Less than a

After the air filter, the air passes through the inlet valve, which is designed to adjust the compressor performance. Further, the air enters the screw unit consisting of a case and a screw pair, or a compression head, as it is often called. This is one of the most vulnerable elements in the compressor, since the gaps between the rotors are less than a millimeter and the hit of extraneous particles can lead to jamming of the screw pair.