本欧洲标准规定了将带有或不带齿轮箱的回转执行器连接到工业阀门的要求。 仅当供应商和采购方达成协议后，部分回转执行器与控制阀的连接才符合本标准的要求。该标准规定: - 将部分回转执行器连接到工业阀门（见图1）或中间支架所需的法兰尺寸（见图1）; - 将驱动部件附接到驱动部件所需的部分转向执行器的驱动部件尺寸; - 具有本标准规定尺寸的接口和联轴器转矩的参考值。中间支撑件与阀的连接不是本标准的主题。注1:在本标准中，术语“阀”也可以被理解为包括“具有中间支撑的阀”（参见图1） 1）。注2:当部分转向执行机构是多回转执行器和变速箱的组合时，变速箱的多回转执行器附件应符合EN ISO 5210标准

ISO 5211:2017 specifies requirements for the attachment of part-turn actuators, with or without gearboxes, to industrial valves. The attachment of part-turn actuators to control valves in accordance with the requirements of this document is subject to an agreement between the supplier and the purchaser. ISO 5211:2017 specifies: - flange dimensions necessary for the attachment of part-turn actuators to industrial valves [see Figures 1 a) and 1 c)] or to intermediate supports [see Figures 1 b) and 1 d)]; - driving component dimensions of part-turn actuators necessary to attach them to the driven components; - reference values for torques for interfaces and for couplings having the dimensions specified in this document. The attachment of the intermediate support to the valve is out of the scope of this document.