What is vacuum?
How a venturi works
The COVAL vacuum pump works on the Venturi principle. The filtered, nonlubricated compressed air in A is blown across nozzle D and speeds up. It then goes into mixer E and finally escapes through silencer B. The vacuum is caused by the pressure drop in the chamber around nozzle D. The air sucked out C follows the same route to finish in the silencer B
Pressure unit conversion
Conversion according to the percentage of vacuum
