Pump Vacuum Cc-31ed. Rotary vane high vacuum pump, oil sealed and ideally suited for use in education. This unit is relatively quiet in use, can be operated for long periods of time, is robust, and is engineered for school use. The large oil capacity of 350 mL provides for long operation between oil changes. An oil level sight glass is incorporated so that the oil can be monitored. Model: Javac CC-31ED Air displacement: 40 L/minute Ultimate vacuum: 25 micron 8 mm rubber hose fitting Dimensions (L W H): 330 135 255 mm Weight: 9.8 kg