A Closer Look at Inlet Vane Dampers

Not everything needs to be complicated, but even simple things can make a big difference. Inlet vane dampers are one of those simple things that can have a big positive impact on industrial fan operations, efficiency, and performance.

The inlet vane damper, also commonly called a variable inlet vane damper, attaches directly to the inlet of the fan. The damper blades form a fan-like structure that “pre-spin” the air in the same direction as the fan rotation for more efficient operation.

Other common ways to control airflow include outlet dampers and variable frequency drives (VFDs). The trade-off can be between up-front cost and ongoing efficiency. We always recommend speaking with an application engineer to confirm the best choice for your application.

How to Use an Inlet Vane Damper for Air Flow Control

Controlled using an electric or pneumatic actuator, the inlet damper opens and closes to manage airflow through the fan. To throttle or pre-spin the air, you simply adjust the blades between more open and more closed.

Hear it from an Application Engineer

Chet White, Senior Application Engineer and Sales Manager, demonstrates how the inlet vane damper works in this 18-second video.

Reach out and connect with one of our application engineers to discuss the details of your project and determine the right specifications for your centrifugal fan application.

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