Characteristics of Roots vacuum pump:

(1) The rotor and vacuum pump chamber, rotor and rotor of the Roots vacuum pump have a very small distance from each other, so that they do not rub against each other and do not need to be lubricated with oil.

(2) The rotor of Roots vacuum pump has good geometric symmetry, which is helpful for the improvement of rotational speed and enables it to produce Roots vacuum pumps with large pumping capacity with very tight structure.

(3) There is no compression phenomenon in the pump chamber like water ring vacuum pumps, so Roots vacuum pumps do not need exhaust valves. Because of this, Roots vacuum pumps can be used to pump out condensable gases.

(4) Roots vacuum pump starts quickly, the ultimate vacuum can be reached in a very short time. Moreover, the motor power is relatively small, and the operation and maintenance costs are relatively low.