Screw pumps are primarily used in applications across many different industries where clean, oil free vacuum is needed. The dry and contact free operation requires no lubrication in the pumping chamber leading to no process contamination and no pollution caused by the pump operation.

In the pump housing, two parallel screw rotors, both timing gear synchronized, turn in opposite directions without friction and at very tight clearances. Gas is compressed in the direction of the discharge port. Cooling is achieved using a water cooled outer chamber.