{"id":53158,"date":"2026-05-15T07:04:08","date_gmt":"2026-05-15T07:04:08","guid":{"rendered":"https:\/\/zobai.com\/?page_id=53158"},"modified":"2026-05-15T07:11:57","modified_gmt":"2026-05-15T07:11:57","slug":"pipelines","status":"publish","type":"page","link":"https:\/\/zobai.com\/fr\/applications\/pipelines\/","title":{"rendered":"Pipelines"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"53158\" class=\"elementor elementor-53158\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6825d273 e-con-full e-flex cmsmasters-bg-hide-none cmsmasters-bg-hide-none cmsmasters-block-default e-con e-parent\" data-id=\"6825d273\" 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-45232851 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"45232851\" 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-eb1cc8 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=\"eb1cc8\" 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-5e29e7a elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"5e29e7a\" 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\">Pipeline Safety Valves for Liquid, Gas, Thermal Relief and Transfer Line Protection<\/h1>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4b184b97 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"4b184b97\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-20827b20 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=\"20827b20\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;cmsmasters-pop-in&quot;,&quot;_animation_delay&quot;:300}\" data-widget_type=\"cmsmasters-button.default\">\n\t\t\t\t\t<div class=\"elementor-widget-cmsmasters-button__button-container\"><div class=\"elementor-widget-cmsmasters-button__button-container-inner\"><a href=\"https:\/\/zobai.com\/fr\/?page_id=48437\" class=\"cmsmasters-button-link elementor-widget-cmsmasters-button__button cmsmasters-icon-view-default cmsmasters-icon-shape- cmsmasters-button-size-sm\" role=\"button\" tabindex=\"0\"><span class=\"elementor-widget-cmsmasters-button__content-wrapper cmsmasters-align-icon-right\"><span class=\"elementor-widget-cmsmasters-button__icon\"><i aria-hidden=\"true\" class=\"cmsmsdemo-icon- cmsms-demo-icon-arrows-1\"><\/i><\/span><span class=\"elementor-widget-cmsmasters-button__text\">CONTACT SALES<\/span><\/span><\/a><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-723819f6 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"723819f6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-fcecf22 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"fcecf22\" 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-2ca33a4b 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=\"2ca33a4b\" 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-380384bd e-con-full e-flex cmsmasters-block-default e-con e-parent\" data-id=\"380384bd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1f135971 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-html\" data-id=\"1f135971\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>\r\n  .zobai-pipe-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-pipe-page * {\r\n    box-sizing: border-box;\r\n  }\r\n\r\n  .zobai-pipe-section {\r\n    max-width: 100%;\r\n    margin: 0 auto;\r\n    padding: 88px 80px;\r\n  }\r\n\r\n  .zobai-pipe-section-soft {\r\n    background: #f8faf9;\r\n  }\r\n\r\n  .zobai-pipe-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-pipe-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-pipe-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-pipe-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-pipe-grid {\r\n    display: grid;\r\n    grid-template-columns: repeat(12, 1fr);\r\n    gap: 28px;\r\n  }\r\n\r\n  .zobai-pipe-span-4 { grid-column: span 4; }\r\n  .zobai-pipe-span-5 { grid-column: span 5; }\r\n  .zobai-pipe-span-6 { grid-column: span 6; }\r\n  .zobai-pipe-span-7 { grid-column: span 7; }\r\n  .zobai-pipe-span-12 { grid-column: span 12; }\r\n\r\n  .zobai-pipe-card,\r\n  .zobai-pipe-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-pipe-card h2,\r\n  .zobai-pipe-card h3,\r\n  .zobai-pipe-case h3 {\r\n    margin: 0 0 14px;\r\n    color: var(--z-ink);\r\n  }\r\n\r\n  .zobai-pipe-card h3,\r\n  .zobai-pipe-case h3 {\r\n    font-size: 24px;\r\n    line-height: 1.25;\r\n  }\r\n\r\n  .zobai-pipe-card p,\r\n  .zobai-pipe-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-pipe-card p:last-child,\r\n  .zobai-pipe-case p:last-child {\r\n    margin-bottom: 0;\r\n  }\r\n\r\n  .zobai-pipe-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-pipe-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-pipe-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-pipe-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-pipe-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-pipe-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-pipe-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-pipe-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-pipe-flow {\r\n    display: grid;\r\n    gap: 16px;\r\n    margin-top: 28px;\r\n  }\r\n\r\n  .zobai-pipe-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-pipe-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-pipe-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-pipe-flow-item p {\r\n    margin: 0;\r\n    color: #4d5863;\r\n    line-height: 1.68;\r\n  }\r\n\r\n  .zobai-pipe-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-pipe-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-pipe-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-pipe-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-pipe-table tr:nth-child(even) td {\r\n    background: #fbfcfc;\r\n  }\r\n\r\n  .zobai-pipe-table tr:last-child td {\r\n    border-bottom: 0;\r\n  }\r\n\r\n  .zobai-pipe-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-pipe-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-pipe-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-pipe-case {\r\n    border-radius: 24px;\r\n    padding: 28px;\r\n  }\r\n\r\n  .zobai-pipe-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-pipe-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-pipe-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-pipe-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-pipe-case-data b {\r\n    color: var(--z-ink);\r\n  }\r\n\r\n  .zobai-pipe-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-pipe-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-pipe-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-pipe-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-pipe-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-pipe-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-pipe-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-pipe-accordion {\r\n    display: grid;\r\n    gap: 14px;\r\n  }\r\n\r\n  .zobai-pipe-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-pipe-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-pipe-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-pipe-acc-item.is-open .zobai-pipe-acc-btn span {\r\n    transform: rotate(45deg);\r\n  }\r\n\r\n  .zobai-pipe-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-pipe-acc-item.is-open .zobai-pipe-acc-body {\r\n    display: block;\r\n  }\r\n\r\n  .zobai-pipe-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-pipe-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-pipe-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-pipe-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-pipe-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-pipe-rfq-grid {\r\n    display: grid;\r\n    grid-template-columns: 1fr 1fr;\r\n    gap: 10px;\r\n  }\r\n\r\n  .zobai-pipe-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-pipe-btn-row {\r\n    display: flex;\r\n    flex-wrap: wrap;\r\n    gap: 14px;\r\n  }\r\n\r\n  .zobai-pipe-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-pipe-btn:hover {\r\n    transform: translateY(-2px);\r\n    opacity: 0.92;\r\n  }\r\n\r\n  .zobai-pipe-btn-primary {\r\n    background: #ffc400;\r\n    color: #18201f;\r\n  }\r\n\r\n  .zobai-pipe-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-pipe-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-pipe-span-4,\r\n    .zobai-pipe-span-5,\r\n    .zobai-pipe-span-6,\r\n    .zobai-pipe-span-7,\r\n    .zobai-pipe-span-12 {\r\n      grid-column: span 12;\r\n    }\r\n\r\n    .zobai-pipe-kpi,\r\n    .zobai-pipe-link-grid {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .zobai-pipe-rfq {\r\n      grid-template-columns: 1fr;\r\n    }\r\n  }\r\n\r\n  @media (max-width: 640px) {\r\n    .zobai-pipe-section {\r\n      padding: 58px 18px;\r\n    }\r\n\r\n    .zobai-pipe-card,\r\n    .zobai-pipe-hero-panel,\r\n    .zobai-pipe-rfq,\r\n    .zobai-pipe-case {\r\n      padding: 26px 20px;\r\n      border-radius: 24px;\r\n    }\r\n\r\n    .zobai-pipe-flow-item {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .zobai-pipe-case-top {\r\n      flex-direction: column;\r\n    }\r\n\r\n    .zobai-pipe-case-data {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .zobai-pipe-rfq-grid {\r\n      grid-template-columns: 1fr;\r\n    }\r\n  }\r\n<\/style>\r\n\r\n<div class=\"zobai-pipe-page\">\r\n\r\n  <section class=\"zobai-pipe-section\">\r\n    <div class=\"zobai-pipe-hero-panel\">\r\n      <div class=\"zobai-pipe-eyebrow\">Pipeline Pressure Relief<\/div>\r\n      <h2>Pipeline Safety Valves for Liquid Transfer, Gas Regulation, Pump Stations and Thermal Relief<\/h2>\r\n      <p>\r\n        Pipeline safety valves and relief valves protect liquid transfer lines, blocked-in pipeline sections, pump discharge headers, compressor discharge lines, gas pressure regulating stations, metering skids, pig launchers, pig receivers, tank farm piping, chemical transfer lines, LNG transfer lines and utility pipelines from overpressure. Correct selection starts with pipeline design pressure or MAOP, set pressure, relief scenario, required capacity, liquid or gas properties, thermal expansion, pump or compressor maximum flow, surge risk, back pressure, discharge destination, material compatibility and required test documents.\r\n      <\/p>\r\n\r\n      <div class=\"zobai-pipe-kpi\">\r\n        <div class=\"zobai-pipe-kpi-item\">\r\n          <strong>Core Equipment<\/strong>\r\n          <span>Transfer lines, pump stations, compressor stations, PRV stations and pig traps<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-pipe-kpi-item\">\r\n          <strong>Key Relief Cases<\/strong>\r\n          <span>Thermal expansion, pump deadhead, regulator failure, blocked outlet and surge<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-pipe-kpi-item\">\r\n          <strong>Engineering Focus<\/strong>\r\n          <span>MAOP, set pressure, flow capacity, back pressure, liquid hammer and safe discharge<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-pipe-kpi-item\">\r\n          <strong>RFQ Output<\/strong>\r\n          <span>Datasheet, relief basis, capacity, material, calibration and test records<\/span>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-pipe-section zobai-pipe-section-soft\">\r\n    <div class=\"zobai-pipe-eyebrow\">Pipeline Applications<\/div>\r\n    <h2 class=\"zobai-pipe-title\">Where Safety Valves Are Used in Pipeline and Transfer Systems<\/h2>\r\n    <p class=\"zobai-pipe-lead\">\r\n      Pipeline pressure relief includes small thermal relief valves for blocked-in liquid sections, large relief valves for pump or compressor discharge protection, and pressure protection valves for gas pressure reducing and metering stations. The device type depends on whether the protected system is liquid, gas, cryogenic, corrosive, flammable, toxic or high-pressure service.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-pipe-grid\">\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-4\">\r\n        <h3>Liquid Transfer Pipelines<\/h3>\r\n        <p>\r\n          Used on crude oil, refined product, diesel, chemical, solvent, water, glycol and utility liquid lines. Relief review should include blocked-in thermal expansion, pump deadhead, surge, overfilling, valve closure and safe drain or return routing.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-4\">\r\n        <h3>Gas Transmission and Regulation Stations<\/h3>\r\n        <p>\r\n          Used on natural gas pipelines, pressure reducing stations, metering skids, city gate stations and fuel gas headers. Selection should review regulator failure, downstream MAOP, gas capacity, seat tightness and vent stack safety.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-4\">\r\n        <h3>Pump Stations and Loading Lines<\/h3>\r\n        <p>\r\n          Used on pump discharge headers, terminal loading lines, tank farm transfer systems and pipeline booster stations. Pump curve, deadhead pressure, minimum flow, surge relief and return-to-tank capacity should be reviewed.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-4\">\r\n        <h3>Compressor Stations and Gas Headers<\/h3>\r\n        <p>\r\n          Used on compressor discharge lines, interstage piping, aftercoolers, gas receivers and recycle headers. Compressor maximum flow, pulsation, vibration, flare back pressure and safe gas discharge are key selection factors.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-4\">\r\n        <h3>Pig Launchers, Receivers and Traps<\/h3>\r\n        <p>\r\n          Used on pigging stations, launcher barrels, receiver barrels, trap equalization lines and blowdown systems. Relief review should include isolation error, trapped pressure, liquid slug, blocked vent and safe depressurization path.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-4\">\r\n        <h3>Cryogenic and Specialty Pipelines<\/h3>\r\n        <p>\r\n          Used on LNG, liquid nitrogen, liquid oxygen, CO\u2082, ammonia and other specialty media lines. Low-temperature material, trapped liquid expansion, dry ice risk, oxygen cleanliness and safe venting must be reviewed.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-pipe-section\">\r\n    <div class=\"zobai-pipe-eyebrow\">Relief Case Analysis<\/div>\r\n    <h2 class=\"zobai-pipe-title\">Pipeline PSV Selection Starts With the Actual Overpressure Scenario<\/h2>\r\n    <p class=\"zobai-pipe-lead\">\r\n      Pipeline protection is usually driven by a specific operating failure: a closed valve, trapped liquid, pump deadhead, regulator failure, compressor discharge upset, thermal expansion, surge event or blocked vent path. The relief device must protect the weakest pressure boundary under the credible case.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-pipe-flow\">\r\n      <div class=\"zobai-pipe-flow-item\">\r\n        <div class=\"zobai-pipe-flow-num\">01<\/div>\r\n        <div>\r\n          <h3>Thermal Expansion of Blocked-In Liquid<\/h3>\r\n          <p>\r\n            Liquid trapped between two closed valves can expand as temperature rises. Even small temperature increases can create high pressure in liquid-full pipe sections, making thermal relief valves important for transfer lines, tank farm piping, heat traced lines and cryogenic liquid sections.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-flow-item\">\r\n        <div class=\"zobai-pipe-flow-num\">02<\/div>\r\n        <div>\r\n          <h3>Pump Deadhead or Blocked Discharge<\/h3>\r\n          <p>\r\n            A centrifugal, gear, screw, diaphragm or positive displacement pump can overpressure downstream piping when discharge is blocked. Relief sizing should use pump curve, maximum flow, deadhead pressure and return or drain destination.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-flow-item\">\r\n        <div class=\"zobai-pipe-flow-num\">03<\/div>\r\n        <div>\r\n          <h3>Gas Regulator Failure<\/h3>\r\n          <p>\r\n            A pressure reducing regulator can fail open and expose downstream piping to higher upstream pressure. The relief valve should protect the downstream MAOP, metering equipment, low-pressure header and connected users.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-flow-item\">\r\n        <div class=\"zobai-pipe-flow-num\">04<\/div>\r\n        <div>\r\n          <h3>Compressor Discharge Overpressure<\/h3>\r\n          <p>\r\n            Compressor control failure, blocked discharge, recycle valve failure or antisurge upset can raise gas pipeline pressure. Compressor maximum flow, gas properties, discharge temperature and flare or vent back pressure should be reviewed.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-flow-item\">\r\n        <div class=\"zobai-pipe-flow-num\">05<\/div>\r\n        <div>\r\n          <h3>Surge, Water Hammer or Rapid Valve Closure<\/h3>\r\n          <p>\r\n            Long liquid pipelines can experience pressure surge from pump trips, emergency shutdown valves, quick-closing loading arms or check valve slam. Surge relief valves, accumulators or control logic may be required in addition to standard PSVs.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-flow-item\">\r\n        <div class=\"zobai-pipe-flow-num\">06<\/div>\r\n        <div>\r\n          <h3>Pigging, Slugging and Trapped Pressure<\/h3>\r\n          <p>\r\n            Pig launchers, receivers and station piping can trap gas or liquid during isolation, equalization or blowdown. Relief selection should consider barrel volume, pressure equalization, slug carryover and safe depressurization.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-pipe-section zobai-pipe-section-soft\">\r\n    <div class=\"zobai-pipe-eyebrow\">Application Case Data<\/div>\r\n    <h2 class=\"zobai-pipe-title\">Pipeline Safety Valve Application Cases with Typical RFQ Data<\/h2>\r\n    <p class=\"zobai-pipe-lead\">\r\n      These cases show how pipeline relief requirements are commonly described before model selection. Final sizing must be confirmed by pipeline datasheet, design pressure or MAOP, fluid properties, pump or compressor data, verified relief calculation and site safety review.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-pipe-grid\">\r\n      <div class=\"zobai-pipe-case zobai-pipe-span-6\">\r\n        <div class=\"zobai-pipe-case-top\">\r\n          <h3>Case 1: Blocked-In Diesel Transfer Line Thermal Relief Valve<\/h3>\r\n          <span class=\"zobai-pipe-case-tag\">Thermal Relief<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-pipe-case-data\">\r\n          <div><b>Protected equipment:<\/b> Tank farm diesel transfer line<\/div>\r\n          <div><b>Medium:<\/b> Diesel fuel<\/div>\r\n          <div><b>Line rating:<\/b> PN16 or Class 150<\/div>\r\n          <div><b>Set pressure:<\/b> Below protected pipe design limit<\/div>\r\n          <div><b>Relief cause:<\/b> Blocked-in liquid thermal expansion<\/div>\r\n          <div><b>Relieving temperature:<\/b> Ambient solar heating condition<\/div>\r\n          <div><b>Discharge:<\/b> Return to tank or safe drain<\/div>\r\n          <div><b>Key review:<\/b> Liquid expansion, seat tightness, return line back pressure and material compatibility<\/div>\r\n        <\/div>\r\n        <p>\r\n          Thermal relief valves are often small, but they protect liquid-full piping from very high pressure. They should be installed at blocked-in sections where liquid can be trapped between closed valves.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-case zobai-pipe-span-6\">\r\n        <div class=\"zobai-pipe-case-top\">\r\n          <h3>Case 2: Crude Oil Pump Station Surge Relief Valve<\/h3>\r\n          <span class=\"zobai-pipe-case-tag\">Surge Protection<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-pipe-case-data\">\r\n          <div><b>Protected equipment:<\/b> Crude oil pipeline pump discharge header<\/div>\r\n          <div><b>Medium:<\/b> Crude oil<\/div>\r\n          <div><b>Normal pressure:<\/b> 35 barg<\/div>\r\n          <div><b>Set pressure:<\/b> Pipeline MAOP-based value<\/div>\r\n          <div><b>Relief cause:<\/b> Pump trip, rapid valve closure or discharge surge<\/div>\r\n          <div><b>Required data:<\/b> Pump curve, line profile, valve closure time and transient study<\/div>\r\n          <div><b>Discharge:<\/b> Surge relief tank or suction return<\/div>\r\n          <div><b>Key review:<\/b> Transient pressure, response speed, return capacity and liquid hammer<\/div>\r\n        <\/div>\r\n        <p>\r\n          Long liquid pipelines may require surge relief rather than a standard PSV alone. Surge cases should be confirmed by hydraulic transient analysis when rapid pressure waves can occur.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-case zobai-pipe-span-6\">\r\n        <div class=\"zobai-pipe-case-top\">\r\n          <h3>Case 3: Natural Gas Pressure Reducing Station Relief Valve<\/h3>\r\n          <span class=\"zobai-pipe-case-tag\">Regulator Failure<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-pipe-case-data\">\r\n          <div><b>Protected equipment:<\/b> Downstream gas distribution header<\/div>\r\n          <div><b>Medium:<\/b> Natural gas<\/div>\r\n          <div><b>Upstream pressure:<\/b> 40 barg<\/div>\r\n          <div><b>Downstream MAOP:<\/b> 8 barg<\/div>\r\n          <div><b>Set pressure:<\/b> Below downstream protection limit<\/div>\r\n          <div><b>Relief cause:<\/b> Pressure regulator failed open<\/div>\r\n          <div><b>Discharge:<\/b> Outdoor vent stack or relief header<\/div>\r\n          <div><b>Key review:<\/b> Gas capacity, regulator maximum flow, noise, vent dispersion and seat tightness<\/div>\r\n        <\/div>\r\n        <p>\r\n          Gas pipeline relief valves should be based on downstream MAOP and regulator failure flow. Vent stack location should be checked for ignition sources, air intakes and personnel exposure.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-case zobai-pipe-span-6\">\r\n        <div class=\"zobai-pipe-case-top\">\r\n          <h3>Case 4: LNG Transfer Line Thermal Relief Valve<\/h3>\r\n          <span class=\"zobai-pipe-case-tag\">Cryogenic Liquid<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-pipe-case-data\">\r\n          <div><b>Protected equipment:<\/b> Blocked-in LNG transfer line section<\/div>\r\n          <div><b>Medium:<\/b> Liquefied natural gas<\/div>\r\n          <div><b>Service temperature:<\/b> Approx. -162\u00b0C<\/div>\r\n          <div><b>Set pressure:<\/b> Below protected line design pressure<\/div>\r\n          <div><b>Relief cause:<\/b> Heat leak into trapped cryogenic liquid<\/div>\r\n          <div><b>Discharge:<\/b> BOG header, vent mast or safe recovery system<\/div>\r\n          <div><b>Material focus:<\/b> Low-temperature stainless steel<\/div>\r\n          <div><b>Key review:<\/b> Cryogenic toughness, outlet icing, gas dispersion and valve isolation procedure<\/div>\r\n        <\/div>\r\n        <p>\r\n          Cryogenic liquid expansion can generate severe pressure rise in blocked-in sections. The relief valve must use suitable low-temperature materials and discharge to an approved cold vapor route.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-case zobai-pipe-span-6\">\r\n        <div class=\"zobai-pipe-case-top\">\r\n          <h3>Case 5: Chemical Transfer Pipeline Corrosion-Resistant Relief Valve<\/h3>\r\n          <span class=\"zobai-pipe-case-tag\">Corrosive Liquid<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-pipe-case-data\">\r\n          <div><b>Protected equipment:<\/b> Acid or caustic transfer line<\/div>\r\n          <div><b>Medium:<\/b> Hydrochloric acid, caustic soda or specialty chemical<\/div>\r\n          <div><b>Line rating:<\/b> Project piping class<\/div>\r\n          <div><b>Set pressure:<\/b> Below protected piping design limit<\/div>\r\n          <div><b>Relief cause:<\/b> Pump deadhead, blocked outlet or thermal expansion<\/div>\r\n          <div><b>Discharge:<\/b> Chemical return tank, scrubber or safe containment<\/div>\r\n          <div><b>Material focus:<\/b> PTFE-lined, alloy, FRP\/PVC-compatible or stainless material<\/div>\r\n          <div><b>Key review:<\/b> Corrosion, crystallization, leakage, drainability and safe containment<\/div>\r\n        <\/div>\r\n        <p>\r\n          Corrosive pipeline relief must consider both liquid and vapor chemistry. Body, trim, seat, gasket and discharge piping materials should be selected from actual concentration and temperature.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-case zobai-pipe-span-6\">\r\n        <div class=\"zobai-pipe-case-top\">\r\n          <h3>Case 6: Pig Receiver Barrel Safety Valve<\/h3>\r\n          <span class=\"zobai-pipe-case-tag\">Pigging Station<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-pipe-case-data\">\r\n          <div><b>Protected equipment:<\/b> Pig receiver barrel and trap piping<\/div>\r\n          <div><b>Medium:<\/b> Natural gas, crude oil, condensate or multiphase fluid<\/div>\r\n          <div><b>Design pressure:<\/b> Pipeline station datasheet value<\/div>\r\n          <div><b>Set pressure:<\/b> Trap design pressure basis<\/div>\r\n          <div><b>Relief cause:<\/b> Isolation error, trapped pressure, slug carryover or blocked blowdown<\/div>\r\n          <div><b>Discharge:<\/b> Flare, vent stack, closed drain or blowdown system<\/div>\r\n          <div><b>Required data:<\/b> Trap volume, fluid phase, maximum pressure and depressurization route<\/div>\r\n          <div><b>Key review:<\/b> Slug handling, liquid carryover, safe depressurization and maintenance access<\/div>\r\n        <\/div>\r\n        <p>\r\n          Pig traps are opened for operation and maintenance, so trapped pressure control is critical. Relief and blowdown routing should be reviewed together to avoid unsafe exposure during pigging.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-pipe-section\">\r\n    <div class=\"zobai-pipe-eyebrow\">Service Data Matrix<\/div>\r\n    <h2 class=\"zobai-pipe-title\">Pipeline Safety Valve Data Matrix<\/h2>\r\n\r\n    <div class=\"zobai-pipe-table-wrap\">\r\n      <table class=\"zobai-pipe-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Pipeline 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>Blocked-in liquid line<\/td>\r\n            <td>Diesel, crude oil, solvent, water, glycol, chemical liquid<\/td>\r\n            <td>Thermal expansion between closed valves<\/td>\r\n            <td>Liquid expansion, line rating, set pressure, return destination<\/td>\r\n            <td>Thermal relief valve with compatible seat and safe return route<\/td>\r\n            <td>Pipe rupture, flange leakage or gasket failure<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Pump discharge pipeline<\/td>\r\n            <td>Crude oil, refined product, chemical liquid, water<\/td>\r\n            <td>Pump deadhead, blocked outlet, surge<\/td>\r\n            <td>Pump curve, deadhead pressure, transient pressure, return capacity<\/td>\r\n            <td>Relief valve, surge relief valve or pump recirculation protection<\/td>\r\n            <td>Overpressure, liquid hammer or pump damage<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Gas PRV station<\/td>\r\n            <td>Natural gas, fuel gas, nitrogen, hydrogen<\/td>\r\n            <td>Regulator failure or downstream blockage<\/td>\r\n            <td>Downstream MAOP, regulator maximum flow, vent stack, noise<\/td>\r\n            <td>Gas safety relief valve with tight shutoff and safe venting<\/td>\r\n            <td>Downstream overpressure or unsafe gas release<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Compressor discharge line<\/td>\r\n            <td>Natural gas, refinery gas, CO\u2082, air, hydrogen<\/td>\r\n            <td>Blocked discharge, recycle failure, compressor control failure<\/td>\r\n            <td>Compressor maximum flow, temperature, pulsation, back pressure<\/td>\r\n            <td>Conventional, bellows or pilot valve depending on header conditions<\/td>\r\n            <td>Capacity loss, chatter, fatigue or flare overload<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Cryogenic transfer line<\/td>\r\n            <td>LNG, LN\u2082, LOX, liquid CO\u2082, cryogenic liquid<\/td>\r\n            <td>Blocked-in liquid heat leak, valve isolation, vaporization<\/td>\r\n            <td>Low-temperature material, trapped volume, outlet icing, vent routing<\/td>\r\n            <td>Cryogenic thermal relief valve with approved discharge route<\/td>\r\n            <td>Cold embrittlement, severe pressure rise or icy vent blockage<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Pig launcher \/ receiver<\/td>\r\n            <td>Gas, crude oil, condensate, multiphase fluid<\/td>\r\n            <td>Isolation error, trapped pressure, blocked blowdown, slug carryover<\/td>\r\n            <td>Trap volume, phase behavior, liquid carryover and blowdown route<\/td>\r\n            <td>PSV plus controlled depressurization and drain review<\/td>\r\n            <td>Unsafe opening, trapped energy release or liquid slug discharge<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-pipe-section zobai-pipe-section-soft\">\r\n    <div class=\"zobai-pipe-eyebrow\">Selection Framework<\/div>\r\n    <h2 class=\"zobai-pipe-title\">How to Specify a Pipeline Safety Valve Correctly<\/h2>\r\n\r\n    <div class=\"zobai-pipe-grid\">\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-6\">\r\n        <h3>1. Confirm the protected pipeline pressure boundary<\/h3>\r\n        <p>\r\n          Start with pipeline MAOP, design pressure, piping class, flange rating, station datasheet, weakest downstream equipment and applicable code basis. The set pressure should protect the lowest-rated pressure boundary.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-6\">\r\n        <h3>2. Define the governing relief scenario<\/h3>\r\n        <p>\r\n          Review thermal expansion, pump deadhead, compressor discharge, regulator failure, blocked outlet, surge, valve closure, overfilling, pigging isolation and fire exposure. The largest credible case controls capacity and valve type.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-6\">\r\n        <h3>3. Identify medium, phase and fluid properties<\/h3>\r\n        <p>\r\n          Gas, liquid, flashing liquid, cryogenic fluid and multiphase flow require different sizing inputs. Density, molecular weight, viscosity, vapor pressure, temperature and composition should be provided when available.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-6\">\r\n        <h3>4. Review pump, compressor or regulator data<\/h3>\r\n        <p>\r\n          For pump and compressor systems, use maximum credible equipment output rather than normal flow only. For regulator stations, confirm upstream pressure, downstream MAOP and failed-open regulator capacity.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-6\">\r\n        <h3>5. Check back pressure and discharge destination<\/h3>\r\n        <p>\r\n          Relief may discharge to tank, suction line, flare, vent stack, closed drain, scrubber, vapor recovery or BOG header. Back pressure, noise, reaction force, gas dispersion and liquid containment must be reviewed.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-6\">\r\n        <h3>6. Confirm material and documentation<\/h3>\r\n        <p>\r\n          Body, trim, spring, gasket, bellows and soft seat materials should match corrosive liquid, sour gas, hydrogen, oxygen, cryogenic fluid, ammonia, CO\u2082 or hydrocarbon service. Required test documents should be confirmed before production.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-pipe-section\">\r\n    <div class=\"zobai-pipe-eyebrow\">Installation & Discharge<\/div>\r\n    <h2 class=\"zobai-pipe-title\">Pipeline Relief Valves Must Be Reviewed With Surge, Back Pressure and Safe Discharge Routing<\/h2>\r\n\r\n    <div class=\"zobai-pipe-grid\">\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-7\">\r\n        <h3>Why pipeline installation changes valve performance<\/h3>\r\n        <p>\r\n          Pipeline relief devices are affected by line length, elevation profile, valve closure speed, liquid hammer, flare back pressure, return line pressure, static head, vibration, buried or outdoor service, ambient temperature and maintenance access. A valve that is correctly sized on paper may still fail to protect the system if inlet pressure loss is excessive or the discharge route is restricted.\r\n        <\/p>\r\n        <p>\r\n          Installation should review short inlet connection, no unauthorized isolation, outlet support, drainage, gas dispersion, flare or vent header back pressure, closed drain capacity, return line capacity, surge response, cryogenic vent icing and accessibility for calibration or replacement.\r\n        <\/p>\r\n        <div class=\"zobai-pipe-chip-row\">\r\n          <span class=\"zobai-pipe-chip\">Thermal Relief<\/span>\r\n          <span class=\"zobai-pipe-chip\">Pipeline MAOP<\/span>\r\n          <span class=\"zobai-pipe-chip\">Surge Relief<\/span>\r\n          <span class=\"zobai-pipe-chip\">Gas Regulator Failure<\/span>\r\n          <span class=\"zobai-pipe-chip\">Back Pressure<\/span>\r\n          <span class=\"zobai-pipe-chip\">Safe Discharge<\/span>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-5\">\r\n        <h3>Field installation checks<\/h3>\r\n        <ul class=\"zobai-pipe-list\">\r\n          <li>Confirm pipeline MAOP, piping class and weakest downstream pressure boundary.<\/li>\r\n          <li>Install thermal relief valves on liquid sections that can be blocked in.<\/li>\r\n          <li>Keep inlet pressure loss within the project design limit.<\/li>\r\n          <li>Do not install unauthorized isolation valves between protected line and relief device.<\/li>\r\n          <li>Support discharge piping without loading the valve body.<\/li>\r\n          <li>Route gas, flammable vapor, toxic vapor and corrosive discharge to approved safe locations.<\/li>\r\n          <li>Review surge, liquid hammer, vibration and cyclic operation before final valve location is approved.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-pipe-section zobai-pipe-section-soft\">\r\n    <div class=\"zobai-pipe-eyebrow\">Standards & Documentation<\/div>\r\n    <h2 class=\"zobai-pipe-title\">Standards and Documents to Confirm Before Ordering<\/h2>\r\n\r\n    <div class=\"zobai-pipe-grid\">\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-6\">\r\n        <h3>Common pipeline and relief references<\/h3>\r\n        <p>\r\n          Pipeline relief specifications may reference ASME B31.3, ASME B31.4, ASME B31.8, API 520, API 521, API 526, API 527, ISO, EN, GB, local pipeline rules, owner specifications and station package standards. The applicable code basis should be confirmed before quotation.\r\n        <\/p>\r\n        <ul class=\"zobai-pipe-list\">\r\n          <li><a href=\"\/standards\/asme-b31-3\/\">ASME B31.3<\/a> for process piping in refineries, chemical plants, gas plants, utility systems and package skids.<\/li>\r\n          <li><a href=\"\/standards\/asme-b31-4\/\">ASME B31.4<\/a> for liquid and slurry pipeline transportation systems where specified by the project.<\/li>\r\n          <li><a href=\"\/standards\/asme-b31-8\/\">ASME B31.8<\/a> for gas transmission and distribution piping systems, including compressor, metering and regulation stations.<\/li>\r\n          <li><a href=\"\/standards\/api-520\/\">API 520<\/a> for pressure-relieving device sizing and selection reference where required by the project.<\/li>\r\n          <li><a href=\"\/standards\/api-521\/\">API 521<\/a> for pressure-relieving and depressuring system review in process and petroleum facilities.<\/li>\r\n          <li><a href=\"\/standards\/api-527\/\">API 527<\/a> when seat tightness testing is required by specification.<\/li>\r\n          <li>Owner specifications for surge relief, thermal relief, sour gas, hydrogen, oxygen, LNG, ammonia, CO\u2082 or corrosive pipeline service.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-6\">\r\n        <h3>Typical pipeline relief document package<\/h3>\r\n        <p>\r\n          Documentation should be agreed before manufacturing, especially for pipeline stations, pump skids, compressor skids, gas regulation stations, LNG transfer lines, pigging systems and chemical transfer packages.\r\n        <\/p>\r\n        <ul class=\"zobai-pipe-list\">\r\n          <li>Technical datasheet with model, size, orifice, set pressure and connection.<\/li>\r\n          <li>Sizing calculation or certified relieving capacity confirmation.<\/li>\r\n          <li>Set pressure calibration certificate.<\/li>\r\n          <li>Pressure test report and seat tightness test report when required.<\/li>\r\n          <li>Material certificate for pressure-retaining parts and trim when specified.<\/li>\r\n          <li>Special cleaning, degreasing, low-temperature, sour service or oxygen-clean record when specified.<\/li>\r\n          <li>General arrangement drawing, dimension, weight and discharge orientation.<\/li>\r\n          <li>Nameplate, tag number, inspection witness record and project marking confirmation.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-pipe-section\">\r\n    <div class=\"zobai-pipe-eyebrow\">RFQ Checklist<\/div>\r\n    <h2 class=\"zobai-pipe-title\">Pipeline Safety Valve RFQ Data Checklist<\/h2>\r\n\r\n    <div class=\"zobai-pipe-table-wrap\">\r\n      <table class=\"zobai-pipe-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>Pipeline service<\/td>\r\n            <td>Defines relief scenario, medium and valve configuration.<\/td>\r\n            <td>Liquid transfer, gas PRV station, compressor discharge, pump station, pig receiver<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Design pressure \/ MAOP<\/td>\r\n            <td>Defines the pressure boundary that must be protected.<\/td>\r\n            <td>16 barg, 45 barg, 100 barg, 150 psi, PN40, Class 300<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Set pressure<\/td>\r\n            <td>Defines valve opening pressure.<\/td>\r\n            <td>Below pipeline MAOP, downstream header limit, pump station protection value<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Relief scenario<\/td>\r\n            <td>Determines required relieving capacity and response requirement.<\/td>\r\n            <td>Thermal expansion, pump deadhead, regulator failure, blocked discharge, surge<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Medium and phase<\/td>\r\n            <td>Affects sizing, material, venting and discharge behavior.<\/td>\r\n            <td>Natural gas, crude oil, diesel, solvent, acid, LNG, CO\u2082, ammonia, multiphase fluid<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Required relieving capacity<\/td>\r\n            <td>Confirms whether the valve can protect the pipeline.<\/td>\r\n            <td>kg\/h, Nm\u00b3\/h, SCFM, m\u00b3\/h, GPM, pump curve, compressor map<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Relieving temperature<\/td>\r\n            <td>Affects material, spring, seat and pressure rating.<\/td>\r\n            <td>Ambient, 60\u00b0C, 120\u00b0C, -162\u00b0C LNG, low-temperature CO\u2082 condition<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Operating pressure<\/td>\r\n            <td>Confirms operating margin and leakage risk.<\/td>\r\n            <td>Normal pressure, maximum operating pressure, minimum suction pressure<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Back pressure<\/td>\r\n            <td>Influences valve capacity, stability and valve type.<\/td>\r\n            <td>Atmospheric vent, flare header, tank return, suction return, closed drain, BOG header<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Material \/ special service<\/td>\r\n            <td>Prevents corrosion, embrittlement, contamination or leakage.<\/td>\r\n            <td>316SS trim, low-temperature material, sour gas service, oxygen clean, PTFE seat<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Connection and rating<\/td>\r\n            <td>Ensures compatibility with station piping and pressure class.<\/td>\r\n            <td>RF flange, RTJ, NPT, welded end, Class 150\u20132500, PN16\u2013PN160<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Required documents<\/td>\r\n            <td>Avoids inspection, installation and commissioning delays.<\/td>\r\n            <td>Datasheet, drawing, MTC, calibration report, pressure test, capacity certificate<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <p class=\"zobai-pipe-note\">\r\n      Final selection must be confirmed by pipeline datasheet, MAOP or design pressure, fluid properties, pump or compressor data, regulator failure basis, applicable code, verified sizing basis and engineering review.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-pipe-section zobai-pipe-section-soft\">\r\n    <div class=\"zobai-pipe-eyebrow\">Selection Errors<\/div>\r\n    <h2 class=\"zobai-pipe-title\">Common Pipeline Safety Valve Selection Mistakes<\/h2>\r\n\r\n    <div class=\"zobai-pipe-grid\">\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-4\">\r\n        <h3>Ignoring blocked-in liquid thermal expansion<\/h3>\r\n        <p>\r\n          Liquid trapped between closed valves can generate high pressure during heating. Thermal relief is often required even when normal pipeline pressure looks low.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-4\">\r\n        <h3>Buying by pipe size only<\/h3>\r\n        <p>\r\n          Pipe size does not prove relief capacity. Pipeline relief should be checked against pump flow, compressor flow, regulator failure flow, thermal expansion or surge case.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-4\">\r\n        <h3>Using normal flow as relief flow<\/h3>\r\n        <p>\r\n          Pump deadhead, compressor blocked discharge and regulator failure can require a much larger relief rate than normal operating flow or average transfer rate.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-4\">\r\n        <h3>Ignoring surge and water hammer<\/h3>\r\n        <p>\r\n          Long liquid pipelines can experience transient pressure spikes from valve closure, pump trip or check valve slam. A normal PSV may not respond like a surge relief system.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-4\">\r\n        <h3>Venting gas to unsafe locations<\/h3>\r\n        <p>\r\n          Natural gas, hydrogen, CO\u2082, ammonia and oxygen discharge require safe venting. Vent height, gas dispersion, ignition sources and personnel access should be reviewed.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-card zobai-pipe-span-4\">\r\n        <h3>Ignoring back pressure from return or flare systems<\/h3>\r\n        <p>\r\n          A relief valve discharging to flare, tank return, closed drain or suction return may see back pressure that reduces capacity or causes unstable operation.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-pipe-section\">\r\n    <div class=\"zobai-pipe-eyebrow\">Related Engineering Resources<\/div>\r\n    <h2 class=\"zobai-pipe-title\">Continue Your Pipeline Pressure Relief Review<\/h2>\r\n    <p class=\"zobai-pipe-lead\">\r\n      These related pages help move from pipeline application requirements to detailed safety valve selection, sizing, medium-specific review and documentation preparation.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-pipe-link-grid\">\r\n      <a class=\"zobai-pipe-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-pipe-link-card\" href=\"\/engineering\/safety-valve-sizing\/\">\r\n        <strong>Safety Valve Sizing<\/strong>\r\n        <span>Review required capacity, orifice selection, pressure data and sizing inputs before RFQ.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-pipe-link-card\" href=\"\/applications\/thermal-relief\/\">\r\n        <strong>Thermal Relief Valves<\/strong>\r\n        <span>For blocked-in liquid sections, heat traced lines, tank farm piping and cryogenic transfer lines.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-pipe-link-card\" href=\"\/medium\/natural-gas\/\">\r\n        <strong>Natural Gas Safety Valves<\/strong>\r\n        <span>For gas pipelines, PRV stations, metering skids, vent stacks and fuel gas headers.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-pipe-link-card\" href=\"\/medium\/lng\/\">\r\n        <strong>LNG Safety Valves<\/strong>\r\n        <span>For cryogenic LNG transfer lines, thermal relief, BOG systems and low-temperature materials.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-pipe-link-card\" href=\"\/medium\/hydrogen\/\">\r\n        <strong>Hydrogen Safety Valves<\/strong>\r\n        <span>For hydrogen pipelines, compressor discharge, leakage control and ignition-safe venting.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-pipe-link-card\" href=\"\/applications\/corrosive-service\/\">\r\n        <strong>Corrosive Pipeline Service<\/strong>\r\n        <span>For acid transfer, caustic lines, solvent pipelines, lined valves and chemical containment.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-pipe-link-card\" href=\"\/applications\/high-back-pressure\/\">\r\n        <strong>High Back Pressure Service<\/strong>\r\n        <span>For pipeline PSVs discharging to flare headers, return lines, vapor recovery or closed drains.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-pipe-link-card\" href=\"\/equipment\/compressors\/\">\r\n        <strong>Compressor Safety Valves<\/strong>\r\n        <span>For compressor discharge lines, gas headers, interstage bottles, pulsation and vibration review.<\/span>\r\n      <\/a>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-pipe-section zobai-pipe-section-soft\">\r\n    <div class=\"zobai-pipe-eyebrow\">FAQ<\/div>\r\n    <h2 class=\"zobai-pipe-title\">Pipeline Safety Valve FAQ<\/h2>\r\n\r\n    <div class=\"zobai-pipe-accordion\" data-zobai-pipe-accordion>\r\n      <div class=\"zobai-pipe-acc-item is-open\">\r\n        <button class=\"zobai-pipe-acc-btn\" type=\"button\">What is the most common reason to install a relief valve on a pipeline? <span>+<\/span><\/button>\r\n        <div class=\"zobai-pipe-acc-body\">\r\n          One of the most common reasons is blocked-in liquid thermal expansion. When liquid is trapped between closed valves and temperature rises, pressure can increase quickly. Pump deadhead, regulator failure, compressor discharge overpressure and surge are also common pipeline relief cases.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-acc-item\">\r\n        <button class=\"zobai-pipe-acc-btn\" type=\"button\">Can a pipeline relief valve be selected by pipe size only? <span>+<\/span><\/button>\r\n        <div class=\"zobai-pipe-acc-body\">\r\n          No. Pipe size only confirms mechanical fit. The valve must also match set pressure, required relieving capacity, medium, phase, temperature, MAOP or design pressure, back pressure, material and required documents.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-acc-item\">\r\n        <button class=\"zobai-pipe-acc-btn\" type=\"button\">What data is required for a pipeline safety valve quotation? <span>+<\/span><\/button>\r\n        <div class=\"zobai-pipe-acc-body\">\r\n          Provide pipeline service, design pressure or MAOP, set pressure, relief scenario, medium and phase, required relieving capacity, relieving temperature, operating pressure, back pressure, material requirement, connection and required documents.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-acc-item\">\r\n        <button class=\"zobai-pipe-acc-btn\" type=\"button\">When is a surge relief valve needed instead of a normal PSV? <span>+<\/span><\/button>\r\n        <div class=\"zobai-pipe-acc-body\">\r\n          A surge relief valve should be reviewed when rapid valve closure, pump trip, check valve slam or long liquid pipeline transients can create short-duration pressure waves. Surge protection is normally based on hydraulic transient analysis.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-acc-item\">\r\n        <button class=\"zobai-pipe-acc-btn\" type=\"button\">Where should pipeline relief discharge be routed? <span>+<\/span><\/button>\r\n        <div class=\"zobai-pipe-acc-body\">\r\n          Discharge should be routed to a safe destination such as tank return, suction return, closed drain, flare, scrubber, vent stack, vapor recovery or BOG system. The correct route depends on medium toxicity, flammability, pressure, phase, temperature and environmental requirements.\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-pipe-section\">\r\n    <div class=\"zobai-pipe-rfq\">\r\n      <div>\r\n        <div class=\"zobai-pipe-eyebrow\">Engineering RFQ Support<\/div>\r\n        <h2>Prepare a Complete Pipeline PSV Datasheet Before Quotation<\/h2>\r\n        <p>\r\n          Send the pipeline service, MAOP or design pressure, set pressure, relief scenario, medium and phase, required capacity, relieving temperature, operating pressure, back pressure, discharge route, material requirement, connection standard and required documents. A complete datasheet helps avoid unsafe assumptions and speeds up engineering review.\r\n        <\/p>\r\n        <div class=\"zobai-pipe-btn-row\">\r\n          <a class=\"zobai-pipe-btn zobai-pipe-btn-primary\" href=\"\/contact\/\">Request Engineering Quote<\/a>\r\n          <a class=\"zobai-pipe-btn zobai-pipe-btn-secondary\" href=\"\/ask-an-engineer\/\">Ask an Engineer<\/a>\r\n          <a class=\"zobai-pipe-btn zobai-pipe-btn-secondary\" href=\"\/catalog-pdf\/\">Download Catalog PDF<\/a>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-pipe-rfq-box\">\r\n        <h3>Minimum RFQ data<\/h3>\r\n        <div class=\"zobai-pipe-rfq-grid\">\r\n          <div class=\"zobai-pipe-rfq-item\">Pipeline Service<\/div>\r\n          <div class=\"zobai-pipe-rfq-item\">Design Pressure \/ MAOP<\/div>\r\n          <div class=\"zobai-pipe-rfq-item\">Set Pressure<\/div>\r\n          <div class=\"zobai-pipe-rfq-item\">Relief Scenario<\/div>\r\n          <div class=\"zobai-pipe-rfq-item\">Medium \/ Phase<\/div>\r\n          <div class=\"zobai-pipe-rfq-item\">Required Capacity<\/div>\r\n          <div class=\"zobai-pipe-rfq-item\">Temperature<\/div>\r\n          <div class=\"zobai-pipe-rfq-item\">Back Pressure<\/div>\r\n          <div class=\"zobai-pipe-rfq-item\">Discharge Route<\/div>\r\n          <div class=\"zobai-pipe-rfq-item\">Material<\/div>\r\n          <div class=\"zobai-pipe-rfq-item\">Connection<\/div>\r\n          <div class=\"zobai-pipe-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-pipe-accordion]');\r\n    accordions.forEach(function (accordion) {\r\n      var items = accordion.querySelectorAll('.zobai-pipe-acc-item');\r\n\r\n      items.forEach(function (item) {\r\n        var button = item.querySelector('.zobai-pipe-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 reason to install a relief valve on a pipeline?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"One of the most common reasons is blocked-in liquid thermal expansion. When liquid is trapped between closed valves and temperature rises, pressure can increase quickly. Pump deadhead, regulator failure, compressor discharge overpressure and surge are also common pipeline relief cases.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Can a pipeline relief valve be selected by pipe size only?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"No. Pipe size only confirms mechanical fit. The valve must also match set pressure, required relieving capacity, medium, phase, temperature, MAOP or design pressure, back pressure, material and required documents.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What data is required for a pipeline safety valve quotation?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Provide pipeline service, design pressure or MAOP, set pressure, relief scenario, medium and phase, required relieving capacity, relieving temperature, operating pressure, back pressure, material requirement, connection and required documents.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"When is a surge relief valve needed instead of a normal PSV?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"A surge relief valve should be reviewed when rapid valve closure, pump trip, check valve slam or long liquid pipeline transients can create short-duration pressure waves. Surge protection is normally based on hydraulic transient analysis.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Where should pipeline relief discharge be routed?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Discharge should be routed to a safe destination such as tank return, suction return, closed drain, flare, scrubber, vent stack, vapor recovery or BOG system. The correct route depends on medium toxicity, flammability, pressure, phase, temperature and environmental requirements.\"\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-2b20942 e-con-full e-flex cmsmasters-block-default e-con e-parent\" data-id=\"2b20942\" 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-e91fe56 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=\"e91fe56\" 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-6ca65613 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6ca65613\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-320c4d00 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"320c4d00\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4152b281 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=\"4152b281\" 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-67f58a8 elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"67f58a8\" 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-6b155b64 elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"6b155b64\" 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-4bb32aae 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=\"4bb32aae\" 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-5b206f2a e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"5b206f2a\" 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-6058a75d e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6058a75d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-52ac5b7 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"52ac5b7\" 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-20e7af7e e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"20e7af7e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-62c37631 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"62c37631\" 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-61c5688b e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"61c5688b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-38d678e5 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"38d678e5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-14f30b56 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"14f30b56\" 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-2b84850 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"2b84850\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dcc1ddd cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"dcc1ddd\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;cms_transform_hover_type&quot;:&quot;element&quot;}\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/zobai.com\/fr\/applications\/pipelines\/\">\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-78658052 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"78658052\" 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-7a463c39 e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"7a463c39\" 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-4f6f23ef e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"4f6f23ef\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-3e8bf56b e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"3e8bf56b\" 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-4af73b16 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"4af73b16\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7231a080 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"7231a080\" 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-5da3388 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"5da3388\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-60973b1d e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"60973b1d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1c3cc952 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"1c3cc952\" 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-167e2481 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"167e2481\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-368fa48f cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"368fa48f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;cms_transform_hover_type&quot;:&quot;element&quot;}\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/zobai.com\/fr\/applications\/pipelines\/\">\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-73cdaa0c cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"73cdaa0c\" 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-59edb408 e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"59edb408\" 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-1e9800bb e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"1e9800bb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-15aa7be1 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"15aa7be1\" 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-6862c3d9 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6862c3d9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7cf7fe4a cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"7cf7fe4a\" 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-14685c79 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"14685c79\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-cf64d9 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"cf64d9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-47d6576 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"47d6576\" 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-4afc7810 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"4afc7810\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7cb9850b cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"7cb9850b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;cms_transform_hover_type&quot;:&quot;element&quot;}\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/zobai.com\/fr\/applications\/pipelines\/\">\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-43eb74f4 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"43eb74f4\" 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-70dd193f e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"70dd193f\" 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-354178e6 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"354178e6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7d5f8f0b e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"7d5f8f0b\" 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-66656188 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"66656188\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3e0b3663 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"3e0b3663\" 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-68fbea05 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"68fbea05\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-2f136814 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"2f136814\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4cd937c cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"4cd937c\" 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-39a44578 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"39a44578\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-79103b5d cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"79103b5d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;cms_transform_hover_type&quot;:&quot;element&quot;}\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/zobai.com\/fr\/applications\/pipelines\/\">\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-47ae8fca cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"47ae8fca\" 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 Pipeline Safety Valves for Liquid, Gas, Thermal Relief and Transfer Line Protection CONTACT SALES Pipeline Pressure Relief Pipeline Safety Valves for Liquid Transfer, Gas Regulation, Pump Stations and Thermal Relief Pipeline safety valves and relief valves protect liquid transfer lines, blocked-in pipeline sections, pump discharge headers, compressor discharge lines, gas pressure regulating stations, metering&#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-53158","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/pages\/53158","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/comments?post=53158"}],"version-history":[{"count":4,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/pages\/53158\/revisions"}],"predecessor-version":[{"id":53162,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/pages\/53158\/revisions\/53162"}],"up":[{"embeddable":true,"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/pages\/52780"}],"wp:attachment":[{"href":"https:\/\/zobai.com\/fr\/wp-json\/wp\/v2\/media?parent=53158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}