ISO 5210:2017 pdf download

ISO 5210:2017 pdf download.Industrial valves Multi-turn valve actuator attachments
1 Scope
This document specifies the requirements for the attachment of multi-turn actuators to valves.
Throughout this document , “actuator” may be understood as “actuator andjor gearbox” providing a multi-turn andjor linear outpu t.
It specifies:
flange dimensions necessary for the attachment of actuators to industria l valves [see Figure 1 a)] or to intermediate supports 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 document.
NOTE 1 In this document , the term “valve” may also be understood to include “valve with an intermediate support” b)].
NOTE 2 When a combination of a mu lt i -turn actuator and separate multi-tu rnjlinear gearbox is coupled to form an multi- turn attachment to the gearbox is in accordance with this document
and .1..d )]. A combination of a multi-turn actuator with integral multi-tu rnj lin ear gearbox supplied as an actuator is in accordance with and 1…b ).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references , o nly the edition cited applies. For undated references , the latest edition of the referenced document (including any amendments) applies.
ISO 273 , Fasteners – Clearance holes for bolts and screws
3 Terms and definitions
For the purposes of this document , the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
IEC Electropedia: available at htt p: //www.e lect ropedia . org
ISO Online browsing platform: available at httP:!IWW w. jso.orgobp
The values specified in have been defined on the basis of bolts in tension at a stress of 290 MPa and a coefficient of friction of 0 , 2 between the mounting interface. All variat ions in these defined parameters lead to variations of the transmittable torque andjor thrust values. See for an explanation on the calculation method. The selection of flange size for a particular application should take account of additional torques andjor thrust that may be generated at the valve stem because of sizing , safety factors , inertia or other similar factors. Specifically , the torque and thrust generated at the maximum output torque andjor thrust of the selected actuator shall be calculated and considered in the select i on of the flange al ong with the ability ofthe va l ve and actuator to withstand such torque and thrust forces.