ANSI Z21.22-2015/CSA 4.4:2015现行
Relief valves for hot water supply systems
出版：Canadian Standards Association
专家解读视频
基本信息
标准编号： ANSI Z21.22-2015/CSA 4.4:2015
出版单位：Canadian Standards Association
标准页数：46
标准简介
This Standard applies to the following types of relief valves constructed entirely of new, unused parts and materials: a) combination temperature and pressure relief valves for use on storage tanks of hot water supply systems without heater input limitation, hereinafter called “T&P” valves; b) valves having only pressure relief features for use on storage tanks of hot water supply systems without heater input limitation; and c) vacuum relief valves.
