Flue gas duct DN80, polypropylene, up to 120°C, for installation in a 500mm shaft 2651502

Exhaust ducts made of plastic for ventilation systems

This component of the exhaust gas removal system has been designed for the safe and durable evacuation of flue gases from heating appliances, such as condensing boilers. Made of polypropylene (PP), this material exhibits high chemical resistance to the effects of condensate acids, which is crucial in modern low-temperature installations. The duct is intended for continuous operation at temperatures up to 120°C, meeting the requirements of most standard gas boilers. Its design allows installation inside ventilation shafts with a minimum width of 500 mm, facilitating planning for installations in multi-family buildings or during the modernization of existing chimneys.

Application and material properties

The primary function of this pipe section is to connect individual elements of the exhaust system, ensuring tightness and continuous gas flow. Thanks to its nominal diameter of DN 80 (corresponding to an outer connection diameter of 80 mm), this component fits perfectly with standard connections of heating appliances and other WOLF system components. The polypropylene material not only protects against corrosion but also significantly reduces the overall weight of the installation compared to traditional steel or ceramic systems. This is important for installers working at heights or in hard-to-reach locations – lighter ducts are easier to mount and adjust.

It is worth noting that the use of plastic eliminates the risk of rust forming on the inner wall of the duct, which could lead to blockages or leaks over time. This duct is part of a modular system, meaning it can be easily connected with other parts, such as elbows, wall penetrations, or brackets, to create a complete exhaust gas circuit tailored to the specific building requirements.

Key features and installation benefits

The basic parameters of this product determine its application under specific technical conditions. The duct is made of polypropylene (PP), which provides resistance to chemical corrosion caused by acid condensation. The nominal diameter is DN 80, and the exact outer connection diameter is 80 mm, ensuring compatibility with typical heating appliances. The maximum operating temperature reaches 120°C, which is sufficient for most condensing boilers. The design enables installation in shafts with a minimum width of 500 mm, and the section itself has a length of 500 mm.

For professional installers, the ease of cutting and joining components made from this material is crucial – it does not require specialized welding tools like stainless steel, and connections are often made using push-fit methods or sealed with rubber rings (depending on the specific system model). For the end user, this means quieter operation of the heating appliance (plastic dampens vibrations better than metal) and eliminates the need for frequent cleaning inspections due to soot accumulation on the smooth PP inner walls.

• Polypropylene neutralizes the effects of condensate acids formed during natural gas combustion, protecting the installation from chemical degradation.
• The lightweight construction facilitates transport and installation in challenging shaft conditions without the need for heavy lifting equipment.
• Smooth inner walls ensure system tightness and prevent flue gas leakage into technical rooms or apartments adjacent to the shaft.
• The modular system allows easy adaptation of the exhaust gas route to the dimensions of the technical room using standard DN 80 diameters.

Please note that when installing in shafts, appropriate clearances from other installations must be maintained in accordance with building regulations, and the duct itself should be mounted to avoid thermal stresses during boiler operating cycles. This specific 500 mm long model is particularly suitable as a connecting element or as a section to adjust the exhaust gas route length to the dimensions of the technical room.