JZPS type Roots-Liquid ring vacuum system consists of the main pump I. E. ZJP type Roots vacuum pump and backing pump I. E. Liquid ring vacuum pump,
It can pump not only the commom gas but also the gas that contains vapor and a little dust.
Compared with the commom mechanical vacuum pump and liquid ring vacuum pump, it has some advantages as follows: It can endure the oil, vapor and tiny dust. Its ultimate vacuum is high and its pumping speed in higher vacuum is great. So it is a kind of ideal vacuum-obtaining equipment for drying, dehydrating and gas-expelling in the trade of light-spinning, grocery and chemical industry etc.