ISO 7291:2010规定了用于焊接，切割和相关工艺的歧管系统中压力调节器的要求和测试方法:a）高达30 MPa（300 bar）的压缩气体; b）溶解乙炔; c）液化石油气（LPG）; d）甲基乙炔 - 丙二烯混合物（MPS）; e）二氧化碳（CO2）。 它不适用于ISO 2503定义的直接安装在气瓶上的压力调节器

ISO 7291:2010 specifies requirements and test methods for pressure regulators in manifold systems used in welding, cutting, and allied processes for: a) compressed gases up to 30 MPa (300 bar); b) dissolved acetylene; c) liquefied petroleum gases (LPG); d) methylacetylene‑propadiene‑mixtures (MPS); e) carbon dioxide (CO2). It is not applicable to pressure regulators fitted directly to the gas cylinders, as defined in ISO 2503.