Get current pricing for Bolz-summix, DF-17.5-VDO 175 Liter (approx. 6 Cu.ft.) Bolz-summix Conical Vacuum Dryer. Model Df-17.5-vdo. Vessel Pressure Rating 30 F/v, Jacket Pressure Rating 60 Psi, M . Product Category: Process Equipment, Sub Category: Process Dryers: