Europlast AV125 Non-Return Valve for 125 mm Ventilation Ducts

The Europlast AV125 non-return valve is a specialized component engineered for 125 mm diameter ventilation ducts. This device is designed to regulate airflow direction within ventilation systems, ensuring that air moves only in the intended direction and preventing backdrafts. Constructed from high-quality, durable plastic, it provides a reliable solution for maintaining the integrity of air extraction systems in both residential and commercial environments.

Advantages

The primary benefit of the Europlast AV125 is its ability to effectively block unwanted air from entering the premises through the ventilation duct. By preventing air reversal, it stops cold drafts, external odors, and pollutants from infiltrating indoor spaces when the ventilation fan is not in operation. Its lightweight plastic construction ensures minimal resistance to airflow while maintaining structural durability, and the straightforward design allows for quick and efficient integration into existing ductwork.

Suitable for

• Residential kitchen and bathroom ventilation systems
• Commercial air extraction setups
• Preventing cold air ingress in ventilation ducts
• Reducing odor transfer between rooms via shared ventilation shafts

This valve is not suitable for high-temperature industrial exhaust systems where temperatures exceed the heat resistance limits of the plastic material. It is also not intended for use in systems handling corrosive gases or heavy particulate matter that could obstruct the movement of the valve flaps.

Key specifications

• Compatible duct diameter: 125 mm
• Material: Durable plastic
• Function: Backdraft prevention
• Installation type: In-duct mounting

To install the Europlast AV125, simply insert the valve into the 125 mm ventilation duct. Ensure that the orientation of the valve aligns with the direction of the airflow. It is typically placed directly behind the ventilation fan or within the duct run to ensure the flaps can open and close freely without obstruction. Secure the unit firmly within the duct to prevent vibration or displacement during operation.

What to consider before purchase

• Verify that your duct diameter is exactly 125 mm
• Ensure there is sufficient space within the duct for the valve flaps to open fully
• Check the airflow direction of your existing system before installation

For optimal performance, inspect the valve periodically to ensure that dust or debris does not accumulate on the flaps, which could hinder their ability to close completely. Regular cleaning will maintain the effectiveness of the backdraft prevention mechanism.