{"id":69700,"date":"2026-05-17T17:27:42","date_gmt":"2026-05-17T17:27:42","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/en-iso-5211\/"},"modified":"2026-05-19T15:30:36","modified_gmt":"2026-05-19T15:30:36","slug":"en-iso-5211","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/en-iso-5211\/","title":{"rendered":"EN ISO 5211"},"content":{"rendered":"<h2>Technical requirements of the EN ISO 5211 standard for industrial valves<\/h2>\n<p>The international specification EN ISO 5211 defines unified requirements for the geometric and operational parameters of connection interfaces between part-turn actuators and industrial valves. Experts at EV Group China emphasize that compliance with these standards is critical for ensuring alignment and reliable torque transmission in automated flow control systems.<\/p>\n<p><strong>Key aspects regulated by this standard:<\/strong><\/p>\n<ul>\n<li>Geometric parameters of flange connections required for mounting the actuator directly onto the valve or via an intermediate support.<\/li>\n<li>Design dimensions of actuator output shafts and the mating elements of the valve assembly.<\/li>\n<li>Standards for maximum torque values for coupling connections and intermediate support structures.<\/li>\n<\/ul>\n<p>It should be noted that the methods for attaching intermediate supports to the valve body are outside the scope of this standard and must be determined by the manufacturer&#8217;s design documentation.<\/p>\n<p><em>Note 1.<\/em> The term &#8220;valve&#8221; in the context of EN ISO 5211 covers both direct mounting and variants using intermediate support elements.<\/p>\n<p><em>Note 2.<\/em> If the actuator system consists of a tandem of a multi-turn actuator and a gearbox, the coupling requirements must comply with the provisions of the international standard EN ISO 5210.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[120],"class_list":["post-69700","wiki","type-wiki","status-publish","hentry","wiki_category-iso"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69700\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69700"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}