Vibrators Pneumatic Piston Vibrators for Bins and Hoppers NAVCO®industrial air vibrators are proven in many applications such as baghouses and dust collection, coal fired power plant bunkers and chutes, and in storage vessels for breaking bridges and rat holes in dry bulk materials. BH model pneumatic piston vibrators are available in 8 sizes for small to heavy duty industrial applications. NAVCO® linear air vibrators offer easy, non-invasive installation and the provide reliable material flow solutions. Electromechanical "Rotary" Vibrators Used for both flow aids and vibratory equipment drives, NAVCO Electromechanical vibrators come in over 50 models that deliver 150 to 27,000 pounds of centrifugal force. This is a premium quality Electromechanical vibrator ready for the most rugged of applications.