{"id":5457,"date":"2026-07-30T00:44:54","date_gmt":"2026-07-29T16:44:54","guid":{"rendered":"https:\/\/www.sj-gauge.com\/?p=5457"},"modified":"2026-07-30T00:44:55","modified_gmt":"2026-07-29T16:44:55","slug":"ansi-flange-standard","status":"publish","type":"post","link":"https:\/\/www.sj-gauge.com\/id\/ansi-flange-standard\/","title":{"rendered":"Standar Flensa ANSI\/ASME: Apa Arti Class 150?"},"content":{"rendered":"<p><strong>Ringkasan:<\/strong> Saat ini \u201cflensa ANSI\u201d biasanya ditentukan dengan standar ASME, ukuran pipa nominal, kelas tekanan, material, permukaan, dan pola dimensi. Class 150 adalah penunjukan kelas tekanan, bukan batas kerja universal 150 psi.<\/p>\n\n\n\n<p>Industri masih sering menyebut \u201cflensa ANSI\u201d, tetapi ASME B16.5 adalah standar utama untuk flensa pipa dan fitting berflensa NPS 1\/2 hingga NPS 24. Flensa baja diameter besar dicakup ASME B16.47. Selalu pastikan standar, edisi, kelompok material, dan spesifikasi proyek yang tepat.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Daftar Isi<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Beralih Daftar Isi\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Beralih<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #7b1e1c;color:#7b1e1c\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #7b1e1c;color:#7b1e1c\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.sj-gauge.com\/id\/ansi-flange-standard\/#what-does-ansi-class-150-mean\" >Apa Arti ANSI Class 150?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.sj-gauge.com\/id\/ansi-flange-standard\/#how-to-read-an-asme-flange-specification\" >Cara Membaca Spesifikasi Flensa ASME<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.sj-gauge.com\/id\/ansi-flange-standard\/#common-asme-pressure-classes\" >Kelas Tekanan ASME yang Umum<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.sj-gauge.com\/id\/ansi-flange-standard\/#common-flange-facings-rf-ff-and-rtj\" >Permukaan Flensa Umum: RF, FF, dan RTJ<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.sj-gauge.com\/id\/ansi-flange-standard\/#asme-flanges-for-pressure-gauges-and-diaphragm-seals\" >Flensa ASME untuk Manometer dan Segel Diafragma<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.sj-gauge.com\/id\/ansi-flange-standard\/#asme-jis-and-dinen-flanges-are-not-automatically-interchangeable\" >Flensa ASME, JIS, dan DIN\/EN Tidak Otomatis Dapat Dipertukarkan<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.sj-gauge.com\/id\/ansi-flange-standard\/#asme-flange-selection-checklist\" >Daftar Periksa Pemilihan Flensa ASME<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.sj-gauge.com\/id\/ansi-flange-standard\/#frequently-asked-questions\" >Pertanyaan yang Sering Diajukan<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.sj-gauge.com\/id\/ansi-flange-standard\/#conclusion\" >Kesimpulan<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"h-what-does-ansi-class-150-mean\"><span class=\"ez-toc-section\" id=\"what-does-ansi-class-150-mean\"><\/span>Apa Arti ANSI Class 150?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Class 150 menunjukkan satu kelas tekanan ASME. Bukan berarti setiap flensa Class 150 terbatas tepat 150 psi. Tekanan izin berubah menurut kelompok material dan temperatur berdasarkan tabel rating tekanan\u2013temperatur standar yang berlaku.<\/p>\n\n\n\n<p>Tanda \u201cASME B16.5 NPS 2 Class 150 RF\u201d menunjukkan standar, ukuran nominal 2 inci, Class 150, dan sambungan raised face. Grade material dan tanda lain tetap diperlukan untuk menentukan spesifikasi lengkap.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-read-an-asme-flange-specification\"><span class=\"ez-toc-section\" id=\"how-to-read-an-asme-flange-specification\"><\/span>Cara Membaca Spesifikasi Flensa ASME<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Standar:<\/strong> pastikan ASME B16.5, ASME B16.47, atau dokumen dan edisi yang ditentukan.<\/li>\n\n\n\n<li><strong>Ukuran:<\/strong> identifikasi NPS dan referensi DN pada gambar.<\/li>\n\n\n\n<li><strong>Kelas tekanan:<\/strong> identifikasi Class 150, 300, 400, 600, 900, 1500, atau 2500 sesuai spesifikasi.<\/li>\n\n\n\n<li><strong>Permukaan flensa:<\/strong> pastikan RF, FF, RTJ, atau permukaan lain yang diwajibkan.<\/li>\n\n\n\n<li><strong>Material:<\/strong> periksa spesifikasi material, grade, dan kelompok tekanan\u2013temperatur.<\/li>\n\n\n\n<li><strong>Dimensi:<\/strong> periksa diameter luar, lingkar baut, lubang baut, ketebalan, diameter dalam, dan jenis flensa.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-common-asme-pressure-classes\"><span class=\"ez-toc-section\" id=\"common-asme-pressure-classes\"><\/span>Kelas Tekanan ASME yang Umum<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div style=\"overflow-x:auto\"><table style=\"width:100%;border-collapse:collapse;min-width:620px\"><thead><tr><th>Kelas tekanan<\/th><th>Cara menafsirkannya<\/th><th>Catatan pemilihan<\/th><\/tr><\/thead><tbody><tr><td>Class 150<\/td><td>Kelas industri umum<\/td><td>Bukan batas universal 150 psi.<\/td><\/tr><tr><td>Class 300 \/ 600<\/td><td>Seri kelas tekanan lebih tinggi<\/td><td>Dimensi dan rating tekanan\u2013temperatur berbeda dari Class 150.<\/td><\/tr><tr><td>Class 900 \/ 1500 \/ 2500<\/td><td>Seri tekanan tinggi<\/td><td>Memerlukan verifikasi tepat atas material, temperatur, bolting, dan desain.<\/td><\/tr><\/tbody><\/table><\/div>\n\n\n\n<p>Tabel ini hanya menjelaskan nama kelas, bukan tabel rating tekanan. Gunakan tabel tekanan\u2013temperatur ASME resmi dan dasar desain proyek untuk pemilihan akhir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-common-flange-facings-rf-ff-and-rtj\"><span class=\"ez-toc-section\" id=\"common-flange-facings-rf-ff-and-rtj\"><\/span>Permukaan Flensa Umum: RF, FF, dan RTJ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>RF \u2014 Raised Face:<\/strong> area kontak gasket yang menonjol dan umum pada perpipaan industri.<\/li>\n\n\n\n<li><strong>FF \u2014 Flat Face:<\/strong> permukaan kontak datar penuh, sering dipilih untuk sambungan besi cor atau tegangan rendah tertentu.<\/li>\n\n\n\n<li><strong>RTJ \u2014 Ring-Type Joint:<\/strong> alur mesin untuk gasket cincin logam, umumnya digunakan pada layanan tekanan atau temperatur tinggi yang berat.<\/li>\n<\/ul>\n\n\n\n<p>Pemilihan permukaan harus cocok dengan flensa pasangan dan desain gasket. Jangan membaut permukaan yang tidak kompatibel tanpa desain rekayasa yang disetujui.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-asme-flanges-for-pressure-gauges-and-diaphragm-seals\"><span class=\"ez-toc-section\" id=\"asme-flanges-for-pressure-gauges-and-diaphragm-seals\"><\/span>Flensa ASME untuk Manometer dan Segel Diafragma<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Untuk manometer atau transmitter berflensa, kelas flensa hanya salah satu bagian pemilihan. Pastikan rentang ukur, diameter efektif diafragma, cairan pengisi, material terbasahi, temperatur proses, panjang kapiler, sambungan pembilasan, dan orientasi pemasangan.<\/p>\n\n\n\n<p>Pengukuran tekanan rendah sering memerlukan area diafragma lebih besar. Media korosif, kental, mengkristal, atau saniter mungkin membutuhkan paduan, pelapisan, lining, atau desain diafragma extended khusus.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-asme-jis-and-din-en-flanges-are-not-automatically-interchangeable\"><span class=\"ez-toc-section\" id=\"asme-jis-and-dinen-flanges-are-not-automatically-interchangeable\"><\/span>Flensa ASME, JIS, dan DIN\/EN Tidak Otomatis Dapat Dipertukarkan<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>ASME memakai kelas tekanan, JIS umumnya kelas K, dan DIN\/EN penunjukan PN. Ukuran nominal serupa tidak menjamin diameter luar, pola baut, permukaan, atau rating tekanan\u2013temperatur sama. Bandingkan gambar yang disetujui sebelum memakai adaptor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-asme-flange-selection-checklist\"><span class=\"ez-toc-section\" id=\"asme-flange-selection-checklist\"><\/span>Daftar Periksa Pemilihan Flensa ASME<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Standar, edisi, dan jenis flensa yang tepat<\/li>\n\n\n\n<li>Referensi NPS atau DN dan kelas tekanan<\/li>\n\n\n\n<li>Desain permukaan dan gasket<\/li>\n\n\n\n<li>Grade material dan kompatibilitas korosi<\/li>\n\n\n\n<li>Tekanan desain, temperatur desain, dan lonjakan tekanan<\/li>\n\n\n\n<li>Pola baut, material bolting, dan gambar yang disetujui<\/li>\n\n\n\n<li>Rentang instrumen, ukuran diafragma, dan susunan pemasangan<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\"><span class=\"ez-toc-section\" id=\"frequently-asked-questions\"><\/span>Pertanyaan yang Sering Diajukan<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-does-ansi-class-150-mean-150-psi\">Apakah ANSI Class 150 berarti 150 psi?<\/h3>\n\n\n\n<p>Tidak. Class 150 adalah penunjukan kelas. Tekanan izin bergantung pada material dan temperatur. Gunakan tabel tekanan\u2013temperatur ASME yang berlaku.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-are-ansi-and-asme-flange-standards-the-same\">Apakah standar flensa ANSI dan ASME sama?<\/h3>\n\n\n\n<p>\u201cFlensa ANSI\u201d masih istilah pasar yang umum, tetapi persyaratan saat ini biasanya merujuk standar ASME seperti B16.5 dan B16.47. Pastikan dokumen tepat pada spesifikasi proyek.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-can-a-class-150-flange-connect-directly-to-a-jis-10k-flange\">Dapatkah flensa Class 150 langsung dihubungkan ke flensa JIS 10K?<\/h3>\n\n\n\n<p>Jangan menganggapnya dapat langsung disambungkan. Dimensi, pola baut, permukaan, dan rating dapat berbeda. Bandingkan gambar yang disetujui dan gunakan adaptor yang dirancang tepat bila diperlukan.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\"><span class=\"ez-toc-section\" id=\"conclusion\"><\/span>Kesimpulan<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Untuk menentukan flensa ANSI\/ASME dengan benar, identifikasi standar, ukuran, kelas tekanan, permukaan, material, dan kondisi layanan secara lengkap. SJ Gauge dapat meninjau gambar dan merekomendasikan manometer, segel diafragma, atau remote seal yang sesuai.<\/p>\n\n\n\n<p><strong>Perlu bantuan memeriksa flensa ASME atau memilih instrumen?<\/strong> <a href=\"https:\/\/www.sj-gauge.com\/id\/contact-us\/\">Hubungi SJ Gauge<\/a> dengan menyertakan penandaan flensa, gambar, fluida proses, tekanan, dan temperatur.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-standards-reference\">Referensi standar<\/h3>\n\n\n\n<p>Gunakan edisi terkini dari <a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b16-5-pipe-flanges-flanged-fittings-nps-1-2-nps-24-metric-inch-standard\" target=\"_blank\" rel=\"noopener\">ASME B16.5<\/a> dan <a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b16-47-large-diameter-steel-flanges-nps-26-nps-60-metric-inch-standard\" target=\"_blank\" rel=\"noopener\">ASME B16.47<\/a>, serta spesifikasi proyek. Beli standar resmi bila membutuhkan persyaratan lengkap atau tabel rating.<\/p>","protected":false},"excerpt":{"rendered":"<p>Summary: An \u201cANSI flange\u201d is usually specified today by an ASME standard, nominal pipe size, pressure class, material, facing and dimensional pattern. Class 150 is a pressure-class designation\u2014not a universal 150 psi working-pressure limit. Industry still commonly says \u201cANSI flange,\u201d but ASME B16.5 is the principal standard for pipe flanges and flanged fittings from NPS [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":4245,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[],"class_list":["post-5457","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>ANSI\/ASME Flange Standards Explained: What Class 150 Means - SJ Gauge | Pressure Gauges, Thermometers &amp; Pressure Sensors<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sj-gauge.com\/id\/ansi-flange-standard\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ANSI\/ASME Flange Standards Explained: What Class 150 Means\" \/>\n<meta property=\"og:description\" content=\"Summary: An \u201cANSI flange\u201d is usually specified today by an ASME standard, nominal pipe size, pressure class, material, facing and dimensional pattern. Class 150 is a pressure-class designation\u2014not a universal 150 psi working-pressure limit. Industry still commonly says \u201cANSI flange,\u201d but ASME B16.5 is the principal standard for pipe flanges and flanged fittings from NPS [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.sj-gauge.com\/id\/ansi-flange-standard\/\" \/>\n<meta property=\"og:site_name\" content=\"SJ Gauge | Pressure Gauges, Thermometers &amp; Pressure Sensors\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-29T16:44:54+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-29T16:44:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2025\/05\/05-1_SJ_bottom_mount_with_flange_pressure_gauge_EN.png\" \/>\n\t<meta property=\"og:image:width\" content=\"200\" \/>\n\t<meta property=\"og:image:height\" content=\"200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"SJ Gauge\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Ditulis oleh\" \/>\n\t<meta name=\"twitter:data1\" content=\"SJ Gauge\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimasi waktu membaca\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 menit\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/ansi-flange-standard\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/ansi-flange-standard\\\/\"},\"author\":{\"name\":\"SJ Gauge\",\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/#\\\/schema\\\/person\\\/cbc9e642e49a53b18b3eb832486bd52c\"},\"headline\":\"ANSI\\\/ASME Flange Standards Explained: What Class 150 Means\",\"datePublished\":\"2026-07-29T16:44:54+00:00\",\"dateModified\":\"2026-07-29T16:44:55+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/ansi-flange-standard\\\/\"},\"wordCount\":733,\"publisher\":{\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/ansi-flange-standard\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.sj-gauge.com\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/05-1_SJ_bottom_mount_with_flange_pressure_gauge_EN.png\",\"articleSection\":[\"Knowledge\"],\"inLanguage\":\"id\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/ansi-flange-standard\\\/\",\"url\":\"https:\\\/\\\/www.sj-gauge.com\\\/ansi-flange-standard\\\/\",\"name\":\"ANSI\\\/ASME Flange Standards Explained: What Class 150 Means - SJ Gauge | Pressure Gauges, Thermometers &amp; Pressure Sensors\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/ansi-flange-standard\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/ansi-flange-standard\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.sj-gauge.com\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/05-1_SJ_bottom_mount_with_flange_pressure_gauge_EN.png\",\"datePublished\":\"2026-07-29T16:44:54+00:00\",\"dateModified\":\"2026-07-29T16:44:55+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/ansi-flange-standard\\\/#breadcrumb\"},\"inLanguage\":\"id\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.sj-gauge.com\\\/ansi-flange-standard\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"id\",\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/ansi-flange-standard\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.sj-gauge.com\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/05-1_SJ_bottom_mount_with_flange_pressure_gauge_EN.png\",\"contentUrl\":\"https:\\\/\\\/www.sj-gauge.com\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/05-1_SJ_bottom_mount_with_flange_pressure_gauge_EN.png\",\"width\":200,\"height\":200,\"caption\":\"Bottom-mount pressure gauge with flange installation diagram.\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/ansi-flange-standard\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.sj-gauge.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"ANSI\\\/ASME Flange Standards Explained: What Class 150 Means\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/#website\",\"url\":\"https:\\\/\\\/www.sj-gauge.com\\\/\",\"name\":\"SJ Gauge | Pressure Gauges, Thermometers &amp; Pressure Sensors\",\"description\":\"Manufacturer of industrial pressure gauges, pressure sensors, and transmitters. 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Class 150 is a pressure-class designation\u2014not a universal 150 psi working-pressure limit. 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