标准编号：ISO 21922:2021
中文名称：制冷系统和热泵 阀门 要求，试验和标记
英文名称：Refrigerating systems and heat pumps — Valves — Requirements, testing and marking
发布日期：2021-08
标准范围
This document specifies safety requirements, certain functional requirements, and marking of valves and other components with similar bodies, hereinafter called valves, for use in refrigerating systems including heat pumps.
This document includes requirements for valves with extension pipes.
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