The single-stage rotary vane vacuum pumps work with the oil lubrication. The rotor is connected with the motor and it segregates the oil dew from the exhausting air. With the pumps, the condensation can be prevented. This pump is used for the clearance of the closed system.
The different series in single-stage rotary vane pumps
Compact single-stage rotary vane pumps
EM4-8 ultimate pressure:
Oil lubricated vane vacuum pumps are available for Atex Environment.