Pneumatic vibrators and air cannons are powered by compressed air to facilitate the smooth flow of materials, prevent clogs, and increase productivity. Turbine and ball vibrators utilize rotational force of unbalanced internal components to generate vibration. Piston pneumatic vibrators utilize the linear impacts of an internal rod moving up and down. High frequency pneumatic vibrators utilize internal unbalanced rotation at increased speed and force. Heavy-duty pneumatic vibrators generate high force internal unbalanced rotation at low frequency. Air cannon pneumatic tanks introduce a blast of pressurized air to keep materials moving.