{"id":69775,"date":"2026-05-17T17:28:06","date_gmt":"2026-05-17T17:28:06","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/mss-sp-68\/"},"modified":"2026-05-19T15:31:08","modified_gmt":"2026-05-19T15:31:08","slug":"mss-sp-68","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/mss-sp-68\/","title":{"rendered":"MSS SP-68"},"content":{"rendered":"<h2>Technical regulation and scope of the MSS SP-68 standard<\/h2>\n<p>This standard establishes strict operational and design requirements for industrial high-pressure butterfly valves. A key feature of valves covered by MSS SP-68 is the offset seat plane relative to the stem centerline (eccentric design), which ensures increased tightness and durability of sealing elements.<\/p>\n<p>EV Group China experts emphasize that the provisions of this document apply to shut-off valves whose pressure and temperature parameters fully comply with ASME B16.34 specifications. The standard details:<\/p>\n<ul>\n<li>Methodology for conducting hydraulic and pneumatic strength and leak tests.<\/li>\n<li>Requirements for the design of body parts and disc assemblies.<\/li>\n<li>Mandatory product marking rules to ensure traceability under operating conditions.<\/li>\n<li>Nomenclature list of sizes and pressure classes.<\/li>\n<\/ul>\n<p>The use of valves compliant with MSS SP-68 is critical for mission-critical pipeline systems where high reliability is required when working with aggressive or high-pressure media.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[113],"class_list":["post-69775","wiki","type-wiki","status-publish","hentry","wiki_category-mss"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69775","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\/69775\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69775"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}