SK/2SK type of water circulating vacuum pump has such advatages: less noise, can such out normal gas, inflammable and explosive gas, and the wter steam. If the main parts are changed with material or done anticorrosive treatment, it can also suck out the corroisive gas. 2YK type of oil circulating vacuum pump has high vacuum and can fit for operating strongly. It's widely used in the vacuum-plant treatment of metallurgy, medical industry, food, electrical power, medicine, etc.
