Vibra Screw Inc. (VSI) invented the Bin Activator over 50 years ago. The VSI Bin Activator uses our proprietary, patented ASME dished head design. It is used for its superior strength and better flow pattern, particularly in larger sizes from 7 to 18 ft diameter. Larger size Bin Activators use more powerful vibrators and the dished head has the inherent strength to handle such vibration forces. It also provides a two slope flow profile which avoids packing of material at the outlet in larger applications.

The VSI Bin Discharger is a bin activator made from a rolled single slope cone. We use it predominantly in smaller sizes up to 6 ft diameter. It is completely satisfactory in smaller sizes since vibration forces are less and the cone volume of the Bin Discharger is small, avoiding packing at the outlet.