{"id":53241,"date":"2026-05-15T10:09:23","date_gmt":"2026-05-15T10:09:23","guid":{"rendered":"https:\/\/zobai.com\/?page_id=53241"},"modified":"2026-05-15T10:11:29","modified_gmt":"2026-05-15T10:11:29","slug":"hydrogen","status":"publish","type":"page","link":"https:\/\/zobai.com\/ru\/applications\/hydrogen\/","title":{"rendered":"\u0412\u043e\u0434\u043e\u0440\u043e\u0434"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"53241\" class=\"elementor elementor-53241\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6400a4ac e-con-full e-flex cmsmasters-bg-hide-none cmsmasters-bg-hide-none cmsmasters-block-default e-con e-parent\" data-id=\"6400a4ac\" 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-e07dc95 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"e07dc95\" 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-26f8a01c 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=\"26f8a01c\" 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-63462ee0 elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"63462ee0\" 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\">Hydrogen Safety Valves for H2 Compressors, Storage, Electrolyzers, Fuel Cells and Pipeline Systems<\/h1>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1eb5fe16 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"1eb5fe16\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-51fdf073 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=\"51fdf073\" 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\/ru\/?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-12bfbb16 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"12bfbb16\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-4b97c15d e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"4b97c15d\" 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-5ae30314 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=\"5ae30314\" 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-2c3d62a7 e-con-full e-flex cmsmasters-block-default e-con e-parent\" data-id=\"2c3d62a7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3fae34cd cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-html\" data-id=\"3fae34cd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>\r\n  .zobai-hydrogen-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-hydrogen-page * { box-sizing: border-box; }\r\n\r\n  .zobai-hydrogen-section {\r\n    max-width: 100%;\r\n    margin: 0 auto;\r\n    padding: 88px 80px;\r\n  }\r\n\r\n  .zobai-hydrogen-section-soft { background: #f8faf9; }\r\n\r\n  .zobai-hydrogen-eyebrow {\r\n    display: inline-flex;\r\n    align-items: center;\r\n    gap: 8px;\r\n    color: var(--z-green);\r\n    font-size: 13px;\r\n    font-weight: 800;\r\n    letter-spacing: 0.14em;\r\n    text-transform: uppercase;\r\n    margin-bottom: 18px;\r\n  }\r\n\r\n  .zobai-hydrogen-eyebrow:before {\r\n    content: \"\u203a\u203a\u203a\";\r\n    color: var(--z-green);\r\n    font-size: 20px;\r\n    letter-spacing: -2px;\r\n  }\r\n\r\n  .zobai-hydrogen-title {\r\n    font-size: clamp(34px, 5vw, 76px);\r\n    line-height: 1.04;\r\n    letter-spacing: -0.04em;\r\n    margin: 0 0 26px;\r\n    color: var(--z-ink);\r\n    max-width: 1120px;\r\n  }\r\n\r\n  .zobai-hydrogen-lead {\r\n    font-size: clamp(17px, 1.5vw, 21px);\r\n    line-height: 1.75;\r\n    color: #35404a;\r\n    max-width: 1120px;\r\n    margin: 0 0 34px;\r\n  }\r\n\r\n  .zobai-hydrogen-grid {\r\n    display: grid;\r\n    grid-template-columns: repeat(12, 1fr);\r\n    gap: 28px;\r\n  }\r\n\r\n  .zobai-hydrogen-span-4 { grid-column: span 4; }\r\n  .zobai-hydrogen-span-5 { grid-column: span 5; }\r\n  .zobai-hydrogen-span-6 { grid-column: span 6; }\r\n  .zobai-hydrogen-span-7 { grid-column: span 7; }\r\n  .zobai-hydrogen-span-12 { grid-column: span 12; }\r\n\r\n  .zobai-hydrogen-card,\r\n  .zobai-hydrogen-case {\r\n    background: var(--z-card);\r\n    border: 1px solid var(--z-line);\r\n    border-radius: var(--z-radius);\r\n    padding: 30px;\r\n    box-shadow: 0 14px 38px rgba(18, 31, 42, 0.06);\r\n  }\r\n\r\n  .zobai-hydrogen-card h2,\r\n  .zobai-hydrogen-card h3,\r\n  .zobai-hydrogen-case h3 {\r\n    margin: 0 0 14px;\r\n    color: var(--z-ink);\r\n  }\r\n\r\n  .zobai-hydrogen-card h3,\r\n  .zobai-hydrogen-case h3 {\r\n    font-size: 24px;\r\n    line-height: 1.25;\r\n  }\r\n\r\n  .zobai-hydrogen-card p,\r\n  .zobai-hydrogen-case p {\r\n    font-size: 16px;\r\n    line-height: 1.72;\r\n    color: #48525d;\r\n    margin: 0 0 16px;\r\n  }\r\n\r\n  .zobai-hydrogen-card p:last-child,\r\n  .zobai-hydrogen-case p:last-child { margin-bottom: 0; }\r\n\r\n  .zobai-hydrogen-hero-panel {\r\n    background: linear-gradient(135deg, #09201d 0%, #0b3c34 48%, #0f8a6d 100%);\r\n    border-radius: 34px;\r\n    color: #fff;\r\n    padding: 50px;\r\n    position: relative;\r\n    overflow: hidden;\r\n  }\r\n\r\n  .zobai-hydrogen-hero-panel:after {\r\n    content: \"\";\r\n    position: absolute;\r\n    width: 360px;\r\n    height: 360px;\r\n    border-radius: 50%;\r\n    right: -150px;\r\n    top: -170px;\r\n    background: rgba(255,255,255,0.08);\r\n  }\r\n\r\n  .zobai-hydrogen-hero-panel h2 {\r\n    color: #fff;\r\n    font-size: clamp(34px, 4.6vw, 66px);\r\n    line-height: 1.06;\r\n    letter-spacing: -0.04em;\r\n    margin: 0 0 22px;\r\n    position: relative;\r\n    z-index: 1;\r\n  }\r\n\r\n  .zobai-hydrogen-hero-panel p {\r\n    color: rgba(255,255,255,0.88);\r\n    line-height: 1.75;\r\n    font-size: 18px;\r\n    max-width: 980px;\r\n    margin: 0;\r\n    position: relative;\r\n    z-index: 1;\r\n  }\r\n\r\n  .zobai-hydrogen-kpi {\r\n    display: grid;\r\n    grid-template-columns: repeat(4, 1fr);\r\n    gap: 14px;\r\n    margin-top: 34px;\r\n    position: relative;\r\n    z-index: 1;\r\n  }\r\n\r\n  .zobai-hydrogen-kpi-item {\r\n    border: 1px solid rgba(255,255,255,0.18);\r\n    background: rgba(255,255,255,0.08);\r\n    border-radius: 20px;\r\n    padding: 22px;\r\n  }\r\n\r\n  .zobai-hydrogen-kpi-item strong {\r\n    display: block;\r\n    color: #a9f4df;\r\n    font-size: 13px;\r\n    letter-spacing: 0.08em;\r\n    text-transform: uppercase;\r\n    margin-bottom: 10px;\r\n  }\r\n\r\n  .zobai-hydrogen-kpi-item span {\r\n    display: block;\r\n    color: #fff;\r\n    font-size: 20px;\r\n    line-height: 1.28;\r\n    font-weight: 850;\r\n  }\r\n\r\n  .zobai-hydrogen-flow {\r\n    display: grid;\r\n    gap: 16px;\r\n    margin-top: 28px;\r\n  }\r\n\r\n  .zobai-hydrogen-flow-item {\r\n    display: grid;\r\n    grid-template-columns: 90px 1fr;\r\n    gap: 20px;\r\n    background: #fff;\r\n    border: 1px solid var(--z-line);\r\n    border-radius: 22px;\r\n    padding: 24px;\r\n    box-shadow: 0 12px 30px rgba(18, 31, 42, 0.04);\r\n  }\r\n\r\n  .zobai-hydrogen-flow-num {\r\n    width: 64px;\r\n    height: 64px;\r\n    border-radius: 18px;\r\n    background: var(--z-soft);\r\n    color: var(--z-green-dark);\r\n    display: flex;\r\n    align-items: center;\r\n    justify-content: center;\r\n    font-size: 22px;\r\n    font-weight: 900;\r\n  }\r\n\r\n  .zobai-hydrogen-flow-item h3 {\r\n    margin: 0 0 8px;\r\n    font-size: 24px;\r\n    color: var(--z-ink);\r\n  }\r\n\r\n  .zobai-hydrogen-flow-item p {\r\n    margin: 0;\r\n    color: #4d5863;\r\n    line-height: 1.68;\r\n  }\r\n\r\n  .zobai-hydrogen-table-wrap {\r\n    overflow-x: auto;\r\n    border-radius: 20px;\r\n    border: 1px solid var(--z-line);\r\n    background: #fff;\r\n    box-shadow: 0 14px 34px rgba(18, 31, 42, 0.04);\r\n  }\r\n\r\n  .zobai-hydrogen-table {\r\n    width: 100%;\r\n    border-collapse: collapse;\r\n    min-width: 980px;\r\n    font-size: 15px;\r\n  }\r\n\r\n  .zobai-hydrogen-table th {\r\n    background: #102522;\r\n    color: #fff;\r\n    padding: 17px 18px;\r\n    text-align: left;\r\n    font-weight: 850;\r\n    white-space: nowrap;\r\n  }\r\n\r\n  .zobai-hydrogen-table td {\r\n    padding: 17px 18px;\r\n    border-bottom: 1px solid var(--z-line);\r\n    color: #3d4953;\r\n    vertical-align: top;\r\n    line-height: 1.55;\r\n  }\r\n\r\n  .zobai-hydrogen-table tr:nth-child(even) td { background: #fbfcfc; }\r\n  .zobai-hydrogen-table tr:last-child td { border-bottom: 0; }\r\n\r\n  .zobai-hydrogen-list {\r\n    display: grid;\r\n    gap: 12px;\r\n    margin: 20px 0 0;\r\n    padding: 0;\r\n    list-style: none;\r\n  }\r\n\r\n  .zobai-hydrogen-list li {\r\n    position: relative;\r\n    padding-left: 30px;\r\n    color: #48525d;\r\n    line-height: 1.62;\r\n  }\r\n\r\n  .zobai-hydrogen-list li:before {\r\n    content: \"\u2713\";\r\n    position: absolute;\r\n    left: 0;\r\n    top: 0;\r\n    color: var(--z-green);\r\n    font-weight: 900;\r\n  }\r\n\r\n  .zobai-hydrogen-case {\r\n    border-radius: 24px;\r\n    padding: 28px;\r\n  }\r\n\r\n  .zobai-hydrogen-case-top {\r\n    display: flex;\r\n    justify-content: space-between;\r\n    gap: 16px;\r\n    align-items: flex-start;\r\n    margin-bottom: 18px;\r\n  }\r\n\r\n  .zobai-hydrogen-case-tag {\r\n    display: inline-flex;\r\n    align-items: center;\r\n    white-space: nowrap;\r\n    border-radius: 999px;\r\n    background: var(--z-soft);\r\n    color: var(--z-green-dark);\r\n    padding: 8px 12px;\r\n    font-size: 13px;\r\n    font-weight: 850;\r\n  }\r\n\r\n  .zobai-hydrogen-case-data {\r\n    display: grid;\r\n    grid-template-columns: repeat(2, 1fr);\r\n    gap: 10px 18px;\r\n    margin: 18px 0;\r\n    padding: 18px;\r\n    border-radius: 18px;\r\n    background: #f8fbfa;\r\n    border: 1px solid #dcebe7;\r\n  }\r\n\r\n  .zobai-hydrogen-case-data div {\r\n    color: #42505b;\r\n    line-height: 1.5;\r\n    font-size: 14px;\r\n  }\r\n\r\n  .zobai-hydrogen-case-data b { color: var(--z-ink); }\r\n\r\n  .zobai-hydrogen-chip-row {\r\n    display: flex;\r\n    flex-wrap: wrap;\r\n    gap: 10px;\r\n    margin-top: 22px;\r\n  }\r\n\r\n  .zobai-hydrogen-chip {\r\n    display: inline-flex;\r\n    align-items: center;\r\n    border: 1px solid #cde6df;\r\n    background: #f5fffb;\r\n    color: #0a6d5b;\r\n    border-radius: 999px;\r\n    padding: 9px 14px;\r\n    font-size: 14px;\r\n    font-weight: 700;\r\n  }\r\n\r\n  .zobai-hydrogen-link-grid {\r\n    display: grid;\r\n    grid-template-columns: repeat(3, 1fr);\r\n    gap: 14px;\r\n    margin-top: 24px;\r\n  }\r\n\r\n  .zobai-hydrogen-link-card {\r\n    display: block;\r\n    text-decoration: none;\r\n    background: #fff;\r\n    border: 1px solid var(--z-line);\r\n    border-radius: 18px;\r\n    padding: 20px;\r\n    transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;\r\n  }\r\n\r\n  .zobai-hydrogen-link-card:hover {\r\n    transform: translateY(-2px);\r\n    border-color: #a7ded1;\r\n    box-shadow: 0 14px 34px rgba(18,31,42,0.08);\r\n  }\r\n\r\n  .zobai-hydrogen-link-card strong {\r\n    display: block;\r\n    color: var(--z-ink);\r\n    font-size: 17px;\r\n    margin-bottom: 8px;\r\n  }\r\n\r\n  .zobai-hydrogen-link-card span {\r\n    display: block;\r\n    color: #5d6873;\r\n    line-height: 1.55;\r\n    font-size: 14px;\r\n  }\r\n\r\n  .zobai-hydrogen-accordion { display: grid; gap: 14px; }\r\n\r\n  .zobai-hydrogen-acc-item {\r\n    background: #fff;\r\n    border: 1px solid var(--z-line);\r\n    border-radius: 18px;\r\n    overflow: hidden;\r\n  }\r\n\r\n  .zobai-hydrogen-acc-btn {\r\n    width: 100%;\r\n    border: 0;\r\n    background: #fff;\r\n    padding: 22px 24px;\r\n    display: flex;\r\n    justify-content: space-between;\r\n    align-items: center;\r\n    text-align: left;\r\n    cursor: pointer;\r\n    color: var(--z-ink);\r\n    font-size: 18px;\r\n    font-weight: 850;\r\n  }\r\n\r\n  .zobai-hydrogen-acc-btn span {\r\n    width: 34px;\r\n    height: 34px;\r\n    border-radius: 50%;\r\n    background: var(--z-soft);\r\n    color: var(--z-green-dark);\r\n    display: inline-flex;\r\n    align-items: center;\r\n    justify-content: center;\r\n    flex: 0 0 34px;\r\n    margin-left: 16px;\r\n    transition: transform 0.2s ease;\r\n  }\r\n\r\n  .zobai-hydrogen-acc-item.is-open .zobai-hydrogen-acc-btn span { transform: rotate(45deg); }\r\n\r\n  .zobai-hydrogen-acc-body {\r\n    display: none;\r\n    padding: 0 24px 24px;\r\n    color: #4a5661;\r\n    line-height: 1.72;\r\n    font-size: 16px;\r\n  }\r\n\r\n  .zobai-hydrogen-acc-item.is-open .zobai-hydrogen-acc-body { display: block; }\r\n\r\n  .zobai-hydrogen-rfq {\r\n    background: linear-gradient(135deg, #09201d 0%, #0d6f5d 100%);\r\n    border-radius: 34px;\r\n    padding: 48px;\r\n    color: #fff;\r\n    display: grid;\r\n    grid-template-columns: 1.05fr 0.95fr;\r\n    gap: 36px;\r\n    align-items: center;\r\n  }\r\n\r\n  .zobai-hydrogen-rfq h2 {\r\n    font-size: clamp(32px, 4vw, 56px);\r\n    line-height: 1.08;\r\n    letter-spacing: -0.04em;\r\n    color: #fff;\r\n    margin: 0 0 18px;\r\n  }\r\n\r\n  .zobai-hydrogen-rfq p {\r\n    color: rgba(255,255,255,0.86);\r\n    line-height: 1.72;\r\n    font-size: 17px;\r\n    margin: 0 0 24px;\r\n  }\r\n\r\n  .zobai-hydrogen-rfq-box {\r\n    background: rgba(255,255,255,0.10);\r\n    border: 1px solid rgba(255,255,255,0.18);\r\n    border-radius: 24px;\r\n    padding: 26px;\r\n  }\r\n\r\n  .zobai-hydrogen-rfq-box h3 {\r\n    color: #fff;\r\n    font-size: 22px;\r\n    margin: 0 0 16px;\r\n  }\r\n\r\n  .zobai-hydrogen-rfq-grid {\r\n    display: grid;\r\n    grid-template-columns: 1fr 1fr;\r\n    gap: 10px;\r\n  }\r\n\r\n  .zobai-hydrogen-rfq-item {\r\n    background: rgba(255,255,255,0.10);\r\n    border-radius: 14px;\r\n    padding: 12px 14px;\r\n    color: rgba(255,255,255,0.92);\r\n    font-size: 14px;\r\n    font-weight: 700;\r\n  }\r\n\r\n  .zobai-hydrogen-btn-row {\r\n    display: flex;\r\n    flex-wrap: wrap;\r\n    gap: 14px;\r\n  }\r\n\r\n  .zobai-hydrogen-btn {\r\n    display: inline-flex;\r\n    align-items: center;\r\n    justify-content: center;\r\n    min-height: 48px;\r\n    border-radius: 12px;\r\n    padding: 0 22px;\r\n    text-decoration: none;\r\n    font-weight: 850;\r\n    transition: transform 0.18s ease, opacity 0.18s ease;\r\n  }\r\n\r\n  .zobai-hydrogen-btn:hover {\r\n    transform: translateY(-2px);\r\n    opacity: 0.92;\r\n  }\r\n\r\n  .zobai-hydrogen-btn-primary {\r\n    background: #ffc400;\r\n    color: #18201f;\r\n  }\r\n\r\n  .zobai-hydrogen-btn-secondary {\r\n    background: rgba(255,255,255,0.12);\r\n    color: #fff;\r\n    border: 1px solid rgba(255,255,255,0.32);\r\n  }\r\n\r\n  .zobai-hydrogen-note {\r\n    margin-top: 18px;\r\n    color: #66727f;\r\n    font-size: 14px;\r\n    line-height: 1.6;\r\n  }\r\n\r\n  @media (max-width: 1024px) {\r\n    .zobai-hydrogen-span-4,\r\n    .zobai-hydrogen-span-5,\r\n    .zobai-hydrogen-span-6,\r\n    .zobai-hydrogen-span-7,\r\n    .zobai-hydrogen-span-12 { grid-column: span 12; }\r\n\r\n    .zobai-hydrogen-kpi,\r\n    .zobai-hydrogen-link-grid { grid-template-columns: 1fr; }\r\n\r\n    .zobai-hydrogen-rfq { grid-template-columns: 1fr; }\r\n  }\r\n\r\n  @media (max-width: 640px) {\r\n    .zobai-hydrogen-section { padding: 58px 18px; }\r\n\r\n    .zobai-hydrogen-card,\r\n    .zobai-hydrogen-hero-panel,\r\n    .zobai-hydrogen-rfq,\r\n    .zobai-hydrogen-case {\r\n      padding: 26px 20px;\r\n      border-radius: 24px;\r\n    }\r\n\r\n    .zobai-hydrogen-flow-item { grid-template-columns: 1fr; }\r\n    .zobai-hydrogen-case-top { flex-direction: column; }\r\n    .zobai-hydrogen-case-data { grid-template-columns: 1fr; }\r\n    .zobai-hydrogen-rfq-grid { grid-template-columns: 1fr; }\r\n  }\r\n<\/style>\r\n\r\n<div class=\"zobai-hydrogen-page\">\r\n\r\n  <section class=\"zobai-hydrogen-section\">\r\n    <div class=\"zobai-hydrogen-hero-panel\">\r\n      <div class=\"zobai-hydrogen-eyebrow\">Hydrogen \/ H2 Pressure Relief Service<\/div>\r\n      <h2>Hydrogen Safety Valves for H2 Compressors, Storage, Electrolyzers, Fuel Cells and Pipeline Systems<\/h2>\r\n      <p>\r\n        Hydrogen safety valves protect H2 compressors, electrolyzer outlets, high-pressure storage banks, buffer vessels, pressure reducing stations, fuel cell supply systems, hydrogen refueling stations, tube trailers, process hydrogen reactors, purification skids, liquefaction units, liquid hydrogen lines, pipeline stations and test systems from overpressure. Correct selection starts with hydrogen phase, purity, set pressure, protected equipment MAWP, maximum operating pressure, required relieving capacity, compressor blocked-discharge case, regulator failed-open case, thermal expansion, fire exposure, leakage tightness, material compatibility, hydrogen embrittlement review, low-temperature condition, back pressure, discharge destination and required inspection documents.\r\n      <\/p>\r\n\r\n      <div class=\"zobai-hydrogen-kpi\">\r\n        <div class=\"zobai-hydrogen-kpi-item\">\r\n          <strong>Core Equipment<\/strong>\r\n          <span>Compressors, storage banks, electrolyzers, PRV stations, fuel cells and H2 skids<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hydrogen-kpi-item\">\r\n          <strong>Key Relief Cases<\/strong>\r\n          <span>Compressor discharge, regulator failure, blocked outlet, fire case and thermal expansion<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hydrogen-kpi-item\">\r\n          <strong>Engineering Focus<\/strong>\r\n          <span>High pressure, leakage tightness, embrittlement, venting, ignition and material control<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hydrogen-kpi-item\">\r\n          <strong>RFQ Output<\/strong>\r\n          <span>Datasheet, sizing basis, MTC, calibration, seat test and material records<\/span>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hydrogen-section zobai-hydrogen-section-soft\">\r\n    <div class=\"zobai-hydrogen-eyebrow\">Hydrogen Applications<\/div>\r\n    <h2 class=\"zobai-hydrogen-title\">Where Hydrogen Safety Valves Are Used<\/h2>\r\n    <p class=\"zobai-hydrogen-lead\">\r\n      Hydrogen relief service is different from ordinary gas service because hydrogen has very low molecular weight, high diffusivity, wide flammability range, high-pressure storage requirements and material compatibility concerns. A correct H2 safety valve should be selected for actual pressure, phase, purity, leakage requirement and discharge philosophy.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-hydrogen-grid\">\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-4\">\r\n        <h3>Hydrogen Compressors and Booster Packages<\/h3>\r\n        <p>\r\n          Used on diaphragm compressors, reciprocating compressors, ionic compressors, booster skids, discharge headers, interstage vessels and gas receivers. Selection should review compressor map, blocked discharge, recycle failure, pulsation, vibration, discharge temperature and safe venting.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-4\">\r\n        <h3>High-Pressure Hydrogen Storage<\/h3>\r\n        <p>\r\n          Used on buffer vessels, cascade storage banks, tube trailers, cylinder racks, refueling station storage and high-pressure test systems. Relief review should include storage pressure, temperature rise, fire exposure, overfill, leakage tightness and vent stack design.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-4\">\r\n        <h3>Electrolyzers and Green Hydrogen Skids<\/h3>\r\n        <p>\r\n          Used on PEM electrolyzers, alkaline electrolyzers, hydrogen separators, dryers, purification systems and oxygen\/hydrogen balance-of-plant skids. Selection should review gas purity, water carryover, pressure control failure, blocked outlet and oxygen separation safety.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-4\">\r\n        <h3>Fuel Cell and Refueling Stations<\/h3>\r\n        <p>\r\n          Used on hydrogen dispensers, fueling skids, pressure reducing stations, pre-cooling loops, vehicle filling systems and fuel cell supply packages. Compact layouts require review of vent direction, operator exposure, leakage detection and maintenance access.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-4\">\r\n        <h3>Hydrogen Pipelines and PRV Stations<\/h3>\r\n        <p>\r\n          Used on hydrogen transmission lines, plant hydrogen headers, pressure letdown stations, metering skids and downstream gas systems. The key relief case is often regulator failed open or blocked downstream flow from a higher-pressure source.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-4\">\r\n        <h3>Process Hydrogen and Liquid Hydrogen Systems<\/h3>\r\n        <p>\r\n          Used on hydrogenation reactors, refinery hydrogen units, ammonia synthesis units, methanol plants, liquefaction systems, LH2 transfer lines and cryogenic storage systems. Selection should review high temperature, low temperature, purity, embrittlement, flashing and discharge treatment.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hydrogen-section\">\r\n    <div class=\"zobai-hydrogen-eyebrow\">Relief Case Analysis<\/div>\r\n    <h2 class=\"zobai-hydrogen-title\">Hydrogen Safety Valve Selection Starts With Pressure Source, Leakage Control and Material Compatibility<\/h2>\r\n    <p class=\"zobai-hydrogen-lead\">\r\n      Hydrogen systems can overpressure through compressor blocked discharge, regulator failed open, electrolyzer pressure control failure, storage overfill, external fire, trapped cryogenic liquid expansion or blocked outlet. The selected valve must match the actual pressure, gas capacity, phase, material requirement and discharge route.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-hydrogen-flow\">\r\n      <div class=\"zobai-hydrogen-flow-item\">\r\n        <div class=\"zobai-hydrogen-flow-num\">01<\/div>\r\n        <div>\r\n          <h3>Compressor Blocked Discharge<\/h3>\r\n          <p>\r\n            Hydrogen compressors can overpressure discharge piping, receivers and downstream storage if discharge is blocked or recycle fails. Sizing should review compressor flow, suction condition, discharge temperature, molecular weight, pulsation and outlet back pressure.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-flow-item\">\r\n        <div class=\"zobai-hydrogen-flow-num\">02<\/div>\r\n        <div>\r\n          <h3>Regulator Failed Open<\/h3>\r\n          <p>\r\n            A failed-open regulator or control valve can expose lower-rated downstream hydrogen systems to high upstream pressure. The downstream safety valve should be sized from failed-open flow, not normal hydrogen demand only.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-flow-item\">\r\n        <div class=\"zobai-hydrogen-flow-num\">03<\/div>\r\n        <div>\r\n          <h3>Electrolyzer Outlet or Separator Overpressure<\/h3>\r\n          <p>\r\n            Electrolyzer systems can overpressure when outlet valves close, pressure controls fail, gas separators flood or downstream dryers and purifiers restrict flow. Relief review should include hydrogen purity, water carryover and oxygen separation philosophy.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-flow-item\">\r\n        <div class=\"zobai-hydrogen-flow-num\">04<\/div>\r\n        <div>\r\n          <h3>High-Pressure Storage Fire Case<\/h3>\r\n          <p>\r\n            Hydrogen buffer vessels, storage banks, receivers and tube trailers may require fire-case relief review. The discharge system should handle high-energy gas release, jet direction, noise and safe dispersion.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-flow-item\">\r\n        <div class=\"zobai-hydrogen-flow-num\">05<\/div>\r\n        <div>\r\n          <h3>Liquid Hydrogen and Cryogenic Thermal Relief<\/h3>\r\n          <p>\r\n            Liquid hydrogen trapped between closed valves can build pressure rapidly as heat leaks into the line. Cryogenic hydrogen service requires low-temperature material review, flashing behavior review and cold vent routing.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-flow-item\">\r\n        <div class=\"zobai-hydrogen-flow-num\">06<\/div>\r\n        <div>\r\n          <h3>Leakage, Back Pressure and Vent Safety<\/h3>\r\n          <p>\r\n            Hydrogen leakage can be difficult to detect and can ignite easily. Seat tightness, vent stack location, back pressure, outlet support, flame arrestor philosophy, gas detection and ignition source separation should be reviewed together.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hydrogen-section zobai-hydrogen-section-soft\">\r\n    <div class=\"zobai-hydrogen-eyebrow\">Application Case Data<\/div>\r\n    <h2 class=\"zobai-hydrogen-title\">Hydrogen Safety Valve Application Cases with Typical RFQ Data<\/h2>\r\n    <p class=\"zobai-hydrogen-lead\">\r\n      These cases show how hydrogen safety valve requirements are commonly described before model selection. Final sizing must be confirmed by hydrogen phase, gas composition, protected equipment datasheet, relief scenario, material requirements, discharge system review and project standard.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-hydrogen-grid\">\r\n      <div class=\"zobai-hydrogen-case zobai-hydrogen-span-6\">\r\n        <div class=\"zobai-hydrogen-case-top\">\r\n          <h3>Case 1: High-Pressure Hydrogen Storage Bank Safety Valve<\/h3>\r\n          <span class=\"zobai-hydrogen-case-tag\">High Pressure Storage<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hydrogen-case-data\">\r\n          <div><b>Protected equipment:<\/b> Hydrogen storage bank, buffer vessel or cascade storage<\/div>\r\n          <div><b>Medium:<\/b> Compressed hydrogen gas<\/div>\r\n          <div><b>Set pressure:<\/b> Storage vessel or manifold protection value<\/div>\r\n          <div><b>Relief cause:<\/b> Overfill, regulator failure, compressor overpressure or fire exposure<\/div>\r\n          <div><b>Required data:<\/b> Storage pressure, vessel MAWP, temperature range and gas purity<\/div>\r\n          <div><b>Discharge:<\/b> High vent stack, flare or approved safe hydrogen vent system<\/div>\r\n          <div><b>Valve review:<\/b> High-pressure hydrogen safety valve with tight shutoff<\/div>\r\n          <div><b>Key review:<\/b> Leakage, noise, jet reaction force, material compatibility and vent dispersion<\/div>\r\n        <\/div>\r\n        <p>\r\n          Hydrogen storage relief is high-energy gas service. Vent direction, outlet support, leakage control and material documentation should be reviewed before procurement.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-case zobai-hydrogen-span-6\">\r\n        <div class=\"zobai-hydrogen-case-top\">\r\n          <h3>Case 2: Hydrogen Compressor Discharge PSV<\/h3>\r\n          <span class=\"zobai-hydrogen-case-tag\">Compressor Protection<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hydrogen-case-data\">\r\n          <div><b>Protected equipment:<\/b> Compressor discharge line, receiver or interstage vessel<\/div>\r\n          <div><b>Medium:<\/b> Hydrogen gas with possible moisture or trace impurities<\/div>\r\n          <div><b>Set pressure:<\/b> Compressor package or receiver protection value<\/div>\r\n          <div><b>Relief cause:<\/b> Blocked discharge, recycle failure or control failure<\/div>\r\n          <div><b>Required data:<\/b> Compressor map, maximum flow, discharge pressure and discharge temperature<\/div>\r\n          <div><b>Discharge:<\/b> Vent stack, flare, closed vent or recycle arrangement<\/div>\r\n          <div><b>Valve review:<\/b> Gas PSV or pilot operated valve where clean H2 service allows<\/div>\r\n          <div><b>Key review:<\/b> Vibration, pulsation, leakage tightness, back pressure and embrittlement review<\/div>\r\n        <\/div>\r\n        <p>\r\n          Compressor discharge relief should be selected from maximum credible compressor flow. Pulsation, vibration and tight shutoff are especially important in hydrogen service.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-case zobai-hydrogen-span-6\">\r\n        <div class=\"zobai-hydrogen-case-top\">\r\n          <h3>Case 3: Electrolyzer Hydrogen Outlet Safety Valve<\/h3>\r\n          <span class=\"zobai-hydrogen-case-tag\">Green Hydrogen<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hydrogen-case-data\">\r\n          <div><b>Protected equipment:<\/b> Electrolyzer outlet, separator, dryer or purification skid<\/div>\r\n          <div><b>Medium:<\/b> Hydrogen gas with possible water vapor<\/div>\r\n          <div><b>Set pressure:<\/b> Electrolyzer or downstream skid protection value<\/div>\r\n          <div><b>Relief cause:<\/b> Outlet blockage, pressure control failure or dryer restriction<\/div>\r\n          <div><b>Required data:<\/b> H2 production rate, operating pressure, purity, water content and outlet temperature<\/div>\r\n          <div><b>Discharge:<\/b> Safe vent stack, hydrogen vent header or approved treatment path<\/div>\r\n          <div><b>Valve review:<\/b> Clean hydrogen PSV with tight shutoff and compatible materials<\/div>\r\n          <div><b>Key review:<\/b> Moisture, oxygen separation, leakage detection, vent location and maintenance access<\/div>\r\n        <\/div>\r\n        <p>\r\n          Electrolyzer relief devices should be coordinated with hydrogen purification, drying, oxygen separation and gas detection philosophy.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-case zobai-hydrogen-span-6\">\r\n        <div class=\"zobai-hydrogen-case-top\">\r\n          <h3>Case 4: Hydrogen Refueling Station PRV Downstream Safety Valve<\/h3>\r\n          <span class=\"zobai-hydrogen-case-tag\">Fueling Station<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hydrogen-case-data\">\r\n          <div><b>Protected equipment:<\/b> Downstream fueling line, dispenser skid or pressure letdown package<\/div>\r\n          <div><b>Medium:<\/b> High-purity compressed hydrogen<\/div>\r\n          <div><b>Upstream pressure:<\/b> High-pressure storage or compressor supply<\/div>\r\n          <div><b>Set pressure:<\/b> Below downstream component design pressure<\/div>\r\n          <div><b>Relief cause:<\/b> Regulator failed open, dispenser isolation or blocked downstream flow<\/div>\r\n          <div><b>Required data:<\/b> Upstream pressure, regulator Cv, downstream MAWP and filling sequence<\/div>\r\n          <div><b>Discharge:<\/b> High vent stack or approved station vent header<\/div>\r\n          <div><b>Key review:<\/b> High pressure, frequent cycling, gas detection, vent direction and operator safety<\/div>\r\n        <\/div>\r\n        <p>\r\n          Refueling station relief valves should be reviewed with the complete station sequence, including isolation valves, fast pressure changes and safe vent mast arrangement.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-case zobai-hydrogen-span-6\">\r\n        <div class=\"zobai-hydrogen-case-top\">\r\n          <h3>Case 5: Liquid Hydrogen Transfer Line Thermal Relief Valve<\/h3>\r\n          <span class=\"zobai-hydrogen-case-tag\">Cryogenic LH2<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hydrogen-case-data\">\r\n          <div><b>Protected equipment:<\/b> LH2 transfer line or isolated cryogenic pipe section<\/div>\r\n          <div><b>Medium:<\/b> Liquid hydrogen, cold hydrogen vapor and flashing cryogenic fluid<\/div>\r\n          <div><b>Service temperature:<\/b> Liquid hydrogen cryogenic condition<\/div>\r\n          <div><b>Set pressure:<\/b> Below protected piping design pressure<\/div>\r\n          <div><b>Relief cause:<\/b> Heat leak into blocked-in liquid hydrogen<\/div>\r\n          <div><b>Required data:<\/b> Trapped volume, insulation condition, heat leak, pipe rating and discharge route<\/div>\r\n          <div><b>Valve review:<\/b> Cryogenic hydrogen thermal relief valve with suitable materials<\/div>\r\n          <div><b>Key review:<\/b> Low-temperature toughness, flashing, cold plume, embrittlement and icing<\/div>\r\n        <\/div>\r\n        <p>\r\n          Liquid hydrogen thermal relief is a cryogenic service. Material toughness, extended bonnet needs and cold discharge routing should be confirmed before ordering.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-case zobai-hydrogen-span-6\">\r\n        <div class=\"zobai-hydrogen-case-top\">\r\n          <h3>Case 6: Hydrogenation Reactor Safety Valve<\/h3>\r\n          <span class=\"zobai-hydrogen-case-tag\">Process Hydrogen<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hydrogen-case-data\">\r\n          <div><b>Protected equipment:<\/b> Hydrogenation reactor, separator or process hydrogen vessel<\/div>\r\n          <div><b>Medium:<\/b> Hydrogen-rich gas, solvent vapor, reactants or possible two-phase mixture<\/div>\r\n          <div><b>Set pressure:<\/b> Reactor or vessel MAWP-based value<\/div>\r\n          <div><b>Relief cause:<\/b> Gas supply failure, runaway reaction, blocked outlet or fire case<\/div>\r\n          <div><b>Required data:<\/b> Reaction pressure, temperature, gas composition, liquid carryover and relief scenario<\/div>\r\n          <div><b>Discharge:<\/b> Flare, closed vent, scrubber or approved process relief system<\/div>\r\n          <div><b>Valve review:<\/b> Process PSV with hydrogen-compatible trim and project documentation<\/div>\r\n          <div><b>Key review:<\/b> High temperature, two-phase risk, flammability, back pressure and material compatibility<\/div>\r\n        <\/div>\r\n        <p>\r\n          Process hydrogen systems often combine high pressure, high temperature and flammable gas. Relief valve selection should be integrated with the process relief study.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hydrogen-section\">\r\n    <div class=\"zobai-hydrogen-eyebrow\">Service Data Matrix<\/div>\r\n    <h2 class=\"zobai-hydrogen-title\">Hydrogen Safety Valve Data Matrix<\/h2>\r\n\r\n    <div class=\"zobai-hydrogen-table-wrap\">\r\n      <table class=\"zobai-hydrogen-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Hydrogen 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>Compressor discharge<\/td>\r\n            <td>Compressed hydrogen gas, high-purity H2, wet H2<\/td>\r\n            <td>Blocked discharge, recycle failure, compressor control failure<\/td>\r\n            <td>Compressor map, maximum flow, discharge temperature, pulsation, vibration and back pressure<\/td>\r\n            <td>Gas PSV or pilot operated valve where clean H2 service allows<\/td>\r\n            <td>Receiver overpressure, leakage, chatter or unsafe hydrogen jet release<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>High-pressure storage<\/td>\r\n            <td>Compressed hydrogen gas<\/td>\r\n            <td>Overfill, regulator failure, compressor overpressure, fire exposure<\/td>\r\n            <td>Storage pressure, vessel MAWP, temperature rise, fire case and vent dispersion<\/td>\r\n            <td>High-pressure hydrogen safety valve with tight shutoff and material documentation<\/td>\r\n            <td>High-energy gas release, flammable cloud or storage system overpressure<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Electrolyzer outlet<\/td>\r\n            <td>Hydrogen gas, water vapor, high-purity H2<\/td>\r\n            <td>Outlet blockage, pressure control failure, dryer or purifier restriction<\/td>\r\n            <td>Production rate, purity, water content, oxygen separation and downstream MAWP<\/td>\r\n            <td>Clean hydrogen PSV with leakage and material compatibility review<\/td>\r\n            <td>Electrolyzer overpressure, contamination risk or unsafe venting<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Fueling station \/ PRV station<\/td>\r\n            <td>High-pressure hydrogen gas<\/td>\r\n            <td>Regulator failed open, dispenser isolation, blocked downstream flow<\/td>\r\n            <td>Upstream pressure, failed-open flow, downstream design pressure and vent mast design<\/td>\r\n            <td>Compact high-pressure H2 safety valve or pilot operated valve where suitable<\/td>\r\n            <td>Downstream overpressure, frequent lifting or operator exposure<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Liquid hydrogen line<\/td>\r\n            <td>LH2, cold hydrogen vapor, flashing cryogenic fluid<\/td>\r\n            <td>Blocked-in liquid thermal expansion, heat leak, isolation<\/td>\r\n            <td>Trapped volume, cryogenic temperature, material toughness and cold vent route<\/td>\r\n            <td>Cryogenic hydrogen thermal relief valve with low-temperature material review<\/td>\r\n            <td>Rapid overpressure, cold plume, brittle failure or blocked relief path<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Process hydrogen reactor<\/td>\r\n            <td>Hydrogen-rich gas, solvent vapor, possible two-phase mixture<\/td>\r\n            <td>Blocked outlet, runaway reaction, fire case, gas supply failure<\/td>\r\n            <td>Reaction pressure, temperature, two-phase risk, back pressure and material compatibility<\/td>\r\n            <td>Process PSV with hydrogen-compatible materials and complete documentation<\/td>\r\n            <td>Undersized relief, flammable release or rejected inspection documents<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hydrogen-section zobai-hydrogen-section-soft\">\r\n    <div class=\"zobai-hydrogen-eyebrow\">Selection Framework<\/div>\r\n    <h2 class=\"zobai-hydrogen-title\">How to Specify a Hydrogen Safety Valve Correctly<\/h2>\r\n\r\n    <div class=\"zobai-hydrogen-grid\">\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-6\">\r\n        <h3>1. Confirm hydrogen phase, purity and pressure class<\/h3>\r\n        <p>\r\n          Specify compressed gas hydrogen, liquid hydrogen, hydrogen-rich process gas, wet hydrogen, high-purity hydrogen or hydrogen blend. Pressure, purity, moisture and trace impurities affect capacity, leakage, material selection and maintenance strategy.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-6\">\r\n        <h3>2. Define protected equipment MAWP and operating margin<\/h3>\r\n        <p>\r\n          Start with storage vessel MAWP, compressor receiver rating, electrolyzer skid rating, pipeline MAOP, downstream PRV station limit or reactor design pressure. Operating pressure too close to set pressure can increase leakage and cycling risk.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-6\">\r\n        <h3>3. Size from the governing relief scenario<\/h3>\r\n        <p>\r\n          Review compressor blocked discharge, regulator failed open, electrolyzer outlet blockage, fire exposure, storage overfill, blocked liquid hydrogen expansion and process reaction relief. The highest credible case controls certified capacity.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-6\">\r\n        <h3>4. Review hydrogen material compatibility<\/h3>\r\n        <p>\r\n          Hydrogen service should review body, bonnet, nozzle, disc, stem, spring, bolting, gasket and seat materials. High pressure, fatigue, temperature and owner specifications may require additional material control or hardness requirements.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-6\">\r\n        <h3>5. Define leakage tightness and seat design<\/h3>\r\n        <p>\r\n          Hydrogen can leak through small sealing paths more easily than many heavier gases. Soft seat, metal seat, operating margin, seat tightness test, surface finish and maintenance interval should be defined clearly in the RFQ.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-6\">\r\n        <h3>6. Confirm discharge route and ignition control<\/h3>\r\n        <p>\r\n          Hydrogen discharge should be routed to an approved safe vent, flare, stack or recovery system. Vent height, jet direction, gas detection, ignition source separation, noise, reaction force and back pressure should be checked before installation.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hydrogen-section\">\r\n    <div class=\"zobai-hydrogen-eyebrow\">Installation & Discharge<\/div>\r\n    <h2 class=\"zobai-hydrogen-title\">Hydrogen Relief Valves Must Be Reviewed With Venting, Leakage, Back Pressure, Ignition Risk and Material Control<\/h2>\r\n\r\n    <div class=\"zobai-hydrogen-grid\">\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-7\">\r\n        <h3>Why hydrogen relief valve installation controls real safety<\/h3>\r\n        <p>\r\n          Hydrogen relief performance depends on the full installation. A correctly sized valve can still create risk if the vent stack is too low, the discharge points toward platforms, the outlet line has excessive back pressure, the inlet branch is undersized, or the valve uses materials not suitable for the pressure, temperature and hydrogen exposure.\r\n        <\/p>\r\n        <p>\r\n          Installation should review inlet pressure loss, valve orientation, outlet support, acoustic vibration, vent stack height, gas dispersion, jet flame direction, ignition source distance, gas detection, closed header back pressure, flare capacity, low-temperature cooling, material traceability, isolation valve policy, calibration access and safe replacement clearance.\r\n        <\/p>\r\n        <div class=\"zobai-hydrogen-chip-row\">\r\n          <span class=\"zobai-hydrogen-chip\">Hydrogen<\/span>\r\n          <span class=\"zobai-hydrogen-chip\">H2 Compressor<\/span>\r\n          <span class=\"zobai-hydrogen-chip\">Electrolyzer<\/span>\r\n          <span class=\"zobai-hydrogen-chip\">High Pressure<\/span>\r\n          <span class=\"zobai-hydrogen-chip\">Tight Shutoff<\/span>\r\n          <span class=\"zobai-hydrogen-chip\">Safe Venting<\/span>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-5\">\r\n        <h3>Field installation checks<\/h3>\r\n        <ul class=\"zobai-hydrogen-list\">\r\n          <li>Confirm set pressure, MAWP \/ MAOP and hydrogen phase before installation.<\/li>\r\n          <li>Keep inlet pressure loss within the project design limit.<\/li>\r\n          <li>Route hydrogen discharge to an approved vent stack, flare, closed vent or recovery system.<\/li>\r\n          <li>Check outlet back pressure from flare, vent stack, silencer or closed relief header.<\/li>\r\n          <li>Keep hydrogen discharge away from platforms, air intakes, doors, ignition sources and enclosed spaces.<\/li>\r\n          <li>Verify material certificates, seat requirement, leakage test and cleaning condition.<\/li>\r\n          <li>Provide safe access for calibration, seat tightness testing, inspection and valve replacement.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hydrogen-section zobai-hydrogen-section-soft\">\r\n    <div class=\"zobai-hydrogen-eyebrow\">Standards & Documentation<\/div>\r\n    <h2 class=\"zobai-hydrogen-title\">Standards and Documents to Confirm Before Ordering<\/h2>\r\n\r\n    <div class=\"zobai-hydrogen-grid\">\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-6\">\r\n        <h3>Common hydrogen relief references<\/h3>\r\n        <p>\r\n          Hydrogen safety valve specifications may reference NFPA, ASME, API, ISO, CGA, EN, GB, local hydrogen safety rules, owner hydrogen material standards and project relief philosophy. The applicable design basis should be confirmed before quotation.\r\n        <\/p>\r\n        <ul class=\"zobai-hydrogen-list\">\r\n          <li><a href=\"\/standards\/nfpa-2\/\">NFPA 2<\/a> where hydrogen generation, storage, piping, transfer, use or handling requirements are specified by the project.<\/li>\r\n          <li><a href=\"\/standards\/asme-b31-12\/\">ASME B31.12<\/a> where gaseous hydrogen, hydrogen mixtures or liquid hydrogen piping requirements are specified.<\/li>\r\n          <li><a href=\"\/standards\/api-520\/\">API 520<\/a> for pressure-relieving device sizing and selection reference where required.<\/li>\r\n          <li><a href=\"\/standards\/api-521\/\">API 521<\/a> for pressure-relieving and depressuring system review, including flare, fire case and system-level relief cases.<\/li>\r\n          <li><a href=\"\/standards\/asme-section-viii\/\">ASME BPVC Section VIII<\/a> where hydrogen receivers, storage vessels, separators or reactors are pressure vessels.<\/li>\r\n          <li><a href=\"\/standards\/asme-b31-3\/\">ASME B31.3<\/a> where process hydrogen piping, chemical plant piping or skid piping is specified.<\/li>\r\n          <li><a href=\"\/standards\/api-527\/\">API 527<\/a> when seat tightness testing is required by the project specification.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-6\">\r\n        <h3>Typical hydrogen valve document package<\/h3>\r\n        <p>\r\n          Documentation should be agreed before manufacturing, especially for electrolyzers, fuel cell stations, hydrogen compressor skids, tube trailers, storage banks, hydrogen pipelines, refinery hydrogen units and EPC export projects.\r\n        <\/p>\r\n        <ul class=\"zobai-hydrogen-list\">\r\n          <li>Technical datasheet with tag number, model, size, orifice, set pressure and connection.<\/li>\r\n          <li>Sizing calculation or certified hydrogen relieving capacity confirmation.<\/li>\r\n          <li>Hydrogen phase, purity, molecular weight, operating temperature and relieving temperature basis.<\/li>\r\n          <li>Set pressure calibration certificate, pressure test report and seat tightness test report.<\/li>\r\n          <li>Material certificate for body, bonnet, nozzle, disc, trim, spring and pressure-retaining parts.<\/li>\r\n          <li>Hydrogen material compatibility, hardness, PMI, cleaning or low-temperature records where specified.<\/li>\r\n          <li>General arrangement drawing with dimensions, weight, outlet orientation and maintenance clearance.<\/li>\r\n          <li>Nameplate, tag list, spare parts list, inspection witness record and packing record when required.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hydrogen-section\">\r\n    <div class=\"zobai-hydrogen-eyebrow\">RFQ Checklist<\/div>\r\n    <h2 class=\"zobai-hydrogen-title\">Hydrogen Safety Valve RFQ Data Checklist<\/h2>\r\n\r\n    <div class=\"zobai-hydrogen-table-wrap\">\r\n      <table class=\"zobai-hydrogen-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 pressure boundary, code basis and set pressure limit.<\/td>\r\n            <td>H2 compressor, storage bank, electrolyzer, PRV station, tube trailer, fuel cell skid, reactor<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>MAWP \/ MAOP \/ design pressure<\/td>\r\n            <td>Defines the maximum pressure the valve must protect.<\/td>\r\n            <td>16 barg, 100 barg, 350 bar, 700 bar, vessel MAWP, pipeline MAOP, skid design pressure<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Set pressure<\/td>\r\n            <td>Defines valve opening pressure and capacity basis.<\/td>\r\n            <td>Storage protection value, compressor discharge set pressure, downstream PRV protection value<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Hydrogen phase and purity<\/td>\r\n            <td>Affects sizing, leakage, material, cleaning and discharge route.<\/td>\r\n            <td>Compressed H2 gas, liquid hydrogen, wet hydrogen, 99.999% H2, H2 blend, process hydrogen gas<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Relief scenario<\/td>\r\n            <td>Determines required capacity and valve type.<\/td>\r\n            <td>Compressor blocked discharge, regulator failed open, electrolyzer outlet blockage, fire case, LH2 thermal relief<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Required capacity<\/td>\r\n            <td>Confirms whether the valve can protect the hydrogen system.<\/td>\r\n            <td>kg\/h, Nm\u00b3\/h, SCFM, compressor map, failed-open flow, fire case load, thermal expansion basis<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Operating pressure range<\/td>\r\n            <td>Shows operating margin, leakage risk and cycling risk.<\/td>\r\n            <td>Normal pressure, maximum operating pressure, pressure fluctuation range, filling sequence<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Operating and relieving temperature<\/td>\r\n            <td>Controls material, seat, low-temperature review and capacity.<\/td>\r\n            <td>Ambient H2, compressor discharge temperature, cold gas after letdown, liquid hydrogen cryogenic condition<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Back pressure and discharge route<\/td>\r\n            <td>Influences capacity, stability, vent safety and valve configuration.<\/td>\r\n            <td>Atmospheric vent, high vent stack, flare header, closed vent, recovery line, station vent mast<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Installation condition<\/td>\r\n            <td>Affects orientation, piping load, maintenance access and discharge safety.<\/td>\r\n            <td>Outdoor skid, compressor package, electrolyzer container, fueling station, pipeline yard, cryogenic line<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Material and seat requirement<\/td>\r\n            <td>Prevents leakage, hydrogen compatibility issues and document rejection.<\/td>\r\n            <td>316SS, stainless trim, soft seat, metal seat, low-temperature material, hydrogen-compatible gasket<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Required documents<\/td>\r\n            <td>Avoids procurement, inspection and commissioning delays.<\/td>\r\n            <td>Datasheet, drawing, MTC, sizing report, calibration report, pressure test, seat tightness test<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <p class=\"zobai-hydrogen-note\">\r\n      Final selection must be confirmed by hydrogen phase, purity, protected equipment datasheet, set pressure, relief scenario, required capacity, applicable standard, back pressure calculation, discharge philosophy, certified valve capacity and engineering review.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hydrogen-section zobai-hydrogen-section-soft\">\r\n    <div class=\"zobai-hydrogen-eyebrow\">Selection Errors<\/div>\r\n    <h2 class=\"zobai-hydrogen-title\">Common Hydrogen Safety Valve Selection Mistakes<\/h2>\r\n\r\n    <div class=\"zobai-hydrogen-grid\">\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-4\">\r\n        <h3>Treating hydrogen as ordinary gas service<\/h3>\r\n        <p>\r\n          Hydrogen has low molecular weight, high diffusivity and high flammability sensitivity. Leakage, material compatibility, venting and ignition control should be reviewed more carefully than ordinary utility gas service.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-4\">\r\n        <h3>Ignoring material compatibility and embrittlement risk<\/h3>\r\n        <p>\r\n          High-pressure hydrogen service requires material review. Body, trim, bolting, spring, gasket and seat materials should match pressure, temperature, purity and project material specifications.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-4\">\r\n        <h3>Using normal flow instead of relief flow<\/h3>\r\n        <p>\r\n          Compressor blocked-discharge flow, regulator failed-open flow or fire-case load may be much larger than normal hydrogen consumption. Sizing should use the governing upset case.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-4\">\r\n        <h3>Missing leakage tightness requirements<\/h3>\r\n        <p>\r\n          Hydrogen leakage can create safety and product loss problems. Seat type, operating margin, seat tightness test and maintenance interval should be defined clearly before ordering.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-4\">\r\n        <h3>Discharging hydrogen near unsafe areas<\/h3>\r\n        <p>\r\n          Hydrogen vents should avoid platforms, air intakes, doors, electrical equipment, ignition sources and enclosed spaces. Vent height, direction and dispersion should be reviewed.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-card zobai-hydrogen-span-4\">\r\n        <h3>Forgetting low-temperature or cryogenic conditions<\/h3>\r\n        <p>\r\n          Hydrogen letdown can cool the gas, and liquid hydrogen service is cryogenic. Low-temperature materials, cold discharge and thermal contraction should be reviewed where applicable.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hydrogen-section\">\r\n    <div class=\"zobai-hydrogen-eyebrow\">Related Engineering Resources<\/div>\r\n    <h2 class=\"zobai-hydrogen-title\">Continue Your Hydrogen Safety Valve Selection Review<\/h2>\r\n    <p class=\"zobai-hydrogen-lead\">\r\n      These related pages help move from hydrogen relief requirements to detailed valve selection, gas sizing, high-pressure service, compressor protection, leakage review and complete RFQ preparation.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-hydrogen-link-grid\">\r\n      <a class=\"zobai-hydrogen-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-hydrogen-link-card\" href=\"\/engineering\/safety-valve-sizing\/\">\r\n        <strong>Safety Valve Sizing<\/strong>\r\n        <span>Review hydrogen gas capacity, set pressure, molecular weight, back pressure and sizing inputs before RFQ.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-hydrogen-link-card\" href=\"\/products\/pilot-operated-safety-valves\/\">\r\n        <strong>Pilot Operated Safety Valves<\/strong>\r\n        <span>For clean hydrogen, high pressure, tight shutoff, high capacity and selected back pressure applications.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-hydrogen-link-card\" href=\"\/products\/spring-loaded-safety-valves\/\">\r\n        <strong>Spring Loaded Safety Valves<\/strong>\r\n        <span>For hydrogen compressors, storage vessels, electrolyzer skids and standard H2 pressure relief service.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-hydrogen-link-card\" href=\"\/applications\/high-pressure\/\">\r\n        <strong>High Pressure Safety Valves<\/strong>\r\n        <span>For hydrogen storage, compressors, tube trailers, refueling stations and high-pressure gas systems.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-hydrogen-link-card\" href=\"\/applications\/low-temperature\/\">\r\n        <strong>Low Temperature Safety Valves<\/strong>\r\n        <span>For cold hydrogen gas, liquid hydrogen, cryogenic materials and low-temperature documentation.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-hydrogen-link-card\" href=\"\/applications\/high-back-pressure\/\">\r\n        <strong>High Back Pressure Service<\/strong>\r\n        <span>For hydrogen PSVs connected to flare headers, closed vents, recovery systems and shared relief headers.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-hydrogen-link-card\" href=\"\/equipment\/compressors\/\">\r\n        <strong>Compressor Safety Valves<\/strong>\r\n        <span>For hydrogen compressor blocked discharge, pulsation, vibration, discharge temperature and gas relief.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-hydrogen-link-card\" href=\"\/equipment\/skid-systems\/\">\r\n        <strong>Skid System Safety Valves<\/strong>\r\n        <span>For electrolyzer skids, hydrogen fueling stations, purification skids and modular H2 packages.<\/span>\r\n      <\/a>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hydrogen-section zobai-hydrogen-section-soft\">\r\n    <div class=\"zobai-hydrogen-eyebrow\">FAQ<\/div>\r\n    <h2 class=\"zobai-hydrogen-title\">Hydrogen Safety Valve FAQ<\/h2>\r\n\r\n    <div class=\"zobai-hydrogen-accordion\" data-zobai-hydrogen-accordion>\r\n      <div class=\"zobai-hydrogen-acc-item is-open\">\r\n        <button class=\"zobai-hydrogen-acc-btn\" type=\"button\">What is the most common hydrogen safety valve application? <span>+<\/span><\/button>\r\n        <div class=\"zobai-hydrogen-acc-body\">\r\n          Common applications include hydrogen compressor discharge protection, high-pressure storage protection, electrolyzer outlet protection, fuel cell station pressure relief, PRV station downstream protection and liquid hydrogen thermal relief.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-acc-item\">\r\n        <button class=\"zobai-hydrogen-acc-btn\" type=\"button\">Can a standard gas safety valve be used for hydrogen? <span>+<\/span><\/button>\r\n        <div class=\"zobai-hydrogen-acc-body\">\r\n          Not automatically. Hydrogen service requires review of pressure, phase, leakage tightness, material compatibility, seat design, discharge route, ignition risk, back pressure and project documentation.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-acc-item\">\r\n        <button class=\"zobai-hydrogen-acc-btn\" type=\"button\">When should a pilot operated valve be reviewed for hydrogen service? <span>+<\/span><\/button>\r\n        <div class=\"zobai-hydrogen-acc-body\">\r\n          A pilot operated safety valve may be reviewed for clean hydrogen, high pressure, large capacity, tight shutoff or selected high back pressure applications. Pilot line cleanliness, leakage, freezing, maintenance and gas purity must be checked.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-acc-item\">\r\n        <button class=\"zobai-hydrogen-acc-btn\" type=\"button\">What data is required for a hydrogen safety valve quotation? <span>+<\/span><\/button>\r\n        <div class=\"zobai-hydrogen-acc-body\">\r\n          Provide protected equipment, MAWP or MAOP, set pressure, hydrogen phase, purity, relief scenario, required capacity, operating pressure, relieving temperature, back pressure, discharge route, installation condition, material requirement, seat requirement and required documents.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-acc-item\">\r\n        <button class=\"zobai-hydrogen-acc-btn\" type=\"button\">Where should hydrogen safety valve discharge be routed? <span>+<\/span><\/button>\r\n        <div class=\"zobai-hydrogen-acc-body\">\r\n          Hydrogen discharge should be routed to an approved safe destination such as a high vent stack, flare, closed vent or recovery system according to the project relief philosophy. Gas dispersion, ignition sources, back pressure, noise and personnel exposure must be reviewed.\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hydrogen-section\">\r\n    <div class=\"zobai-hydrogen-rfq\">\r\n      <div>\r\n        <div class=\"zobai-hydrogen-eyebrow\">Engineering RFQ Support<\/div>\r\n        <h2>Prepare a Complete Hydrogen Safety Valve Datasheet Before Quotation<\/h2>\r\n        <p>\r\n          Send the protected equipment datasheet, MAWP or MAOP, design pressure, set pressure, hydrogen phase, purity, molecular weight, relief scenario, required capacity, operating pressure range, relieving temperature, compressor data or failed-open regulator data where applicable, back pressure, discharge route, installation condition, material requirement, seat requirement, connection standard and required documents. A complete datasheet helps confirm correct H2 sizing, tight shutoff, material compatibility and safe flammable gas discharge.\r\n        <\/p>\r\n        <div class=\"zobai-hydrogen-btn-row\">\r\n          <a class=\"zobai-hydrogen-btn zobai-hydrogen-btn-primary\" href=\"\/contact\/\">Request Engineering Quote<\/a>\r\n          <a class=\"zobai-hydrogen-btn zobai-hydrogen-btn-secondary\" href=\"\/ask-an-engineer\/\">Ask an Engineer<\/a>\r\n          <a class=\"zobai-hydrogen-btn zobai-hydrogen-btn-secondary\" href=\"\/catalog-pdf\/\">Download Catalog PDF<\/a>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hydrogen-rfq-box\">\r\n        <h3>Minimum RFQ data<\/h3>\r\n        <div class=\"zobai-hydrogen-rfq-grid\">\r\n          <div class=\"zobai-hydrogen-rfq-item\">Protected Equipment<\/div>\r\n          <div class=\"zobai-hydrogen-rfq-item\">MAWP \/ MAOP<\/div>\r\n          <div class=\"zobai-hydrogen-rfq-item\">Set Pressure<\/div>\r\n          <div class=\"zobai-hydrogen-rfq-item\">Hydrogen Phase<\/div>\r\n          <div class=\"zobai-hydrogen-rfq-item\">Relief Scenario<\/div>\r\n          <div class=\"zobai-hydrogen-rfq-item\">Required Capacity<\/div>\r\n          <div class=\"zobai-hydrogen-rfq-item\">Purity \/ Composition<\/div>\r\n          <div class=\"zobai-hydrogen-rfq-item\">Temperature<\/div>\r\n          <div class=\"zobai-hydrogen-rfq-item\">Back Pressure<\/div>\r\n          <div class=\"zobai-hydrogen-rfq-item\">Discharge Route<\/div>\r\n          <div class=\"zobai-hydrogen-rfq-item\">Seat \/ Material<\/div>\r\n          <div class=\"zobai-hydrogen-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-hydrogen-accordion]');\r\n    accordions.forEach(function (accordion) {\r\n      var items = accordion.querySelectorAll('.zobai-hydrogen-acc-item');\r\n\r\n      items.forEach(function (item) {\r\n        var button = item.querySelector('.zobai-hydrogen-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 common hydrogen safety valve application?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Common applications include hydrogen compressor discharge protection, high-pressure storage protection, electrolyzer outlet protection, fuel cell station pressure relief, PRV station downstream protection and liquid hydrogen thermal relief.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Can a standard gas safety valve be used for hydrogen?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Not automatically. Hydrogen service requires review of pressure, phase, leakage tightness, material compatibility, seat design, discharge route, ignition risk, back pressure and project documentation.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"When should a pilot operated valve be reviewed for hydrogen service?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"A pilot operated safety valve may be reviewed for clean hydrogen, high pressure, large capacity, tight shutoff or selected high back pressure applications. Pilot line cleanliness, leakage, freezing, maintenance and gas purity must be checked.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What data is required for a hydrogen safety valve quotation?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Provide protected equipment, MAWP or MAOP, set pressure, hydrogen phase, purity, relief scenario, required capacity, operating pressure, relieving temperature, back pressure, discharge route, installation condition, material requirement, seat requirement and required documents.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Where should hydrogen safety valve discharge be routed?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Hydrogen discharge should be routed to an approved safe destination such as a high vent stack, flare, closed vent or recovery system according to the project relief philosophy. Gas dispersion, ignition sources, back pressure, noise and personnel exposure must be reviewed.\"\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-6a580e1 e-con-full e-flex cmsmasters-block-default e-con e-parent\" data-id=\"6a580e1\" 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-2d284f78 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=\"2d284f78\" 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-2d8fc719 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"2d8fc719\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-6b18b944 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6b18b944\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-63a2ed6e 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=\"63a2ed6e\" 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-1169ce37 elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"1169ce37\" 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-f89b829 elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"f89b829\" 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-9dc7b8f 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=\"9dc7b8f\" 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-71075ebd e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"71075ebd\" 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-662c0b2e e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"662c0b2e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7c1ffa33 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"7c1ffa33\" 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-47516c0a e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"47516c0a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-56f18160 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"56f18160\" 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-411d1875 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"411d1875\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-137e1b9b e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"137e1b9b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-60e5e8c1 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"60e5e8c1\" 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-69892023 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"69892023\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-71fa0522 cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"71fa0522\" 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\/ru\/applications\/hydrogen\/\">\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-5d067f0 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"5d067f0\" 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-44c0e171 e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"44c0e171\" 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-3643aee e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"3643aee\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-26e7d4d5 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"26e7d4d5\" 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-62870266 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"62870266\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7e8288c cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"7e8288c\" 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-2643fabc e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"2643fabc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-14f3c394 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"14f3c394\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f4877dc cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"f4877dc\" 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-696abbcd e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"696abbcd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-647b9b cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"647b9b\" 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\/ru\/applications\/hydrogen\/\">\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-4b3dee26 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"4b3dee26\" 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-4406d07d e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"4406d07d\" 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-2c7d14d e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"2c7d14d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-38190d22 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"38190d22\" 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-74aa9919 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"74aa9919\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-79b76e50 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"79b76e50\" 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-4b2c0c16 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"4b2c0c16\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-3c871a08 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"3c871a08\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6b0275b5 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"6b0275b5\" 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-131183dc e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"131183dc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7919a8cf cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"7919a8cf\" 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\/ru\/applications\/hydrogen\/\">\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-63889539 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"63889539\" 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-74f1a358 e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"74f1a358\" 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-13ea7488 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"13ea7488\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-dd901c7 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"dd901c7\" 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-75f69d32 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"75f69d32\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3e4026c7 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"3e4026c7\" 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-2a2ce460 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"2a2ce460\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-25b02d9b e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"25b02d9b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-24361c cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"24361c\" 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-504bcf85 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"504bcf85\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3f7bc542 cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"3f7bc542\" 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\/ru\/applications\/hydrogen\/\">\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-2d91497c cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"2d91497c\" 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 Hydrogen Safety Valves for H2 Compressors, Storage, Electrolyzers, Fuel Cells and Pipeline Systems CONTACT SALES Hydrogen \/ H2 Pressure Relief Service Hydrogen Safety Valves for H2 Compressors, Storage, Electrolyzers, Fuel Cells and Pipeline Systems Hydrogen safety valves protect H2 compressors, electrolyzer outlets, high-pressure storage banks, buffer vessels, pressure reducing stations, fuel cell supply systems,&#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-53241","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/pages\/53241","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/comments?post=53241"}],"version-history":[{"count":4,"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/pages\/53241\/revisions"}],"predecessor-version":[{"id":53246,"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/pages\/53241\/revisions\/53246"}],"up":[{"embeddable":true,"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/pages\/52780"}],"wp:attachment":[{"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/media?parent=53241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}