Onion Dehydration Plant has a 40 mm screen mesh hole to eliminate - 40 mm onions. More 40 mm onions are fed into the second grader, which has a 75 mm screen mesh hole to eliminate the - 75mm onions.The steam system gathers and regulates the steam generated by the boiler. Steam is delivered to the site of usage by a pipe system.Onion Dehydration Plant is used to drive relatively large amounts of air through a shallow grain depth to achieve a quick drying pace, allowing the producer to tolerate higher harvest rates than with other forms of in-bin drying.