Reciprocating air compressors or piston compressors are widely considered as ‘work-horse’ compressors. They may be seen in the corner of the garage, in auto body and tire shops, woodworking facilities, hospitals, construction sites, amusement parks, and industrial facilities. Industrial reciprocating compressors are able to operate in a severe duty environment, have lower initial costs, lower maintenance costs, and are ideal for intermittent duty operation. They save energy in no-load conditions and operate efficiently at partial loads, which results in a higher overall efficiency for many diverse applications. Piston compressors are more forgiving than rotaries and normally operate more dependably in less than ideal conditions.