Piston type vacuum pumps and compressors are being used where oil-free air is crucial. The oil free character of the pump is a guaranty of low maintenance costs. The pumps can be found in capacities of optimum 6 m3/hr and they are capable to reach a vacuum of 10 mbar(a). Used as a compressor they reach a pressure of approx. 
7 bar(g) optimum.
These pumps are becoming used for light industrial functions, medical industry, printing and instrument industry, Piston Vacuum Pump plastic, meals and packaging, electronic, chemical substance and textile industry.