Portable fire extinguishers - Part 9: Additional requirements to EN 3-7 for pressure resistance of CO2 extinguishers
便携式灭火器 - 第9部分:对于二氧化碳灭火器的耐压性 EN 3-7的附加要求
This European Standard specifies the rules of design, assembling, inspection and testing of CO2 portable fire extinguishers as far as the pressure risk is concerned.
NOTE Annex A gives the classification of the different parts forming the assembly of the portable extinguisher.