scope:

This International Standard specifies the requirements for the attachment of multi-turn actuators to valves. Throughout this International Standard, "actuator" may be understood as "actuator and/or gearbox". It specifies: - flange dimensions necessary for the attachment of part-turn actuators to industrial valves [see Figure 1 a)] or to intermediate supports [see Figure 1 b)]; - those driving component dimensions of actuators which are necessary to attach them to the driven components; - reference values for torque and thrust for flanges having the dimensions specified in this International Standard. NOTE In this International standard the term "valve" may also be understood to include "valve with an intermediate support" [see Figure 1 b)]. a) Direct interface b) Intermediate support interface Key 1 multi-turn actuator 2 interface ISO 5210 3 Valve 4 intermediate support Figure 1 - Interface between multi-turn actuator and valve DRAFT INTERNATIONAL STANDARD ISO/DIS 5210:2016(