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VDS (Vertical Destoning System)

Removing stones and pre-washing of potatoes is essential prior to processing. This helps to avoid unnecessary damage to further processing equipment during the operation of your line.
The PPM Technologies VDS (Vertical Destoning System) provides a simple, effective solution for removing stones and pre-washing product. Potatoes are fed directly to the floating tank where the stones with a higher density will sink to the tank bottom. The potatoes float through the tank and are then lifted by the screw and conveyed to the peeling station. The vertical screw easily elevates product to the necessary elevation of your process line. The unit incorporates trap doors in the floating tank which can be opened after production for removal of stones and sand.


  • Customized elevation to suit your process line
  • Easily remove stones and sand through trap doors
  • High removal efficiency


Potato Products
Potato Chips
French Fries