规定了适用于天然气压缩机的要求，该压缩机设计为适用于机械、电气或液压驱动的连续满负荷工作，并用于气瓶填充应用，以及其控制系统和基本安全设备。此类压缩机通常（但不一定）是多级往复式压缩机，其冷却润滑气缸为树干式或十字头设计。

Specifies requirements that apply to natural gas compressors designed as suitable for continuous full load duty, mechanically, electrically or hydraulically powered and intended for cylinder refilling applications, together with their control systems and essential safety equipment. Such compressors are usually, but not necessarily, multistage reciprocating compressors with cooled lubricated cylinders of either trunk type or crosshead design.