Back Valve for Exhaust/Intake Fan Ø250

The fan valve has the function of closing the vent fan opening when it is inactive.

When grown in a room with a strong odor, this prevents the odor from coming out through the fan body and the exhaust in the space around it.

The valve wings open under the pressure created by the airflow and then automatically close with the spring work. The valve is equipped with a special foam rubber filler reducing the noise level during its operation and ensuring the integrity of the system

Diameter: Ø150mm