DANSK DS/EN ISO 15848-1/A1:2015 工业阀门 无组织排放的测量、试验和鉴定程序 第1部分：阀门型式试验的分类系统和鉴定程序
Industrial valves - Measurement, test and qualification procedures for fugitive emissions - Part 1: Classification system and qualification procedures for type testing of valves