国内外越来越多的国家和组织颁布相关的法规及标准,对工业污染物的排放提出量化要求,其中阀门外漏几乎占据挥发性有机污染物来源的一半,为更好地指导天然气行业中阀门外漏相关技术要求的提出,有必要对阀门逸散相关标准中的试验内容及程序进行对比以及对阀门本身外泄漏点进行分析。对比结果表明，不同标准之间试验条件和验收标准不尽相同,填料部位为阀门外漏控制的关键。当前实现阀门低泄漏的方式中,采用低泄漏填料最为经济有效。在工程设计过程中,应根据不同的工况按照标准的规定提出合理的逸散等级要求。

 More and more countries and organizations at home and abroad have issued relevant regulations and standards to quantify the discharge of industrial pollutants,among which valve leakage accounts for almost half of all pollutant sources.In order to better guide the technical requirements of valve leakage in natural gas industry,it is necessary to compare the related standards of valve fugitive emission (FE) and analyze the leakage point of the valve itself.The comparison mainly includes basic information (test object, test type, test medium, test method), tightness class, endurance class, temperature class.The results show that the test conditions and acceptance criteria are not the same among different standardsandvalve stem packingis the key to the control of valve external leakage.Among the currently available means of controlling fugitive emission from a valve, the use of leak-tight packing material is the most economical way.In the process of engineering design, reasonable FE class requirements should be put forward according to different working conditions and standard requirements.