Single Stage Rotary Piston Vacuum Pump functions with full pumping speed down to 1.33 mbar and can be operated continuously at any pressure up to 133 mbar. The Vacuum Pump offers quiet and vibration free operation. The Rotary Piston Vacuum Pump is equipped with adjustable gas ballast valve which permits handling of condensable vapours. Single Stage Rotary Piston Vacuum Pump ensures no metal-to-metal contact within pumping chamber and can be easily installed.