👀 5 people are viewing this product
× National Flues
Free Delivery on All Orders Over £100
We have 100% 5 Star Reviews on Trustpilot
Enjoy Our Free Flue Design Service
Delivery To Mainland UK Addresses
Call Our Experts on 01670 206999

Non-concentric increaser - Ø 650 (3-650-004)

National Flues presents the Non-concentric Increaser Ø 650, a premium flue adaptor designed to enhance both residential and commercial chimney setups. Engineered from 316L stainless steel, this product is ideal for various applications including boilers, ovens, and ventilation systems. As a trusted supplier of high-quality flue systems and accessories, National Flues ensures that every product meets rigorous industry standards. Explore our full range of chimney liners and flue adaptors to find t Read more...
The price you pay today £695.99
including free delivery Give us a call if you find it cheaper and we'll try to price match.

 

Payment Options

At a Glance

    Constructed from high-grade 316L stainless steel for exceptional durability
    Suitable for both condensing and non-condensing applications
    CE-marked and compliant with EN 1856-1 standards (T200 H1 W Vm L50040 O(50) and L50050 O(50))
    Designed specifically for inclined flue systems to prevent condensate pooling
    Easy push-fit jointing system secured by a locking band
    Ideal for boilers, ovens, ventilation systems and chimney shaft liners
    Maintains a safe 50mm clearance from combustible materials
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, June 13th. 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.

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.

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 Non-concentric Increaser Ø 650 is part of the SWPro modular single wall flue system. Constructed from high-grade 316L stainless steel, this increaser features a high-pressure sealing gasket P1/H1, ensuring it is suitable for both high and low temperature, non-condensing, and condensing applications. Perfect for boilers, ovens, ventilation systems, and as a chimney shaft liner, the SWPro system offers unmatched versatility.

This CE-marked product meets stringent standards, including EN 1856-1: T200 H1 W Vm L50040 O(50) and EN 1856-1: T200 H1 W Vm L50050 O(50). The increaser is designed for easy installation with a push-fit jointing system secured by a Locking Band. For P1 and H1 installations, jointing gaskets are required at every joint.

Ensure a 50mm distance from any combustible material for optimal safety.

SKU: 3-650-004

Technical Specifications
Material316L Stainless Steel
Applicable StandardsEN 1856-1: T200 H1 W Vm L50040 O(50) & L50050 O(50)
SystemSWPro
Installation MethodPush-fit jointing with locking band; jointing gaskets required at every joint for P1 and H1 installations
Minimum Clearance50mm from combustible materials
Warranty10 Years
FuelsGas, Oil
Product Dimensionu00d8 650
In StockOUT OF STOCK
Before installation, ensure you have all the necessary accessories, including jointing gaskets (required for every joint in P1 and H1 installations). Begin by verifying that there is a minimum clearance of 50mm from any combustible material. The SWPro system is designed for user-friendly push-fit assembly; align the increaser correctly, ensure a secure push-fit connection, and lock it in place using the provided locking band. Always double-check joint integrity and compliance with installation standards. Following the manufacturer’s guidelines and safety standards is crucial for optimal performance and to mitigate any risks during operation.

A non-concentric increaser is used to increase the diameter of a flue system, often in an inclined run, preventing condensate pooling and ensuring optimal performance.

Yes, the Non-concentric Increaser Ø 650 is suitable for both high and low temperature, non-condensing and condensing applications.

The increaser is constructed from high-grade 316L stainless steel, providing excellent durability and corrosion resistance.

Yes, this increaser is CE-marked and conforms to standards such as EN 1856-1: T200 H1 W Vm L50040 O(50) and EN 1856-1: T200 H1 W Vm L50050 O(50).

The SWPro system uses a modular, push-fit jointing system that is secured with a Locking Band. For P1 and H1 installations, jointing gaskets must be used at every joint.

Ensure a minimum distance of 50mm from the outside of the flue to any combustible material, such as wood or plasterboard, to ensure safety.

Yes, National Flues offers reliable delivery across the UK for both retail and trade customers.

Your recently viewed products:

Multiple Payment Options- including Klarna, Clearpay, Mastercard, Visa and Paypal
Click To Call Our Experts