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Adaptor male-male - Ø 400 (3-400-001)

The National Flues Adaptor Male-Male - Ø 400 is the ideal flue system component designed for modern chimney and ventilation installations. This high-quality stainless steel connector integrates seamlessly into the SWPro modular system, ensuring a secure, efficient, and safe operation. Whether you are outfitting a boiler, an oven, or a commercial chimney, this adaptor offers durability and compliance with EN 1856-1 standards, making it a top choice for both residential and trade professionals. Explore optional accessories to further enhance your system’s performance.
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£79.99
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At a Glance

  • Double male ends for secure flue section connection
  • Constructed from premium 316L stainless steel for corrosion resistance and durability
  • Complies with CE standards (EN 1856-1: T200 H1 W Vm L50050 O(50))
  • Versatile for boilers, ovens, ventilation systems, and chimney shaft liners
  • High-pressure sealing gasket (P1/H1) ensures excellent performance in both condensing and non-condensing applications
  • Part of the modular SWPro system for seamless integration

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).

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

The Adaptor male-male - Ø 400 is designed as a double male changeover section with two male ends, seamlessly integrating into a variety of flue systems. This high-quality component is part of the SWPro modular single wall flue system, constructed from 316L grade stainless steel known for its durability and resistance to corrosion. The adaptor features a high-pressure sealing gasket P1/H1, making it suitable for both high and low temperatures, as well as non-condensing and condensing applications with flue gases in both positive and negative pressure.The SWPro system is versatile and can be used in multiple applications including boilers, ovens, ventilation systems, and as a chimney shaft liner.

The construction involves high-grade 316L stainless steel with varying thicknesses depending on the flue diameter to ensure optimal performance and safety.This CE marked product complies with rigorous standards (EN 1856-1: T200 H1 W Vm L50050 O(50) for Ø 250 up to Ø 400) and guarantees superior quality and safety. The installation process is simplified with a push-fit jointing system that uses a Locking Band, requiring jointing gaskets for secure connections. It's important to maintain a minimum distance of 50mm from any combustible material during installation.

SKU: 3-400-001

Technical Specifications
SKU3-400-001
Flue Diameteru00d8 400
Material316L Stainless Steel
DesignationEN 1856-1: T200 H1 W Vm L50050 O(50)
SystemSWPro
SealingHigh-pressure sealing gasket (P1/H1)
Fuel CompatibilityGas, Oil
Minimum Distance To Combustibles50mm
Warranty10 Years
ApprovalsCE Marked
• Ensure that jointing gaskets are used on every push-fit connection for a secure joint. • The installation must follow the push-fit jointing system using the integrated Locking Band mechanism. • Maintain a minimum clearance of 50mm from any combustible materials to adhere to safety standards. • Ensure that all parts are dry and free from debris before installation to avoid any compromise in sealing efficiency. • Follow the product manual carefully, particularly concerning temperature variations and pressure conditions in both condensing and non-condensing applications.

The adaptor is used to connect two flue sections with male ends, ensuring a secure and efficient integration in the flue system.

It is made from high-grade 316L stainless steel, known for its durability and resistance to corrosion.

It is suitable for boilers, ovens, ventilation systems, and as a chimney shaft liner.

The adaptor complies with CE marking standards and has a designation number of EN 1856-1: T200 H1 W Vm L50050 O(50) for Ø 250 up to Ø 400.

It is installed using a push-fit jointing system secured with a Locking Band. Jointing gaskets are required on every joint.

Ensure you maintain a minimum distance of 50mm from any combustible materials.

The adaptor provides a secure and versatile connection option, is made from durable materials, and is easy to install, making it ideal for a wide range of applications.
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 Adaptor male-male - Ø 400 buyers guide

Act now to secure the Adaptor Male-Male - Ø 400 and enhance your flue system’s efficiency!

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