The HVST 120/120 step dryer is ideally suited for regrind or granulates of all thermoplastics and is especially recommended for PET and other hard plastics. As a central component of washing lines from Herbold Meckesheim, the HVST reduces material loss due to fines formation compared to conventional centrifugal dryers thanks to the multi-stage, gentle and, moreover, energy-efficient process. Residual moistures of far less than one percent can be achieved with this step dryer.