The PFA line of flat upward flow screen graders comprises hifh efficiency machines tha may grade coffee and grains in up to 8 different sizes.

The PFA graders operate in single load mode (grading in up to 8 sizes) where the product to be graded is fed to the top screen and 8 product fractions are yielded by the 7 grading screens. Due to its upward motion, the beans are forced to stay longer on the screens thus increasing and granding precision.

• high precision interchangeable screens with large grading area;
• small power requirement;
• economy in plant floor area;
• automatic screen cleaning system consisting of rubber balls that bounce under the screen;
• wide range of capacities in order to enable high-efficiency of grading in both small and large installations;
• simple operation and maintenance;
• outlet chutes for manual bagging (smaller models) or for direct connection to the next machine;
• no special foundations required due to its upward motion that does not transmit vibration to the base of the machine.