Under 50 feet – Mechanical Conveying: Augers, U-Troughs, Vibratory, AeroMechanical or small venturi based pneumatic system. 50 to 600 feet with a few turns – Pneumatic Conveying: Dilute Phase, Dense Phase. Over 1,000 feet – Mechanical Conveying: usually Belt or Drag Chain. Conveying Rate Guidelines: Under 1,000 pounds/hour – Mechanical ...Web