Stainless steel Nauta Mixer or Vertical Mixer - 500Litre The vertical auger rotates around the inside of the conical vessel lifting material up from the bottom as it rotates to ensure a consistent mixing action. Bottom discharge via a sliding gate, allows all product mixed to be emptied from the vessel. SEW 2.2kw geared motor drive on the auger and rotator, 415V Used for mixing dry powders. Pneumatic sliding gate discharge valve Electrical control box.