ISO 7291:2010规定了焊接、切割和相关工艺中使用的歧管系统中压力调节器的要求和测试方法，用于:a)高达30 MPa(300 bar)的压缩气体；b)溶解的乙炔；c)液化石油气(LPG)；d)甲基乙炔？丙烷？混合物(MP)；e)二氧化碳(CO2)。 它不适用于ISO 2503中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.