就压力风险而言，本文件规定了符合EN 3-7:2004+A1:2007要求的金属体便携式灭火器的设计、型式试验、制造和检查控制规则。EN 3的本部分适用于最大允许压力PS低于或等于30 bar且含有非爆炸性、非易燃、无毒和非氧化性液体的便携式灭火器。本文件也适用于金属推进剂气瓶的标记（见附录E）。本文件不适用于二氧化碳灭火器。

This document specifies, as far as the pressure risk is concerned, the rules of design, type testing, fabrication and inspection control of portable fire extinguishers with a metallic body which comply with the requirements of EN 3-7:2004+A1:2007.This part of EN 3 applies to portable fire extinguishers of which the maximum allowable pressure PS is lower than or equal to 30 bar and containing non-explosive, non-flammable, non-toxic and non-oxidising fluids.This document also applies to the marking of metallic propellant gas cartridges (see Annex E).This document does not apply to carbon dioxide fire extinguishers.