This standard covers the minimum requirements for reciprocating compressors and their drivers for use in petroleum, chemical, and gas industry services for handling process air or gas with either lubricated or nonlubricated cylinders. Compressors covered by this standard are low- to moderate-speed machines. Also included are related lubrication systems, controls, instrumentation, intercoolers, aftercoolers, pulsation suppression devices, and other auxiliary equipment. Compressors not covered by this standard are as follows: a) integral gas engine–driven compressors; b) compressors with single-acting trunk-type (automotive-type) pistons that also serve as crossheads; c) either plant or instrument-air compressors that discharge at a gauge pressure of 9 bar (125 psig) or below; d) diaphragm compressors.
