choosing peace of mind. With its robust construction, efficient drainage capabilities, and ease of integration into a variety of flue systems, this product offers an unmatched balance of quality, safety, and value. For those ready to take their system’s performance to the next level, the decision is clear. Add to cart or call 01670 206 999.
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