TSK-100 round non-return damper
Universal non-return valve for installation in air duct systems.
The non-return valve is equipped with lightweight aluminum louvers that open with airflow from one direction, while remaining closed with (undesired) airflow from the opposite direction (ensure correct orientation during installation). The louvers close automatically due to the internal spring when there is no airflow. Because the housing is equipped with a rubber ring, the louvers close nearly silently.
The non-return valve is often used with range hoods.
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