DIN EN ISO 5211:2023-07 工业阀门 - 部分回转执行器附件 (ISO/FDIS 5211:2023)
Industrial valves - Part-turn actuator attachments (ISO/FDIS 5211:2023); German and English version prEN ISO 5211:2023 / Note: Date of issue 2023-06-16*Intended as replacement for DIN EN ISO 5211 (2017-08).