... 0.098Mpa Desk type stainless steel SHB-IIIA water circulating vacuum pump I. The uses of vacuum pump: ... ZL02326871.9) The series of Multi-purpose Circulating Water Vacuum Pump takes circulating water as working fluid, uses the negative ... vacuum condition for the processes of evaporation, distillation, crystallization, drying, sublimation, filtration and decompression, degassing and so on, particularly ...