{"id":53135,"date":"2026-05-15T06:00:33","date_gmt":"2026-05-15T06:00:33","guid":{"rendered":"https:\/\/zobai.com\/?page_id=53135"},"modified":"2026-05-15T06:03:47","modified_gmt":"2026-05-15T06:03:47","slug":"boilers-steam","status":"publish","type":"page","link":"https:\/\/zobai.com\/es\/applications\/boilers-steam\/","title":{"rendered":"Calderas y vapor"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"53135\" class=\"elementor elementor-53135\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2dd1c825 e-con-full e-flex cmsmasters-bg-hide-none cmsmasters-bg-hide-none cmsmasters-block-default e-con e-parent\" data-id=\"2dd1c825\" 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-658e2a28 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"658e2a28\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-58b1363a cmsmasters-breadcrumbs-alignment-left cmsmasters-breadcrumbs-type-rank cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-cmsmasters-breadcrumbs cmsmasters-widget-breadcrumbs\" data-id=\"58b1363a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"cmsmasters-breadcrumbs.default\">\n\t\t\t\t\t<div class=\"cmsmasters-widget-breadcrumbs__container\"><div class=\"cmsmasters-widget-breadcrumbs__content\"><nav aria-label=\"breadcrumbs\" class=\"rank-math-breadcrumb\"><p><span class=\"last\">Home<\/span><\/p><\/nav><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a97cea2 elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"a97cea2\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;cmsmasters-fade-in-up&quot;,&quot;_animation_delay&quot;:150}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Boiler &amp; Steam Safety Valves for Steam Generation and Pressure Relief Systems<\/h1>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-123972ff e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"123972ff\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-48a35e29 cmsmasters-button-mobile-align-center cmsmasters-icon-arrangement-together cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-cmsmasters-button\" data-id=\"48a35e29\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;cmsmasters-pop-in&quot;,&quot;_animation_delay&quot;:300}\" data-widget_type=\"cmsmasters-button.default\">\n\t\t\t\t\t<div class=\"elementor-widget-cmsmasters-button__button-container\"><div class=\"elementor-widget-cmsmasters-button__button-container-inner\"><a href=\"https:\/\/zobai.com\/es\/?page_id=48437\" class=\"cmsmasters-button-link elementor-widget-cmsmasters-button__button cmsmasters-icon-view-default cmsmasters-icon-shape- cmsmasters-button-size-sm\" role=\"button\" tabindex=\"0\"><span class=\"elementor-widget-cmsmasters-button__content-wrapper cmsmasters-align-icon-right\"><span class=\"elementor-widget-cmsmasters-button__icon\"><i aria-hidden=\"true\" class=\"cmsmsdemo-icon- cmsms-demo-icon-arrows-1\"><\/i><\/span><span class=\"elementor-widget-cmsmasters-button__text\">CONTACT SALES<\/span><\/span><\/a><\/div><\/div>\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-57d524fd e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"57d524fd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-6aa42169 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6aa42169\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-164376b0 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=\"164376b0\" 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-2a188723 e-con-full e-flex cmsmasters-block-default e-con e-parent\" data-id=\"2a188723\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-60493df2 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-html\" data-id=\"60493df2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>\r\n  .zobai-boiler-page {\r\n    --z-green: #0fad87;\r\n    --z-green-dark: #087761;\r\n    --z-ink: #20242a;\r\n    --z-muted: #66727f;\r\n    --z-bg: #f3f4f5;\r\n    --z-card: #ffffff;\r\n    --z-line: #e3e8ec;\r\n    --z-soft: #eef8f5;\r\n    --z-dark: #102522;\r\n    --z-radius: 22px;\r\n    font-family: inherit;\r\n    color: var(--z-ink);\r\n    background: var(--z-bg);\r\n  }\r\n\r\n  .zobai-boiler-page * {\r\n    box-sizing: border-box;\r\n  }\r\n\r\n  .zobai-boiler-section {\r\n    max-width: 100%;\r\n    margin: 0 auto;\r\n    padding: 88px 80px;\r\n  }\r\n\r\n  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14px;\r\n    line-height: 1.6;\r\n  }\r\n\r\n  @media (max-width: 1024px) {\r\n    .zobai-boiler-span-4,\r\n    .zobai-boiler-span-5,\r\n    .zobai-boiler-span-6,\r\n    .zobai-boiler-span-7,\r\n    .zobai-boiler-span-12 {\r\n      grid-column: span 12;\r\n    }\r\n\r\n    .zobai-boiler-kpi,\r\n    .zobai-boiler-link-grid {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .zobai-boiler-rfq {\r\n      grid-template-columns: 1fr;\r\n    }\r\n  }\r\n\r\n  @media (max-width: 640px) {\r\n    .zobai-boiler-section {\r\n      padding: 58px 18px;\r\n    }\r\n\r\n    .zobai-boiler-card,\r\n    .zobai-boiler-hero-panel,\r\n    .zobai-boiler-rfq,\r\n    .zobai-boiler-case {\r\n      padding: 26px 20px;\r\n      border-radius: 24px;\r\n    }\r\n\r\n    .zobai-boiler-flow-item {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .zobai-boiler-case-top {\r\n      flex-direction: column;\r\n    }\r\n\r\n    .zobai-boiler-case-data {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .zobai-boiler-rfq-grid {\r\n      grid-template-columns: 1fr;\r\n    }\r\n  }\r\n<\/style>\r\n\r\n<div class=\"zobai-boiler-page\">\r\n\r\n  <section class=\"zobai-boiler-section\">\r\n    <div class=\"zobai-boiler-hero-panel\">\r\n      <div class=\"zobai-boiler-eyebrow\">Boiler & Steam Pressure Relief<\/div>\r\n      <h2>Boiler and Steam Safety Valves for Steam Generation, Headers and Process Steam Systems<\/h2>\r\n      <p>\r\n        Boiler and steam safety valves protect steam boilers, steam drums, superheaters, reheaters, exhaust gas economizers, steam headers, PRDS stations, clean steam generators, autoclaves, heat exchangers and steam-jacketed process equipment from overpressure. Correct selection starts with boiler MAWP, set pressure, steam capacity, accumulation allowance, relieving temperature, connection rating, discharge piping, lifting lever requirement, certification and inspection documents.\r\n      <\/p>\r\n\r\n      <div class=\"zobai-boiler-kpi\">\r\n        <div class=\"zobai-boiler-kpi-item\">\r\n          <strong>Core Equipment<\/strong>\r\n          <span>Boilers, steam drums, headers, PRDS, clean steam and heat exchangers<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-boiler-kpi-item\">\r\n          <strong>Key Relief Cases<\/strong>\r\n          <span>Firing control failure, blocked steam demand, regulator failure and thermal expansion<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-boiler-kpi-item\">\r\n          <strong>Engineering Focus<\/strong>\r\n          <span>MAWP, set pressure, steam capacity, accumulation and discharge piping<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-boiler-kpi-item\">\r\n          <strong>RFQ Output<\/strong>\r\n          <span>Datasheet, certified capacity, calibration, test report and material records<\/span>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-boiler-section zobai-boiler-section-soft\">\r\n    <div class=\"zobai-boiler-eyebrow\">Steam Applications<\/div>\r\n    <h2 class=\"zobai-boiler-title\">Where Safety Valves Are Used in Boiler and Steam Systems<\/h2>\r\n    <p class=\"zobai-boiler-lead\">\r\n      Steam safety valves are not generic relief valves. Boiler service requires verified steam capacity, correct set pressure, stable opening, safe discharge and inspection-ready documentation. Process steam systems also need review of pressure reducing stations, clean steam users, heat exchangers and downstream low-pressure equipment.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-boiler-grid\">\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-4\">\r\n        <h3>Power and Industrial Boilers<\/h3>\r\n        <p>\r\n          Used on water-tube boilers, fire-tube boilers, packaged boilers, biomass boilers, waste heat boilers and auxiliary boilers. Selection should confirm MAWP, total steam generation capacity, set pressure, accumulation requirement and discharge pipe arrangement.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-4\">\r\n        <h3>Steam Drums and Superheaters<\/h3>\r\n        <p>\r\n          Used on steam drums, superheater outlets, reheater systems and high-temperature steam lines. Temperature rating, spring material, nozzle load, drainage and discharge reaction force must be reviewed.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-4\">\r\n        <h3>Steam Headers and Distribution<\/h3>\r\n        <p>\r\n          Used on main steam headers, plant steam distribution, utility steam manifolds and branch lines. Relief scenarios include blocked downstream demand, pressure control failure and pressure reducing station malfunction.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-4\">\r\n        <h3>PRDS and Pressure Reducing Stations<\/h3>\r\n        <p>\r\n          Used downstream of pressure reducing valves and desuperheating stations to protect low-pressure headers and users. Regulator failure and bypass valve leakage are common selection cases.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-4\">\r\n        <h3>Clean Steam and Sterilization<\/h3>\r\n        <p>\r\n          Used on clean steam generators, SIP headers, autoclaves, sterilizers and pharmaceutical or food-grade steam systems. Material traceability, cleanability, drainability and calibration records may be required.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-4\">\r\n        <h3>Heat Exchangers and Jacketed Equipment<\/h3>\r\n        <p>\r\n          Used on reboilers, shell-and-tube heat exchangers, steam coils, jacketed kettles and hot water generators. Tube rupture, steam-side failure and trapped condensate expansion should be reviewed.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-boiler-section\">\r\n    <div class=\"zobai-boiler-eyebrow\">Relief Case Analysis<\/div>\r\n    <h2 class=\"zobai-boiler-title\">Boiler and Steam PSV Selection Starts With the Steam Overpressure Scenario<\/h2>\r\n    <p class=\"zobai-boiler-lead\">\r\n      A steam safety valve must be selected from the governing overpressure case. The boiler or steam equipment MAWP defines the protection limit, while the required capacity comes from boiler output, pressure reducing failure, heat input, blocked demand or downstream pressure boundary.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-boiler-flow\">\r\n      <div class=\"zobai-boiler-flow-item\">\r\n        <div class=\"zobai-boiler-flow-num\">01<\/div>\r\n        <div>\r\n          <h3>Boiler Firing Control Failure<\/h3>\r\n          <p>\r\n            When fuel input continues while steam demand drops, boiler pressure can rise quickly. The safety valve must relieve enough steam to prevent pressure from exceeding the allowed accumulation limit.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-flow-item\">\r\n        <div class=\"zobai-boiler-flow-num\">02<\/div>\r\n        <div>\r\n          <h3>Blocked Steam Demand or Closed Outlet<\/h3>\r\n          <p>\r\n            If downstream steam users are isolated or a main steam valve is closed, steam generation can exceed demand. The valve should be sized from maximum credible steam generation or upstream supply capacity.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-flow-item\">\r\n        <div class=\"zobai-boiler-flow-num\">03<\/div>\r\n        <div>\r\n          <h3>Pressure Reducing Valve Failure<\/h3>\r\n          <p>\r\n            A failed PRV can expose a low-pressure steam header, heat exchanger or process user to high upstream pressure. The downstream safety valve must protect the lowest-rated downstream pressure boundary.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-flow-item\">\r\n        <div class=\"zobai-boiler-flow-num\">04<\/div>\r\n        <div>\r\n          <h3>Heat Exchanger Tube Rupture<\/h3>\r\n          <p>\r\n            Steam can enter a low-pressure process or water side after tube rupture. The relief valve selection should review pressure differential, steam flow path, downstream capacity and safe discharge location.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-flow-item\">\r\n        <div class=\"zobai-boiler-flow-num\">05<\/div>\r\n        <div>\r\n          <h3>Thermal Expansion of Trapped Condensate or Water<\/h3>\r\n          <p>\r\n            Hot water, condensate or water trapped between closed valves can expand as temperature rises. Thermal relief valves may be needed on blocked-in liquid sections near steam heating equipment.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-flow-item\">\r\n        <div class=\"zobai-boiler-flow-num\">06<\/div>\r\n        <div>\r\n          <h3>Clean Steam or SIP Pressure Spike<\/h3>\r\n          <p>\r\n            Sterilization systems can see rapid pressure changes during SIP, condensate restriction or blocked users. Clean steam valves should be reviewed for drainage, repeatable reseating and documentation.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-boiler-section zobai-boiler-section-soft\">\r\n    <div class=\"zobai-boiler-eyebrow\">Application Case Data<\/div>\r\n    <h2 class=\"zobai-boiler-title\">Boiler and Steam Safety Valve Application Cases with Typical RFQ Data<\/h2>\r\n    <p class=\"zobai-boiler-lead\">\r\n      These cases show how boiler and steam safety valve requirements are usually described before model selection. Final sizing must be confirmed by boiler datasheet, steam capacity, applicable code, certified capacity and engineering review.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-boiler-grid\">\r\n      <div class=\"zobai-boiler-case zobai-boiler-span-6\">\r\n        <div class=\"zobai-boiler-case-top\">\r\n          <h3>Case 1: Packaged Fire-Tube Boiler Safety Valve<\/h3>\r\n          <span class=\"zobai-boiler-case-tag\">Boiler MAWP<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-boiler-case-data\">\r\n          <div><b>Protected equipment:<\/b> 10 t\/h packaged steam boiler<\/div>\r\n          <div><b>Medium:<\/b> Saturated steam<\/div>\r\n          <div><b>MAWP:<\/b> 10 barg<\/div>\r\n          <div><b>Set pressure:<\/b> 10 barg<\/div>\r\n          <div><b>Operating pressure:<\/b> 7\u20138 barg<\/div>\r\n          <div><b>Relief cause:<\/b> Firing control failure or blocked steam demand<\/div>\r\n          <div><b>Required capacity:<\/b> Full boiler steam generation capacity<\/div>\r\n          <div><b>Key review:<\/b> Certified steam capacity, lifting lever, discharge pipe and calibration record<\/div>\r\n        <\/div>\r\n        <p>\r\n          Boiler safety valves must be selected from boiler maximum steam generation, not only the outlet nozzle size. The final valve should have certified steam capacity and documentation acceptable for inspection.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-case zobai-boiler-span-6\">\r\n        <div class=\"zobai-boiler-case-top\">\r\n          <h3>Case 2: Superheated Steam Header Safety Valve<\/h3>\r\n          <span class=\"zobai-boiler-case-tag\">High Temperature Steam<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-boiler-case-data\">\r\n          <div><b>Protected equipment:<\/b> Superheated steam header<\/div>\r\n          <div><b>Medium:<\/b> Superheated steam<\/div>\r\n          <div><b>Normal pressure:<\/b> 3.8 MPa<\/div>\r\n          <div><b>Set pressure:<\/b> 4.2 MPa<\/div>\r\n          <div><b>Relieving temperature:<\/b> 420\u00b0C<\/div>\r\n          <div><b>Relief cause:<\/b> Blocked downstream demand<\/div>\r\n          <div><b>Discharge:<\/b> Silencer or safe outdoor vent<\/div>\r\n          <div><b>Key review:<\/b> High-temperature trim, spring range, reaction force and pipe support<\/div>\r\n        <\/div>\r\n        <p>\r\n          High-temperature steam service requires more attention to material, spring stability and outlet piping load. Discharge reaction force and thermal expansion should be reviewed before installation.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-case zobai-boiler-span-6\">\r\n        <div class=\"zobai-boiler-case-top\">\r\n          <h3>Case 3: PRDS Downstream Header Protection<\/h3>\r\n          <span class=\"zobai-boiler-case-tag\">PRV Failure<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-boiler-case-data\">\r\n          <div><b>Protected equipment:<\/b> Low-pressure steam header<\/div>\r\n          <div><b>Medium:<\/b> Saturated or slightly superheated steam<\/div>\r\n          <div><b>Upstream pressure:<\/b> 16 barg<\/div>\r\n          <div><b>Downstream design pressure:<\/b> 6 barg<\/div>\r\n          <div><b>Set pressure:<\/b> 5.8 barg<\/div>\r\n          <div><b>Relief cause:<\/b> Pressure reducing valve failure<\/div>\r\n          <div><b>Required data:<\/b> PRV maximum flow or upstream supply capacity<\/div>\r\n          <div><b>Key review:<\/b> Downstream MAWP, bypass leakage, silencer back pressure and steam capacity<\/div>\r\n        <\/div>\r\n        <p>\r\n          PRDS downstream protection should be based on the maximum credible steam flow through a failed regulator or bypass. The valve should protect the low-pressure equipment, not the upstream pressure rating.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-case zobai-boiler-span-6\">\r\n        <div class=\"zobai-boiler-case-top\">\r\n          <h3>Case 4: Clean Steam Generator Safety Valve<\/h3>\r\n          <span class=\"zobai-boiler-case-tag\">Clean Steam<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-boiler-case-data\">\r\n          <div><b>Protected equipment:<\/b> Clean steam generator outlet<\/div>\r\n          <div><b>Medium:<\/b> Clean steam<\/div>\r\n          <div><b>Normal pressure:<\/b> 3 barg<\/div>\r\n          <div><b>Set pressure:<\/b> 4.5 barg<\/div>\r\n          <div><b>Relieving temperature:<\/b> Saturated steam temperature<\/div>\r\n          <div><b>Relief cause:<\/b> Pressure control failure or blocked steam demand<\/div>\r\n          <div><b>Discharge:<\/b> Safe vent with condensate drainage<\/div>\r\n          <div><b>Key review:<\/b> Cleanability, 316L wetted parts, calibration certificate and drainability<\/div>\r\n        <\/div>\r\n        <p>\r\n          Clean steam service may require hygienic materials, traceable documents and cleanable installation. Condensate pockets should be avoided because they can affect operation and sanitation.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-case zobai-boiler-span-6\">\r\n        <div class=\"zobai-boiler-case-top\">\r\n          <h3>Case 5: Steam Heat Exchanger Shell-Side PSV<\/h3>\r\n          <span class=\"zobai-boiler-case-tag\">Tube Rupture<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-boiler-case-data\">\r\n          <div><b>Protected equipment:<\/b> Low-pressure heat exchanger side<\/div>\r\n          <div><b>Medium:<\/b> Steam or hot water<\/div>\r\n          <div><b>High-pressure side:<\/b> 16 barg steam<\/div>\r\n          <div><b>Low-pressure side MAWP:<\/b> 6 barg<\/div>\r\n          <div><b>Set pressure:<\/b> 5.8 barg<\/div>\r\n          <div><b>Relief cause:<\/b> Tube rupture or pressure control failure<\/div>\r\n          <div><b>Discharge:<\/b> Safe drain, vent or closed collection<\/div>\r\n          <div><b>Key review:<\/b> Pressure differential, transient flow, steam flashing and discharge safety<\/div>\r\n        <\/div>\r\n        <p>\r\n          Heat exchanger protection should check whether high-pressure steam can enter a lower-pressure side. This case is often missed when selecting only by existing valve nameplate.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-case zobai-boiler-span-6\">\r\n        <div class=\"zobai-boiler-case-top\">\r\n          <h3>Case 6: Condensate Flash Tank Safety Valve<\/h3>\r\n          <span class=\"zobai-boiler-case-tag\">Flash Steam<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-boiler-case-data\">\r\n          <div><b>Protected equipment:<\/b> Condensate flash tank<\/div>\r\n          <div><b>Medium:<\/b> Flash steam and hot condensate<\/div>\r\n          <div><b>Normal pressure:<\/b> 1\u20133 barg<\/div>\r\n          <div><b>Set pressure:<\/b> Vessel datasheet value<\/div>\r\n          <div><b>Relieving temperature:<\/b> Saturated condition<\/div>\r\n          <div><b>Relief cause:<\/b> Blocked flash steam outlet or control failure<\/div>\r\n          <div><b>Discharge:<\/b> Safe vent or low-pressure steam system<\/div>\r\n          <div><b>Key review:<\/b> Two-phase potential, condensate carryover, drainage and vessel MAWP<\/div>\r\n        <\/div>\r\n        <p>\r\n          Flash tanks can relieve wet steam or two-phase flow during upset. Valve selection should review condensate carryover, drainage and discharge route, not only steam pressure.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-boiler-section\">\r\n    <div class=\"zobai-boiler-eyebrow\">Service Data Matrix<\/div>\r\n    <h2 class=\"zobai-boiler-title\">Boiler and Steam Safety Valve Data Matrix<\/h2>\r\n\r\n    <div class=\"zobai-boiler-table-wrap\">\r\n      <table class=\"zobai-boiler-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Steam Service<\/th>\r\n            <th>Typical Medium<\/th>\r\n            <th>Common Relief Cause<\/th>\r\n            <th>Required Engineering Check<\/th>\r\n            <th>Recommended Valve Review<\/th>\r\n            <th>Risk if Missed<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td>Steam boiler<\/td>\r\n            <td>Saturated steam<\/td>\r\n            <td>Firing control failure, blocked steam demand<\/td>\r\n            <td>Boiler MAWP, total steaming capacity, accumulation, certified capacity<\/td>\r\n            <td>Spring-loaded steam safety valve with lifting lever and test certificate<\/td>\r\n            <td>Boiler overpressure or failed inspection<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Superheated steam header<\/td>\r\n            <td>Superheated steam<\/td>\r\n            <td>Blocked downstream outlet or control failure<\/td>\r\n            <td>Relieving temperature, material, spring range, discharge reaction force<\/td>\r\n            <td>High-temperature steam valve with suitable trim and outlet support<\/td>\r\n            <td>Seat damage, spring relaxation or unsafe discharge load<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>PRDS downstream header<\/td>\r\n            <td>Reduced-pressure steam<\/td>\r\n            <td>Pressure reducing valve failure or bypass leakage<\/td>\r\n            <td>Downstream MAWP, maximum PRV flow, back pressure and silencer data<\/td>\r\n            <td>Steam PSV sized for regulator failure capacity<\/td>\r\n            <td>Low-pressure header overpressure<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Clean steam system<\/td>\r\n            <td>Clean steam, SIP steam<\/td>\r\n            <td>Pressure control failure, blocked user, condensate restriction<\/td>\r\n            <td>Cleanability, drainability, 316L material, calibration records<\/td>\r\n            <td>Sanitary or clean steam safety valve where required<\/td>\r\n            <td>Contamination risk, condensate pocket or validation delay<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Steam heat exchanger<\/td>\r\n            <td>Steam, condensate, hot water<\/td>\r\n            <td>Tube rupture, trapped condensate, regulator failure<\/td>\r\n            <td>Pressure differential, tube rupture case, thermal expansion and discharge path<\/td>\r\n            <td>PSV or thermal relief valve based on governing case<\/td>\r\n            <td>Low-pressure side overpressure or unsafe flashing discharge<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Flash tank and condensate system<\/td>\r\n            <td>Flash steam, hot condensate<\/td>\r\n            <td>Blocked vent, flash steam outlet restriction, control failure<\/td>\r\n            <td>Wet steam, two-phase potential, drainage and vessel MAWP<\/td>\r\n            <td>Steam relief valve with drainage and carryover review<\/td>\r\n            <td>Valve instability, condensate discharge or vessel overpressure<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-boiler-section zobai-boiler-section-soft\">\r\n    <div class=\"zobai-boiler-eyebrow\">Selection Framework<\/div>\r\n    <h2 class=\"zobai-boiler-title\">How to Specify a Boiler or Steam Safety Valve Correctly<\/h2>\r\n\r\n    <div class=\"zobai-boiler-grid\">\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-6\">\r\n        <h3>1. Confirm boiler MAWP or protected equipment design pressure<\/h3>\r\n        <p>\r\n          Start with boiler nameplate, steam drum datasheet, header design pressure, pressure vessel MAWP or downstream equipment pressure limit. The set pressure should protect the lowest-rated pressure boundary.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-6\">\r\n        <h3>2. Confirm required steam relieving capacity<\/h3>\r\n        <p>\r\n          For boilers, use the required steam capacity basis from boiler output and applicable code. For PRDS and headers, use the maximum credible flow from failed regulators, bypass valves or upstream supply.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-6\">\r\n        <h3>3. Define steam condition at relieving point<\/h3>\r\n        <p>\r\n          Saturated steam, superheated steam, wet steam, flash steam and clean steam all affect selection. Relieving pressure, relieving temperature, dryness and possible condensate carryover should be stated clearly.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-6\">\r\n        <h3>4. Review accumulation and blowdown requirements<\/h3>\r\n        <p>\r\n          Boiler and steam systems require stable opening and reseating. Accumulation, blowdown, simmering, operating margin and set pressure tolerance should be reviewed against the applicable project standard.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-6\">\r\n        <h3>5. Review discharge piping and reaction force<\/h3>\r\n        <p>\r\n          Steam discharge can create high noise, high temperature, condensate, reaction force and water hammer risk. Vent pipe support, drainage, silencer back pressure and safe outlet location are part of valve selection.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-6\">\r\n        <h3>6. Confirm testing and documentation<\/h3>\r\n        <p>\r\n          Steam projects may require certified capacity, set pressure calibration, hydrostatic test, seat tightness test, material certificates, nameplate marking, inspection witness and repair or recalibration records.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-boiler-section\">\r\n    <div class=\"zobai-boiler-eyebrow\">Installation & Discharge<\/div>\r\n    <h2 class=\"zobai-boiler-title\">Steam Safety Valves Must Be Reviewed With Vent Piping, Drainage and Inspection Access<\/h2>\r\n\r\n    <div class=\"zobai-boiler-grid\">\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-7\">\r\n        <h3>Why steam discharge design matters<\/h3>\r\n        <p>\r\n          Steam safety valves discharge hot, high-velocity vapor. Poor outlet design can create excessive back pressure, reaction loads, noise, water hammer, condensate accumulation or unsafe release toward personnel and equipment.\r\n        <\/p>\r\n        <p>\r\n          Boiler and steam installations should be reviewed for short and direct inlet piping, vertical installation where required, vent pipe support, drain points, discharge outlet direction, lifting lever access, test access and safe maintenance clearance.\r\n        <\/p>\r\n        <div class=\"zobai-boiler-chip-row\">\r\n          <span class=\"zobai-boiler-chip\">Certified Steam Capacity<\/span>\r\n          <span class=\"zobai-boiler-chip\">Boiler MAWP<\/span>\r\n          <span class=\"zobai-boiler-chip\">Discharge Reaction<\/span>\r\n          <span class=\"zobai-boiler-chip\">Vent Pipe Drainage<\/span>\r\n          <span class=\"zobai-boiler-chip\">Lifting Lever<\/span>\r\n          <span class=\"zobai-boiler-chip\">Calibration Record<\/span>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-5\">\r\n        <h3>Field installation checks<\/h3>\r\n        <ul class=\"zobai-boiler-list\">\r\n          <li>Install the valve directly on the boiler or protected steam equipment where required.<\/li>\r\n          <li>Keep inlet pressure loss within the project design limit.<\/li>\r\n          <li>Do not install unauthorized isolation valves between boiler and safety valve.<\/li>\r\n          <li>Support discharge piping without loading the valve body.<\/li>\r\n          <li>Provide drains to prevent condensate accumulation in outlet piping.<\/li>\r\n          <li>Route steam discharge to a safe outdoor location or approved silencer.<\/li>\r\n          <li>Keep lifting lever, test connection and calibration access available for inspection.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-boiler-section zobai-boiler-section-soft\">\r\n    <div class=\"zobai-boiler-eyebrow\">Standards & Documentation<\/div>\r\n    <h2 class=\"zobai-boiler-title\">Standards and Documents to Confirm Before Ordering<\/h2>\r\n\r\n    <div class=\"zobai-boiler-grid\">\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-6\">\r\n        <h3>Common standard references<\/h3>\r\n        <p>\r\n          Boiler and steam safety valve specifications may reference ASME, NBIC, API, ISO, EN, GB, local boiler regulations, insurance requirements or owner specifications. The applicable code basis should be confirmed before quotation.\r\n        <\/p>\r\n        <ul class=\"zobai-boiler-list\">\r\n          <li><a href=\"\/standards\/asme-section-i\/\">ASME BPVC Section I<\/a> for power boiler construction and boiler safety valve requirements where applicable.<\/li>\r\n          <li><a href=\"\/standards\/asme-section-xiii\/\">ASME BPVC Section XIII<\/a> for overpressure protection rules where specified by the project.<\/li>\r\n          <li><a href=\"\/standards\/nbic\/\">NBIC Part 4<\/a> for pressure relief device installation, inspection, repair and documentation guidance where applicable.<\/li>\r\n          <li><a href=\"\/standards\/api-520\/\">API 520<\/a> for pressure-relieving device sizing and selection reference in industrial process facilities where required.<\/li>\r\n          <li><a href=\"\/standards\/api-527\/\">API 527<\/a> when seat tightness testing is required by specification.<\/li>\r\n          <li>Local boiler inspection rules for set pressure, sealing, testing and periodic inspection.<\/li>\r\n          <li>Owner specifications for clean steam, high-temperature steam, boiler rooms and process steam users.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-6\">\r\n        <h3>Typical document package<\/h3>\r\n        <p>\r\n          Documentation should be agreed before manufacturing, especially for boiler projects, steam headers, PRDS stations, clean steam systems, high-temperature steam and inspection-controlled facilities.\r\n        <\/p>\r\n        <ul class=\"zobai-boiler-list\">\r\n          <li>Technical datasheet with model, size, orifice, set pressure and connection.<\/li>\r\n          <li>Certified steam relieving capacity confirmation.<\/li>\r\n          <li>Set pressure calibration certificate.<\/li>\r\n          <li>Pressure test report and seat tightness test report when required.<\/li>\r\n          <li>Material certificate for pressure-retaining parts and trim when specified.<\/li>\r\n          <li>General arrangement drawing, dimension, weight and discharge orientation.<\/li>\r\n          <li>Nameplate, tag number and project marking confirmation.<\/li>\r\n          <li>Inspection witness record, repair certificate or recalibration record when required.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-boiler-section\">\r\n    <div class=\"zobai-boiler-eyebrow\">RFQ Checklist<\/div>\r\n    <h2 class=\"zobai-boiler-title\">Boiler and Steam Safety Valve RFQ Data Checklist<\/h2>\r\n\r\n    <div class=\"zobai-boiler-table-wrap\">\r\n      <table class=\"zobai-boiler-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Required Data<\/th>\r\n            <th>Why It Matters<\/th>\r\n            <th>Example Input<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td>Protected equipment<\/td>\r\n            <td>Defines the pressure boundary and applicable code basis.<\/td>\r\n            <td>Steam boiler, steam drum, header, PRDS, clean steam generator, heat exchanger<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>MAWP \/ design pressure<\/td>\r\n            <td>Defines the pressure limit that must be protected.<\/td>\r\n            <td>10 barg, 16 barg, 4.2 MPa, 150 psi<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Set pressure<\/td>\r\n            <td>Defines valve opening pressure.<\/td>\r\n            <td>10 barg, 15.5 barg, 4.2 MPa, 145 psi<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Steam condition<\/td>\r\n            <td>Affects capacity, material and temperature selection.<\/td>\r\n            <td>Saturated steam, superheated steam, wet steam, flash steam, clean steam<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Required relieving capacity<\/td>\r\n            <td>Confirms whether the valve can protect the equipment.<\/td>\r\n            <td>kg\/h, t\/h, lb\/h, boiler MCR, PRV maximum flow<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Relieving temperature<\/td>\r\n            <td>Affects trim, spring, body rating and seal selection.<\/td>\r\n            <td>184\u00b0C saturated steam, 250\u00b0C, 420\u00b0C superheated steam<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Relief scenario<\/td>\r\n            <td>Determines the governing capacity basis.<\/td>\r\n            <td>Boiler firing failure, blocked outlet, PRV failure, tube rupture, SIP pressure spike<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Operating pressure<\/td>\r\n            <td>Confirms operating margin and simmering risk.<\/td>\r\n            <td>Normal and maximum operating pressure<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Discharge arrangement<\/td>\r\n            <td>Determines back pressure, reaction load and safety.<\/td>\r\n            <td>Open vent, silencer, vent stack, condensate drain, safe outdoor discharge<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Connection and rating<\/td>\r\n            <td>Ensures compatibility with boiler nozzle and steam piping.<\/td>\r\n            <td>Flanged RF, RTJ, NPT, welded end, Class 150\u20132500, PN16\u2013PN160<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Material requirement<\/td>\r\n            <td>Prevents high-temperature damage, corrosion and compatibility failure.<\/td>\r\n            <td>WCB, WC6, WC9, CF8M, stainless trim, high-temperature spring<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Required documents<\/td>\r\n            <td>Avoids inspection, installation and commissioning delays.<\/td>\r\n            <td>Datasheet, drawing, MTC, calibration report, pressure test, capacity certificate<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <p class=\"zobai-boiler-note\">\r\n      Final selection must be confirmed by boiler datasheet, protected equipment MAWP, steam capacity, applicable code, certified flow data and engineering review.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-boiler-section zobai-boiler-section-soft\">\r\n    <div class=\"zobai-boiler-eyebrow\">Selection Errors<\/div>\r\n    <h2 class=\"zobai-boiler-title\">Common Boiler and Steam Safety Valve Selection Mistakes<\/h2>\r\n\r\n    <div class=\"zobai-boiler-grid\">\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-4\">\r\n        <h3>Buying by connection size only<\/h3>\r\n        <p>\r\n          A valve that fits the nozzle may still be undersized. Boiler safety valves must be checked against required steam relieving capacity and certified flow data.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-4\">\r\n        <h3>Ignoring boiler MAWP<\/h3>\r\n        <p>\r\n          Set pressure should protect the boiler or steam equipment pressure boundary. It should not be selected only from normal operating pressure or old field habits.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-4\">\r\n        <h3>Using saturated steam data for superheated steam<\/h3>\r\n        <p>\r\n          Superheated steam requires review of relieving temperature, material, capacity correction and spring stability. Treating it as saturated service can create selection errors.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-4\">\r\n        <h3>Ignoring discharge pipe reaction force<\/h3>\r\n        <p>\r\n          Steam relief creates high reaction loads and noise. Unsupported outlet piping can damage the valve, nozzle or surrounding structure.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-4\">\r\n        <h3>Allowing condensate pockets in outlet piping<\/h3>\r\n        <p>\r\n          Condensate trapped in discharge piping can cause water hammer, corrosion, freezing or unstable operation. Drainage should be included in installation design.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-card zobai-boiler-span-4\">\r\n        <h3>Missing inspection documents<\/h3>\r\n        <p>\r\n          Boiler projects often require calibration, capacity, material and pressure test records. Missing documents can delay commissioning or inspection approval.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-boiler-section\">\r\n    <div class=\"zobai-boiler-eyebrow\">Related Engineering Resources<\/div>\r\n    <h2 class=\"zobai-boiler-title\">Continue Your Boiler and Steam Pressure Relief Review<\/h2>\r\n    <p class=\"zobai-boiler-lead\">\r\n      These related pages help move from boiler and steam applications to detailed safety valve selection, sizing, high-temperature review, clean steam review and documentation preparation.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-boiler-link-grid\">\r\n      <a class=\"zobai-boiler-link-card\" href=\"\/engineering\/safety-valve-selection-guide\/\">\r\n        <strong>Safety Valve Selection Guide<\/strong>\r\n        <span>Step-by-step guidance for selecting safety valves by medium, pressure, capacity, material and installation condition.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-boiler-link-card\" href=\"\/engineering\/safety-valve-sizing\/\">\r\n        <strong>Safety Valve Sizing<\/strong>\r\n        <span>Review required capacity, orifice selection, pressure data and sizing inputs before RFQ.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-boiler-link-card\" href=\"\/medium\/steam\/\">\r\n        <strong>Steam Safety Valves<\/strong>\r\n        <span>For saturated steam, superheated steam, flash steam, clean steam and steam headers.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-boiler-link-card\" href=\"\/applications\/high-temperature\/\">\r\n        <strong>High Temperature Service<\/strong>\r\n        <span>For superheated steam, boilers, heat exchangers, hot oil and high-temperature process systems.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-boiler-link-card\" href=\"\/medium\/clean-steam\/\">\r\n        <strong>Clean Steam Safety Valves<\/strong>\r\n        <span>For pharmaceutical, food, SIP, sterilization and clean steam generator applications.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-boiler-link-card\" href=\"\/equipment\/heat-exchangers\/\">\r\n        <strong>Heat Exchanger Safety Valves<\/strong>\r\n        <span>For steam-side failure, tube rupture, thermal expansion and low-pressure side protection.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-boiler-link-card\" href=\"\/applications\/high-back-pressure\/\">\r\n        <strong>Back Pressure Review<\/strong>\r\n        <span>For steam silencers, vent headers, outlet piping and closed discharge systems.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-boiler-link-card\" href=\"\/standards\/asme-section-i\/\">\r\n        <strong>ASME Section I Boiler Valves<\/strong>\r\n        <span>Review boiler code basis, steam capacity, set pressure and certification expectations.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-boiler-link-card\" href=\"\/standards\/asme-section-xiii\/\">\r\n        <strong>ASME Section XIII Overpressure Protection<\/strong>\r\n        <span>For overpressure protection rules for boilers, vessels and piping systems where specified.<\/span>\r\n      <\/a>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-boiler-section zobai-boiler-section-soft\">\r\n    <div class=\"zobai-boiler-eyebrow\">FAQ<\/div>\r\n    <h2 class=\"zobai-boiler-title\">Boiler and Steam Safety Valve FAQ<\/h2>\r\n\r\n    <div class=\"zobai-boiler-accordion\" data-zobai-boiler-accordion>\r\n      <div class=\"zobai-boiler-acc-item is-open\">\r\n        <button class=\"zobai-boiler-acc-btn\" type=\"button\">What is the most important factor when selecting a boiler safety valve? <span>+<\/span><\/button>\r\n        <div class=\"zobai-boiler-acc-body\">\r\n          The most important factors are boiler MAWP, set pressure and required steam relieving capacity. The valve must have certified capacity to protect the boiler under the governing overpressure condition.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-acc-item\">\r\n        <button class=\"zobai-boiler-acc-btn\" type=\"button\">Can a steam safety valve be selected by pipe size only? <span>+<\/span><\/button>\r\n        <div class=\"zobai-boiler-acc-body\">\r\n          No. Pipe size only confirms mechanical fit. The valve must also match steam condition, set pressure, required capacity, relieving temperature, material, connection rating, discharge piping and document requirements.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-acc-item\">\r\n        <button class=\"zobai-boiler-acc-btn\" type=\"button\">What data is required for a boiler safety valve quotation? <span>+<\/span><\/button>\r\n        <div class=\"zobai-boiler-acc-body\">\r\n          Provide protected equipment, MAWP, set pressure, steam condition, required relieving capacity, relieving temperature, relief scenario, operating pressure, discharge arrangement, connection, material and required documents.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-acc-item\">\r\n        <button class=\"zobai-boiler-acc-btn\" type=\"button\">Why is steam discharge piping important? <span>+<\/span><\/button>\r\n        <div class=\"zobai-boiler-acc-body\">\r\n          Steam discharge creates high temperature, high velocity, noise, reaction force and condensate. Poor piping can create back pressure, water hammer, unsafe discharge direction or mechanical loading on the valve body.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-acc-item\">\r\n        <button class=\"zobai-boiler-acc-btn\" type=\"button\">What is different about clean steam safety valves? <span>+<\/span><\/button>\r\n        <div class=\"zobai-boiler-acc-body\">\r\n          Clean steam valves may require hygienic material, drainability, cleanability, surface finish control, calibration records and documentation for pharmaceutical, food, SIP or sterilization service.\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-boiler-section\">\r\n    <div class=\"zobai-boiler-rfq\">\r\n      <div>\r\n        <div class=\"zobai-boiler-eyebrow\">Engineering RFQ Support<\/div>\r\n        <h2>Prepare a Complete Boiler or Steam Safety Valve Datasheet Before Quotation<\/h2>\r\n        <p>\r\n          Send the boiler or steam equipment datasheet, MAWP, set pressure, steam condition, required relieving capacity, relieving temperature, relief scenario, operating pressure, discharge arrangement, connection standard, material requirement and required documents. A complete datasheet helps avoid unsafe assumptions and speeds up engineering review.\r\n        <\/p>\r\n        <div class=\"zobai-boiler-btn-row\">\r\n          <a class=\"zobai-boiler-btn zobai-boiler-btn-primary\" href=\"\/contact\/\">Request Engineering Quote<\/a>\r\n          <a class=\"zobai-boiler-btn zobai-boiler-btn-secondary\" href=\"\/ask-an-engineer\/\">Ask an Engineer<\/a>\r\n          <a class=\"zobai-boiler-btn zobai-boiler-btn-secondary\" href=\"\/catalog-pdf\/\">Download Catalog PDF<\/a>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-boiler-rfq-box\">\r\n        <h3>Minimum RFQ data<\/h3>\r\n        <div class=\"zobai-boiler-rfq-grid\">\r\n          <div class=\"zobai-boiler-rfq-item\">Boiler MAWP<\/div>\r\n          <div class=\"zobai-boiler-rfq-item\">Set Pressure<\/div>\r\n          <div class=\"zobai-boiler-rfq-item\">Steam Condition<\/div>\r\n          <div class=\"zobai-boiler-rfq-item\">Required Capacity<\/div>\r\n          <div class=\"zobai-boiler-rfq-item\">Temperature<\/div>\r\n          <div class=\"zobai-boiler-rfq-item\">Relief Scenario<\/div>\r\n          <div class=\"zobai-boiler-rfq-item\">Operating Pressure<\/div>\r\n          <div class=\"zobai-boiler-rfq-item\">Discharge Route<\/div>\r\n          <div class=\"zobai-boiler-rfq-item\">Material<\/div>\r\n          <div class=\"zobai-boiler-rfq-item\">Connection<\/div>\r\n          <div class=\"zobai-boiler-rfq-item\">Code Basis<\/div>\r\n          <div class=\"zobai-boiler-rfq-item\">Documents<\/div>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n<\/div>\r\n\r\n<script>\r\n  (function () {\r\n    var accordions = document.querySelectorAll('[data-zobai-boiler-accordion]');\r\n    accordions.forEach(function (accordion) {\r\n      var items = accordion.querySelectorAll('.zobai-boiler-acc-item');\r\n\r\n      items.forEach(function (item) {\r\n        var button = item.querySelector('.zobai-boiler-acc-btn');\r\n        button.addEventListener('click', function () {\r\n          var isOpen = item.classList.contains('is-open');\r\n\r\n          items.forEach(function (i) {\r\n            i.classList.remove('is-open');\r\n          });\r\n\r\n          if (!isOpen) {\r\n            item.classList.add('is-open');\r\n          }\r\n        });\r\n      });\r\n    });\r\n  })();\r\n<\/script>\r\n\r\n<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"FAQPage\",\r\n  \"mainEntity\": [\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What is the most important factor when selecting a boiler safety valve?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"The most important factors are boiler MAWP, set pressure and required steam relieving capacity. The valve must have certified capacity to protect the boiler under the governing overpressure condition.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Can a steam safety valve be selected by pipe size only?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"No. Pipe size only confirms mechanical fit. The valve must also match steam condition, set pressure, required capacity, relieving temperature, material, connection rating, discharge piping and document requirements.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What data is required for a boiler safety valve quotation?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Provide protected equipment, MAWP, set pressure, steam condition, required relieving capacity, relieving temperature, relief scenario, operating pressure, discharge arrangement, connection, material and required documents.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Why is steam discharge piping important?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Steam discharge creates high temperature, high velocity, noise, reaction force and condensate. Poor piping can create back pressure, water hammer, unsafe discharge direction or mechanical loading on the valve body.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What is different about clean steam safety valves?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Clean steam valves may require hygienic material, drainability, cleanability, surface finish control, calibration records and documentation for pharmaceutical, food, SIP or sterilization service.\"\r\n      }\r\n    }\r\n  ]\r\n}\r\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-79c6170c e-con-full e-flex cmsmasters-block-default e-con e-parent\" data-id=\"79c6170c\" 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-675f8195 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=\"675f8195\" 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<div class=\"elementor-element elementor-element-5c09a340 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"5c09a340\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-44316f8c e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"44316f8c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-227ec7c6 elementor-position-inline-start elementor-mobile-position-inline-start elementor-view-default cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-icon-box\" data-id=\"227ec7c6\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;cmsmasters-fade-in-left&quot;}\" data-widget_type=\"icon-box.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"cmsmsdemo-icon- cmsms-demo-icon-arrows-2\"><\/i>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tFEATURED SERIES\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d72942a elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"d72942a\" 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<h2 class=\"elementor-heading-title elementor-size-default\">Featured Safety Valve Series<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1a46bfa4 elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"1a46bfa4\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;cmsmasters-fade-in-right&quot;,&quot;_animation_tablet&quot;:&quot;cmsmasters-fade-in-up&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\">Explore selected ZOBAI safety valve series for high-pressure service, back pressure conditions, steam systems, hygienic process lines, and continuous protection applications. These featured models help buyers and engineers compare product directions across different service conditions.<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fc409f4 elementor-pagination-type-bullets elementor-arrows-position-inside elementor-pagination-position-outside cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-n-carousel\" data-id=\"fc409f4\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;carousel_items&quot;:[{&quot;slide_title&quot;:&quot;Slide #1&quot;,&quot;_id&quot;:&quot;01fe9a5&quot;},{&quot;slide_title&quot;:&quot;Slide #1&quot;,&quot;_id&quot;:&quot;945d82b&quot;},{&quot;slide_title&quot;:&quot;Slide #1&quot;,&quot;_id&quot;:&quot;8ec93bd&quot;},{&quot;slide_title&quot;:&quot;Slide #1&quot;,&quot;_id&quot;:&quot;ee987c2&quot;}],&quot;slides_to_show&quot;:&quot;4&quot;,&quot;slides_to_show_tablet&quot;:&quot;2&quot;,&quot;slides_to_show_mobile&quot;:&quot;1&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;autoplay_speed&quot;:5000,&quot;pause_on_hover&quot;:&quot;yes&quot;,&quot;pause_on_interaction&quot;:&quot;yes&quot;,&quot;infinite&quot;:&quot;yes&quot;,&quot;speed&quot;:500,&quot;offset_sides&quot;:&quot;none&quot;,&quot;arrows&quot;:&quot;yes&quot;,&quot;pagination&quot;:&quot;bullets&quot;,&quot;image_spacing_custom&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;image_spacing_custom_widescreen&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;image_spacing_custom_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;image_spacing_custom_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-carousel.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-carousel swiper\" role=\"region\" aria-roledescription=\"carousel\" aria-label=\"Carousel\" dir=\"ltr\">\n\t\t\t<div class=\"swiper-wrapper\" aria-live=\"off\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"1\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"1 de 1\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6928fbd1 e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"6928fbd1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-255f64f8 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"255f64f8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-fe7ecbf e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"fe7ecbf\" 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-48c58720 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"48c58720\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7c2c64ea cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"7c2c64ea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"850\" height=\"850\" src=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/a46y-pilot-operated-relief-valve-high-pressure-service.webp\" class=\"attachment-large size-large wp-image-51693\" alt=\"A46Y pilot-operated relief valve with external pilot tubing and flanged body\" srcset=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/a46y-pilot-operated-relief-valve-high-pressure-service.webp 850w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/a46y-pilot-operated-relief-valve-high-pressure-service-300x300.webp 300w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/a46y-pilot-operated-relief-valve-high-pressure-service-150x150.webp 150w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/a46y-pilot-operated-relief-valve-high-pressure-service-768x768.webp 768w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/a46y-pilot-operated-relief-valve-high-pressure-service-260x260.webp 260w\" sizes=\"(max-width: 850px) 100vw, 850px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-16a1124f e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"16a1124f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-f8bbf8f e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"f8bbf8f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3f58e9c5 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"3f58e9c5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ZBA46 Series Pilot Operated Safety Valves<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1e17eb84 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"1e17eb84\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7347568b cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"7347568b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;cms_transform_hover_type&quot;:&quot;element&quot;}\" 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:\/\/zobai.com\/es\/applications\/boilers-steam\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"cmsmsdemo-icon- cmsms-demo-icon-arrows-1\"><\/i>\t\t\t<\/span>\n\t\t\t\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\t\t<div class=\"elementor-element elementor-element-3f16bf6f cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"3f16bf6f\" 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>Pilot operated safety valves for higher-pressure service requiring tighter sealing and stable set pressure performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"2\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"1 de 1\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6a1f8cb4 e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"6a1f8cb4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-6b8ff363 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6b8ff363\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-5764ba2c e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"5764ba2c\" 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-723a5a22 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"723a5a22\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-73612fca cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"73612fca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"850\" height=\"850\" src=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/wa42y-bellows-balanced-full-lift-safety-valve-back-pressure.webp\" class=\"attachment-large size-large wp-image-51697\" alt=\"WA42Y bellows-balanced full-lift safety valve with flanged connections\" srcset=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/wa42y-bellows-balanced-full-lift-safety-valve-back-pressure.webp 850w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/wa42y-bellows-balanced-full-lift-safety-valve-back-pressure-300x300.webp 300w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/wa42y-bellows-balanced-full-lift-safety-valve-back-pressure-150x150.webp 150w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/wa42y-bellows-balanced-full-lift-safety-valve-back-pressure-768x768.webp 768w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/wa42y-bellows-balanced-full-lift-safety-valve-back-pressure-260x260.webp 260w\" sizes=\"(max-width: 850px) 100vw, 850px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-29102767 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"29102767\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7bcfd523 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"7bcfd523\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-23fff05c cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"23fff05c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ZBWA42 Series Bellows Balanced Safety Valves<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5bf242dd e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"5bf242dd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-282322b5 cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"282322b5\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;cms_transform_hover_type&quot;:&quot;element&quot;}\" 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:\/\/zobai.com\/es\/applications\/boilers-steam\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"cmsmsdemo-icon- cmsms-demo-icon-arrows-1\"><\/i>\t\t\t<\/span>\n\t\t\t\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\t\t<div class=\"elementor-element elementor-element-6adbf1f4 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"6adbf1f4\" 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>Bellows balanced safety valves for back pressure applications where stable performance is important.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"3\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"1 de 1\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1ab325ce e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"1ab325ce\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-76571e55 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"76571e55\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-182a4c77 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"182a4c77\" 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-41b2929f e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"41b2929f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-79b37c6e cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"79b37c6e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"850\" height=\"850\" src=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/a46y-pilot-operated-relief-valve-high-pressure-service.webp\" class=\"attachment-large size-large wp-image-51693\" alt=\"A46Y pilot-operated relief valve with external pilot tubing and flanged body\" srcset=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/a46y-pilot-operated-relief-valve-high-pressure-service.webp 850w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/a46y-pilot-operated-relief-valve-high-pressure-service-300x300.webp 300w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/a46y-pilot-operated-relief-valve-high-pressure-service-150x150.webp 150w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/a46y-pilot-operated-relief-valve-high-pressure-service-768x768.webp 768w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/a46y-pilot-operated-relief-valve-high-pressure-service-260x260.webp 260w\" sizes=\"(max-width: 850px) 100vw, 850px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7326c4e4 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"7326c4e4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-63751379 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"63751379\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-41d78e44 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"41d78e44\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ZBA68 Series High Temperature Steam Safety Valves<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-424ab318 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"424ab318\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2ca5147b cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"2ca5147b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;cms_transform_hover_type&quot;:&quot;element&quot;}\" 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:\/\/zobai.com\/es\/applications\/boilers-steam\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"cmsmsdemo-icon- cmsms-demo-icon-arrows-1\"><\/i>\t\t\t<\/span>\n\t\t\t\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\t\t<div class=\"elementor-element elementor-element-6164a0a8 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"6164a0a8\" 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>High temperature steam safety valves for boilers, steam lines, and other elevated-temperature systems.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"4\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"1 de 1\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-419185cf e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"419185cf\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-18199666 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"18199666\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-1798d0d1 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"1798d0d1\" 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-407a3695 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"407a3695\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1cfa1544 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"1cfa1544\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"850\" height=\"850\" src=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/svl488-stainless-steel-safety-valve-cleaning-system.webp\" class=\"attachment-large size-large wp-image-51695\" alt=\"SVL488 stainless steel safety valve for cleaning systems with sanitary clamp connection and lifting lever\" srcset=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/svl488-stainless-steel-safety-valve-cleaning-system.webp 850w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/svl488-stainless-steel-safety-valve-cleaning-system-300x300.webp 300w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/svl488-stainless-steel-safety-valve-cleaning-system-150x150.webp 150w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/svl488-stainless-steel-safety-valve-cleaning-system-768x768.webp 768w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/04\/svl488-stainless-steel-safety-valve-cleaning-system-260x260.webp 260w\" sizes=\"(max-width: 850px) 100vw, 850px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6ab4a588 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6ab4a588\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-5bcf97f4 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"5bcf97f4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-63c92b00 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"63c92b00\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">SVL488 Series Sanitary Safety Valves<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-689e574b e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"689e574b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-77b31313 cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"77b31313\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;cms_transform_hover_type&quot;:&quot;element&quot;}\" 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:\/\/zobai.com\/es\/applications\/boilers-steam\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"cmsmsdemo-icon- cmsms-demo-icon-arrows-1\"><\/i>\t\t\t<\/span>\n\t\t\t\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\t\t<div class=\"elementor-element elementor-element-1f542d39 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"1f542d39\" 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>Sanitary safety valves for hygienic process lines and cleaning systems requiring cleanable pressure protection.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-swiper-button elementor-swiper-button-prev\" role=\"button\" tabindex=\"0\" aria-label=\"Anterior\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-chevron-left\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M646 125C629 125 613 133 604 142L308 442C296 454 292 471 292 487 292 504 296 521 308 533L604 854C617 867 629 875 646 875 663 875 679 871 692 858 704 846 713 829 713 812 713 796 708 779 692 767L438 487 692 225C700 217 708 204 708 187 708 171 704 154 692 142 675 129 663 125 646 125Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t\t<div class=\"elementor-swiper-button elementor-swiper-button-next\" role=\"button\" tabindex=\"0\" aria-label=\"Pr\u00f3ximo\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-chevron-right\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M696 533C708 521 713 504 713 487 713 471 708 454 696 446L400 146C388 133 375 125 354 125 338 125 325 129 313 142 300 154 292 171 292 187 292 204 296 221 308 233L563 492 304 771C292 783 288 800 288 817 288 833 296 850 308 863 321 871 338 875 354 875 371 875 388 867 400 854L696 533Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t\t\t\t<div class=\"swiper-pagination\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Home Boiler &amp; Steam Safety Valves for Steam Generation and Pressure Relief Systems CONTACT SALES Boiler &#038; Steam Pressure Relief Boiler and Steam Safety Valves for Steam Generation, Headers and Process Steam Systems Boiler and steam safety valves protect steam boilers, steam drums, superheaters, reheaters, exhaust gas economizers, steam headers, PRDS stations, clean steam generators,&#8230;<\/p>","protected":false},"author":2,"featured_media":0,"parent":52780,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-53135","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/zobai.com\/es\/wp-json\/wp\/v2\/pages\/53135","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zobai.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/zobai.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/zobai.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zobai.com\/es\/wp-json\/wp\/v2\/comments?post=53135"}],"version-history":[{"count":4,"href":"https:\/\/zobai.com\/es\/wp-json\/wp\/v2\/pages\/53135\/revisions"}],"predecessor-version":[{"id":53140,"href":"https:\/\/zobai.com\/es\/wp-json\/wp\/v2\/pages\/53135\/revisions\/53140"}],"up":[{"embeddable":true,"href":"https:\/\/zobai.com\/es\/wp-json\/wp\/v2\/pages\/52780"}],"wp:attachment":[{"href":"https:\/\/zobai.com\/es\/wp-json\/wp\/v2\/media?parent=53135"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}