For many years today Roots vacuum pumps have been well established in the area of vacuum technology. In mixture with backing pumps, which compress against the atmosphere, these pumps offer lots of advantages.
Features:
The main benefit of roots vacuum pump is a high pumping speed at the low inlet pressure with high ultimate vacuum. Because the pump operating parts haven’t any contact, such as rotors and the end cover, so the pump performance is definitely 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 pharmaceutical, electric vacuum gadget manufacturing industries.
In view of the chemical, pharmaceutical and additional industries require huge vapor degassing capablity. the sealing framework of roots vacuum pump chamber and the bearing chamber has improved, which greatly 
reducing the bearing cavity and equipment cavity oil emulsification. Therefore, roots vacuum pump is usually more suitable for pumping large levels of drinking water vapor and solvent with drinking water ring vacuum pump.