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Adjustable Pipe 250-350mm Ø 80 (2-80-016)
National Flues presents our Adjustable Twin Wall Insulated Chimney Flue Pipe, a premium solution designed for modern wood stoves, boilers, and gas fireplaces. This durable and versatile flue, crafted from high-grade stainless steel with superior rockwool insulation, meets top industry standards. Explore our range of related chimney system accessories to complete your installation.
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In Stock
£54.99
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Adjustable length from 250mm to 350mm for a perfect fit
Dual-layer construction with 304 and 316 stainless steel
Premium compressed rockwool insulation (200kg/m³) for optimal thermal performance
HETAS Approved and CE marked for assured safety and reliability
Secure, screwless installation using a Locking Band
Versatile compatibility with wood stoves, gas fireplaces, and boilers
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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.
Our Adjustable Twin Wall Insulated Chimney Flue Pipe, with an adaptable length ranging from 250mm to 350mm, is a versatile solution for your chimney systems. This flue pipe is engineered for a variety of solid fuel and gas/oil appliances including wood stoves, gas fireplaces, and boilers. The outer skin is crafted from 304 grade stainless steel with a thickness of 0.4mm, while the inner skin features 316 grade stainless steel of the same thickness.
This dual-layer construction, coupled with compressed rockwool insulation boasting a density of 200kg/m3, ensures durability and optimal thermal performance.Each component is fully welded, offering a secure, seamless installation. The TWPro Twin Wall Insulated Chimney system, designed for safety and efficiency, maintains a mandatory 50mm clearance from combustible materials. This product is both HETAS Approved and CE marked under designations EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20.Securing the parts together is straightforward, requiring no screws.
Simply use the Locking Band to fix the pipe in place. Whether you are a DIY enthusiast or a professional installer, our adjustable pipe meets the highest standards for chimney flue solutions.
SKU: 2-80-016
Technical Specifications
Model
Adjustable Twin Wall Insulated Chimney Flue Pipe
Adjustable Length
250-350 mm
Diameter
80 mm
Inner Material
316L Stainless Steel (0.40mm thick)
Outer Material
304 Stainless Steel (0.40mm thick)
Insulation
Compressed Rockwool (200kg/mu00b3)
Certifications
HETAS Approved, CE Marked (EN1856-1 T600 N1 W V2 L50040 G50, EN1856-1 T200 W V2 L50040 O20)
Clearance
50mm from combustible materials
Installation Mechanism
Locking Band (screwless installation)
Compatible Fuels
Wood, Oil, Gas, Low sulphur coal
Installation is straightforward: begin by adjusting the pipe length to your required measurement between 250mm and 350mm using the body-soluble ceramic blanket which can be easily trimmed. Ensure proper alignment before using the Locking Band to secure the components together. Maintain a minimum clearance of 50mm from any combustible surfaces. It is advisable to check local building regulations and consult with a professional installer if uncertain. Always inspect the flue components for any signs of wear prior to installation.
The adjustable flue pipe is suitable for solid fuel and gas/oil appliances such as wood stoves, gas coal effect fires, and oil/gas boilers.
The outer skin is made from 304 grade stainless steel, and the inner skin is constructed from 316 grade stainless steel, both with a thickness of 0.4mm.
The pipe features compressed rockwool insulation with a density of 200kg/m3.
Yes, the TWPro system is HETAS Approved and CE marked with designations EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20.
The parts are secured together using a Locking Band, maintaining a 50mm distance from any combustible materials. No screws are required for the installation.
The insulation has a density of 200kg/m3, ensuring great thermal performance.
A minimum distance of 50mm from the flue's exterior to any combustible material must be maintained.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Wednesday, April 30th.
If you need faster stove or fireplace delivery please give us a call.
We can often 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.
When it comes to creating or upgrading your chimney system, selecting the right components is essential for ensuring both efficiency and safety. The Adjustable Twin Wall Insulated Chimney Flue Pipe by National Flues offers a versatile solution that meets high industry standards while remaining adaptable to a variety of heating environments. Whether you are a professional installer or a DIY enthusiast, understanding the features, benefits, and installation requirements of this product is crucial to making an informed decision.
Key Considerations
Before investing in a chimney flue system, it is important to consider several factors:
- Compatibility: Ensure the flue is compatible with your type of appliance, whether it is a wood stove, gas fireplace, or oil boiler. This flue’s design is intended for use with a range of fuels including wood, oil, gas, and low sulphur coal.
- Safety Standards: Adherence to established safety standards, such as a minimum clearance from combustible materials and proper certifications, is paramount. This product maintains a 50mm clearance and carries both HETAS and CE certifications.
- Durability and Performance: Consider the materials used. With a dual-layer construction featuring 304 and 316 stainless steel, you benefit from superior durability and resistance to corrosion. The compressed rockwool insulation further enhances thermal performance.
Detailed Product Features
The Adjustable Pipe offers several distinctive features:
Adjustable Length
The ability to adjust the pipe length from 250mm to 350mm is a major selling point. This flexibility ensures a customised fit for various installation scenarios, making it easier to adapt the product to your specific chimney layout. This not only facilitates an optimal installation but also helps in maintaining the efficiency of your heating system.
Dual-Layer Construction
The flue is constructed from two types of high-quality stainless steel – 304 for the outer layer and 316 for the inner layer. This combination provides exceptional durability and corrosion resistance. Over time, the reliable build can withstand the rigours of constant use, ensuring that the product remains effective for many years.
Superior Insulation
Equipped with compressed rockwool insulation (200kg/m³), the flue maximises thermal retention. This means that heat is effectively transferred and retained, reducing energy wastage and ultimately improving the overall efficiency of your heating appliance. The impressive insulation capability is especially important for maintaining consistent performance in both colder and warmer climates.
Certification and Safety
Safety is a critical factor in any chimney installation. This product is HETAS Approved and CE marked, which means it complies with stringent safety regulations and industry standards. These certifications provide peace of mind, assuring you that the product is designed to offer safe and efficient performance.
Installation & Safety Guidelines
One of the standout features of the Adjustable Pipe is its ease of installation. The screwless design, utilising a Locking Band, simplifies the process and eliminates the need for additional fasteners. Follow these key steps to ensure a safe and effective installation:
1. Measure and adjust the pipe length accurately between 250mm and 350mm using the body-soluble ceramic blanket.
2. Align the components carefully and secure them together using the Locking Band.
3. Ensure to maintain a minimum clearance of 50mm from any combustible material to uphold safety standards.
4. Verify that all components are in excellent condition and adhere to the recommended safety guidelines prior to use.
Adhering to these installation details will help ensure that your chimney system operates safely throughout its lifespan.
Optional Accessories and Complementary Products
To further enhance your chimney system, National Flues offers a range of optional accessories that work in tandem with the Adjustable Pipe. Accessories such as additional insulation materials, flashing kits, and chimney caps can all provide extra levels of performance and protection. These accessories can help improve weather resistance, prevent downdrafts, and streamline the overall installation process. We highly recommend exploring these options to optimise the performance and longevity of your chimney system.
Addressing Common Objections
Many customers are concerned about the installation complexity or compatibility with various heating appliances. The Adjustable Pipe is designed with simplicity in mind. With its intuitive design and secure Locking Band system, installation becomes a straightforward process that reduces the need for complex tools or professional intervention. Furthermore, the dual-layer insulation and robust stainless steel construction ensure that the flue remains durable in different operational scenarios. Whether you are installing a new system or upgrading an existing one, the flexibility of adjustable length combined with high-standard safety certifications makes this product an excellent choice.
Final Thoughts
In summary, the Adjustable Twin Wall Insulated Chimney Flue Pipe represents an ideal balance of versatility, safety, and durability. Its adjustable length, robust construction, and ease of installation are key elements that can significantly enhance the overall efficiency of your heating system. Additionally, by considering complementary accessories offered by National Flues, you can further personalise and optimise your chimney setup to meet specific needs. Taking the time to understand all the features and benefits can not only improve the reliability of your heating appliance but also ensure that you enjoy a long-lasting, safe, and energy-efficient solution for your home. Embrace the opportunity to upgrade your chimney system with a product that meets stringent industry standards while offering attractive ease of use and adaptability.
Buy now or call 01670 206 999.
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