Piston type vacuum pumps and compressors are being used where 
Piston Vacuum Pump oil-free air is a must. The oil free personality of the pump is definitely a guaranty of zero-maintenance costs. The pumps are available in capacities of maximum 6 m3/hr plus they are capable to reach a vacuum of 10 mbar(a). Used since a compressor they reach a pressure of approx. 7 bar(g) optimum.
These pumps are getting used for light commercial works, medical industry, printing and device industry, plastic, meals and packaging, electronic, chemical substance and textile industry.