For many years at this point Roots Roots Vacuum Pump china 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 plenty of advantages.
Features:
The main advantage 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 rotors and the 
end cover, therefore the pump performance is usually stable and long service time. low maintenance cost
Applications:
They’re trusted 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 substance, pharmaceutical and other industries require large vapor degassing capablity. the sealing structure of roots vacuum pump chamber and the bearing chamber provides improved, which greatly reducing the bearing cavity and gear cavity oil emulsification. Thus, roots vacuum pump is more ideal for pumping large quantities of water vapor and solvent with drinking water ring vacuum pump.