A warm welcome to National Flues Ltd; a national leader in stoves, fireplaces and flue systems. We use cookies to power essential ecommerce features and personalise your experience, ensuring a smooth, secure, and ever-improving buying experience on our website. Your privacy is our priority— cookies help us remember your preferences and enhance your visit without compromising your data. By continuing to browse, you agree to our use of cookies as detailed in our Cookie Policy. Enjoy your visit and let us now if you need any help!
Cookie Preferences
We use different types of cookies for various purposes. Please select which you allow:
Reducer - Ø 400
The National Flues Reducer - Ø 400 is the perfect flue system adapter for customers demanding quality and durability. Engineered from robust Read More...
The National Flues Reducer - Ø 400 is the perfect flue system adapter for customers demanding quality and durability. Engineered from robust 316L stainless steel, this adapter is designed to seamlessly integrate with both non-condensing and condensing systems. CE marked and compliant with EN 1856-1 standards, our product is essential for applications in boilers, ovens, and ventilation systems throughout the UK. Less...
Hover to Zoom / Click for Gallery
Out of Stock – Pre-order Now
Unbeatable Value
£212.49
including Free Delivery
Buy with confidence. If you find this cheaper within 48 hours of checkout, we'll refund the difference.
At a Glance
Crafted from high-grade 316L Stainless Steel
Compatible with the SWPro modular single wall system
Supports both non-condensing and condensing operations
CE marked with EN 1856-1 specifications
Easy push-fit joint installation secured by a Locking Band
Maintains crucial 50mm clearance from combustible materials
×
Email Product
Enter your email address to send the product details:
Please Note: All dimensions refer to the internal diameter of flues.
If unsure, please call 01670 206999 to ensure you choose the correct products.
We Won't Be Beaten On Price
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.
Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
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).
“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
The Reducer - Ø 400 is a concentric adapter designed to effectively decrease the diameter of your existing flue system. Crafted from high-grade 316L stainless steel, this product offers exceptional durability and performance. The SWPro modular single wall flue system is suitable for a wide range of applications including boilers, ovens, ventilation systems, and chimney shafts.
It supports both non-condensing and condensing operations, handling both high and low temperatures and flue gases in positive and negative pressure. The system features a high-pressure sealing gasket (P1/H1) and is CE marked with Designation Number EN 1856-1: T200 H1 W Vm L50050 O(50) for diameters up to Ø 400. Installation is straightforward with a push-fit jointing system that secures using a Locking Band.
Safety is paramount, so it's crucial to maintain a 50mm distance from any combustible materials.
Install the Reducer - Ø 400 using the straightforward push-fit jointing system. Ensure the connection is secured with the provided Locking Band. Pay attention to the 50mm clearance requirement from any combustible materials during installation. For optimum performance, consider using optional accessories such as additional sealing gaskets, expansion joints, or adapter extensions to create a tailored, leak-proof system. Always refer to the installation manual and local regulations to ensure safety and compliance.
The Reducer - Ø 400 is made from high-grade 316L stainless steel, ensuring exceptional durability and performance.
Yes, the Reducer - Ø 400 is CE marked with Designation Number EN 1856-1: T200 H1 W Vm L50050 O(50).
The Reducer - Ø 400 is suitable for a wide range of applications, including boilers, ovens, ventilation systems, and chimney shaft liners.
The Reducer - Ø 400 should be installed as part of the SWPro modular flue system, using a push-fit jointing system secured with a Locking Band. Ensure a 50mm distance from any combustible materials.
Yes, the Reducer - Ø 400 is designed to handle both high and low temperature applications, making it very versatile.
Yes, the Reducer - Ø 400 supports both non-condensing and condensing operations.
The high-pressure sealing gasket (P1/H1) ensures a secure and leak-proof connection within the flue system, maintaining the integrity of your setup.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Friday, April 25th.
If you need faster stove or fireplace delivery please give us a call.
We can often 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. If you find it cheaper within 48 hours, we'll refund the difference.
Compatible and other products that may be of interest...
Comprehensive Buyers Guide for the Reducer - Ø 400
When choosing the right flue system components, the Reducer - Ø 400 stands out as a premium component that combines durability, ease of installation, and compliance with vital safety standards. In this guide, we outline everything you need to know about this essential adapter, address potential concerns, and highlight optional accessories to further enhance your system.
Product Overview
The Reducer - Ø 400 is designed to efficiently reduce the diameter of your existing flue system, ensuring compatibility across various applications. Made from high-quality 316L stainless steel, it offers outstanding resistance to corrosion and sustains high performance even in demanding environments. Its robust construction makes the product suitable for both high and low-temperature operations, supporting non-condensing and condensing systems alike.
Key Features and Benefits
• Longevity and Durability: Thanks to its 316L stainless steel build, this reducer promises a long service life, even under extreme conditions. This means lower maintenance costs and fewer replacements over time.
• Ease of Installation: The push-fit jointing system paired with a secure Locking Band simplifies the installation process. This design ensures that even those new to flue system setups can achieve a secure, leak-proof connection.
• Safety and Compliance: With a mandatory 50mm clearance from combustible materials and a CE marking in line with EN 1856-1 standards, the product meets rigorous European safety and performance criteria.
• System Compatibility: Whether your system is set up for non-condensing or condensing operations, the Reducer - Ø 400 is engineered to handle both, offering versatility in application.
Understanding the Technical Specifications
Before installation, it is vital to understand the technical details that make this product reliable and efficient. The reducer's specifications, including its material composition, operational temperature range, and safety clearances, ensure that you are investing in a product that meets both performance and regulatory standards. The technical data provided enables professionals to integrate this adapter seamlessly into existing systems.
Addressing Common Buyer Objections
Objection #1: Installation Concerns
Some may worry that installing a new component in an existing flue system will be complicated. However, the Reducer - Ø 400 has been designed with a user-friendly push-fit mechanism, enabling quick and secure installation. Our comprehensive installation guidelines and optional accessories, such as additional sealing gaskets, further simplify the process.
Objection #2: Compatibility Issues
Buyers often question whether the new reducer will integrate with their current system setup. Rest assured, this product is compatible with the SWPro modular single wall system and supports both condensing and non-condensing operations. This dual functionality means that whether your system is aged or modern, the Reducer - Ø 400 will perform reliably.
Objection #3: Value for Money
Investing in premium components may appear costly at first glance. However, considering its robust construction, extended warranty of 10 years, and high-level safety features, this reducer represents excellent value. The enhanced durability and low maintenance requirements further justify the investment.
Optional Accessories for Enhanced Performance
In addition to the primary reducer, consider browsing our range of optional accessories. These can include specialized sealing gaskets, adapter extensions, and additional expansion joints designed to optimise performance and ensure a flawless installation. These accessories not only augment the performance of your flue system but also extend the life of your entire setup.
Practical Installation Tips
For a seamless installation experience, make sure you:
• Measure the installation area carefully to adhere to the mandatory 50mm clearance from combustible materials.
• Follow the step-by-step installation manual that accompanies the product.
• Consider using supplementary accessories where necessary to enhance the system's performance and safety.
Final Thoughts
The Reducer - Ø 400 from National Flues is a top-tier product that promises not only to meet but exceed your expectations when it comes to flue system performance. With its strong construction, easy-to-follow installation process, and versatile design, it is engineered to provide a safe, efficient, and reliable solution for your heating or ventilation system. Whether you are upgrading an old installation or designing a new system, this product is poised to deliver unmatched results and longevity.
As you weigh your options, remember that investing in quality components now can prevent costly repairs or replacements in the future. Our optional accessories also provide tailored solutions for your specific needs, enhancing both the performance and durability of your entire flue system setup. By choosing the Reducer - Ø 400, you are not only ensuring compliance with modern safety standards but also embracing a product that offers a logical balance of innovation and robust performance.
For every installation, our team is ready to support you with expert advice and additional resources. We encourage you to explore our supplemental product lines and optional accessories to fully customise your setup according to your requirements. Making an informed choice has never been easier when reliability and quality are at the forefront of our product design.
In summary, the Reducer - Ø 400 is a reliable, efficient, and safe choice for any flue system. Its unique combination of high-grade materials, advanced design features, and optional accessory compatibility makes it an outstanding solution. Whether for professional installations or DIY projects, this product promises a hassle-free integration that will stand the test of time.
Buy now or call 01670 206 999.
National Flues Ltd Verdict
The Reducer - Ø 400 is a stellar product in our extensive range of flue system components. Reliable and versatile, it is perfect for both high and low-temperature applications. We are proud to offer nationwide delivery for both retail and trade customers, rarely beaten on price.
The Reducer - Ø 400 is used to decrease the diameter of your existing flue system, ensuring compatibility and optimal performance across various applications.
National Flues is a leading UK supplier of fireplaces and flues, known for reliable delivery and competitive pricing. Serving both retail and trade customers nationwide, we offer secure online payments and unbeatable service.
Secure your high-performance Reducer - Ø 400 now and experience unmatched reliability – add to your cart or call us today!
×
Select Product Options
×
Product added
Would you like to keep shopping or head to checkout?
