For many years now Roots vacuum pumps have been well established in the region of vacuum technology. In combination with backing pumps, which compress against the atmosphere, these pumps offer lots 
of advantages.
Features:
The main advantage of roots vacuum pump is a high pumping speed at the low inlet pressure with high ultimate vacuum. Because the pump operating parts have no contact, such as rotors and the finish cover, therefore the pump performance is usually stable and lengthy service time. low maintenance cost
Applications:
They’re widely used in vacuum smelting, vacuum welding, vacuum casting, vacuum coating, vacuum drying, vacuum dynamic experiment and chemical substance pharmaceutical, electric vacuum device manufacturing industries.
Because of the chemical, pharmaceutical and other industries Roots Vacuum Pump china require huge vapor degassing capablity. the sealing structure of roots vacuum pump chamber and the bearing chamber offers improved, which significantly reducing the bearing cavity and equipment cavity oil emulsification. Therefore, roots vacuum pump can be more ideal for pumping large quantities of water vapor and solvent with water ring vacuum pump.