Centrifugal Fan Volume Control Damper

A centrifugal fan running at a fixed speed essentially provides a fixed airflow curve. But in real-world systems, this same air needs to be trimmed, balanced or completely shut off at different points in the ductwork. A Centrifugal Fan Volume Control Damper installed inline within the round ducting essentially does the job of controlling this airflow. It has a set of linked parallel blades that open or close together, allowing for precise airflow volume adjustments without any disruption to inlet or discharge transitions. This makes it an easy retrofit or new installation component that can be used to balance airflow between multiple branches or zones fed by the same fan. This is a very effective component, especially for balancing the perfect airflow between multiple branches or zones fed by a single fan.

Its frame and blade set are made of 16-gauge or 1.2 mm thick galvanized steel, following standard industry practice. To ensure that the blades maintain stiffness under airflow pressure, they are made in a flat or roll-formed design. Blade movement can be manually operated with a hand quadrant for fixed balancing. If you want remote and automatic control, you can also fully automate it with a pneumatic or electric actuator. This Centrifugal Fan Volume Control Damper configuration is usually used when you want to fine-tune or automate the airflow following a centrifugal fan without going through the hassle of redesigning the entire ductwork.

• Manual hand-quadrant control.
• Pneumatic actuator control.
• Electric actuator control.
• Galvanized steel frame and blade construction.
• Flanged connection for direct duct mounting.

To order: Contact us with your duct diameter, required control type (manual, pneumatic or electric) and mounting orientation so the damper can be sized and configured to match your ductwork layout.