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National Flues brings you the Non-Concentric Increaser 3 Diameters - Ø 250, a premium modular single wall flue adaptor crafted in high-grade 316L stainless steel. Perfect for applications across fireplaces, boilers, ovens, and ventilation systems, this versatile component ensures seamless transitions between varying flue diameters while adhering to rigorous EN and CE standards. Enhance your installation with our optional accessories, designed to complement and complete your flue system setup with unmatched reliability and style.
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£341.99
with free delivery
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
High-grade 316L stainless steel construction for exceptional durability Seamless transition between three diameters enhancing flue system versatility Fully compliant with EN 1856-1 standards and CE marked for safety Suitable for both condensing and non-condensing applications with secure push-fit joints Includes high-pressure sealing gaskets to prevent condensate pooling
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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.
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 Non-concentric increaser 3 diameters - Ø 250 is part of the SWPro range, a modular single wall flue system constructed from 316 grade stainless steel. This increaser allows you to smoothly transition between three different diameters, providing flexibility in your flue system setup. Perfect for a variety of applications such as boilers, ovens, ventilation systems, and chimney liners, this high-quality flue component meets the stringent T200 H1 W Vm L50050 O(50) standards.
It includes a high-pressure sealing gasket, making it suitable for both positive and negative pressure applications, as well as condensing and non-condensing setups. The push-fit jointing system with locking bands ensures a secure fit, while maintaining a safe distance of 50mm from combustible materials.
SKU: 3-250-204
Technical Specifications
SKU
3-250-204
Model
Non-Concentric Increaser 3 Diameters - u00d8 250
Material
316L Stainless Steel
System
SWPro
Approvals
CE, EN 1856-1
Diameter Range
u00d8 80 up to u00d8 200 / u00d8 250 up to u00d8 400
Distance To Combustibles
50mm
Warranty
10 Years
Fuels
Gas, Oil
Installation
Push-fit joint with locking bands and high-pressure gaskets
Before installation, ensure that all necessary components and optional accessories, such as additional sealing gaskets and flue connectors, are on hand. Follow the manufacturer guidelines meticulously: secure each push-fit joint with the locking bands, install a gasket on every joint, and maintain a minimum clearance of 50mm from any combustible material. Always refer to the installation manual for specific instructions related to both condensing and non-condensing setups. If you are uncertain about any step of the process, consult a professional installer to ensure safety and optimal performance.
The increaser is constructed from high-grade 316L stainless steel, ensuring durability and longevity.
It is suitable for a wide range of applications including boilers, ovens, ventilation systems, and as a chimney liner.
Yes, the Non-Concentric Increaser is CE marked and complies with EN 1856-1 standards.
The increaser features a push-fit jointing system secured with a locking band. For P1 and H1 installations, jointing gaskets must be fitted on every joint, and a 50mm distance from any combustible material must be maintained.
Yes, it is suitable for both condensing and non-condensing applications.
It allows for transitions between three different diameters, making it versatile for various flue configurations.
Yes, we offer reliable nationwide delivery for both retail and trade customers.
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.
The Non-Concentric Increaser 3 Diameters - Ø 250 is engineered for those who demand superior performance and flexibility from their flue system. Manufactured from high-grade 316L stainless steel, this increaser is built to endure the challenges of high-temperature applications and varying environmental conditions. It is an excellent choice for adapting your flue system when transitioning between different diameters, ensuring that your installation not only meets rigorous safety standards but also performs flawlessly.
Key Features and Benefits
High-Quality Construction:
• Constructed from 316L stainless steel, this increaser offers robust resistance to corrosion and long-lasting durability.
• Its modular design ensures a secure and leak-proof connection between different flue diameters.
Versatile Diameter Transition:
• Seamlessly transitions between three distinct diameters, making it ideal for adapting your flue installation to tricky spaces or evolving design requirements.
• This versatility allows for a more tailored approach to flue installation, whether for new builds or retrofits.
Compliance and Safety:
• Meets EN 1856-1 standards and carries CE marking, assuring you of its quality and safety in demanding applications.
• The inclusion of a high-pressure sealing gasket minimizes the risk of condensate pooling, a frequent concern in inclined or complex flue systems.
Ease of Installation:
• Designed with a user-friendly push-fit jointing system, installation is both simple and secure.
• The locking bands ensure that each connection is tight and enduring, reducing maintenance concerns over time.
Installation Guidelines
Before setting up the increaser, it is vital to prepare adequately:
• Read the Manual: Familiarise yourself with the installation guidelines provided by National Flues to ensure you adhere to all safety protocols.
• Check for Accessories: Confirm that any optional accessories, such as additional sealing gaskets or flue connectors, are in place. These accessories can be essential for ensuring complete compatibility with your overall flue system.
• Maintain Clearances: Always maintain a 50mm distance from combustible materials to prevent fire hazards.
• Professional Advice: If in doubt, seek advice from a certified installer to ensure the installation conforms to local regulations and manufacturer recommendations.
Optional Accessories
While the Non-Concentric Increaser 3 Diameters - Ø 250 stands out as a high-performance product on its own, exploring optional accessories can elevate your flue system further. National Flues offers a variety of complementary components, including:
• Additional Sealing Gaskets: For enhanced leak prevention and durability across all joints.
• Flue Connectors: Designed to ensure seamless integration with other system components.
• Support Brackets and Mounting Kits: To provide extra support in installations that require additional reinforcement.
These accessories are designed to work in harmony with the increaser, ensuring that your flue system operates at peak efficiency. They can be invaluable in challenging installations or when striving for an optimal custom setup. Take a moment to search our catalog of accessories to discover additional components that might be necessary to complete your project.
Addressing Common Objections
Many customers initially hesitate due to concerns over installation complexity or compatibility with existing systems. However, the Non-Concentric Increaser 3 Diameters - Ø 250 addresses these issues head on:
• Installation Simplicity: Its push-fit joint design means that even installers with moderate experience can achieve a professional-grade connection swiftly and efficiently.
• Versatility Across Applications: Designed for both condensing and non-condensing systems, it performs reliably under a variety of operational conditions.
• Proven Durability: With a warranty of 10 years, you can be confident in its long-term performance, reducing the need for frequent replacements or repairs.
By understanding these points, you can make an informed decision without sacrificing confidence in the quality or compatibility of your flue system components.
Why Choose National Flues
National Flues is renowned for its commitment to quality, reliability, and customer service. We meticulously source the best materials and design our products to exceed industry standards. Our reputation is built on decades of experience in supplying both retail and trade customers with products that deliver exceptional value. When you choose the Non-Concentric Increaser 3 Diameters - Ø 250, you are not only investing in a component that performs impeccably; you are joining a community that values innovation, safety, and practicality.
National Flues also understands the importance of a complete system solution. We encourage our customers to consider optional accessories that can enhance and fine-tune their installations. By exploring these options, you may identify additional components that will provide even greater efficiency and safety for your overall flue system.
Final Thoughts
In summary, the Non-Concentric Increaser 3 Diameters - Ø 250 is the ideal choice for those seeking a high-performance, versatile, and easy-to-install solution for flue systems. Its robust construction, adherence to strict standards, and compatibility with a wide range of optional accessories make it a standout product in its category. Whether you are upgrading an existing system or embarking on a new installation, this increaser offers the reliability and performance you need. Its thoughtful design and flexibility ensure that you can adapt to both current and future heating and ventilation challenges without compromise.
With its clear installation guidelines, proven performance, and comprehensive support from National Flues, this product offers tremendous value. It is the smart choice for safety-conscious professionals and DIY enthusiasts alike. Experience the difference in your installation by complementing it with carefully selected optional accessories that further enhance safety and efficiency.
Buy now or call 01670 206 999.
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