Rotary Valves are compact devices widely used in bulk handling systems to control the discharge of powders and granular solids, normally under gravity, between two parts of a system; usually when there is a gas pressure differential between the two parts.
By definition, in their basic construction - ignoring any drive, they are the simplest of machines each incorporating just one moving element; a multi-vane rotor.
Whereas the compact and economic simplicity
of rotary valves provided for continuous development over time to become highly versatile devices, and
are now established as important, reliable, and often vital components when correctly specified for the application.
