{"id":53107,"date":"2026-05-15T03:44:48","date_gmt":"2026-05-15T03:44:48","guid":{"rendered":"https:\/\/zobai.com\/?page_id=53107"},"modified":"2026-05-15T05:29:31","modified_gmt":"2026-05-15T05:29:31","slug":"lng-and-lpg","status":"publish","type":"page","link":"https:\/\/zobai.com\/fr\/applications\/lng-and-lpg\/","title":{"rendered":"GNL et GPL"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"53107\" class=\"elementor elementor-53107\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4474f453 e-con-full e-flex cmsmasters-bg-hide-none cmsmasters-bg-hide-none cmsmasters-block-default e-con e-parent\" data-id=\"4474f453\" 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-44366401 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"44366401\" 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-3d6589cc 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=\"3d6589cc\" 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-408d73e9 elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"408d73e9\" 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\">LNG and LPG Safety Valves for Cryogenic, Storage and Pressure Relief Systems<\/h1>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-195f95df e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"195f95df\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7268f443 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=\"7268f443\" 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\/fr\/?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-5efb5cb0 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"5efb5cb0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7b71ff7b e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"7b71ff7b\" 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-3e11298b 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=\"3e11298b\" 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-2baa4449 e-con-full e-flex cmsmasters-block-default e-con e-parent\" data-id=\"2baa4449\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-42520395 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-html\" data-id=\"42520395\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>\r\n  .zobai-lnglpg-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-warning: #fff4e5;\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-lnglpg-page * {\r\n    box-sizing: border-box;\r\n  }\r\n\r\n  .zobai-lnglpg-section {\r\n    max-width: 100%;\r\n    margin: 0 auto;\r\n    padding: 88px 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.zobai-lnglpg-section {\r\n      padding: 58px 18px;\r\n    }\r\n\r\n    .zobai-lnglpg-card,\r\n    .zobai-lnglpg-hero-panel,\r\n    .zobai-lnglpg-rfq,\r\n    .zobai-lnglpg-case {\r\n      padding: 26px 20px;\r\n      border-radius: 24px;\r\n    }\r\n\r\n    .zobai-lnglpg-flow-item {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .zobai-lnglpg-case-top {\r\n      flex-direction: column;\r\n    }\r\n\r\n    .zobai-lnglpg-case-data {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .zobai-lnglpg-rfq-grid {\r\n      grid-template-columns: 1fr;\r\n    }\r\n  }\r\n<\/style>\r\n\r\n<div class=\"zobai-lnglpg-page\">\r\n\r\n  <section class=\"zobai-lnglpg-section\">\r\n    <div class=\"zobai-lnglpg-hero-panel\">\r\n      <div class=\"zobai-lnglpg-eyebrow\">LNG & LPG Pressure Relief<\/div>\r\n      <h2>LNG and LPG Safety Valves for Cryogenic, Storage and Vaporization Systems<\/h2>\r\n      <p>\r\n        LNG and LPG safety valves protect cryogenic transfer lines, storage vessels, vaporizers, loading skids, pressure build-up systems, transfer pumps, vapor return lines, compressor packages and blocked-in liquid sections from overpressure. LNG service is dominated by cryogenic temperature, boil-off gas and trapped liquid expansion, while LPG service is dominated by vapor pressure, fire exposure, saturated liquid-vapor behavior and safe discharge routing.\r\n      <\/p>\r\n\r\n      <div class=\"zobai-lnglpg-kpi\">\r\n        <div class=\"zobai-lnglpg-kpi-item\">\r\n          <strong>Core Equipment<\/strong>\r\n          <span>Cryogenic lines, storage vessels, vaporizers, pumps and loading skids<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-lnglpg-kpi-item\">\r\n          <strong>Key Relief Cases<\/strong>\r\n          <span>Thermal expansion, boil-off gas, fire exposure and blocked outlet<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-lnglpg-kpi-item\">\r\n          <strong>Service Risks<\/strong>\r\n          <span>Cryogenic embrittlement, vapor generation, LPG fire case and vent safety<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-lnglpg-kpi-item\">\r\n          <strong>RFQ Output<\/strong>\r\n          <span>Datasheet, medium, set pressure, capacity basis and test documents<\/span>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-lnglpg-section zobai-lnglpg-section-soft\">\r\n    <div class=\"zobai-lnglpg-eyebrow\">Industry Applications<\/div>\r\n    <h2 class=\"zobai-lnglpg-title\">Where Safety Valves Are Used in LNG and LPG Systems<\/h2>\r\n    <p class=\"zobai-lnglpg-lead\">\r\n      LNG and LPG applications are both hydrocarbon pressure relief services, but they should not be specified as the same valve duty. LNG is a cryogenic liquid service near -162\u00b0C, while LPG usually involves propane, butane or mixed LPG stored under pressure as a saturated liquid-vapor system.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-lnglpg-grid\">\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-4\">\r\n        <h3>LNG Storage and BOG Systems<\/h3>\r\n        <p>\r\n          Used on LNG storage-related packages, boil-off gas lines, pressure build-up systems, vapor handling skids and gas send-out lines. Key checks include low-temperature material, vapor generation, blocked outlet and safe venting.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-4\">\r\n        <h3>LNG Transfer Lines<\/h3>\r\n        <p>\r\n          Used on liquid transfer lines, loading arms, unloading lines, cold boxes and blocked-in cryogenic sections. Thermal expansion of trapped liquid is often the most important relief case.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-4\">\r\n        <h3>LNG Vaporizers<\/h3>\r\n        <p>\r\n          Used on ambient vaporizers, water bath vaporizers, steam-heated vaporizers and send-out skids. Relief review should consider heat input, outlet blockage, downstream regulator failure and vapor generation.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-4\">\r\n        <h3>LPG Bullets and Spheres<\/h3>\r\n        <p>\r\n          Used on propane, butane and LPG mixture storage vessels. Fire exposure, vapor pressure, filling condition, liquid expansion and safe discharge direction are central to selection.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-4\">\r\n        <h3>LPG Loading and Unloading Skids<\/h3>\r\n        <p>\r\n          Used on truck loading skids, railcar loading, transfer pumps, vapor return lines and metering skids. Relief cases include pump deadhead, thermal expansion, blocked outlet and hose isolation.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-4\">\r\n        <h3>LPG Vaporizers and Fuel Gas Systems<\/h3>\r\n        <p>\r\n          Used on LPG vaporizers, pressure reduction stations, fuel gas supply skids and burner trains. The valve must be matched to vaporizer capacity, regulator failure and downstream pressure limits.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-lnglpg-section\">\r\n    <div class=\"zobai-lnglpg-eyebrow\">Relief Case Analysis<\/div>\r\n    <h2 class=\"zobai-lnglpg-title\">LNG and LPG PSV Selection Starts With the Overpressure Cause<\/h2>\r\n    <p class=\"zobai-lnglpg-lead\">\r\n      A safety valve for LNG or LPG should be selected only after the credible overpressure scenario is defined. Cryogenic liquid expansion, vapor generation, fire exposure and blocked outlet can create very different required relieving capacities.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-lnglpg-flow\">\r\n      <div class=\"zobai-lnglpg-flow-item\">\r\n        <div class=\"zobai-lnglpg-flow-num\">01<\/div>\r\n        <div>\r\n          <h3>Trapped Cryogenic Liquid Expansion<\/h3>\r\n          <p>\r\n            LNG trapped between closed valves can warm up and expand. Even a short blocked-in liquid section can produce a severe pressure rise. Thermal relief valves should be installed where cryogenic liquid can be isolated.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-flow-item\">\r\n        <div class=\"zobai-lnglpg-flow-num\">02<\/div>\r\n        <div>\r\n          <h3>Boil-Off Gas and Heat Leak<\/h3>\r\n          <p>\r\n            LNG storage and transfer systems always receive heat from the environment. Boil-off gas generation can increase pressure when vapor handling, venting or send-out systems are restricted.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-flow-item\">\r\n        <div class=\"zobai-lnglpg-flow-num\">03<\/div>\r\n        <div>\r\n          <h3>Vaporizer Outlet Blockage<\/h3>\r\n          <p>\r\n            LNG or LPG vaporizers can continue generating vapor when downstream flow is restricted. Relief review should include vaporizer duty, heat input, outlet pressure limit and downstream regulator arrangement.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-flow-item\">\r\n        <div class=\"zobai-lnglpg-flow-num\">04<\/div>\r\n        <div>\r\n          <h3>LPG Fire Exposure<\/h3>\r\n          <p>\r\n            LPG vessels contain saturated liquid-vapor hydrocarbon. External fire exposure can rapidly increase vapor generation and vessel pressure. Fire-case relief capacity and discharge direction must be reviewed together.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-flow-item\">\r\n        <div class=\"zobai-lnglpg-flow-num\">05<\/div>\r\n        <div>\r\n          <h3>Pump Deadhead or Blocked Outlet<\/h3>\r\n          <p>\r\n            LPG transfer pumps, LNG send-out pumps and loading skids can overpressure lines if downstream valves are closed. Pump curve, maximum discharge pressure and protected line rating should be checked.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-flow-item\">\r\n        <div class=\"zobai-lnglpg-flow-num\">06<\/div>\r\n        <div>\r\n          <h3>Regulator Failure or Pressure Reduction Upset<\/h3>\r\n          <p>\r\n            LPG vaporizers, fuel gas skids and LNG send-out systems often include regulators. Regulator failure can expose downstream piping or users to higher pressure than intended.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-lnglpg-section zobai-lnglpg-section-soft\">\r\n    <div class=\"zobai-lnglpg-eyebrow\">Application Case Data<\/div>\r\n    <h2 class=\"zobai-lnglpg-title\">LNG and LPG Safety Valve Application Cases with Typical RFQ Data<\/h2>\r\n    <p class=\"zobai-lnglpg-lead\">\r\n      These cases show how LNG and LPG safety valve requirements are commonly described before model selection. Final sizing must be confirmed by project datasheet, applicable code, verified relief calculation and site safety review.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-lnglpg-grid\">\r\n      <div class=\"zobai-lnglpg-case zobai-lnglpg-span-6\">\r\n        <div class=\"zobai-lnglpg-case-top\">\r\n          <h3>Case 1: LNG Transfer Line Thermal Relief Valve<\/h3>\r\n          <span class=\"zobai-lnglpg-case-tag\">Cryogenic Thermal Relief<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-lnglpg-case-data\">\r\n          <div><b>Protected equipment:<\/b> Blocked-in LNG transfer line<\/div>\r\n          <div><b>Medium:<\/b> Liquefied natural gas<\/div>\r\n          <div><b>Service temperature:<\/b> Approx. -162\u00b0C \/ -260\u00b0F<\/div>\r\n          <div><b>Relief cause:<\/b> Trapped liquid expansion<\/div>\r\n          <div><b>Set pressure:<\/b> Below protected line design limit<\/div>\r\n          <div><b>Discharge:<\/b> Safe vent, return or recovery system<\/div>\r\n          <div><b>Material focus:<\/b> Low-temperature toughness<\/div>\r\n          <div><b>Key review:<\/b> Cryogenic material, outlet icing, discharge routing and seat tightness<\/div>\r\n        <\/div>\r\n        <p>\r\n          LNG thermal relief valves are often compact, but the service is severe. The valve must remain suitable at cryogenic temperature and should discharge to a safe location where cold vapor, frost or flammable gas accumulation will not create secondary risk.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-case zobai-lnglpg-span-6\">\r\n        <div class=\"zobai-lnglpg-case-top\">\r\n          <h3>Case 2: LNG Vaporizer Outlet Safety Valve<\/h3>\r\n          <span class=\"zobai-lnglpg-case-tag\">Vaporizer Protection<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-lnglpg-case-data\">\r\n          <div><b>Protected equipment:<\/b> LNG vaporizer outlet line<\/div>\r\n          <div><b>Medium:<\/b> Natural gas after vaporization<\/div>\r\n          <div><b>Normal pressure:<\/b> 8\u201320 barg typical project range<\/div>\r\n          <div><b>Set pressure:<\/b> Project downstream design value<\/div>\r\n          <div><b>Relieving temperature:<\/b> Cold gas to ambient, depending on vaporizer<\/div>\r\n          <div><b>Relief cause:<\/b> Outlet blockage or regulator failure<\/div>\r\n          <div><b>Discharge:<\/b> Safe vent or flare system<\/div>\r\n          <div><b>Key review:<\/b> Vaporizer duty, gas capacity, low-temperature transition and vent location<\/div>\r\n        <\/div>\r\n        <p>\r\n          Vaporizer outlet valves should be selected from vaporizer maximum gas generation and downstream pressure boundary. The valve may see cold gas during startup or upset, so temperature range and material suitability should be confirmed.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-case zobai-lnglpg-span-6\">\r\n        <div class=\"zobai-lnglpg-case-top\">\r\n          <h3>Case 3: LNG Boil-Off Gas Line PSV<\/h3>\r\n          <span class=\"zobai-lnglpg-case-tag\">BOG Pressure Control<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-lnglpg-case-data\">\r\n          <div><b>Protected equipment:<\/b> BOG header or compressor suction drum<\/div>\r\n          <div><b>Medium:<\/b> Methane-rich boil-off gas<\/div>\r\n          <div><b>Normal pressure:<\/b> Low-pressure terminal or package value<\/div>\r\n          <div><b>Set pressure:<\/b> Equipment design pressure basis<\/div>\r\n          <div><b>Relief cause:<\/b> Compressor trip or blocked BOG outlet<\/div>\r\n          <div><b>Relieving temperature:<\/b> Cold vapor, site-specific<\/div>\r\n          <div><b>Discharge:<\/b> Flare, vent or recovery system<\/div>\r\n          <div><b>Key review:<\/b> Low-temperature gas, capacity, back pressure and safe flammable discharge<\/div>\r\n        <\/div>\r\n        <p>\r\n          BOG relief should not be treated as ordinary natural gas service without checking temperature, operating pressure and discharge system. Back pressure and vent routing are critical when the valve discharges into a flare or recovery system.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-case zobai-lnglpg-span-6\">\r\n        <div class=\"zobai-lnglpg-case-top\">\r\n          <h3>Case 4: LPG Storage Bullet Fire Case PSV<\/h3>\r\n          <span class=\"zobai-lnglpg-case-tag\">Fire Exposure<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-lnglpg-case-data\">\r\n          <div><b>Protected equipment:<\/b> LPG bullet or storage vessel<\/div>\r\n          <div><b>Medium:<\/b> Propane \/ butane mixture<\/div>\r\n          <div><b>Normal condition:<\/b> Saturated liquid-vapor service<\/div>\r\n          <div><b>Set pressure:<\/b> Vessel datasheet value<\/div>\r\n          <div><b>Relief cause:<\/b> External fire exposure<\/div>\r\n          <div><b>Required data:<\/b> Wetted surface and fluid composition<\/div>\r\n          <div><b>Discharge:<\/b> Elevated safe discharge or flare system<\/div>\r\n          <div><b>Key review:<\/b> Fire-case capacity, vapor pressure, reaction force and discharge direction<\/div>\r\n        <\/div>\r\n        <p>\r\n          LPG storage relief is usually governed by fire exposure or vapor pressure rise. The RFQ should include storage condition, composition, set pressure, required capacity basis, discharge direction and documentation requirements.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-case zobai-lnglpg-span-6\">\r\n        <div class=\"zobai-lnglpg-case-top\">\r\n          <h3>Case 5: LPG Transfer Pump Discharge Relief<\/h3>\r\n          <span class=\"zobai-lnglpg-case-tag\">Pump Deadhead<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-lnglpg-case-data\">\r\n          <div><b>Protected equipment:<\/b> LPG transfer pump discharge line<\/div>\r\n          <div><b>Medium:<\/b> Propane, butane or mixed LPG<\/div>\r\n          <div><b>Normal pressure:<\/b> Pump and storage condition dependent<\/div>\r\n          <div><b>Set pressure:<\/b> Below protected line design limit<\/div>\r\n          <div><b>Relief cause:<\/b> Deadhead, blocked outlet or closed valve<\/div>\r\n          <div><b>Relieving temperature:<\/b> Ambient saturated liquid service<\/div>\r\n          <div><b>Discharge:<\/b> Return to tank, suction or safe collection point<\/div>\r\n          <div><b>Key review:<\/b> Pump curve, liquid relief, outlet routing and flashing risk<\/div>\r\n        <\/div>\r\n        <p>\r\n          LPG transfer relief should avoid discharging flammable liquid or vapor to an unsafe area. Return routing, flashing behavior and pump deadhead pressure must be reviewed before selecting the valve.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-case zobai-lnglpg-span-6\">\r\n        <div class=\"zobai-lnglpg-case-top\">\r\n          <h3>Case 6: LPG Vaporizer Outlet Safety Valve<\/h3>\r\n          <span class=\"zobai-lnglpg-case-tag\">Fuel Gas Supply<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-lnglpg-case-data\">\r\n          <div><b>Protected equipment:<\/b> LPG vaporizer outlet and fuel gas skid<\/div>\r\n          <div><b>Medium:<\/b> LPG vapor \/ propane vapor<\/div>\r\n          <div><b>Normal pressure:<\/b> Downstream fuel gas system value<\/div>\r\n          <div><b>Set pressure:<\/b> Downstream protected equipment limit<\/div>\r\n          <div><b>Relief cause:<\/b> Regulator failure or outlet blockage<\/div>\r\n          <div><b>Relieving temperature:<\/b> Vaporizer outlet temperature<\/div>\r\n          <div><b>Discharge:<\/b> Safe outdoor vent or flare<\/div>\r\n          <div><b>Key review:<\/b> Vaporizer capacity, regulator failure, gas capacity and safe venting<\/div>\r\n        <\/div>\r\n        <p>\r\n          LPG vaporizer outlet PSVs should be based on maximum vaporizer capacity and downstream pressure limits. The valve should protect low-pressure users from regulator failure and blocked outlet cases.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-lnglpg-section\">\r\n    <div class=\"zobai-lnglpg-eyebrow\">Service Data Matrix<\/div>\r\n    <h2 class=\"zobai-lnglpg-title\">LNG and LPG Safety Valve Data Matrix<\/h2>\r\n\r\n    <div class=\"zobai-lnglpg-table-wrap\">\r\n      <table class=\"zobai-lnglpg-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Service<\/th>\r\n            <th>Typical Medium<\/th>\r\n            <th>Temperature \/ Phase Concern<\/th>\r\n            <th>Common Relief Cause<\/th>\r\n            <th>Required Engineering Check<\/th>\r\n            <th>Risk if Missed<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td>LNG transfer line<\/td>\r\n            <td>Liquefied natural gas<\/td>\r\n            <td>Approx. -162\u00b0C \/ -260\u00b0F cryogenic liquid<\/td>\r\n            <td>Trapped liquid thermal expansion<\/td>\r\n            <td>Low-temperature material, seat behavior, discharge route and outlet icing<\/td>\r\n            <td>Line rupture, embrittlement or unsafe cold vapor release<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>LNG vaporizer<\/td>\r\n            <td>LNG and natural gas vapor<\/td>\r\n            <td>Cryogenic liquid to gas transition<\/td>\r\n            <td>Outlet blockage, regulator failure, excessive heat input<\/td>\r\n            <td>Vaporizer capacity, temperature range, downstream pressure limit<\/td>\r\n            <td>Undersized gas relief or wrong low-temperature material<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>BOG system<\/td>\r\n            <td>Methane-rich boil-off gas<\/td>\r\n            <td>Cold flammable vapor<\/td>\r\n            <td>Compressor trip, blocked outlet, heat leak<\/td>\r\n            <td>Gas capacity, low-temperature rating, back pressure and vent safety<\/td>\r\n            <td>Pressure rise, flammable gas accumulation or unstable relief<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>LPG storage<\/td>\r\n            <td>Propane, butane, LPG mixture<\/td>\r\n            <td>Saturated liquid-vapor hydrocarbon<\/td>\r\n            <td>Fire exposure, heat input, overfilling<\/td>\r\n            <td>Fire-case capacity, vapor pressure, discharge direction and certification documents<\/td>\r\n            <td>Undersized fire-case relief or unsafe flammable discharge<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>LPG transfer<\/td>\r\n            <td>Liquid LPG<\/td>\r\n            <td>Pressurized liquid with flashing potential<\/td>\r\n            <td>Pump deadhead, blocked outlet, trapped liquid expansion<\/td>\r\n            <td>Pump curve, set pressure, return routing and flashing behavior<\/td>\r\n            <td>Line overpressure or uncontrolled flammable release<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>LPG vaporizer<\/td>\r\n            <td>LPG vapor \/ propane vapor<\/td>\r\n            <td>Liquid-to-vapor supply system<\/td>\r\n            <td>Regulator failure, outlet blockage, excess vapor generation<\/td>\r\n            <td>Vaporizer capacity, downstream pressure boundary and safe venting<\/td>\r\n            <td>Downstream equipment overpressure or burner train risk<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-lnglpg-section zobai-lnglpg-section-soft\">\r\n    <div class=\"zobai-lnglpg-eyebrow\">Selection Framework<\/div>\r\n    <h2 class=\"zobai-lnglpg-title\">How to Specify LNG and LPG Safety Valves Correctly<\/h2>\r\n\r\n    <div class=\"zobai-lnglpg-grid\">\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-6\">\r\n        <h3>1. Identify LNG or LPG service clearly<\/h3>\r\n        <p>\r\n          State whether the valve is for LNG, BOG, natural gas vapor, propane, butane or LPG mixture. LNG requires cryogenic material review; LPG requires vapor pressure, fire case and saturated liquid-vapor behavior review.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-6\">\r\n        <h3>2. Confirm fluid phase at relieving condition<\/h3>\r\n        <p>\r\n          The valve may relieve cryogenic liquid, cold gas, LPG liquid, LPG vapor, flashing liquid or two-phase flow. Phase condition affects sizing, discharge reaction, material and outlet arrangement.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-6\">\r\n        <h3>3. Define the protected equipment<\/h3>\r\n        <p>\r\n          Confirm whether the valve protects a storage vessel, transfer line, vaporizer, pump discharge, loading skid, BOG header, fuel gas skid or blocked-in liquid section. Equipment design pressure defines the set pressure boundary.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-6\">\r\n        <h3>4. Define the governing relief scenario<\/h3>\r\n        <p>\r\n          LNG relief may be governed by trapped liquid expansion, heat leak or BOG system upset. LPG relief may be governed by fire exposure, pump deadhead, overfilling, regulator failure or blocked outlet.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-6\">\r\n        <h3>5. Review discharge destination<\/h3>\r\n        <p>\r\n          LNG and LPG relief streams are flammable. Discharge should be routed to a safe vent, flare, recovery line or return system based on site design. Vent location, cold vapor dispersion, fire exposure and operator safety must be checked.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-6\">\r\n        <h3>6. Confirm testing and documents<\/h3>\r\n        <p>\r\n          LNG and LPG projects commonly require datasheets, set pressure calibration, pressure test records, seat tightness test, material certificates, low-temperature material confirmation, nameplate marking and inspection documents.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-lnglpg-section\">\r\n    <div class=\"zobai-lnglpg-eyebrow\">Installation & Discharge<\/div>\r\n    <h2 class=\"zobai-lnglpg-title\">LNG and LPG Safety Valves Must Be Reviewed With Venting, Return and Flare Systems<\/h2>\r\n\r\n    <div class=\"zobai-lnglpg-grid\">\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-7\">\r\n        <h3>Why the discharge route is part of valve selection<\/h3>\r\n        <p>\r\n          LNG and LPG relief streams are flammable and can form hazardous vapor clouds if released improperly. LNG relief can also create extremely cold vapor, frost and low-temperature exposure. LPG relief may flash from liquid to vapor and create high discharge reaction force, noise and fire risk.\r\n        <\/p>\r\n        <p>\r\n          Safety valve selection should include inlet pressure loss, outlet back pressure, vent height, outlet direction, drainage, cold exposure, flame-safe location, pipe support and maintenance access. For flare or closed systems, the back pressure must be reviewed before valve configuration is finalized.\r\n        <\/p>\r\n        <div class=\"zobai-lnglpg-chip-row\">\r\n          <span class=\"zobai-lnglpg-chip\">Cryogenic Venting<\/span>\r\n          <span class=\"zobai-lnglpg-chip\">Flammable Vapor<\/span>\r\n          <span class=\"zobai-lnglpg-chip\">LPG Fire Case<\/span>\r\n          <span class=\"zobai-lnglpg-chip\">BOG Relief<\/span>\r\n          <span class=\"zobai-lnglpg-chip\">Back Pressure<\/span>\r\n          <span class=\"zobai-lnglpg-chip\">Thermal Relief<\/span>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-5\">\r\n        <h3>Field installation checks<\/h3>\r\n        <ul class=\"zobai-lnglpg-list\">\r\n          <li>Install thermal relief where LNG or LPG liquid can be blocked in.<\/li>\r\n          <li>Confirm low-temperature material for LNG-contacted pressure parts.<\/li>\r\n          <li>Route LNG and LPG discharge to a safe vent, flare, return or recovery system.<\/li>\r\n          <li>Check outlet back pressure when connected to flare or closed discharge headers.<\/li>\r\n          <li>Avoid cold vapor discharge toward personnel, instruments or brittle materials.<\/li>\r\n          <li>Support outlet piping without loading the valve body.<\/li>\r\n          <li>Provide access for inspection, recalibration and safe valve replacement.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-lnglpg-section zobai-lnglpg-section-soft\">\r\n    <div class=\"zobai-lnglpg-eyebrow\">Standards & Documentation<\/div>\r\n    <h2 class=\"zobai-lnglpg-title\">Standards and Documents to Confirm Before Ordering<\/h2>\r\n\r\n    <div class=\"zobai-lnglpg-grid\">\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-6\">\r\n        <h3>Common standard references<\/h3>\r\n        <p>\r\n          LNG and LPG pressure relief specifications may reference API, ASME, ISO, EN, GB, NFPA or owner standards depending on the facility type, country, pressure equipment, storage arrangement and inspection requirement. The applicable standard should be confirmed before quotation.\r\n        <\/p>\r\n        <ul class=\"zobai-lnglpg-list\">\r\n          <li><a href=\"\/standards\/api-520\/\">API 520<\/a> for pressure-relieving device sizing and selection reference where required by the project.<\/li>\r\n          <li><a href=\"\/standards\/api-521\/\">API 521<\/a> for pressure-relieving and depressuring system review in LNG and hydrocarbon facilities.<\/li>\r\n          <li><a href=\"\/standards\/api-526\/\">API 526<\/a> when flanged steel pressure relief valve dimensions and ratings are specified.<\/li>\r\n          <li><a href=\"\/standards\/api-527\/\">API 527<\/a> when seat tightness testing is required.<\/li>\r\n          <li>ASME BPVC or local pressure vessel requirements for storage vessels and pressure equipment.<\/li>\r\n          <li>ISO 4126 references when project specifications require excessive pressure protection safety valve standards.<\/li>\r\n          <li>Owner specifications for cryogenic material, LPG storage, fire-case relief and inspection documents.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-6\">\r\n        <h3>Typical document package<\/h3>\r\n        <p>\r\n          Documentation should be agreed before manufacturing, especially for LNG cryogenic service, LPG storage, vaporizers, loading skids, tank protection and flare-connected applications.\r\n        <\/p>\r\n        <ul class=\"zobai-lnglpg-list\">\r\n          <li>Technical datasheet with model, size, orifice, set pressure and connection.<\/li>\r\n          <li>Sizing calculation or certified relieving capacity confirmation.<\/li>\r\n          <li>Set pressure calibration record.<\/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>Low-temperature material confirmation for LNG service when required.<\/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        <\/ul>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-lnglpg-section\">\r\n    <div class=\"zobai-lnglpg-eyebrow\">RFQ Checklist<\/div>\r\n    <h2 class=\"zobai-lnglpg-title\">LNG and LPG Safety Valve RFQ Data Checklist<\/h2>\r\n\r\n    <div class=\"zobai-lnglpg-table-wrap\">\r\n      <table class=\"zobai-lnglpg-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>Service type<\/td>\r\n            <td>Separates cryogenic LNG duty from saturated LPG duty.<\/td>\r\n            <td>LNG, BOG, natural gas vapor, propane, butane, mixed LPG<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Fluid phase<\/td>\r\n            <td>Affects sizing, materials and discharge behavior.<\/td>\r\n            <td>Cryogenic liquid, cold gas, LPG liquid, LPG vapor, flashing liquid<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Protected equipment<\/td>\r\n            <td>Defines pressure boundary and overpressure source.<\/td>\r\n            <td>Storage vessel, transfer line, vaporizer, pump discharge, loading skid<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Relief scenario<\/td>\r\n            <td>Determines required relieving capacity.<\/td>\r\n            <td>Thermal expansion, fire case, blocked outlet, vaporizer outlet blockage<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Set pressure<\/td>\r\n            <td>Defines valve opening pressure.<\/td>\r\n            <td>Project datasheet value, vessel MAWP-based value, line protection value<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Operating pressure<\/td>\r\n            <td>Confirms operating margin and leakage risk.<\/td>\r\n            <td>Normal and maximum operating pressure<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Required relieving capacity<\/td>\r\n            <td>Confirms whether the selected valve can protect the system.<\/td>\r\n            <td>kg\/h, Nm\u00b3\/h, SCFM, t\/h, GPM, L\/min<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Relieving temperature<\/td>\r\n            <td>Affects material, seals and pressure rating.<\/td>\r\n            <td>-162\u00b0C LNG, cold gas, ambient LPG, elevated vaporizer outlet<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Back pressure<\/td>\r\n            <td>Influences valve capacity and stability.<\/td>\r\n            <td>Atmospheric vent, flare header, recovery system, return line<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Material requirement<\/td>\r\n            <td>Prevents embrittlement, leakage and compatibility failure.<\/td>\r\n            <td>Low-temperature stainless steel, carbon steel, stainless steel, special trim<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Connection and rating<\/td>\r\n            <td>Ensures mechanical compatibility with piping and equipment.<\/td>\r\n            <td>RF flange, RTJ flange, NPT, BW, Class 150\u20132500<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Required documents<\/td>\r\n            <td>Avoids delays after purchase order.<\/td>\r\n            <td>Datasheet, drawing, MTC, calibration report, pressure test, seat tightness report<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <p class=\"zobai-lnglpg-note\">\r\n      Final selection must be confirmed by project datasheet, protected equipment design pressure, fluid properties, applicable code, verified sizing basis and engineering review.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-lnglpg-section zobai-lnglpg-section-soft\">\r\n    <div class=\"zobai-lnglpg-eyebrow\">Selection Errors<\/div>\r\n    <h2 class=\"zobai-lnglpg-title\">Common LNG and LPG Safety Valve Selection Mistakes<\/h2>\r\n\r\n    <div class=\"zobai-lnglpg-grid\">\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-4\">\r\n        <h3>Treating LNG as normal natural gas<\/h3>\r\n        <p>\r\n          LNG service requires cryogenic material review and low-temperature sealing consideration. A valve suitable for ambient natural gas may not be suitable for LNG-contacted parts.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-4\">\r\n        <h3>Missing blocked-in liquid relief<\/h3>\r\n        <p>\r\n          LNG or LPG liquid trapped between closed valves can overpressure as temperature changes. Thermal relief should be reviewed for every isolated liquid section.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-4\">\r\n        <h3>Underestimating LPG fire-case capacity<\/h3>\r\n        <p>\r\n          LPG storage vessels may require significant relief capacity during external fire exposure. Fire case should be reviewed from storage geometry and fluid condition, not guessed from nozzle size.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-4\">\r\n        <h3>Ignoring flare or vent back pressure<\/h3>\r\n        <p>\r\n          Closed discharge, flare or recovery systems can create back pressure that affects capacity and stability. Back pressure should be reviewed before valve configuration is selected.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-4\">\r\n        <h3>Routing flammable vapor to unsafe areas<\/h3>\r\n        <p>\r\n          LNG and LPG relief can form flammable vapor clouds. Discharge should be routed to a safe vent, flare, return or recovery system according to site requirements.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-card zobai-lnglpg-span-4\">\r\n        <h3>Replacing by pressure rating only<\/h3>\r\n        <p>\r\n          Replacement should confirm service type, phase, set pressure, capacity, material, temperature, discharge arrangement, seat tightness and documentation requirements.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-lnglpg-section\">\r\n    <div class=\"zobai-lnglpg-eyebrow\">Related Engineering Resources<\/div>\r\n    <h2 class=\"zobai-lnglpg-title\">Continue Your LNG and LPG Pressure Relief Review<\/h2>\r\n    <p class=\"zobai-lnglpg-lead\">\r\n      These related pages help move from LNG and LPG application requirements to detailed safety valve selection, sizing, service-condition review and standard confirmation.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-lnglpg-link-grid\">\r\n      <a class=\"zobai-lnglpg-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-lnglpg-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-lnglpg-link-card\" href=\"\/applications\/cryogenic-service\/\">\r\n        <strong>Cryogenic Safety Valves<\/strong>\r\n        <span>For LNG, liquid nitrogen, liquid oxygen, low-temperature vapor and blocked-in cryogenic liquid service.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-lnglpg-link-card\" href=\"\/medium\/lng\/\">\r\n        <strong>LNG Safety Valves<\/strong>\r\n        <span>Medium-specific review for LNG transfer lines, vaporizers, BOG systems and cryogenic storage packages.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-lnglpg-link-card\" href=\"\/medium\/lpg\/\">\r\n        <strong>LPG Safety Valves<\/strong>\r\n        <span>For propane, butane, LPG storage, loading skids, vaporizers and fire-case relief applications.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-lnglpg-link-card\" href=\"\/applications\/high-back-pressure\/\">\r\n        <strong>High Back Pressure Service<\/strong>\r\n        <span>Important for flare headers, closed vent systems, return systems and recovery discharge conditions.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-lnglpg-link-card\" href=\"\/equipment\/pressure-vessels\/\">\r\n        <strong>Pressure Vessel Safety Valves<\/strong>\r\n        <span>For LNG storage packages, LPG bullets, spheres, vapor drums and pressure equipment protection.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-lnglpg-link-card\" href=\"\/equipment\/heat-exchangers\/\">\r\n        <strong>Vaporizer and Heat Exchanger Protection<\/strong>\r\n        <span>For vaporizer outlet blockage, tube rupture, heat input and downstream pressure protection.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-lnglpg-link-card\" href=\"\/standards\/api-521\/\">\r\n        <strong>API 521 Relief System Review<\/strong>\r\n        <span>For pressure-relieving and depressuring system context in LNG and hydrocarbon facilities.<\/span>\r\n      <\/a>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-lnglpg-section zobai-lnglpg-section-soft\">\r\n    <div class=\"zobai-lnglpg-eyebrow\">FAQ<\/div>\r\n    <h2 class=\"zobai-lnglpg-title\">LNG and LPG Safety Valve FAQ<\/h2>\r\n\r\n    <div class=\"zobai-lnglpg-accordion\" data-zobai-lnglpg-accordion>\r\n      <div class=\"zobai-lnglpg-acc-item is-open\">\r\n        <button class=\"zobai-lnglpg-acc-btn\" type=\"button\">What is the biggest difference between LNG and LPG safety valve selection? <span>+<\/span><\/button>\r\n        <div class=\"zobai-lnglpg-acc-body\">\r\n          LNG selection is dominated by cryogenic temperature, low-temperature materials, boil-off gas and trapped liquid expansion. LPG selection is dominated by saturated liquid-vapor behavior, vapor pressure, fire exposure, pump deadhead and flammable discharge routing.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-acc-item\">\r\n        <button class=\"zobai-lnglpg-acc-btn\" type=\"button\">Why does LNG service require low-temperature material review? <span>+<\/span><\/button>\r\n        <div class=\"zobai-lnglpg-acc-body\">\r\n          LNG is handled at cryogenic temperature. Pressure-retaining parts, trim, seals and related components must remain suitable under low-temperature conditions to avoid embrittlement, leakage or loss of sealing performance.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-acc-item\">\r\n        <button class=\"zobai-lnglpg-acc-btn\" type=\"button\">Why is thermal relief important for LNG and LPG transfer lines? <span>+<\/span><\/button>\r\n        <div class=\"zobai-lnglpg-acc-body\">\r\n          Liquid trapped between closed valves can expand as temperature changes. LNG or LPG blocked-in liquid sections can generate high pressure, so thermal relief should be reviewed wherever liquid can be isolated.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-acc-item\">\r\n        <button class=\"zobai-lnglpg-acc-btn\" type=\"button\">What data is required for an LNG or LPG safety valve quotation? <span>+<\/span><\/button>\r\n        <div class=\"zobai-lnglpg-acc-body\">\r\n          Provide service type, fluid phase, protected equipment, relief scenario, set pressure, operating pressure, required relieving capacity, relieving temperature, back pressure, material requirement, connection and required documents.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-acc-item\">\r\n        <button class=\"zobai-lnglpg-acc-btn\" type=\"button\">Can one valve design be used for both LNG and LPG service? <span>+<\/span><\/button>\r\n        <div class=\"zobai-lnglpg-acc-body\">\r\n          Not automatically. LNG requires cryogenic suitability and low-temperature review, while LPG requires vapor pressure, fire-case relief and flammable hydrocarbon discharge review. Final valve selection should be based on the actual datasheet.\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-lnglpg-section\">\r\n    <div class=\"zobai-lnglpg-rfq\">\r\n      <div>\r\n        <div class=\"zobai-lnglpg-eyebrow\">Engineering RFQ Support<\/div>\r\n        <h2>Prepare a Complete LNG or LPG PSV Datasheet Before Quotation<\/h2>\r\n        <p>\r\n          Send the service type, phase, protected equipment, relief scenario, set pressure, operating pressure, required capacity, temperature, back pressure, material requirement, connection standard and required documents. A complete datasheet helps avoid unsafe assumptions and speeds up engineering review.\r\n        <\/p>\r\n        <div class=\"zobai-lnglpg-btn-row\">\r\n          <a class=\"zobai-lnglpg-btn zobai-lnglpg-btn-primary\" href=\"\/contact\/\">Request Engineering Quote<\/a>\r\n          <a class=\"zobai-lnglpg-btn zobai-lnglpg-btn-secondary\" href=\"\/ask-an-engineer\/\">Ask an Engineer<\/a>\r\n          <a class=\"zobai-lnglpg-btn zobai-lnglpg-btn-secondary\" href=\"\/catalog-pdf\/\">Download Catalog PDF<\/a>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-lnglpg-rfq-box\">\r\n        <h3>Minimum RFQ data<\/h3>\r\n        <div class=\"zobai-lnglpg-rfq-grid\">\r\n          <div class=\"zobai-lnglpg-rfq-item\">Service Type<\/div>\r\n          <div class=\"zobai-lnglpg-rfq-item\">Fluid Phase<\/div>\r\n          <div class=\"zobai-lnglpg-rfq-item\">Protected Equipment<\/div>\r\n          <div class=\"zobai-lnglpg-rfq-item\">Relief Scenario<\/div>\r\n          <div class=\"zobai-lnglpg-rfq-item\">Set Pressure<\/div>\r\n          <div class=\"zobai-lnglpg-rfq-item\">Operating Pressure<\/div>\r\n          <div class=\"zobai-lnglpg-rfq-item\">Required Capacity<\/div>\r\n          <div class=\"zobai-lnglpg-rfq-item\">Temperature<\/div>\r\n          <div class=\"zobai-lnglpg-rfq-item\">Back Pressure<\/div>\r\n          <div class=\"zobai-lnglpg-rfq-item\">Material<\/div>\r\n          <div class=\"zobai-lnglpg-rfq-item\">Connection<\/div>\r\n          <div class=\"zobai-lnglpg-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-lnglpg-accordion]');\r\n    accordions.forEach(function (accordion) {\r\n      var items = accordion.querySelectorAll('.zobai-lnglpg-acc-item');\r\n\r\n      items.forEach(function (item) {\r\n        var button = item.querySelector('.zobai-lnglpg-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 biggest difference between LNG and LPG safety valve selection?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"LNG selection is dominated by cryogenic temperature, low-temperature materials, boil-off gas and trapped liquid expansion. 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Final valve selection should be based on the actual datasheet.\"\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-1f897411 e-con-full e-flex cmsmasters-block-default e-con e-parent\" data-id=\"1f897411\" 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-6febb740 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=\"6febb740\" 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-6a7de6cb e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6a7de6cb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-59e2633c e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"59e2633c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4f956467 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=\"4f956467\" 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-c2ef915 elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"c2ef915\" 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-614b9114 elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"614b9114\" 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-7ac5d72e 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=\"7ac5d72e\" 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 of 4\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-41474c9e e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"41474c9e\" 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-51d0dcd2 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"51d0dcd2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-3ba65086 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"3ba65086\" 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-24a65ebb e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"24a65ebb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-37c3bf99 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"37c3bf99\" 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-815d67d e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"815d67d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-76155876 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"76155876\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-29012e2e cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"29012e2e\" 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-6f9200c7 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6f9200c7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-30bf6adf cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"30bf6adf\" 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\/fr\/applications\/lng-and-lpg\/\">\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-6983cc42 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"6983cc42\" 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=\"2 of 4\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6312a1d e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"6312a1d\" 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-2c62afe2 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"2c62afe2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-184eb3e0 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"184eb3e0\" 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-12e0f896 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"12e0f896\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1ec828a8 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"1ec828a8\" 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-11441cd6 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"11441cd6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-20520899 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"20520899\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7f0c23e1 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"7f0c23e1\" 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-29191c0e e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"29191c0e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-495c374e cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"495c374e\" 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\/fr\/applications\/lng-and-lpg\/\">\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-645ff417 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"645ff417\" 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=\"3 of 4\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4b52f134 e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"4b52f134\" 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-6a833b03 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6a833b03\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-4eb1ee75 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"4eb1ee75\" 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-4e9ddd17 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"4e9ddd17\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7a097674 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"7a097674\" 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-5247c090 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"5247c090\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-6c474676 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6c474676\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7b09684b cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"7b09684b\" 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-2e6f7c5d e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"2e6f7c5d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8026f68 cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"8026f68\" 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\/fr\/applications\/lng-and-lpg\/\">\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-69e1b73c cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"69e1b73c\" 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=\"4 of 4\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-684321cf e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"684321cf\" 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-1413932d e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"1413932d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-2abbc14 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"2abbc14\" 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-505e22cd e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"505e22cd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-43e51295 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"43e51295\" 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-767d9e33 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"767d9e33\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-59773402 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"59773402\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-78884d32 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"78884d32\" 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-68897664 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"68897664\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5a47b4ec cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"5a47b4ec\" 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\/fr\/applications\/lng-and-lpg\/\">\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-5ecef41c cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"5ecef41c\" 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=\"Previous\">\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=\"Next\">\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 LNG and LPG Safety Valves for Cryogenic, Storage and Pressure Relief Systems CONTACT SALES LNG &#038; LPG Pressure Relief LNG and LPG Safety Valves for Cryogenic, Storage and Vaporization Systems LNG and LPG safety valves protect cryogenic transfer lines, storage vessels, vaporizers, loading skids, pressure build-up systems, transfer pumps, vapor return lines, compressor packages&#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-53107","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/pages\/53107","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/comments?post=53107"}],"version-history":[{"count":4,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/pages\/53107\/revisions"}],"predecessor-version":[{"id":53112,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/pages\/53107\/revisions\/53112"}],"up":[{"embeddable":true,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/pages\/52780"}],"wp:attachment":[{"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/media?parent=53107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}