{"id":52756,"date":"2026-05-08T01:47:54","date_gmt":"2026-05-08T01:47:54","guid":{"rendered":"https:\/\/zobai.com\/?page_id=52756"},"modified":"2026-05-08T02:10:54","modified_gmt":"2026-05-08T02:10:54","slug":"standards","status":"publish","type":"page","link":"https:\/\/zobai.com\/ar\/standards\/","title":{"rendered":"\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"52756\" class=\"elementor elementor-52756\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5e3b6ec e-con-full e-flex cmsmasters-bg-hide-none cmsmasters-bg-hide-none cmsmasters-block-default e-con e-parent\" data-id=\"5e3b6ec\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-3fc53f9 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"3fc53f9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2dd1326 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-shortcode\" data-id=\"2dd1326\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\"><nav aria-label=\"breadcrumbs\" class=\"rank-math-breadcrumb\"><p><span class=\"last\">Home<\/span><\/p><\/nav><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dcde5fe elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"dcde5fe\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;cmsmasters-fade-in-up&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Safety Valve Standards, Codes &amp; Engineering References<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d9e2173 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"d9e2173\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Review common safety valve and pressure relief standards used in product selection, sizing, installation, testing, flange connection and pressure-temperature evaluation. This page helps buyers understand which standards may apply before requesting a quotation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b6d47c8 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"b6d47c8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-976d256 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"976d256\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/sunhyings.com\/contact-us\/\" target=\"_blank\" rel=\"noopener\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Ask an Engineer<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a46b4c7 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"a46b4c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#Dimensions\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Browse Standards<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3988fb9 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"3988fb9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fa36d3d cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-html\" data-id=\"fa36d3d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t  <style>.zobai-std-hero-card{\r\n      padding:34px;\r\n      border-radius:28px;\r\n      border:1px solid rgba(255,255,255,.14);\r\n      background:rgba(8,47,43,.58);\r\n      backdrop-filter:blur(12px);\r\n      box-shadow:0 28px 80px rgba(0,0,0,.26);\r\n    }\r\n\r\n    .zobai-std-hero-card h2{\r\n      margin:0 0 22px;\r\n      color:#fff;\r\n      font-size:24px;\r\n      line-height:1.25;\r\n      font-weight:850;\r\n    }  <\/style>\r\n          <div class=\"zobai-std-hero-card\">\r\n        <h2>Popular standards resources<\/h2>\r\n        <div class=\"zobai-std-quick-list\">\r\n          <a href=\"\/standards\/api-520\/\">API 520 <span>\u203a<\/span><\/a>\r\n          <a href=\"\/standards\/api-521\/\">API 521 <span>\u203a<\/span><\/a>\r\n          <a href=\"\/standards\/asme-safety-valve-standard\/\">ASME Safety Valve Standard <span>\u203a<\/span><\/a>\r\n          <a href=\"\/standards\/iso-safety-valve-guidance\/\">ISO Safety Valve Guidance <span>\u203a<\/span><\/a>\r\n          <a href=\"\/standards\/pressure-temperature-limits\/\">Pressure Temperature Limits <span>\u203a<\/span><\/a>\r\n        <\/div>\r\n      <\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c413434 e-con-full cmsmasters-effect cmsmasters-effect-type-transform e-flex cmsmasters-effect-hover-type-element cmsmasters-block-default e-con e-child\" data-id=\"c413434\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;position&quot;:&quot;absolute&quot;,&quot;cms_transform_hover_type&quot;:&quot;element&quot;}\">\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bc65c86 e-con-full e-flex cmsmasters-block-default e-con e-parent\" data-id=\"bc65c86\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e90c158 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-html\" data-id=\"e90c158\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<section class=\"zobai-standards-page\">\r\n  <style>\r\n    .zobai-standards-page{\r\n      --zobai-green:#0f5f53;\r\n      --zobai-green-dark:#082f2b;\r\n      --zobai-green-2:#10b98f;\r\n      --zobai-text:#243036;\r\n      --zobai-muted:#64727a;\r\n      --zobai-border:#dfe7e4;\r\n      --zobai-bg:#f6faf8;\r\n      --zobai-light:#eef8f5;\r\n      --zobai-card:#ffffff;\r\n      --zobai-warning:#f59e0b;\r\n      width:100%;\r\n      font-family:Arial, Helvetica, sans-serif;\r\n      color:var(--zobai-text);\r\n      background:#fff;\r\n      line-height:1.65;\r\n    }\r\n\r\n    .zobai-standards-page *{\r\n      box-sizing:border-box;\r\n    }\r\n\r\n    .zobai-std-container{\r\n      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<\/nav>\r\n\r\n  <!-- INTRO -->\r\n  <section class=\"zobai-std-section\">\r\n    <div class=\"zobai-std-container zobai-std-grid-2\">\r\n      <div>\r\n        <span class=\"zobai-std-kicker\">Standards Overview<\/span>\r\n        <h2 class=\"zobai-std-h2\">Safety valve standards help define selection, sizing, testing and installation requirements<\/h2>\r\n        <p class=\"zobai-std-p\">\r\n          Safety valve procurement is not only a product model decision. Buyers may need to confirm applicable standards,\r\n          flange rating, pressure-temperature limits, testing requirements, material requirements and project-specific documentation.\r\n        <\/p>\r\n        <p class=\"zobai-std-p\">\r\n          ZOBAI organizes these standards resources as practical guide pages for engineers, procurement teams,\r\n          equipment manufacturers and contractors. They are designed to support communication before quotation,\r\n          not to replace official standard documents.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-std-warning\">\r\n        <strong>Important:<\/strong> This page provides general standards orientation only. Official standards are copyrighted\r\n        documents and should be purchased or accessed through authorized publishers. Final product selection must follow\r\n        the applicable code, project specification and authorized engineering review.\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- STANDARDS LIBRARY -->\r\n  <section class=\"zobai-std-section zobai-std-bg\" id=\"standards-library\">\r\n    <div class=\"zobai-std-container\">\r\n      <span class=\"zobai-std-kicker\">Standards Library<\/span>\r\n      <h2 class=\"zobai-std-h2\">Safety valve standards and reference pages<\/h2>\r\n      <p class=\"zobai-std-p\">\r\n        Use these pages to understand the role of each standard before sending your safety valve datasheet,\r\n        project specification or quotation request.\r\n      <\/p>\r\n\r\n      <div class=\"zobai-std-grid-3\" style=\"margin-top:32px;\">\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">ASME<\/div>\r\n          <h3 class=\"zobai-std-h3\">ASME Safety Valve Standard<\/h3>\r\n          <p>\r\n            Review ASME-related overpressure protection and safety valve references for pressure equipment,\r\n            boilers, pressure vessels and piping systems.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/asme-safety-valve-standard\/\">Read Guide<\/a>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">DIN<\/div>\r\n          <h3 class=\"zobai-std-h3\">DIN Safety Valve Standard<\/h3>\r\n          <p>\r\n            Understand DIN-related safety valve references for European-style projects, specifications and connection requirements.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/din-safety-valve-standard\/\">Read Guide<\/a>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">GB<\/div>\r\n          <h3 class=\"zobai-std-h3\">GB Safety Valve Standard<\/h3>\r\n          <p>\r\n            Review Chinese GB safety valve and pressure equipment references used in domestic and export-related project communication.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/gb-safety-valve-standard\/\">Read Guide<\/a>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">ISO<\/div>\r\n          <h3 class=\"zobai-std-h3\">ISO Safety Valve Guidance<\/h3>\r\n          <p>\r\n            Explore ISO 4126-related guidance for safety devices used to protect systems against excessive pressure.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/iso-safety-valve-guidance\/\">Read Guide<\/a>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">API<\/div>\r\n          <h3 class=\"zobai-std-h3\">API 520<\/h3>\r\n          <p>\r\n            Review API 520-related sizing, selection and installation references for pressure-relieving devices in refinery and related service.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/api-520\/\">Read Guide<\/a>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">API<\/div>\r\n          <h3 class=\"zobai-std-h3\">API 521<\/h3>\r\n          <p>\r\n            Understand API 521-related guidance for pressure-relieving and depressuring systems in petrochemical, LNG, gas plant and similar facilities.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/api-521\/\">Read Guide<\/a>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">API<\/div>\r\n          <h3 class=\"zobai-std-h3\">API 526<\/h3>\r\n          <p>\r\n            Review API 526-related safety relief valve references for flanged steel pressure relief valves and model selection communication.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/api-526\/\">Read Guide<\/a>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">API<\/div>\r\n          <h3 class=\"zobai-std-h3\">API 527<\/h3>\r\n          <p>\r\n            Understand API 527-related seat tightness testing references for pressure relief valves and inspection discussions.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/api-527\/\">Read Guide<\/a>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">B16.5<\/div>\r\n          <h3 class=\"zobai-std-h3\">ASME B16.5 Flange Size<\/h3>\r\n          <p>\r\n            Review flange size, pressure class and connection references commonly used when specifying safety valve inlet and outlet connections.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/asme-b16-5-flange-size\/\">Read Guide<\/a>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">P\/T<\/div>\r\n          <h3 class=\"zobai-std-h3\">Pressure Temperature Limits<\/h3>\r\n          <p>\r\n            Understand why pressure-temperature ratings, material limits and flange classes must be checked before final valve selection.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/pressure-temperature-limits\/\">Read Guide<\/a>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- API STANDARDS -->\r\n  <section class=\"zobai-std-section\" id=\"api-standards\">\r\n    <div class=\"zobai-std-container zobai-std-grid-2\">\r\n      <div>\r\n        <span class=\"zobai-std-kicker\">API Standards<\/span>\r\n        <h2 class=\"zobai-std-h2\">API references commonly used for pressure relief projects<\/h2>\r\n        <p class=\"zobai-std-p\">\r\n          API standards are frequently used in oil, gas, petrochemical, refinery, LNG and process industry projects.\r\n          For safety valve communication, buyers often mention API 520, API 521, API 526 and API 527.\r\n        <\/p>\r\n        <p class=\"zobai-std-p\">\r\n          These pages should explain the role of each standard in plain language and guide buyers to provide enough\r\n          operating data for sizing, selection, installation or testing discussion.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-std-table-wrap\">\r\n        <table class=\"zobai-std-table\">\r\n          <tbody>\r\n            <tr>\r\n              <th>API 520<\/th>\r\n              <td>Sizing, selection and installation reference for pressure-relieving devices. Use it when discussing relief valve sizing, selection basis and installation considerations.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <th>API 521<\/th>\r\n              <td>Pressure-relieving and depressuring systems guidance. Use it when discussing relieving scenarios, flare systems, depressuring and system-level relief design.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <th>API 526<\/th>\r\n              <td>Commonly associated with flanged steel pressure relief valve references. Use it for model, orifice, flange and conventional API-style PRV discussion.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <th>API 527<\/th>\r\n              <td>Commonly associated with seat tightness testing for pressure relief valves. Use it when leakage or test acceptance is part of procurement review.<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- ASME ISO GB DIN -->\r\n  <section class=\"zobai-std-section zobai-std-bg\" id=\"asme-iso-gb-din\">\r\n    <div class=\"zobai-std-container\">\r\n      <span class=\"zobai-std-kicker\">Regional & International Standards<\/span>\r\n      <h2 class=\"zobai-std-h2\">ASME, ISO, DIN and GB references for safety valve projects<\/h2>\r\n      <p class=\"zobai-std-p\">\r\n        Different projects may specify different standards depending on country, equipment code, end-user requirements\r\n        and industry practice. The correct standard should be confirmed before quotation and production.\r\n      <\/p>\r\n\r\n      <div class=\"zobai-std-grid-4\" style=\"margin-top:32px;\">\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">A<\/div>\r\n          <h3 class=\"zobai-std-h3\">ASME<\/h3>\r\n          <p>\r\n            Often used in international pressure equipment projects involving boilers, pressure vessels,\r\n            piping and overpressure protection requirements.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/asme-safety-valve-standard\/\">ASME Guide<\/a>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">I<\/div>\r\n          <h3 class=\"zobai-std-h3\">ISO<\/h3>\r\n          <p>\r\n            Useful for international safety device terminology and requirements related to protection against excessive pressure.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/iso-safety-valve-guidance\/\">ISO Guide<\/a>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">D<\/div>\r\n          <h3 class=\"zobai-std-h3\">DIN<\/h3>\r\n          <p>\r\n            Often referenced in European-style valve specifications, connection details and customer project documents.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/din-safety-valve-standard\/\">DIN Guide<\/a>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-card\">\r\n          <div class=\"zobai-std-card-icon\">G<\/div>\r\n          <h3 class=\"zobai-std-h3\">GB<\/h3>\r\n          <p>\r\n            Used in Chinese safety valve and pressure equipment projects and can be important for domestic compliance discussions.\r\n          <\/p>\r\n          <a class=\"zobai-std-card-link\" href=\"\/standards\/gb-safety-valve-standard\/\">GB Guide<\/a>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- FLANGE & PRESSURE -->\r\n  <section class=\"zobai-std-section\" id=\"flange-pressure\">\r\n    <div class=\"zobai-std-container zobai-std-grid-2\">\r\n      <div>\r\n        <span class=\"zobai-std-kicker\">Connection & Rating<\/span>\r\n        <h2 class=\"zobai-std-h2\">Flange size and pressure-temperature limits must match the project condition<\/h2>\r\n        <p class=\"zobai-std-p\">\r\n          A safety valve cannot be selected by nominal size alone. The inlet and outlet connection, flange class,\r\n          material group, pressure-temperature rating and gasket requirements should match the actual service condition.\r\n        <\/p>\r\n        <p class=\"zobai-std-p\">\r\n          When requesting a quotation, provide the flange standard, pressure class, sealing face, material requirement\r\n          and operating temperature so the connection can be checked correctly.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-std-checklist\">\r\n        <div class=\"zobai-std-check\">Inlet size and outlet size<\/div>\r\n        <div class=\"zobai-std-check\">Flange standard and pressure class<\/div>\r\n        <div class=\"zobai-std-check\">RF, FF, RTJ or other sealing face<\/div>\r\n        <div class=\"zobai-std-check\">Material and temperature condition<\/div>\r\n        <div class=\"zobai-std-check\">Pressure-temperature rating check<\/div>\r\n        <div class=\"zobai-std-check\">Gasket and bolting requirements<\/div>\r\n        <div class=\"zobai-std-check\">Connection drawing or datasheet<\/div>\r\n        <div class=\"zobai-std-check\">Applicable project standard<\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- HOW TO USE -->\r\n  <section class=\"zobai-std-section zobai-std-bg\" id=\"how-to-use\">\r\n    <div class=\"zobai-std-container zobai-std-grid-2\">\r\n      <div>\r\n        <span class=\"zobai-std-kicker\">How to Use This Page<\/span>\r\n        <h2 class=\"zobai-std-h2\">Use standards pages to prepare a better safety valve inquiry<\/h2>\r\n        <p class=\"zobai-std-p\">\r\n          Standards pages help buyers understand which information is needed before contacting a manufacturer.\r\n          They should be used together with the product datasheet, engineering specification and actual working conditions.\r\n        <\/p>\r\n\r\n        <div class=\"zobai-std-list\">\r\n          <a href=\"\/engineering\/safety-valve-selection-guide\/\">Start with Safety Valve Selection Guide<\/a>\r\n          <a href=\"\/engineering\/safety-valve-sizing\/\">Review Safety Valve Sizing Information<\/a>\r\n          <a href=\"\/engineering\/back-pressure-and-bellows\/\">Check Back Pressure and Bellows Requirements<\/a>\r\n          <a href=\"\/engineering\/safety-valve-installation\/\">Review Installation Guide<\/a>\r\n          <a href=\"\/ask-an-engineer\/\">Ask an Engineer<\/a>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-std-table-wrap\">\r\n        <table class=\"zobai-std-table\">\r\n          <tbody>\r\n            <tr>\r\n              <th>Early Design<\/th>\r\n              <td>Use the standards overview to identify the likely code family and information required for safety valve discussion.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <th>Quotation<\/th>\r\n              <td>Provide medium, pressure, temperature, size, connection, material, capacity and required standard.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <th>Engineering Review<\/th>\r\n              <td>Confirm sizing basis, back pressure, installation layout, material compatibility and testing requirements.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <th>Procurement<\/th>\r\n              <td>Confirm drawings, certificates, test reports, markings, documents and shipping requirements before order release.<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- REQUEST INFO -->\r\n  <section class=\"zobai-std-section\">\r\n    <div class=\"zobai-std-container zobai-std-grid-2\">\r\n      <div>\r\n        <span class=\"zobai-std-kicker\">Before Quotation<\/span>\r\n        <h2 class=\"zobai-std-h2\">Information needed when a project specifies API, ASME, ISO, DIN or GB<\/h2>\r\n        <p class=\"zobai-std-p\">\r\n          If your project has a standard requirement, send the specification together with the working conditions.\r\n          This helps ZOBAI review whether the product series, material, connection and documentation can match the project.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-std-checklist\">\r\n        <div class=\"zobai-std-check\">Applicable standard or project code<\/div>\r\n        <div class=\"zobai-std-check\">Working medium and service condition<\/div>\r\n        <div class=\"zobai-std-check\">Set pressure and operating pressure<\/div>\r\n        <div class=\"zobai-std-check\">Operating temperature and material requirement<\/div>\r\n        <div class=\"zobai-std-check\">Required capacity or sizing basis<\/div>\r\n        <div class=\"zobai-std-check\">Inlet and outlet connection standard<\/div>\r\n        <div class=\"zobai-std-check\">Testing and inspection requirements<\/div>\r\n        <div class=\"zobai-std-check\">Certificate and documentation requirements<\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- FAQ -->\r\n  <section class=\"zobai-std-section zobai-std-bg\" id=\"faq\">\r\n    <div class=\"zobai-std-container\">\r\n      <span class=\"zobai-std-kicker\">FAQ<\/span>\r\n      <h2 class=\"zobai-std-h2\">Common questions about safety valve standards<\/h2>\r\n\r\n      <div class=\"zobai-std-faq\">\r\n        <div class=\"zobai-std-faq-item\">\r\n          <h3>Does ZOBAI publish the full text of API, ASME, ISO, DIN or GB standards?<\/h3>\r\n          <p>\r\n            No. Official standards are copyrighted documents. ZOBAI provides practical overview pages to help buyers understand standard-related project communication.\r\n          <\/p>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-faq-item\">\r\n          <h3>Which standard should I use for my safety valve project?<\/h3>\r\n          <p>\r\n            It depends on the project country, equipment code, end-user specification, industry, pressure system and procurement requirement. Send your project specification for review.\r\n          <\/p>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-faq-item\">\r\n          <h3>Can ZOBAI help if my project specifies API 520 or API 521?<\/h3>\r\n          <p>\r\n            Yes. Send your working conditions, sizing basis, datasheet, system information and required documentation so ZOBAI can review the next step.\r\n          <\/p>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-faq-item\">\r\n          <h3>Are flange standards important for safety valve selection?<\/h3>\r\n          <p>\r\n            Yes. Inlet and outlet connection, flange class, facing type, gasket and pressure-temperature rating should be checked before quotation and production.\r\n          <\/p>\r\n        <\/div>\r\n\r\n        <div class=\"zobai-std-faq-item\">\r\n          <h3>Can I request certificates or standard-related documents?<\/h3>\r\n          <p>\r\n            Yes. Buyers can request available certificates, test reports, material documents or project-related documents according to order and product requirements.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- FINAL CTA -->\r\n  <section class=\"zobai-std-final\">\r\n    <div class=\"zobai-std-container zobai-std-final-inner\">\r\n      <div>\r\n        <h2>Need help matching a safety valve to your project standard?<\/h2>\r\n        <p>\r\n          Send your working conditions, datasheet, required standard and project specification.\r\n          ZOBAI will review your request and respond with the appropriate recommendation or quotation.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <a class=\"zobai-std-btn zobai-std-btn-primary\" href=\"\/ask-an-engineer\/\">Ask an Engineer<\/a>\r\n    <\/div>\r\n  <\/section>\r\n\r\n<\/section>\r\n\r\n<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@graph\": 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This page helps buyers understand which standards may apply before requesting a quotation. Ask an Engineer Browse Standards Popular standards resources API 520 \u203a API 521 \u203a ASME&#8230;<\/p>","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-52756","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/zobai.com\/ar\/wp-json\/wp\/v2\/pages\/52756","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zobai.com\/ar\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/zobai.com\/ar\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/zobai.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zobai.com\/ar\/wp-json\/wp\/v2\/comments?post=52756"}],"version-history":[{"count":13,"href":"https:\/\/zobai.com\/ar\/wp-json\/wp\/v2\/pages\/52756\/revisions"}],"predecessor-version":[{"id":52771,"href":"https:\/\/zobai.com\/ar\/wp-json\/wp\/v2\/pages\/52756\/revisions\/52771"}],"wp:attachment":[{"href":"https:\/\/zobai.com\/ar\/wp-json\/wp\/v2\/media?parent=52756"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}