For many years at this point Roots vacuum pumps have already 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 benefit of roots vacuum pump is a higher pumping speed at the low inlet pressure with high ultimate vacuum. Since the pump running parts haven’t any contact, such as for example rotors and the finish cover, therefore the pump performance is stable and lengthy service time. zero-maintenance cost
Applications:
They’re widely used in vacuum smelting, vacuum welding, vacuum casting, vacuum 
coating, vacuum drying, vacuum dynamic experiment and chemical pharmaceutical, electric vacuum device manufacturing industries.
Because of the chemical, pharmaceutical and other industries require huge vapor degassing capablity. the sealing framework of roots vacuum pump chamber and the bearing chamber offers improved, which greatly reducing the bearing cavity and gear cavity oil emulsification. Therefore, roots vacuum pump is definitely more suitable for pumping large levels of water vapor and solvent with drinking water ring vacuum pump.