本出版物规定了与压缩气体一起使用的调节器的要求，以将储存气瓶、管道或其他来源的供应压力降低至使用压力。本出版物包含与压力调节器的材料、结构、性能、试验程序、信息、标记和包装有关的设计和制造要求。附录A提供了与调节器流量计算有关的信息。对于用于医用气体的压力调节器，CGA E-7《医用气体压力调节器、流量计和孔板流量选择器》中规定了附加要求。本出版物不适用于按照NFPA 58《液化石油气规范》要求安装和使用的设备的液化石油气（LPG）调压器。

This publication specifies requirements for regulators used with compressed gases to reduce the supply pressure from a storage cylinder, pipeline, or other source to the use pressure.This publication contains design and manufacturing requirements relating to materials, construction, performance, test procedures, information, marking, and packaging of pressure regulators. Appendix A provides information relating to regulator flow capacity calculations. For pressure regulators used with medical gases, additional requirements are specified in CGA E-7, Medical Gas Pressure Regulators, Flowmeters, and Orifice Flow Selectors.This publication does not apply to liquefied petroleum gas (LPG) pressure regulators for equipment intended for installation and use in accordance with the requirements of NFPA 58, Liquefied Petroleum Gas Code.