{"id":1493,"date":"2026-04-10T02:34:37","date_gmt":"2026-04-10T09:34:37","guid":{"rendered":"https:\/\/www.songhaiflanges.com\/?p=1493"},"modified":"2026-04-10T02:36:27","modified_gmt":"2026-04-10T09:36:27","slug":"orifice-flanges-explained-flow-measurement-and-asme-b16-36","status":"publish","type":"post","link":"https:\/\/www.songhaiflanges.com\/ms\/orifice-flanges-explained-flow-measurement-and-asme-b16-36\/","title":{"rendered":"Orifice Flanges Explained: Flow Measurement and ASME B16.36"},"content":{"rendered":"<h2>Orifice Flanges Explained: Complete Guide to Flow Measurement<\/h2>\n<p><strong>Published:<\/strong> April 10, 2026 | <strong>Category:<\/strong> Technical Guide<\/p>\n<h3>Introduction<\/h3>\n<p>If you&#8217;ve ever needed to measure flow in a pressurized piping system, chances are someone pointed you toward an <strong>orifice flange<\/strong>. These flanges are purpose-built for flow measurement, giving you clean access to differential pressure readings.<\/p>\n<h3>How an Orifice Flange Works<\/h3>\n<p>An orifice flange has <strong>tapped holes (pressure taps)<\/strong> drilled radially through the base, positioned on either side of a thin orifice plate. The orifice plate restricts flow, creating a measurable pressure differential that lets instrumentation calculate flow rate using <strong>Bernoulli&#8217;s equation<\/strong>.<\/p>\n<h3>Governing Standards<\/h3>\n<ul>\n<li><strong>ASME B16.36<\/strong> &#8211; Orifice Flanges<\/li>\n<li><strong>API 2530 \/ AGA Report No. 3<\/strong> &#8211; Flow measurement<\/li>\n<li><strong>ISO 5167<\/strong> &#8211; International standard<\/li>\n<\/ul>\n<h3>Types of Orifice Flange Assemblies<\/h3>\n<p><strong>Weld Neck (Most Common):<\/strong> Two flanges welded into pipeline with jack screws for plate removal.<\/p>\n<p><strong>Slip-On\/Threaded:<\/strong> For lower-pressure applications (Class 150-300).<\/p>\n<h3>Pressure Tapping Locations<\/h3>\n<ul>\n<li><strong>Flange Taps:<\/strong> 1 inch from plate face (ASME B16.36, North America)<\/li>\n<li><strong>Corner Taps:<\/strong> Adjacent to plate (ISO 5167, European)<\/li>\n<li><strong>D and D\/2 Taps:<\/strong> Pipe taps for special applications<\/li>\n<\/ul>\n<h3>Specifications<\/h3>\n<ul>\n<li>Size Range: 1&#8243; to 24&#8243;<\/li>\n<li>Pressure Classes: 300# to 2500# (no 150#)<\/li>\n<li>Materials: A105, F304\/L, F316\/L, LF2<\/li>\n<li>Tap Size: 1\/2&#8243;, 3\/4&#8243;, or 1&#8243; NPT<\/li>\n<li>Key Feature: Jack screws for plate removal<\/li>\n<\/ul>\n<h3>When to Specify Orifice Flanges<\/h3>\n<ul>\n<li>Custody transfer metering in oil\/gas<\/li>\n<li>Refinery process control<\/li>\n<li>Boiler feedwater measurement<\/li>\n<li>Water\/wastewater treatment<\/li>\n<\/ul>\n<h3>Common Mistakes to Avoid<\/h3>\n<ol>\n<li>Wrong tap orientation (horizontal for liquids, top for gas)<\/li>\n<li>Forgetting jack screws<\/li>\n<li>Wrong tap size<\/li>\n<li>Incorrect beta ratio (should be 0.3-0.7)<\/li>\n<\/ol>\n<p><strong>Need orifice flanges?<\/strong> Contact Songhai for ASME B16.36 compliant products.<\/p>\n<p><strong>WhatsApp:<\/strong>\u00a0+86-18658777855<\/p>\n<p><strong>Email:<\/strong>\u00a01007788887@qq.com<\/p>\n<p><a href=\"https:\/\/www.720yun.com\/vr\/a6ajt7ynrw0\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1480\" src=\"http:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1.webp\" alt=\"\" width=\"1290\" height=\"2317\" srcset=\"https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1.webp 1290w, https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1-167x300.webp 167w, https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1-570x1024.webp 570w, https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1-768x1379.webp 768w, https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1-855x1536.webp 855w, https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1-1140x2048.webp 1140w, https:\/\/www.songhaiflanges.com\/wp-content\/uploads\/2026\/04\/4-1-7x12.webp 7w\" sizes=\"auto, (max-width: 1290px) 100vw, 1290px\" \/><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Orifice Flanges Explained: Complete Guide to Flow Measurement Published: April 10, 2026 | Category: Technical Guide Introduction If you&#8217;ve ever needed to measure&#8230;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[1],"tags":[120,119,118,117],"class_list":["post-1493","post","type-post","status-publish","format-standard","hentry","category-3-news","tag-api-2530","tag-asme-b16-36","tag-flow-measurement","tag-orifice-flanges"],"_links":{"self":[{"href":"https:\/\/www.songhaiflanges.com\/ms\/wp-json\/wp\/v2\/posts\/1493","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflanges.com\/ms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflanges.com\/ms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflanges.com\/ms\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflanges.com\/ms\/wp-json\/wp\/v2\/comments?post=1493"}],"version-history":[{"count":2,"href":"https:\/\/www.songhaiflanges.com\/ms\/wp-json\/wp\/v2\/posts\/1493\/revisions"}],"predecessor-version":[{"id":1503,"href":"https:\/\/www.songhaiflanges.com\/ms\/wp-json\/wp\/v2\/posts\/1493\/revisions\/1503"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflanges.com\/ms\/wp-json\/wp\/v2\/media?parent=1493"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflanges.com\/ms\/wp-json\/wp\/v2\/categories?post=1493"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflanges.com\/ms\/wp-json\/wp\/v2\/tags?post=1493"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}