AGP Style – Agri-Press® Screw Press

The PT&M Agri-Press® Screw Press is the best method for separation of liquids from primary or non-biological solids. Inside the press free water drains off as the material conveys down the screw. At a certain point the volume of the screw reduces and the liquid in the material is squeezed out by pressure.

A set of air cylinders are connected to a pressure plate (cone). The cone builds a back pressure causing more liquid to be compressed out. The air driven cone allows the press to maintain consistent dryness of discharge solids over a large range up to the limit of mechanical dryness. The pneumatic cylinders are adjusted by a valve which allows the operator to control the desired dryness of the solids.

The discharged solids now void of free water and in a compressed moist state (35-60% solids), can be stored for a long term without odor or attracting flies and other pests.


  • Spent brewer’s grains
  • Fiberglass
  • Manure
  • Diatomaceous earth
  • Citrus wastes
  • Vegetable wastes
  • Sugar beets
  • Alfalfa
  • Miscellaneous industrial waste streams
    Agri-Press AGP-800 Screw Press
    AGP 800 Agricultural Screw Press
    Agri-Press AGP-1600 Agricultural Screw Press