LC-VWP series circulating water vacuum pump provides vacuum conditions for evaporation, distillation, crystallization, drying, sublimation, filtration depressurization, degassing, and other processes. Circulating water vacuum pumps are oil-free, chemical resistant, and easy-to-maintain. Particularly be suitable for labs and small scale test of industries such as universities and colleges, scientific research institutes, chemical industry, pharmacy, biochemistry, foodstuff, pesticide, agricultural engineering, biological engineering.