VR series Vacuum Pump System

vacuum pump pump
VR series vacuum pump systems described here have been designed for rough and medium vacuum operation, i.e. for the pressure range from atmospheric pressure down to 10-4 mbar (7.5 x 10-5 Torr). VR pump systems consist of a combination of individual pumps whereby Roots vacuum pumps are employed on the intake side. Further compression to atmospheric pressure may be performed either by oil-sealed or dry-compressing vacuum pumps, liquid ring pumps or Roots vacuum pumps with pre-inlet cooling. All combinations may be equipped at suitable places with condensers. 
Specifications
1. Own the imported roots pump; 
2. The pressure range from atmospheric pressure down to 10-4 mbar (7.5 x 10-5 Torr);