Inlet Vane Control Dampers

Inlet vane control dampers offer an energy saving alternative to the conventional damper.

Inlet vane control dampers alter the performance of a fan by pre-spinning gas before it enters the impeller as opposed to merely reducing the volume of gas entering the system (as is the case with conventional dampers).

When inlet vanes are fully open their resistance is negligible. As the vanes are closed the air enters the impeller with the same direction of rotation as the impeller. This causes a reduction in the total pressure generated across the impeller and the amount of power required, thus giving energy savings.

Inlet vane control enables the fan duty to be controlled with constant resistance, constant pressure and constant volume flow systems.