For many years at this point Roots vacuum pumps have been well established in the area 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 have no contact, such as rotors and the end cover, therefore the pump functionality is stable and long service time. zero-maintenance cost
Applications:
They’re trusted in vacuum smelting, vacuum welding, vacuum Roots Vacuum Pump china casting, vacuum coating, vacuum drying, vacuum dynamic experiment and chemical pharmaceutical, electric vacuum device manufacturing industries.
In view of the chemical substance, pharmaceutical and additional industries require large vapor degassing capablity. the sealing framework of roots vacuum pump chamber and the bearing chamber offers improved, which greatly reducing the bearing cavity and equipment cavity oil emulsification. Therefore, roots vacuum pump is more ideal for pumping large quantities of water vapor and solvent with water ring vacuum pump.