Twin Wall Flue
Twin wall flues, also known as insulated flue pipes, are a modern and efficient solution for venting flue gases, chemical, and oxidizing gases from furnaces and stoves operating on oil, gas, solid fuels, and biomass..
Insulated flue pipes consist of two layers of stainless steel with thermal insulation placed between them. This construction reduces heat loss, prevents condensation, and ensures a longer lifespan for the system.
With our insulated stainless steel (inox) chimney flues made of inox AISI 304, you can build a high-quality insulated chimney.
The flues offered by Balkanenergy are double-insulated inox flue pipes with frontal laser welding, finished with male and female connectors.
The insulation material used in the chimney pipes is ceramic fiber with a density of 92 kg/m3. The assembly of the inox chimney pipes is extremely precise, eliminating the need for clamping brackets or silicone seals.
The operating temperature of our stainless steel AISI 304 chimney pipes is 400°C, while the maximum temperature they can withstand is 1000°C. The flue pipes with frontal laser welding are manufactured in accordance with European and International standards.
Insulated inox chimneys are a cost-effective alternative to traditional masonry chimneys. They are most commonly used for building external chimneys on buildings or for passing through flammable sections where insulation is mandatory.
Advantages of twin wall flues made of AISI 304:
- Corrosion resistance – inox AISI 304 is ideal for aggressive environments and variable climatic conditions.
- Thermal insulation – effectively reduces heat loss and prevents condensation.
- Safety – insulation reduces the risk of overheating and fire.
- Easy installation – the modular design facilitates installation and adaptation to different configurations.
- Long service life – material durability ensures reliability for years to come.
How to choose the right insulated chimney flue?
When choosing an insulated flue pipe, it is important to consider:
- Diameter – align with the requirements of your heating appliance.
- Material – inox AISI 304 is an excellent choice for durability and resistance.
- Insulation thickness – the standard insulation is 25-50 mm, providing optimal protection.
- Type of heating appliance – different appliances (fireplaces, boilers, stoves) require different flue pipe characteristics.
- Chimney height – proper height calculation is essential for effective flue gas evacuation.
- Installation location – different insulated chimney flue pipes may be required for external and internal installations.
Insulated stainless steel chimneys are a good alternative with prices competitive with the masonry chimney. They are most often used in the construction of external chimneys of buildings or for placing the chimney through areas that are easily flammable and insulation is mandatory. According to the location of the elements for building a chimney, our insulated stainless steel chimneys are divided into:
- Straight twin wall flues - Straight twin wall flues are insulated chimneys that are used to build the vertical part of the chimney. The standard length of straight insulated chimneys is 100 cm, but we also offer straight chimneys with a length of 50 cm, as well as telescopic insulated chimneys. When calculating the total length for your chimney 6cm should be removed from the final value because of the connections between the elements. For more precise heating systems we also offer insulated chimneys with built-in thermometer and inspection opening.
- Twin wall elbow flue - twin wall elbows are insulated chimneys that are used to change the direction of the chimney. According to the angle, the knees are divided into: knee 90 ° and knee 45 °. It is recommended not to use the elbows more than 3 times in one heating system, as this would make it difficult to remove the flue gases.
- Twin wall tee flue - the twin wall tee is an insulated chimney body that is used to build any outdoor chimney. Each tee contains a condensate cap with an opening through which condensate drains. The condensate tee cap is detachable, giving you direct access to clean your chimney. According to the angle of connection to the chimney, the tees are divided into two types: T tee and U tee.
Frequently Asked Questions about Twin Wall Flue Pipes
Why do I need a twin wall flue pipe?
It provides better thermal efficiency and prevents overheating of surrounding materials.
How long do twin wall flue pipes last?
With proper maintenance, they can last for decades.
How should flue pipes be maintained?
Regular cleaning and inspections by professionals are recommended.
Can I install a twin wall flue pipe myself?
It is advisable to have the installation done by a qualified specialist.
What are the benefits of stainless steel flue pipes?
They are corrosion-resistant and suitable for various types of fuel.
What should I do if I notice damage to the flue pipe?
Immediately contact a specialist for inspection and repair.
Can twin wall flue pipes be used for pellet stoves?
Yes, twin wall flue pipes are suitable for pellet stoves.
How do I choose the correct flue pipe diameter?
The diameter should match the requirements of your heating system.
Can insulated flue pipes be used for gas boilers?
Yes, they are also suitable for gas boilers.
What are the risks of improper flue pipe installation?
Improper installation can lead to fires and reduced efficiency of the heating system.