InletVanes designed are with or without acenter hub. Without a center hub,the design requires the use of twoshaft bearings per shaft. This allowsall bearings and linkage to be locatedexternal of the flow stream. Thisconfiguration provides less pressuredrop than the center hub design.
Inlet Vane dampers are available in sizes from 8″ diameter to 144″ diameter and can be constructed from any weldable alloy. The main function of an Inlet Vane damper is to provide modulating control of the air flow into the fan and at the same time provide a “pre-spin” condition of inlet air, which enhances the performance of the fan.
A customer supplied cone spinning can be incorporated into a standard Inlet Vane design to provide a nested Inlet Vane. Nested Inlet Vanes are utilized when a transition is required from existing duct work to the fan inlet.