{"id":1229,"date":"2022-08-08T16:02:06","date_gmt":"2022-08-08T08:02:06","guid":{"rendered":"https:\/\/limegreen-okapi-448594.hostingersite.com\/?page_id=1229"},"modified":"2026-07-27T15:48:24","modified_gmt":"2026-07-27T07:48:24","slug":"sulfur-resistance-working-condition","status":"publish","type":"page","link":"https:\/\/raymonvalve.com\/fr\/sulfur-resistance-working-condition\/","title":{"rendered":"Solutions de vannes pour services s\u00e9v\u00e8res et H2S"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1229\" class=\"elementor elementor-1229\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e24df534 e-con-full e-flex e-con e-parent\" data-id=\"e24df534\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-eea818da elementor-widget elementor-widget-html\" data-id=\"eea818da\" data-element_type=\"widget\" data-e-type=\"widget\" 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rgba(11,23,49,.13)}.rv-state{display:inline-block;margin-top:14px;font-size:11px;font-weight:800;color:#1f29bd}.rv-factorgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:32px}.rv-factor{padding:22px;border:1px solid var(--rv-line);border-radius:12px;background:#fff}.rv-factor b{display:block;color:var(--rv-blue);margin-bottom:8px}.rv-factor p{margin:0;color:#667085;font-size:14px}.rv-limitgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:30px}.rv-limit{padding:24px;border-radius:12px;background:#fff;color:#26344d}.rv-limit h3{margin:0 0 10px;color:#1f29bd;font-size:19px}.rv-limit p{margin:0;font-size:14px}.rv-trust{padding:26px;border:1px solid var(--rv-line);border-left:5px solid var(--rv-blue);border-radius:10px;background:#f8faff}.rv-trustgrid{display:grid;grid-template-columns:1fr 1fr;gap:18px 30px}.rv-trust b{display:block;color:var(--rv-ink);margin-bottom:5px}.rv-trust p{margin:0;color:#667085;font-size:14px}.rv-trustlinks{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.rv-trustlinks a{color:var(--rv-blue);font-size:13px;font-weight:800}body.page-id-1229 #content,body.page-id-1229 .site-content,body.page-id-1229 #primary,body.page-id-1229 #main,body.page-id-1229 .entry-content{margin-top:0!important;padding-top:0!important}body.page-id-1229 .site-content>.ast-container{max-width:100%!important;padding-left:0!important;padding-right:0!important}@media(max-width:980px){.rv-factorgrid,.rv-limitgrid{grid-template-columns:1fr 1fr}}@media(max-width:640px){.rv-factorgrid,.rv-limitgrid,.rv-trustgrid{grid-template-columns:1fr}}<\/style><main class=\"rv-cat\">\n<section class=\"rv-hero\"><div class=\"rv-wrap\"><div class=\"rv-crumb\"><a href=\"\/\">Home<\/a> \/ <a href=\"\/service\/\">Solutions<\/a> \/ Sour-Service and H2S Valve Solutions<\/div><div class=\"rv-kicker\" style=\"color:#f3cc18\">Environment, hardness and fabrication control<\/div><h1 class=\"rv-title\">Valve Material Review for Sour Service and H\u2082S Environments<\/h1><p>Sour-service valve review requires more than specifying a familiar alloy or adding a NACE note. The actual H\u2082S-containing environment, water phase, pressure, temperature, pH, chlorides, elemental sulfur, material condition, hardness, cold work, welding and heat treatment determine which cracking and corrosion risks must be controlled.<\/p><div class=\"rv-actions\"><a class=\"rv-btn rv-primary\" href=\"\/contact\/\">Request Condition Review<\/a><a class=\"rv-btn rv-ghost\" href=\"#decision-inputs\">Review Engineering Inputs<\/a><\/div><div class=\"rv-pills\"><span class=\"rv-pill\">H\u2082S environment definition<\/span><span class=\"rv-pill\">Material and hardness<\/span><span class=\"rv-pill\">Welding and heat treatment<\/span><span class=\"rv-pill\">Traceable compliance evidence<\/span><\/div><\/div><\/section>\n<section id=\"decision-inputs\" class=\"rv-section\"><div class=\"rv-wrap\"><div class=\"rv-kicker\">Decision inputs<\/div><h2 class=\"rv-h2\">Data that changes the valve design route<\/h2><p class=\"rv-lead\">The dominant working condition must be translated into tag-level inputs before construction, materials or operation are approved.<\/p><div class=\"rv-factorgrid\"><div class=\"rv-factor\"><b>Environment<\/b><p>H\u2082S, CO\u2082, water phase, pH, chlorides, sulfur and contaminants.<\/p><\/div><div class=\"rv-factor\"><b>Partial pressures<\/b><p>Gas composition, total pressure and credible operating\/upset cases.<\/p><\/div><div class=\"rv-factor\"><b>Material condition<\/b><p>Grade, heat treatment, hardness, cold work and microstructure.<\/p><\/div><div class=\"rv-factor\"><b>Fabrication<\/b><p>Welding procedure, heat-affected zone, PWHT and repair controls.<\/p><\/div><div class=\"rv-factor\"><b>Valve details<\/b><p>Stem, trim, springs, fasteners, seats, packing and pressure boundary.<\/p><\/div><div class=\"rv-factor\"><b>Evidence<\/b><p>Certificates, hardness maps, PMI, welding records and traceability.<\/p><\/div><\/div><\/div><\/section>\n<section class=\"rv-section rv-dark\"><div class=\"rv-wrap\"><div class=\"rv-kicker\" style=\"color:#f3cc18\">Failure-mode review<\/div><h2 class=\"rv-h2\">Symptoms, mechanisms and engineering responses<\/h2><p class=\"rv-lead\">Use observed symptoms to investigate causes; do not treat the table as a substitute for inspection or root-cause analysis.<\/p><div class=\"rv-tablewrap\"><table class=\"rv-table\"><thead><tr><th>Failure mode<\/th><th>Typical evidence<\/th><th>Possible mechanism<\/th><th>Engineering response<\/th><\/tr><\/thead><tbody><tr><td>Sulfide stress cracking<\/td><td>Sudden cracking of a stressed susceptible component<\/td><td>H2S environment plus tensile stress and unsuitable material\/hardness<\/td><td>Apply the governing sour-service material limits and control stress\/hardness<\/td><\/tr><tr><td>Hydrogen-induced damage<\/td><td>Blistering or cracking in susceptible steel<\/td><td>Hydrogen entry and vulnerable material condition<\/td><td>Review environmental severity, steel quality and project HIC\/SOHIC requirements<\/td><\/tr><tr><td>Localized corrosion<\/td><td>Pits or attack at stagnant and deposit areas<\/td><td>Water chemistry, chlorides, deposits and local electrochemistry<\/td><td>Treat corrosion resistance separately from cracking compliance<\/td><\/tr><tr><td>Weld hardness exceedance<\/td><td>Nonconforming hardness near weld or repair<\/td><td>Procedure, heat input, filler, cold work or PWHT control<\/td><td>Qualify welding, define hardness survey and retain repair records<\/td><\/tr><tr><td>Stem\/fastener mismatch<\/td><td>Small components fail despite compliant body<\/td><td>Material scope omitted for trim, bolting, springs or pins<\/td><td>Create a complete exposed-component material and hardness map<\/td><\/tr><tr><td>Untraceable compliance<\/td><td>Cannot link certificate or hardness result to the valve<\/td><td>Incomplete heat\/component\/tag traceability<\/td><td>Define document index and identification from material receipt to final dossier<\/td><\/tr><\/tbody><\/table><\/div><\/div><\/section>\n<section class=\"rv-section\"><div class=\"rv-wrap\"><div class=\"rv-kicker\">Product routes<\/div><h2 class=\"rv-h2\">Valve families to evaluate for this condition<\/h2><p class=\"rv-lead\">Product family is one decision layer. The final construction must still close the condition-specific risks above.<\/p><div class=\"rv-grid\"><a class=\"rv-card rv-cardlink\" href=\"\/ball-valves\/\"><span class=\"rv-num\">01<\/span><h3>Ball Valves<\/h3><p>Pipeline and process isolation with full material-scope review.<\/p><span class=\"rv-state\">VIEW CATEGORY \u2192<\/span><\/a><a class=\"rv-card rv-cardlink\" href=\"\/gate-valves\/\"><span class=\"rv-num\">02<\/span><h3>Gate Valves<\/h3><p>Linear isolation routes for sour pipelines and plants.<\/p><span class=\"rv-state\">VIEW CATEGORY \u2192<\/span><\/a><a class=\"rv-card rv-cardlink\" href=\"\/globe-valves\/\"><span class=\"rv-num\">03<\/span><h3>Globe Valves<\/h3><p>Isolation and throttling with stem\/trim hardness control.<\/p><span class=\"rv-state\">VIEW CATEGORY \u2192<\/span><\/a><a class=\"rv-card rv-cardlink\" href=\"\/check-valves\/\"><span class=\"rv-num\">04<\/span><h3>Check Valves<\/h3><p>Reverse-flow protection with spring, pin and trim review.<\/p><span class=\"rv-state\">VIEW CATEGORY \u2192<\/span><\/a><a class=\"rv-card rv-cardlink\" href=\"\/control-valves\/\"><span class=\"rv-num\">05<\/span><h3>Control Valves<\/h3><p>Sour materials plus pressure-drop and erosion evaluation.<\/p><span class=\"rv-state\">VIEW CATEGORY \u2192<\/span><\/a><a class=\"rv-card rv-cardlink\" href=\"\/actuated-valves\/\"><span class=\"rv-num\">06<\/span><h3>Actuated Packages<\/h3><p>Valve and actuator packages for remote or shutdown service.<\/p><span class=\"rv-state\">VIEW CATEGORY \u2192<\/span><\/a><\/div><\/div><\/section>\n<section class=\"rv-section rv-dark\"><div class=\"rv-wrap\"><div class=\"rv-kicker\" style=\"color:#f3cc18\">Selection boundaries<\/div><h2 class=\"rv-h2\">Common shortcuts that create specification risk<\/h2><div class=\"rv-limitgrid\"><div class=\"rv-limit\"><h3>Do not define sour service with the word sulfur alone<\/h3><p>H2S exposure, water phase, pH, chlorides, pressure, temperature and contaminants must be stated.<\/p><\/div><div class=\"rv-limit\"><h3>Do not approve a valve because the body grade is listed<\/h3><p>Stem, closure, springs, bolting, welds, cold-worked parts and heat-affected zones also matter.<\/p><\/div><div class=\"rv-limit\"><h3>Sour-service compliance is not universal corrosion resistance<\/h3><p>Cracking control and general\/localized corrosion selection are related but different engineering tasks.<\/p><\/div><\/div><\/div><\/section>\n<section class=\"rv-section\"><div class=\"rv-wrap\"><div class=\"rv-kicker\">Condition-specific workflow<\/div><h2 class=\"rv-h2\">From process evidence to an auditable valve decision<\/h2><div class=\"rv-flow\"><div class=\"rv-step\"><b>1. Define the environment<\/b><span>Calculate or provide H2S\/CO2 conditions, water phase, pH and chlorides.<\/span><\/div><div class=\"rv-step\"><b>2. Set the governing scope<\/b><span>Identify the required NACE\/ISO and project material rules.<\/span><\/div><div class=\"rv-step\"><b>3. Map every exposed component<\/b><span>Include pressure parts, trim, stem, springs, pins, bolting and welds.<\/span><\/div><div class=\"rv-step\"><b>4. Control material condition<\/b><span>Specify grade, heat treatment, hardness, cold work and repair.<\/span><\/div><div class=\"rv-step\"><b>5. Verify fabrication<\/b><span>Approve welding, PWHT, hardness survey, PMI and traceability.<\/span><\/div><div class=\"rv-step\"><b>6. Assemble compliance evidence<\/b><span>Link certificates and records to components and valve tags.<\/span><\/div><\/div><\/div><\/section>\n<section class=\"rv-section rv-dark\"><div class=\"rv-wrap\"><div class=\"rv-kicker\" style=\"color:#f3cc18\">RFQ checklist<\/div><h2 class=\"rv-h2\">Information required before technical quotation<\/h2><div class=\"rv-check\"><div>Complete gas and liquid composition<\/div><div>H2S and CO2 partial-pressure basis<\/div><div>Water phase, pH, chlorides and elemental sulfur<\/div><div>Pressure, temperature and upset conditions<\/div><div>Required NACE MR0175\/ISO 15156 or project scope<\/div><div>All exposed component materials and hardness limits<\/div><div>Welding, PWHT, PMI and hardness survey requirements<\/div><div>Traceability, inspection, certificates and final dossier<\/div><\/div><\/div><\/section>\n<section class=\"rv-section\"><div class=\"rv-wrap\"><div class=\"rv-kicker\">Technical authority and scope<\/div><h2 class=\"rv-h2\">How this working-condition page should be used<\/h2><div class=\"rv-trust\"><div class=\"rv-trustgrid\"><div><b>Primary search intent<\/b><p>Standards verification and technical evaluation for oil-and-gas engineers defining sour-service valve materials, hardness, fabrication and compliance evidence.<\/p><\/div><div><b>Technical content owner<\/b><p>Raymon Valve technical content team. Final tag selection requires engineer review of process data and controlled project documents.<\/p><\/div><div><b>Standards boundary<\/b><p>NACE MR0175\/ISO 15156 is used for material qualification in H2S-containing oil-and-gas production environments within its scope. The purchaser must define the environment and applicable parts\/edition; project specifications may add HIC, SOHIC, hardness, welding or documentation requirements.<\/p><\/div><div><b>Review and update status<\/b><p>Technical scope reviewed 27 July 2026. Standard editions, qualifications and production evidence must be confirmed before order.<\/p><\/div><\/div><div class=\"rv-trustlinks\"><a href=\"\/valve-inspection\/\">Inspection &amp; Testing<\/a><a href=\"\/valve-standards\/\">Valve Standards<\/a><a href=\"\/service\/\">All Solutions<\/a><a href=\"\/contact\/\">Request Engineer Review<\/a><\/div><\/div><\/div><\/section>\n<section class=\"rv-section\"><div class=\"rv-wrap\"><div class=\"rv-kicker\">Frequently asked questions<\/div><h2 class=\"rv-h2\">Sour-Service and H2S Valve Solutions FAQ<\/h2><div class=\"rv-faq\"><details><summary>What information defines sour service for a valve?<\/summary><p>Provide H2S and CO2 conditions, water phase, pH, chlorides, pressure, temperature, sulfur\/contaminants and the required NACE\/ISO or project scope.<\/p><\/details><details><summary>Does a NACE material grade make the whole valve compliant?<\/summary><p>No. Compliance depends on the environment, material condition, hardness, cold work, welding and every exposed component within the specified scope.<\/p><\/details><details><summary>Is sour-service compliance the same as corrosion resistance?<\/summary><p>No. Sour-service standards mainly control specific cracking risks; general and localized corrosion still require separate material selection.<\/p><\/details><details><summary>What evidence should be requested?<\/summary><p>Common project evidence includes material certificates, hardness results, PMI, heat treatment, welding\/PWHT records, component traceability and a tag-linked document index.<\/p><\/details><\/div><\/div><\/section>\n<section class=\"rv-section\" style=\"padding-top:0\"><div class=\"rv-wrap\"><div class=\"rv-cta\"><div><div class=\"rv-kicker\" style=\"color:#f3cc18\">Condition review<\/div><h2>Send the complete operating envelope and project requirements<\/h2><p>We will identify missing data, interacting risks and the appropriate valve engineering route.<\/p><\/div><div class=\"rv-actions\"><a class=\"rv-btn rv-primary\" href=\"\/contact\/\">Request Condition Review<\/a><a class=\"rv-btn rv-ghost\" href=\"\/service\/\">All Solutions<\/a><\/div><\/div><\/div><\/section>\n<\/main><script type=\"application\/ld+json\">[{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/raymonvalve.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Solutions\",\"item\":\"https:\/\/raymonvalve.com\/service\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Sour-Service and H2S Valve Solutions\",\"item\":\"https:\/\/raymonvalve.com\/sulfur-resistance-working-condition\/\"}]},{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What information defines sour service for a valve?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Provide H2S and CO2 conditions, water phase, pH, chlorides, pressure, temperature, sulfur\/contaminants and the required NACE\/ISO or project scope.\"}},{\"@type\":\"Question\",\"name\":\"Does a NACE material grade make the whole valve compliant?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Compliance depends on the environment, material condition, hardness, cold work, welding and every exposed component within the specified scope.\"}},{\"@type\":\"Question\",\"name\":\"Is sour-service compliance the same as corrosion resistance?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Sour-service standards mainly control specific cracking risks; 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