text: compartments: pumping and gear chambers are separated by using labyrinth seals., As two claws rotate in opposite
  direction, the air will be sucked in the pumping chamber, compressed and discharged under pressure. In gear
  chamber, two gears for synchronizing of claws rotation will be placed with appropriate oil lubrication. A built in antisuck
  back valve installed in inlet flange will prevent the air from flowing back into the vacuum chamber when the