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Boiler adaptor - Ø 125 (3-125-BA-103)

National Flues proudly presents the Boiler Adaptor Ø 125 – a robust, efficient, and versatile component for the SWPro Single Wall Flue System. This high-quality adaptor is designed for seamless integration with a variety of heating appliances including boilers, ovens, and ventilation systems. As part of our trusted range of flue accessories, this product underpins excellent performance even in demanding conditions. Explore our collection for reliable heating connectors and expert flue solutions Read more...
The price you pay today £50.99
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At a Glance

    Constructed from high-grade 316L Stainless Steel for superior durability
    Specifically engineered for the SWPro modular flue system
    Suitable for both condensing and non-condensing applications
    Easy push-fit jointing system secured with a locking band
    CE marked and compliant with EN 1856-1 standards with robust safety features (50mm clearance from combustibles)
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, June 20th. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please 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.

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All our products come with warranties and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

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

The Boiler Adaptor Ø 125 is designed to seamlessly connect your SWPro flue system to your heating appliance. Made from high grade 316L stainless steel, this high-quality adaptor ensures durability and performance, even under high-pressure conditions. The SWPro system, which is CE marked, is suitable for both high and low temperature applications, accommodating both condensing and non-condensing flue gases.

Its modular design allows for easy installation with a push-fit jointing system, further secured by a locking band. To maintain safety, ensure a 50mm distance from any combustible material. Perfect for various applications including boilers, ovens, and ventilation systems, the Boiler Adaptor Ø 125 is a versatile and reliable choice.

SKU: 3-125-BA-103

Technical Specifications
Material316L Stainless Steel
SystemSWPro Modular Single Wall Flue
ApprovalsCE Marked, EN 1856-1: T200 H1 W Vm L50040 (u00d8 80 up to u00d8 200) and EN 1856-1: T200 H1 W Vm L50050 (u00d8 250 up to u00d8 400)
Fuels CompatibleGas, Oil
Installation Clearance50mm from combustible materials
Warranty10 Years
Diameteru00d8 125 mm
Jointing SystemPush-fit with locking band
For optimal installation, ensure that the Boiler Adaptor Ø 125 is fitted according to the manufacturer’s guidelines. Begin by aligning the adaptor with your SWPro flue system, ensuring that each joint is properly secured with the push-fit mechanism. For installations involving condensing appliances, it is essential to use silicone sealant at the connection point unless the appliance features integrated seals. Every join in the system should be fitted with a jointing gasket, particularly for P1 and H1 installations, to maintain airtight connections. Remember to maintain a minimum clearance of 50mm from any combustible materials such as wood or plasterboard to adhere to safety regulations. Always consult your local building codes and, if necessary, engage a certified professional to complete your installation.

The Boiler Adaptor Ø 125 is constructed using high-grade 316L stainless steel, ensuring durability and resistance to corrosion.

Yes, the Boiler Adaptor Ø 125 is designed to handle both high and low temperature conditions, making it suitable for a wide range of applications.

Absolutely, this adaptor is suitable for both condensing and non-condensing applications with flue gases in positive and negative pressure.

The Boiler Adaptor Ø 125 is part of the modular SWPro flue system, featuring a push-fit jointing system secured with a locking band. For P1 and H1 installations, jointing gaskets must be fitted at every joint.

The Boiler Adaptor Ø 125 is CE marked and meets the requirements of EN 1856-1: T200 H1 W Vm L50040 O(50) for diameters from Ø 80 to Ø 200, and EN 1856-1: T200 H1 W Vm L50050 O(50) for diameters from Ø 250 to Ø 400.

When installing, ensure to keep a distance of at least 50mm from the outside of the flue to any combustible materials such as wood or plasterboard.

Yes, when connecting to condensing appliances, it's recommended to seal the adaptor and the appliance outlet with silicone sealant unless the appliance has an integrated seal at the outlet.

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