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Pipe 0,25 m - Ø 350 (3-350-012)

Discover the National Flues SWPro 350mm 0.25m Stainless Steel Flue Pipe, a key component in modern chimney systems and high-performance flue installations. Engineered from 316L stainless steel, this pipe excels in both commercial and residential applications, providing unmatched durability, safety, and versatility for boilers, ovens, and ventilation systems.
Now only £142.99
including free delivery Give us a call if you find it cheaper and we'll normally price match.

 

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At a Glance

    Crafted from high-grade 316L stainless steel ensuring longevity and corrosion resistance

    Modular design optimised for versatility in various heating systems

    Simple push-fit jointing system with a secure locking band for a reliable connection

    Suitable for both condensing and non-condensing applications including boilers, ovens, and ventilation systems

    CE marked and EN 1856-1 compliant to meet high safety and performance standards

    Maintains a safe 50mm distance from combustible materials for enhanced safety

Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, July 22nd. This is based on current lead times for this product. 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 on 01670 206 999. 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 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.

Best 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.

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.

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

The SWPro 350mm 0.25m Stainless Steel Flue Pipe is a premium component of our modular single wall flue system. Crafted from high-grade 316L stainless steel, this flue pipe boasts exceptional durability and resistance to corrosion. The flue system features a high-pressure sealing gasket (P1/H1), making it suitable for both high and low-temperature environments, non-condensing and condensing applications, with flue gases in positive or negative pressure.

Not only is it ideal for boilers, ovens, and ventilation systems, but it also serves as a perfect chimney shaft liner. The CE-marked SWPro system ensures compliance with EN 1856-1 standards. Installation is straightforward with its push-fit jointing system, secured by a locking band.

For P1 and H1 installations, jointing gaskets must be used on every joint, and a 50mm distance from combustible materials must be maintained.

SKU: 3-350-012

Technical Specifications
Material316L Stainless Steel
Length0.25 m
Diameter350 mm
Jointing SystemPush-fit with locking band
Gasket RequirementHigh-pressure sealing (P1/H1) must be fitted on every joint
Applicable EnvironmentsColdest to highest temperature, condensing and non-condensing applications
Minimum Clearance50mm from combustible materials
Warranty10 Years
ComplianceCE Marked, EN 1856-1
For best performance, install the SWPro flue pipe by following these steps: Ensure that the push-fit joint is correctly aligned and secured with the provided locking band. For P1 and H1 installations, always use the correct high-pressure sealing gaskets on every joint to prevent gas leaks or heat loss. Maintain a clearance of 50mm from any combustible material during installation and check local building regulations. Finally, refer closely to the manufacturer’s installation manual to ensure compliance and safety during set-up.

The SWPro flue pipe is made of 316L high-grade stainless steel, ensuring excellent durability and corrosion resistance.

Yes, the SWPro flue system is CE marked and conforms to EN 1856-1 standards.

Absolutely, the SWPro flue pipe is suitable for both condensing and non-condensing applications.

The installation is simple with a push-fit jointing system and a locking band. For P1 and H1 installations, jointing gaskets must be fitted on every joint.

It is recommended to maintain a 50mm distance from the outside of the flue to any combustible material such as wood or plasterboard.

The SWPro flue pipe is suitable for a broad range of appliances, including boilers, ovens, ventilation systems, and as a chimney shaft liner.

Yes, National Flues offers reliable nationwide delivery throughout the UK, serving both retail and trade customers.

What our experts say!

"The SWPro 350mm 0.25m Stainless Steel Flue Pipe is an exceptional choice for various applications. Its modular design, high-quality materials, and easy installation make it a top pick among our customers. Plus, with National Flues, you can count on reliable nationwide delivery and competitive pricing. Ideal for both retail and trade customers."

The SWPro 350mm 0.25m Stainless Steel Flue Pipe is designed for use in high and low-temperature flue systems, suitable for various appliances including boilers, ovens, and ventilation systems.

National Flues is a prestigious supplier of fireplaces and flues, known for competitive pricing and dependable delivery across the UK. Serving both retail and trade customers, we ensure top-quality products and unparalleled service.

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