{"id":53163,"date":"2026-05-15T07:14:23","date_gmt":"2026-05-15T07:14:23","guid":{"rendered":"https:\/\/zobai.com\/?page_id=53163"},"modified":"2026-05-15T07:17:15","modified_gmt":"2026-05-15T07:17:15","slug":"heat-exchangers","status":"publish","type":"page","link":"https:\/\/zobai.com\/pt\/applications\/heat-exchangers\/","title":{"rendered":"Trocadores de Calor"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"53163\" class=\"elementor elementor-53163\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9da1f2c e-con-full e-flex cmsmasters-bg-hide-none cmsmasters-bg-hide-none cmsmasters-block-default e-con e-parent\" data-id=\"9da1f2c\" 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-1c6f8a72 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"1c6f8a72\" 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-6163d286 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=\"6163d286\" 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-5108cc5b elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"5108cc5b\" 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\">Heat Exchanger Safety Valves for Shell, Tube, Plate and Utility Side Protection<\/h1>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-65ad9cc1 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"65ad9cc1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2e65ff35 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=\"2e65ff35\" 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\/pt\/?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-33328bce e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"33328bce\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-77b3c022 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"77b3c022\" 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-98f4fea 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=\"98f4fea\" 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-7b43f1f5 e-con-full e-flex cmsmasters-block-default e-con e-parent\" data-id=\"7b43f1f5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2f633361 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-html\" data-id=\"2f633361\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>\r\n  .zobai-hex-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-hex-page * {\r\n    box-sizing: border-box;\r\n  }\r\n\r\n  .zobai-hex-section {\r\n    max-width: 100%;\r\n    margin: 0 auto;\r\n    padding: 88px 80px;\r\n  }\r\n\r\n  .zobai-hex-section-soft {\r\n    background: #f8faf9;\r\n  }\r\n\r\n  .zobai-hex-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-hex-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-hex-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-hex-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-hex-grid {\r\n    display: grid;\r\n    grid-template-columns: repeat(12, 1fr);\r\n    gap: 28px;\r\n  }\r\n\r\n  .zobai-hex-span-4 { grid-column: span 4; }\r\n  .zobai-hex-span-5 { grid-column: span 5; }\r\n  .zobai-hex-span-6 { grid-column: span 6; }\r\n  .zobai-hex-span-7 { grid-column: span 7; }\r\n  .zobai-hex-span-12 { grid-column: span 12; }\r\n\r\n  .zobai-hex-card,\r\n  .zobai-hex-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-hex-card h2,\r\n  .zobai-hex-card h3,\r\n  .zobai-hex-case h3 {\r\n    margin: 0 0 14px;\r\n    color: var(--z-ink);\r\n  }\r\n\r\n  .zobai-hex-card h3,\r\n  .zobai-hex-case h3 {\r\n    font-size: 24px;\r\n    line-height: 1.25;\r\n  }\r\n\r\n  .zobai-hex-card p,\r\n  .zobai-hex-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-hex-card p:last-child,\r\n  .zobai-hex-case p:last-child {\r\n    margin-bottom: 0;\r\n  }\r\n\r\n  .zobai-hex-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-hex-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-hex-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-hex-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-hex-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-hex-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-hex-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-hex-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-hex-flow {\r\n    display: grid;\r\n    gap: 16px;\r\n    margin-top: 28px;\r\n  }\r\n\r\n  .zobai-hex-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-hex-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-hex-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-hex-flow-item p {\r\n    margin: 0;\r\n    color: #4d5863;\r\n    line-height: 1.68;\r\n  }\r\n\r\n  .zobai-hex-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-hex-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-hex-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-hex-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-hex-table tr:nth-child(even) td {\r\n    background: #fbfcfc;\r\n  }\r\n\r\n  .zobai-hex-table tr:last-child td {\r\n    border-bottom: 0;\r\n  }\r\n\r\n  .zobai-hex-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-hex-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-hex-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-hex-case {\r\n    border-radius: 24px;\r\n    padding: 28px;\r\n  }\r\n\r\n  .zobai-hex-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-hex-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-hex-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-hex-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-hex-case-data b {\r\n    color: var(--z-ink);\r\n  }\r\n\r\n  .zobai-hex-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-hex-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-hex-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-hex-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-hex-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-hex-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-hex-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-hex-accordion {\r\n    display: grid;\r\n    gap: 14px;\r\n  }\r\n\r\n  .zobai-hex-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-hex-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-hex-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-hex-acc-item.is-open .zobai-hex-acc-btn span {\r\n    transform: rotate(45deg);\r\n  }\r\n\r\n  .zobai-hex-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-hex-acc-item.is-open .zobai-hex-acc-body {\r\n    display: block;\r\n  }\r\n\r\n  .zobai-hex-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-hex-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-hex-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-hex-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-hex-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-hex-rfq-grid {\r\n    display: grid;\r\n    grid-template-columns: 1fr 1fr;\r\n    gap: 10px;\r\n  }\r\n\r\n  .zobai-hex-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-hex-btn-row {\r\n    display: flex;\r\n    flex-wrap: wrap;\r\n    gap: 14px;\r\n  }\r\n\r\n  .zobai-hex-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-hex-btn:hover {\r\n    transform: translateY(-2px);\r\n    opacity: 0.92;\r\n  }\r\n\r\n  .zobai-hex-btn-primary {\r\n    background: #ffc400;\r\n    color: #18201f;\r\n  }\r\n\r\n  .zobai-hex-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-hex-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-hex-span-4,\r\n    .zobai-hex-span-5,\r\n    .zobai-hex-span-6,\r\n    .zobai-hex-span-7,\r\n    .zobai-hex-span-12 {\r\n      grid-column: span 12;\r\n    }\r\n\r\n    .zobai-hex-kpi,\r\n    .zobai-hex-link-grid {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .zobai-hex-rfq {\r\n      grid-template-columns: 1fr;\r\n    }\r\n  }\r\n\r\n  @media (max-width: 640px) {\r\n    .zobai-hex-section {\r\n      padding: 58px 18px;\r\n    }\r\n\r\n    .zobai-hex-card,\r\n    .zobai-hex-hero-panel,\r\n    .zobai-hex-rfq,\r\n    .zobai-hex-case {\r\n      padding: 26px 20px;\r\n      border-radius: 24px;\r\n    }\r\n\r\n    .zobai-hex-flow-item {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .zobai-hex-case-top {\r\n      flex-direction: column;\r\n    }\r\n\r\n    .zobai-hex-case-data {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .zobai-hex-rfq-grid {\r\n      grid-template-columns: 1fr;\r\n    }\r\n  }\r\n<\/style>\r\n\r\n<div class=\"zobai-hex-page\">\r\n\r\n  <section class=\"zobai-hex-section\">\r\n    <div class=\"zobai-hex-hero-panel\">\r\n      <div class=\"zobai-hex-eyebrow\">Heat Exchanger Pressure Relief<\/div>\r\n      <h2>Heat Exchanger Safety Valves for Shell Side, Tube Side, Reboiler, Condenser and Utility Protection<\/h2>\r\n      <p>\r\n        Heat exchanger safety valves protect shell-and-tube exchangers, plate heat exchangers, reboilers, condensers, vaporizers, steam heaters, hot water generators, oil coolers, aftercoolers, intercoolers and process heating or cooling packages from overpressure. Correct PSV or PRV selection starts with shell-side and tube-side MAWP, set pressure, design temperature, high-pressure side source, low-pressure side protection limit, tube rupture scenario, blocked outlet, thermal expansion, utility control failure, two-phase or flashing relief, discharge destination, back pressure, material compatibility and required test documentation.\r\n      <\/p>\r\n\r\n      <div class=\"zobai-hex-kpi\">\r\n        <div class=\"zobai-hex-kpi-item\">\r\n          <strong>Core Equipment<\/strong>\r\n          <span>Shell-and-tube, plate exchangers, reboilers, condensers, vaporizers and coolers<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hex-kpi-item\">\r\n          <strong>Key Relief Cases<\/strong>\r\n          <span>Tube rupture, thermal expansion, blocked outlet, control failure and fire case<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hex-kpi-item\">\r\n          <strong>Engineering Focus<\/strong>\r\n          <span>Shell\/tube MAWP, pressure differential, phase behavior, back pressure and discharge<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hex-kpi-item\">\r\n          <strong>RFQ Output<\/strong>\r\n          <span>Datasheet, relief basis, capacity, material, calibration and pressure test records<\/span>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hex-section zobai-hex-section-soft\">\r\n    <div class=\"zobai-hex-eyebrow\">Heat Exchanger Applications<\/div>\r\n    <h2 class=\"zobai-hex-title\">Where Safety Valves Are Used on Heat Exchanger Systems<\/h2>\r\n    <p class=\"zobai-hex-lead\">\r\n      Heat exchanger pressure relief is driven by the interaction between two sides of the exchanger. A high-pressure tube side can overpressure a low-pressure shell side after tube rupture. A blocked liquid side can overpressure from thermal expansion. A steam, hot oil or refrigerant utility side can also create pressure rise when controls fail.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-hex-grid\">\r\n      <div class=\"zobai-hex-card zobai-hex-span-4\">\r\n        <h3>Shell-and-Tube Heat Exchangers<\/h3>\r\n        <p>\r\n          Used in refinery, petrochemical, chemical, power, LNG, gas processing and utility systems. PSV selection should review shell-side MAWP, tube-side design pressure, tube rupture, blocked outlet, fire case, thermal expansion and discharge path.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-4\">\r\n        <h3>Plate Heat Exchangers<\/h3>\r\n        <p>\r\n          Used for water, glycol, oil, food, pharmaceutical, HVAC and process heating or cooling. Relief review should include trapped liquid expansion, gasket compatibility, rapid pressure rise, isolation valves and low-volume pressure protection.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-4\">\r\n        <h3>Reboilers and Vaporizers<\/h3>\r\n        <p>\r\n          Used on distillation columns, evaporation units, LNG vaporizers, solvent recovery and process heating systems. Key checks include vapor generation, blocked outlet, steam or hot oil failure, two-phase relief and flare back pressure.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-4\">\r\n        <h3>Condensers and Air Coolers<\/h3>\r\n        <p>\r\n          Used on overhead vapor systems, compressor aftercoolers, refrigeration condensers and process coolers. Selection should review cooling failure, blocked condensate outlet, vapor accumulation, tube rupture and liquid flooding.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-4\">\r\n        <h3>Steam Heaters and Hot Water Generators<\/h3>\r\n        <p>\r\n          Used where steam heats water, process liquid, glycol or cleaning fluid. Relief scenarios include steam control valve failure, tube rupture, trapped water expansion, blocked outlet and low-pressure side overpressure.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-4\">\r\n        <h3>Oil Coolers and Compressor Intercoolers<\/h3>\r\n        <p>\r\n          Used on lubrication oil coolers, hydraulic oil coolers, compressor intercoolers, aftercoolers and gas cooling packages. Relief review should include compressor discharge pressure, water-side tube rupture, oil expansion, fouling and vibration.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hex-section\">\r\n    <div class=\"zobai-hex-eyebrow\">Relief Case Analysis<\/div>\r\n    <h2 class=\"zobai-hex-title\">Heat Exchanger PSV Selection Starts With the Governing Overpressure Scenario<\/h2>\r\n    <p class=\"zobai-hex-lead\">\r\n      Heat exchangers can overpressure from internal failure, blocked flow, thermal expansion or utility control failure. The selected valve must protect the weaker side of the exchanger under the credible relief case, not simply match an existing nozzle or old nameplate.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-hex-flow\">\r\n      <div class=\"zobai-hex-flow-item\">\r\n        <div class=\"zobai-hex-flow-num\">01<\/div>\r\n        <div>\r\n          <h3>Tube Rupture From High-Pressure Side to Low-Pressure Side<\/h3>\r\n          <p>\r\n            If the high-pressure side leaks into a lower-pressure side, the low-pressure side may be exposed to a sudden inflow. Relief review should include pressure differential, fluid phase, exchanger volume, downstream path and whether full-bore or limited rupture is the design basis.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-flow-item\">\r\n        <div class=\"zobai-hex-flow-num\">02<\/div>\r\n        <div>\r\n          <h3>Thermal Expansion of Blocked-In Liquid<\/h3>\r\n          <p>\r\n            Liquid trapped in shell, tube bundle, exchanger channel, bypass line or connected piping can expand when heated. Thermal relief valves may be small, but they protect blocked-in volumes from very high pressure.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-flow-item\">\r\n        <div class=\"zobai-hex-flow-num\">03<\/div>\r\n        <div>\r\n          <h3>Blocked Outlet or Closed Downstream Valve<\/h3>\r\n          <p>\r\n            A pump, compressor, column, utility source or upstream pressure can continue feeding an exchanger while the outlet is blocked. Required capacity should be based on the maximum credible inflow or vapor generation.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-flow-item\">\r\n        <div class=\"zobai-hex-flow-num\">04<\/div>\r\n        <div>\r\n          <h3>Steam, Hot Oil or Utility Control Valve Failure<\/h3>\r\n          <p>\r\n            A failed-open steam, hot oil or thermal fluid control valve can overheat the process side and generate vapor. Relief sizing should review heat duty, vapor pressure, flashing, outlet restriction and discharge system capacity.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-flow-item\">\r\n        <div class=\"zobai-hex-flow-num\">05<\/div>\r\n        <div>\r\n          <h3>Cooling Failure, Condensation Loss or Vapor Accumulation<\/h3>\r\n          <p>\r\n            Condensers and coolers may lose heat removal during cooling water failure, air fan trip, fouling or blocked condensate outlet. Pressure can rise from vapor accumulation, flashing or loss of condensation.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-flow-item\">\r\n        <div class=\"zobai-hex-flow-num\">06<\/div>\r\n        <div>\r\n          <h3>External Fire Exposure<\/h3>\r\n          <p>\r\n            Hydrocarbon or solvent-filled exchangers may require fire-case relief review. Fire exposure can vaporize liquid inventory and create two-phase discharge, especially in reboilers, condensers, coolers and horizontal shell-side liquid service.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hex-section zobai-hex-section-soft\">\r\n    <div class=\"zobai-hex-eyebrow\">Application Case Data<\/div>\r\n    <h2 class=\"zobai-hex-title\">Heat Exchanger Safety Valve Application Cases with Typical RFQ Data<\/h2>\r\n    <p class=\"zobai-hex-lead\">\r\n      These cases show how heat exchanger relief requirements are commonly described before model selection. Final sizing must be confirmed by exchanger datasheet, shell\/tube design pressure, process conditions, applicable code, verified relief calculation and discharge system review.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-hex-grid\">\r\n      <div class=\"zobai-hex-case zobai-hex-span-6\">\r\n        <div class=\"zobai-hex-case-top\">\r\n          <h3>Case 1: Shell-Side PSV for Tube Rupture<\/h3>\r\n          <span class=\"zobai-hex-case-tag\">Tube Rupture<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hex-case-data\">\r\n          <div><b>Protected equipment:<\/b> Shell side of shell-and-tube exchanger<\/div>\r\n          <div><b>Low-pressure side:<\/b> Cooling water or process liquid<\/div>\r\n          <div><b>Shell-side MAWP:<\/b> 6 barg<\/div>\r\n          <div><b>Tube-side pressure:<\/b> 30 barg process stream<\/div>\r\n          <div><b>Set pressure:<\/b> 5.8 barg<\/div>\r\n          <div><b>Relief cause:<\/b> Tube rupture from high-pressure tube side<\/div>\r\n          <div><b>Discharge:<\/b> Safe drain, closed collection or relief header<\/div>\r\n          <div><b>Key review:<\/b> Pressure differential, transient flow, phase behavior and downstream disposal<\/div>\r\n        <\/div>\r\n        <p>\r\n          Tube rupture is one of the most important exchanger relief cases. The low-pressure side protection should be based on pressure differential, credible rupture area, fluid phase and the ability of the downstream system to handle the relief flow.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-case zobai-hex-span-6\">\r\n        <div class=\"zobai-hex-case-top\">\r\n          <h3>Case 2: Steam Heater Low-Pressure Water Side Relief<\/h3>\r\n          <span class=\"zobai-hex-case-tag\">Steam Control Failure<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hex-case-data\">\r\n          <div><b>Protected equipment:<\/b> Hot water generator or steam heater<\/div>\r\n          <div><b>Medium:<\/b> Water, steam and condensate<\/div>\r\n          <div><b>Water-side MAWP:<\/b> 10 barg<\/div>\r\n          <div><b>Steam supply:<\/b> 16 barg saturated steam<\/div>\r\n          <div><b>Set pressure:<\/b> Below water-side design pressure<\/div>\r\n          <div><b>Relief cause:<\/b> Steam control valve failure or tube leak<\/div>\r\n          <div><b>Discharge:<\/b> Safe drain or hot water relief header<\/div>\r\n          <div><b>Key review:<\/b> Steam-side pressure, flashing, thermal expansion and hot discharge safety<\/div>\r\n        <\/div>\r\n        <p>\r\n          Steam-heated exchangers can overpressure the water side from direct steam leakage or excessive heat input. Relief selection should consider both tube rupture and blocked-in hot water expansion.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-case zobai-hex-span-6\">\r\n        <div class=\"zobai-hex-case-top\">\r\n          <h3>Case 3: Reboiler PSV for Blocked Vapor Outlet<\/h3>\r\n          <span class=\"zobai-hex-case-tag\">Reboiler Relief<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hex-case-data\">\r\n          <div><b>Protected equipment:<\/b> Kettle reboiler or thermosiphon reboiler<\/div>\r\n          <div><b>Medium:<\/b> Hydrocarbon liquid, solvent vapor or process vapor<\/div>\r\n          <div><b>Normal pressure:<\/b> 5 barg<\/div>\r\n          <div><b>Set pressure:<\/b> Equipment MAWP-based value<\/div>\r\n          <div><b>Relieving temperature:<\/b> Bubble point or boiling condition<\/div>\r\n          <div><b>Relief cause:<\/b> Blocked vapor outlet or excessive heat input<\/div>\r\n          <div><b>Discharge:<\/b> Flare header, condenser, scrubber or closed collection<\/div>\r\n          <div><b>Key review:<\/b> Heat duty, vapor generation, two-phase risk and back pressure<\/div>\r\n        <\/div>\r\n        <p>\r\n          Reboiler relief may involve flashing liquid or two-phase discharge. The valve should be selected from heat input and vapor generation rather than normal operating vapor flow only.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-case zobai-hex-span-6\">\r\n        <div class=\"zobai-hex-case-top\">\r\n          <h3>Case 4: Plate Heat Exchanger Thermal Relief Valve<\/h3>\r\n          <span class=\"zobai-hex-case-tag\">Blocked-In Liquid<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hex-case-data\">\r\n          <div><b>Protected equipment:<\/b> Plate heat exchanger liquid side<\/div>\r\n          <div><b>Medium:<\/b> Water, glycol, CIP fluid or process liquid<\/div>\r\n          <div><b>Design pressure:<\/b> 10 barg<\/div>\r\n          <div><b>Set pressure:<\/b> Below plate\/gasket pressure limit<\/div>\r\n          <div><b>Relief cause:<\/b> Trapped liquid thermal expansion<\/div>\r\n          <div><b>Relieving temperature:<\/b> Hot utility or cleaning cycle temperature<\/div>\r\n          <div><b>Discharge:<\/b> Return line, drain or safe collection<\/div>\r\n          <div><b>Key review:<\/b> Gasket compatibility, small trapped volume, thermal expansion and seat tightness<\/div>\r\n        <\/div>\r\n        <p>\r\n          Plate heat exchangers have compact internal volumes, but blocked-in liquid can still generate high pressure. Thermal relief should be reviewed wherever isolation valves can trap liquid between hot and cold sides.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-case zobai-hex-span-6\">\r\n        <div class=\"zobai-hex-case-top\">\r\n          <h3>Case 5: Condenser Relief During Cooling Failure<\/h3>\r\n          <span class=\"zobai-hex-case-tag\">Cooling Failure<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hex-case-data\">\r\n          <div><b>Protected equipment:<\/b> Overhead condenser or air cooler outlet system<\/div>\r\n          <div><b>Medium:<\/b> Solvent vapor, hydrocarbon vapor or refrigerant<\/div>\r\n          <div><b>Normal pressure:<\/b> 1\u20138 barg service-dependent<\/div>\r\n          <div><b>Set pressure:<\/b> Protected equipment MAWP-based value<\/div>\r\n          <div><b>Relief cause:<\/b> Cooling water failure, air fan trip or blocked condensate outlet<\/div>\r\n          <div><b>Relieving condition:<\/b> Vapor accumulation or reduced condensation<\/div>\r\n          <div><b>Discharge:<\/b> Flare, vent header, scrubber or condenser bypass<\/div>\r\n          <div><b>Key review:<\/b> Vapor load, condensation loss, liquid flooding and back pressure<\/div>\r\n        <\/div>\r\n        <p>\r\n          Condensers can lose pressure control when heat removal fails. Relief review should include vapor load, condensate blockage, flooding, downstream restrictions and safe vapor discharge.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-case zobai-hex-span-6\">\r\n        <div class=\"zobai-hex-case-top\">\r\n          <h3>Case 6: Compressor Aftercooler Tube Rupture PSV<\/h3>\r\n          <span class=\"zobai-hex-case-tag\">Gas Cooler<\/span>\r\n        <\/div>\r\n        <div class=\"zobai-hex-case-data\">\r\n          <div><b>Protected equipment:<\/b> Water side or shell side of compressor aftercooler<\/div>\r\n          <div><b>Medium:<\/b> Compressed air, natural gas, hydrogen, cooling water or glycol<\/div>\r\n          <div><b>Gas-side pressure:<\/b> 20\u2013100 barg project-dependent<\/div>\r\n          <div><b>Cooling-side MAWP:<\/b> Lower pressure side value<\/div>\r\n          <div><b>Set pressure:<\/b> Below protected cooling-side limit<\/div>\r\n          <div><b>Relief cause:<\/b> Tube rupture from high-pressure gas side<\/div>\r\n          <div><b>Discharge:<\/b> Safe vent, drain or closed collection<\/div>\r\n          <div><b>Key review:<\/b> Gas capacity, water-side volume, pulsation, vibration and safe venting<\/div>\r\n        <\/div>\r\n        <p>\r\n          Compressor coolers can expose a low-pressure water or glycol side to high-pressure gas. Gas release location, vibration and possible liquid carryover should be reviewed before final valve selection.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hex-section\">\r\n    <div class=\"zobai-hex-eyebrow\">Service Data Matrix<\/div>\r\n    <h2 class=\"zobai-hex-title\">Heat Exchanger Safety Valve Data Matrix<\/h2>\r\n\r\n    <div class=\"zobai-hex-table-wrap\">\r\n      <table class=\"zobai-hex-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Heat Exchanger 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>Shell-and-tube exchanger<\/td>\r\n            <td>Process gas, liquid hydrocarbon, cooling water, steam, glycol<\/td>\r\n            <td>Tube rupture, blocked outlet, fire exposure<\/td>\r\n            <td>Shell\/tube MAWP, pressure differential, phase behavior and discharge route<\/td>\r\n            <td>PSV sized for governing side-to-side failure or blocked flow case<\/td>\r\n            <td>Low-pressure side rupture or unsafe process release<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Plate heat exchanger<\/td>\r\n            <td>Water, glycol, oil, CIP fluid, process liquid<\/td>\r\n            <td>Thermal expansion, blocked-in liquid, pump deadhead<\/td>\r\n            <td>Trapped volume, gasket rating, liquid expansion and return path<\/td>\r\n            <td>Thermal relief valve with compatible soft parts<\/td>\r\n            <td>Gasket blowout, plate damage or leakage<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Reboiler \/ vaporizer<\/td>\r\n            <td>Solvent, hydrocarbon, LPG, refrigerant, process liquid<\/td>\r\n            <td>Blocked vapor outlet, excessive heat input, fire case<\/td>\r\n            <td>Heat duty, vapor generation, flashing, two-phase risk and flare back pressure<\/td>\r\n            <td>PSV or rupture disc combination depending on fouling and phase behavior<\/td>\r\n            <td>Undersized valve or unstable two-phase relief<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Condenser \/ air cooler<\/td>\r\n            <td>Vapor, condensate, refrigerant, hydrocarbon gas<\/td>\r\n            <td>Cooling failure, blocked condensate outlet, vapor accumulation<\/td>\r\n            <td>Vapor load, heat removal loss, liquid flooding and vent header back pressure<\/td>\r\n            <td>Gas\/vapor PSV with safe discharge or closed relief connection<\/td>\r\n            <td>Overpressure during cooling failure or blocked condensate<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Steam heater<\/td>\r\n            <td>Steam, water, condensate, hot process liquid<\/td>\r\n            <td>Steam control failure, tube leak, trapped water expansion<\/td>\r\n            <td>Steam pressure, water-side MAWP, flashing and hot discharge safety<\/td>\r\n            <td>Steam\/water PSV or thermal relief valve based on case<\/td>\r\n            <td>Water-side overpressure or unsafe hot discharge<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Compressor cooler<\/td>\r\n            <td>Compressed air, hydrogen, natural gas, cooling water, glycol<\/td>\r\n            <td>Tube rupture, compressor overpressure, blocked cooling path<\/td>\r\n            <td>Gas-side pressure, cooler MAWP, gas capacity, vibration and venting<\/td>\r\n            <td>Gas PSV with supported piping and safe vent route<\/td>\r\n            <td>Cooling-side rupture or hazardous gas release<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hex-section zobai-hex-section-soft\">\r\n    <div class=\"zobai-hex-eyebrow\">Selection Framework<\/div>\r\n    <h2 class=\"zobai-hex-title\">How to Specify a Heat Exchanger Safety Valve Correctly<\/h2>\r\n\r\n    <div class=\"zobai-hex-grid\">\r\n      <div class=\"zobai-hex-card zobai-hex-span-6\">\r\n        <h3>1. Confirm shell-side and tube-side design limits<\/h3>\r\n        <p>\r\n          Start with exchanger datasheet, shell-side MAWP, tube-side MAWP, design temperature, test pressure, design code, flange rating, nozzle size and operating pressure. The valve must protect the lower-rated pressure boundary.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-6\">\r\n        <h3>2. Identify all credible relief scenarios<\/h3>\r\n        <p>\r\n          Review tube rupture, blocked outlet, trapped liquid thermal expansion, utility control failure, cooling failure, fire exposure, pump deadhead, vaporizer overheat and condensate outlet blockage. The governing case controls capacity.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-6\">\r\n        <h3>3. Define the high-pressure source<\/h3>\r\n        <p>\r\n          The high-pressure source may be steam, gas compressor discharge, pump discharge, process reactor pressure, refrigerant pressure, hot oil supply or upstream pipeline pressure. Source pressure and maximum flow decide the relief load.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-6\">\r\n        <h3>4. Confirm medium phase at relieving condition<\/h3>\r\n        <p>\r\n          Exchanger relief may be gas, vapor, liquid, flashing liquid, wet steam, condensate or two-phase mixture. Phase behavior affects sizing, valve type, outlet piping, reaction force and effluent handling.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-6\">\r\n        <h3>5. Review back pressure and discharge destination<\/h3>\r\n        <p>\r\n          Relief may discharge to atmosphere, drain, closed collection, flare, scrubber, condenser, hot water return, tank return or refrigerant relief header. Back pressure can affect capacity and may require a bellows balanced or pilot operated design.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-6\">\r\n        <h3>6. Confirm materials, corrosion and fouling risk<\/h3>\r\n        <p>\r\n          Body, trim, spring, bellows, gasket and soft seat materials should match steam, condensate, chloride water, hydrocarbons, acids, refrigerants, hydrogen, oxygen, glycol or thermal oil service. Fouling, scaling and freezing should also be reviewed.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hex-section\">\r\n    <div class=\"zobai-hex-eyebrow\">Installation & Discharge<\/div>\r\n    <h2 class=\"zobai-hex-title\">Heat Exchanger Relief Valves Must Be Reviewed With Inlet Piping, Outlet Piping and Effluent Handling<\/h2>\r\n\r\n    <div class=\"zobai-hex-grid\">\r\n      <div class=\"zobai-hex-card zobai-hex-span-7\">\r\n        <h3>Why exchanger installation changes valve performance<\/h3>\r\n        <p>\r\n          Heat exchanger relief valves are often installed on compact skids with short nozzles, isolation valves, bypass lines, drains, condensate pockets and shared relief headers. Poor installation can create excessive inlet pressure loss, blocked discharge, liquid pockets, unstable operation or unsafe release.\r\n        <\/p>\r\n        <p>\r\n          Exchanger PSV installation should review valve location, short inlet path, no unauthorized isolation, outlet pipe support, discharge reaction force, drainage, flare or relief header back pressure, scrubber pressure drop, thermal expansion, freezing, maintenance access and whether the valve protects the correct side of the exchanger.\r\n        <\/p>\r\n        <div class=\"zobai-hex-chip-row\">\r\n          <span class=\"zobai-hex-chip\">Tube Rupture<\/span>\r\n          <span class=\"zobai-hex-chip\">Thermal Relief<\/span>\r\n          <span class=\"zobai-hex-chip\">Shell \/ Tube MAWP<\/span>\r\n          <span class=\"zobai-hex-chip\">Two-Phase Relief<\/span>\r\n          <span class=\"zobai-hex-chip\">Back Pressure<\/span>\r\n          <span class=\"zobai-hex-chip\">Safe Discharge<\/span>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-5\">\r\n        <h3>Field installation checks<\/h3>\r\n        <ul class=\"zobai-hex-list\">\r\n          <li>Confirm which side of the exchanger is being protected.<\/li>\r\n          <li>Verify shell-side and tube-side MAWP before selecting set pressure.<\/li>\r\n          <li>Install thermal relief where liquid can be blocked in and heated.<\/li>\r\n          <li>Keep inlet pressure loss within the project design limit.<\/li>\r\n          <li>Support outlet piping without loading the valve body or exchanger nozzle.<\/li>\r\n          <li>Route steam, hot liquid, toxic vapor, flammable vapor or refrigerant to approved safe destinations.<\/li>\r\n          <li>Provide access for inspection, cleaning, calibration and valve replacement.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hex-section zobai-hex-section-soft\">\r\n    <div class=\"zobai-hex-eyebrow\">Standards & Documentation<\/div>\r\n    <h2 class=\"zobai-hex-title\">Standards and Documents to Confirm Before Ordering<\/h2>\r\n\r\n    <div class=\"zobai-hex-grid\">\r\n      <div class=\"zobai-hex-card zobai-hex-span-6\">\r\n        <h3>Common heat exchanger relief references<\/h3>\r\n        <p>\r\n          Heat exchanger relief specifications may reference ASME, API, TEMA, ISO, EN, GB, local pressure vessel rules, refrigeration codes, owner specifications and skid package standards. The applicable design and relief basis should be confirmed before quotation.\r\n        <\/p>\r\n        <ul class=\"zobai-hex-list\">\r\n          <li><a href=\"\/standards\/asme-section-viii\/\">ASME BPVC Section VIII<\/a> where the exchanger shell, channel or pressure part is treated as pressure vessel equipment.<\/li>\r\n          <li><a href=\"\/standards\/asme-b31-3\/\">ASME B31.3<\/a> where connected process piping and skid piping are specified under process piping rules.<\/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, including tube rupture and system-level relief scenarios.<\/li>\r\n          <li><a href=\"\/standards\/api-526\/\">API 526<\/a> when flanged steel pressure relief valve dimensions and ratings are specified.<\/li>\r\n          <li><a href=\"\/standards\/api-527\/\">API 527<\/a> when seat tightness testing is required by specification.<\/li>\r\n          <li><a href=\"\/standards\/tema\/\">TEMA<\/a> where shell-and-tube heat exchanger mechanical design, inspection and project specifications are referenced.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-6\">\r\n        <h3>Typical heat exchanger document package<\/h3>\r\n        <p>\r\n          Documentation should be agreed before manufacturing, especially for refinery exchangers, chemical process exchangers, steam heaters, reboilers, compressor coolers, refrigerant systems and packaged skids.\r\n        <\/p>\r\n        <ul class=\"zobai-hex-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>Tube rupture, thermal relief or blocked outlet relief basis when provided by buyer.<\/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, low-temperature, oxygen-clean, corrosion-resistant or sour service record when specified.<\/li>\r\n          <li>Nameplate, tag number, drawing, 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-hex-section\">\r\n    <div class=\"zobai-hex-eyebrow\">RFQ Checklist<\/div>\r\n    <h2 class=\"zobai-hex-title\">Heat Exchanger Safety Valve RFQ Data Checklist<\/h2>\r\n\r\n    <div class=\"zobai-hex-table-wrap\">\r\n      <table class=\"zobai-hex-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>Exchanger type<\/td>\r\n            <td>Defines geometry, relief case and protected side.<\/td>\r\n            <td>Shell-and-tube, plate, reboiler, condenser, vaporizer, aftercooler<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Protected side<\/td>\r\n            <td>Confirms whether shell side, tube side or connected piping is protected.<\/td>\r\n            <td>Shell side, tube side, water side, process side, utility side<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Shell-side and tube-side MAWP<\/td>\r\n            <td>Defines the pressure boundary and set pressure limit.<\/td>\r\n            <td>Shell MAWP 6 barg, tube MAWP 30 barg, design pressure 16 barg<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Set pressure<\/td>\r\n            <td>Defines valve opening pressure.<\/td>\r\n            <td>5.8 barg, 10 barg, 15 barg, 145 psi<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Relief scenario<\/td>\r\n            <td>Determines required capacity and valve type.<\/td>\r\n            <td>Tube rupture, thermal expansion, blocked outlet, steam control failure, cooling failure<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Medium and phase<\/td>\r\n            <td>Affects sizing, material, fouling and discharge behavior.<\/td>\r\n            <td>Steam, condensate, cooling water, hydrocarbon vapor, refrigerant, glycol, two-phase flow<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Required relieving capacity<\/td>\r\n            <td>Confirms whether the valve can protect the exchanger.<\/td>\r\n            <td>kg\/h, Nm\u00b3\/h, SCFM, L\/min, GPM, vapor generation rate, tube rupture flow<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Relieving temperature<\/td>\r\n            <td>Affects body rating, trim, spring, seat and material choice.<\/td>\r\n            <td>-196\u00b0C, ambient, 90\u00b0C, 180\u00b0C, 350\u00b0C, steam saturation temperature<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>High-pressure source data<\/td>\r\n            <td>Required for tube rupture and utility failure cases.<\/td>\r\n            <td>Steam supply pressure, compressor discharge pressure, pump curve, upstream source pressure<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Back pressure and discharge route<\/td>\r\n            <td>Influences capacity, stability and valve configuration.<\/td>\r\n            <td>Atmospheric vent, drain, flare, scrubber, closed collection, refrigerant header<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Material \/ special service<\/td>\r\n            <td>Prevents corrosion, embrittlement, leakage or contamination.<\/td>\r\n            <td>316SS, low-temperature material, PTFE seat, Hastelloy trim, oxygen clean, sour service<\/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-hex-note\">\r\n      Final selection must be confirmed by heat exchanger datasheet, shell-side and tube-side MAWP, process conditions, high-pressure source data, applicable code, verified sizing basis and engineering review.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hex-section zobai-hex-section-soft\">\r\n    <div class=\"zobai-hex-eyebrow\">Selection Errors<\/div>\r\n    <h2 class=\"zobai-hex-title\">Common Heat Exchanger Safety Valve Selection Mistakes<\/h2>\r\n\r\n    <div class=\"zobai-hex-grid\">\r\n      <div class=\"zobai-hex-card zobai-hex-span-4\">\r\n        <h3>Ignoring tube rupture<\/h3>\r\n        <p>\r\n          A high-pressure side can overpressure a low-pressure side after tube failure. Replacement by old valve size alone can miss the real pressure differential and transient flow.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-4\">\r\n        <h3>Protecting the wrong side<\/h3>\r\n        <p>\r\n          Heat exchangers have at least two pressure boundaries. The PSV must protect the side that can be overpressured, not simply the side with the easiest nozzle connection.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-4\">\r\n        <h3>Missing blocked-in liquid thermal relief<\/h3>\r\n        <p>\r\n          Isolated exchanger channels, bundles, plate sections and bypass lines can trap liquid. Heating from steam, sun, hot process fluid or CIP can create high pressure.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-4\">\r\n        <h3>Using normal duty instead of relief duty<\/h3>\r\n        <p>\r\n          Normal heat duty does not always represent blocked outlet, utility failure, cooling failure or tube rupture relief load. The governing case must be calculated separately.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-4\">\r\n        <h3>Ignoring two-phase or flashing relief<\/h3>\r\n        <p>\r\n          Reboilers, condensers and hot liquid exchangers may relieve flashing liquid or two-phase mixture. Gas-only sizing can understate the required valve and outlet capacity.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-card zobai-hex-span-4\">\r\n        <h3>Ignoring back pressure from flare or scrubber systems<\/h3>\r\n        <p>\r\n          Outlet back pressure can reduce capacity and cause instability. Heat exchanger PSVs discharging to flare, scrubber or refrigerant header should be reviewed for back pressure.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hex-section\">\r\n    <div class=\"zobai-hex-eyebrow\">Related Engineering Resources<\/div>\r\n    <h2 class=\"zobai-hex-title\">Continue Your Heat Exchanger Pressure Relief Review<\/h2>\r\n    <p class=\"zobai-hex-lead\">\r\n      These related pages help move from heat exchanger application requirements to detailed safety valve selection, sizing, tube rupture review, thermal relief and material compatibility.\r\n    <\/p>\r\n\r\n    <div class=\"zobai-hex-link-grid\">\r\n      <a class=\"zobai-hex-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-hex-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-hex-link-card\" href=\"\/engineering\/tube-rupture-relief\/\">\r\n        <strong>Tube Rupture Relief Review<\/strong>\r\n        <span>For high-pressure side to low-pressure side failure, transient flow and exchanger protection.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-hex-link-card\" href=\"\/applications\/thermal-relief\/\">\r\n        <strong>Thermal Relief Valves<\/strong>\r\n        <span>For blocked-in liquid, heat traced lines, exchanger channels, plate sections and bypass piping.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-hex-link-card\" href=\"\/medium\/steam\/\">\r\n        <strong>Steam Safety Valves<\/strong>\r\n        <span>For steam heaters, reboilers, clean steam generators and utility-side pressure protection.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-hex-link-card\" href=\"\/applications\/high-temperature\/\">\r\n        <strong>High Temperature Service<\/strong>\r\n        <span>For steam, hot oil, reboilers, vaporizers and elevated-temperature process exchangers.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-hex-link-card\" href=\"\/applications\/high-back-pressure\/\">\r\n        <strong>High Back Pressure Service<\/strong>\r\n        <span>For exchanger PSVs discharging to flare headers, scrubbers, condensers or closed collection systems.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-hex-link-card\" href=\"\/applications\/corrosive-service\/\">\r\n        <strong>Corrosive Service<\/strong>\r\n        <span>For chloride water, acids, sour service, seawater, solvents, refrigerants and special alloys.<\/span>\r\n      <\/a>\r\n\r\n      <a class=\"zobai-hex-link-card\" href=\"\/equipment\/pressure-vessels\/\">\r\n        <strong>Pressure Vessel Safety Valves<\/strong>\r\n        <span>For shell-side and tube-side pressure equipment, receivers, separators and coded vessels.<\/span>\r\n      <\/a>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hex-section zobai-hex-section-soft\">\r\n    <div class=\"zobai-hex-eyebrow\">FAQ<\/div>\r\n    <h2 class=\"zobai-hex-title\">Heat Exchanger Safety Valve FAQ<\/h2>\r\n\r\n    <div class=\"zobai-hex-accordion\" data-zobai-hex-accordion>\r\n      <div class=\"zobai-hex-acc-item is-open\">\r\n        <button class=\"zobai-hex-acc-btn\" type=\"button\">What is the most important relief case for heat exchangers? <span>+<\/span><\/button>\r\n        <div class=\"zobai-hex-acc-body\">\r\n          Tube rupture is often the most important case when one side of the exchanger has much higher pressure than the other. Thermal expansion, blocked outlet, steam control failure, cooling failure and fire exposure should also be reviewed.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-acc-item\">\r\n        <button class=\"zobai-hex-acc-btn\" type=\"button\">Can a heat exchanger PSV be selected by nozzle size only? <span>+<\/span><\/button>\r\n        <div class=\"zobai-hex-acc-body\">\r\n          No. Nozzle size only confirms mechanical fit. The valve must also match set pressure, required relieving capacity, protected side MAWP, medium phase, temperature, material, back pressure, discharge route and documentation requirements.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-acc-item\">\r\n        <button class=\"zobai-hex-acc-btn\" type=\"button\">When does a heat exchanger need a thermal relief valve? <span>+<\/span><\/button>\r\n        <div class=\"zobai-hex-acc-body\">\r\n          A thermal relief valve should be reviewed when liquid can be trapped between closed valves or inside an isolated exchanger section while heat input continues or temperature rises.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-acc-item\">\r\n        <button class=\"zobai-hex-acc-btn\" type=\"button\">What data is required for a heat exchanger safety valve quotation? <span>+<\/span><\/button>\r\n        <div class=\"zobai-hex-acc-body\">\r\n          Provide exchanger type, protected side, shell-side and tube-side MAWP, set pressure, relief scenario, medium and phase, required relieving capacity, relieving temperature, high-pressure source data, back pressure, material requirement, connection and required documents.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-acc-item\">\r\n        <button class=\"zobai-hex-acc-btn\" type=\"button\">When should a bellows balanced or pilot operated valve be reviewed? <span>+<\/span><\/button>\r\n        <div class=\"zobai-hex-acc-body\">\r\n          A bellows balanced or pilot operated valve should be reviewed when outlet back pressure, operating pressure margin, large required capacity, flare header connection or service condition makes a conventional spring-loaded valve unsuitable.\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"zobai-hex-section\">\r\n    <div class=\"zobai-hex-rfq\">\r\n      <div>\r\n        <div class=\"zobai-hex-eyebrow\">Engineering RFQ Support<\/div>\r\n        <h2>Prepare a Complete Heat Exchanger PSV Datasheet Before Quotation<\/h2>\r\n        <p>\r\n          Send the exchanger datasheet, protected side, shell-side and tube-side MAWP, set pressure, relief scenario, high-pressure source data, 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-hex-btn-row\">\r\n          <a class=\"zobai-hex-btn zobai-hex-btn-primary\" href=\"\/contact\/\">Request Engineering Quote<\/a>\r\n          <a class=\"zobai-hex-btn zobai-hex-btn-secondary\" href=\"\/ask-an-engineer\/\">Ask an Engineer<\/a>\r\n          <a class=\"zobai-hex-btn zobai-hex-btn-secondary\" href=\"\/catalog-pdf\/\">Download Catalog PDF<\/a>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"zobai-hex-rfq-box\">\r\n        <h3>Minimum RFQ data<\/h3>\r\n        <div class=\"zobai-hex-rfq-grid\">\r\n          <div class=\"zobai-hex-rfq-item\">Exchanger Type<\/div>\r\n          <div class=\"zobai-hex-rfq-item\">Protected Side<\/div>\r\n          <div class=\"zobai-hex-rfq-item\">Shell \/ Tube MAWP<\/div>\r\n          <div class=\"zobai-hex-rfq-item\">Set Pressure<\/div>\r\n          <div class=\"zobai-hex-rfq-item\">Relief Scenario<\/div>\r\n          <div class=\"zobai-hex-rfq-item\">Medium \/ Phase<\/div>\r\n          <div class=\"zobai-hex-rfq-item\">Required Capacity<\/div>\r\n          <div class=\"zobai-hex-rfq-item\">Temperature<\/div>\r\n          <div class=\"zobai-hex-rfq-item\">Back Pressure<\/div>\r\n          <div class=\"zobai-hex-rfq-item\">Discharge Route<\/div>\r\n          <div class=\"zobai-hex-rfq-item\">Material<\/div>\r\n          <div class=\"zobai-hex-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-hex-accordion]');\r\n    accordions.forEach(function (accordion) {\r\n      var items = accordion.querySelectorAll('.zobai-hex-acc-item');\r\n\r\n      items.forEach(function (item) {\r\n        var button = item.querySelector('.zobai-hex-acc-btn');\r\n        button.addEventListener('click', function () {\r\n          var isOpen = item.classList.contains('is-open');\r\n\r\n          items.forEach(function (i) {\r\n            i.classList.remove('is-open');\r\n          });\r\n\r\n          if (!isOpen) {\r\n            item.classList.add('is-open');\r\n          }\r\n        });\r\n      });\r\n    });\r\n  })();\r\n<\/script>\r\n\r\n<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"FAQPage\",\r\n  \"mainEntity\": [\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What is the most important relief case for heat exchangers?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Tube rupture is often the most important case when one side of the exchanger has much higher pressure than the other. 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elementor-element-6496c1dc 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=\"6496c1dc\" 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-9b0eeb7 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"9b0eeb7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-213029cc e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"213029cc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-16386937 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=\"16386937\" 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-4517c5a5 elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"4517c5a5\" 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-7273b079 elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"7273b079\" 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-6e357ddd 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=\"6e357ddd\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;carousel_items&quot;:[{&quot;slide_title&quot;:&quot;Slide #1&quot;,&quot;_id&quot;:&quot;01fe9a5&quot;},{&quot;slide_title&quot;:&quot;Slide #1&quot;,&quot;_id&quot;:&quot;945d82b&quot;},{&quot;slide_title&quot;:&quot;Slide #1&quot;,&quot;_id&quot;:&quot;8ec93bd&quot;},{&quot;slide_title&quot;:&quot;Slide #1&quot;,&quot;_id&quot;:&quot;ee987c2&quot;}],&quot;slides_to_show&quot;:&quot;4&quot;,&quot;slides_to_show_tablet&quot;:&quot;2&quot;,&quot;slides_to_show_mobile&quot;:&quot;1&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;autoplay_speed&quot;:5000,&quot;pause_on_hover&quot;:&quot;yes&quot;,&quot;pause_on_interaction&quot;:&quot;yes&quot;,&quot;infinite&quot;:&quot;yes&quot;,&quot;speed&quot;:500,&quot;offset_sides&quot;:&quot;none&quot;,&quot;arrows&quot;:&quot;yes&quot;,&quot;pagination&quot;:&quot;bullets&quot;,&quot;image_spacing_custom&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;image_spacing_custom_widescreen&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;image_spacing_custom_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;image_spacing_custom_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-carousel.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-carousel swiper\" role=\"region\" aria-roledescription=\"carousel\" aria-label=\"Carousel\" dir=\"ltr\">\n\t\t\t<div class=\"swiper-wrapper\" aria-live=\"off\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"1\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"1 de 1\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-93ece3c e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"93ece3c\" 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-6c96453a e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6c96453a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-16a18a07 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"16a18a07\" 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-534e5c28 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"534e5c28\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-742c074e cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"742c074e\" 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-4c0c5afd e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"4c0c5afd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-49202ef2 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"49202ef2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2e70f426 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"2e70f426\" 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-1c656831 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"1c656831\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-726114c2 cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"726114c2\" 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\/pt\/applications\/heat-exchangers\/\">\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-3b0d56e5 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"3b0d56e5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Pilot operated safety valves for higher-pressure service requiring tighter sealing and stable set pressure performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"2\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"1 de 1\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5eba644 e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"5eba644\" 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-3c43db7f e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"3c43db7f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7f24ea66 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"7f24ea66\" 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-4796eb1a e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"4796eb1a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f6d6557 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"f6d6557\" 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-59e35972 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"59e35972\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-1479ae0 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"1479ae0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-301849e9 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"301849e9\" 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-48d8ad3c e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"48d8ad3c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-aa66841 cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"aa66841\" 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\/pt\/applications\/heat-exchangers\/\">\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-4949a232 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"4949a232\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Bellows balanced safety valves for back pressure applications where stable performance is important.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"3\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"1 de 1\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-58fac4b8 e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"58fac4b8\" 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-33b6346 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"33b6346\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-1d94d883 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"1d94d883\" 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-24515aae e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"24515aae\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d37df05 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"d37df05\" 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-6ae8b15d e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6ae8b15d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-4f6c59c0 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"4f6c59c0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2cfb8079 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"2cfb8079\" 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-4c0c22cf e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"4c0c22cf\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5fcaf470 cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"5fcaf470\" 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\/pt\/applications\/heat-exchangers\/\">\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-41793602 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"41793602\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>High temperature steam safety valves for boilers, steam lines, and other elevated-temperature systems.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"4\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"1 de 1\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-392b2846 e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"392b2846\" 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-634afffd e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"634afffd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-43a419ce e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"43a419ce\" 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-502ee700 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"502ee700\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-64947c36 cmsmasters-clip-path-yes cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-image\" data-id=\"64947c36\" 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-1a3c7cd2 e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"1a3c7cd2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-6bf6557c e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"6bf6557c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-253422a4 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-heading\" data-id=\"253422a4\" 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-ba50c0c e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"ba50c0c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6c8063fe cmsmasters-effect cmsmasters-effect-type-transform cmsmasters-effect-hover-type-element cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-button\" data-id=\"6c8063fe\" 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\/pt\/applications\/heat-exchangers\/\">\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-1cae726f cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"1cae726f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Sanitary safety valves for hygienic process lines and cleaning systems requiring cleanable pressure protection.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-swiper-button elementor-swiper-button-prev\" role=\"button\" tabindex=\"0\" aria-label=\"Anterior\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-chevron-left\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M646 125C629 125 613 133 604 142L308 442C296 454 292 471 292 487 292 504 296 521 308 533L604 854C617 867 629 875 646 875 663 875 679 871 692 858 704 846 713 829 713 812 713 796 708 779 692 767L438 487 692 225C700 217 708 204 708 187 708 171 704 154 692 142 675 129 663 125 646 125Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t\t<div class=\"elementor-swiper-button elementor-swiper-button-next\" role=\"button\" tabindex=\"0\" aria-label=\"Pr\u00f3ximo\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-chevron-right\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M696 533C708 521 713 504 713 487 713 471 708 454 696 446L400 146C388 133 375 125 354 125 338 125 325 129 313 142 300 154 292 171 292 187 292 204 296 221 308 233L563 492 304 771C292 783 288 800 288 817 288 833 296 850 308 863 321 871 338 875 354 875 371 875 388 867 400 854L696 533Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t\t\t\t<div class=\"swiper-pagination\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Home Heat Exchanger Safety Valves for Shell, Tube, Plate and Utility Side Protection CONTACT SALES Heat Exchanger Pressure Relief Heat Exchanger Safety Valves for Shell Side, Tube Side, Reboiler, Condenser and Utility Protection Heat exchanger safety valves protect shell-and-tube exchangers, plate heat exchangers, reboilers, condensers, vaporizers, steam heaters, hot water generators, oil coolers, aftercoolers, intercoolers&#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-53163","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/zobai.com\/pt\/wp-json\/wp\/v2\/pages\/53163","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zobai.com\/pt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/zobai.com\/pt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/zobai.com\/pt\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zobai.com\/pt\/wp-json\/wp\/v2\/comments?post=53163"}],"version-history":[{"count":4,"href":"https:\/\/zobai.com\/pt\/wp-json\/wp\/v2\/pages\/53163\/revisions"}],"predecessor-version":[{"id":53168,"href":"https:\/\/zobai.com\/pt\/wp-json\/wp\/v2\/pages\/53163\/revisions\/53168"}],"up":[{"embeddable":true,"href":"https:\/\/zobai.com\/pt\/wp-json\/wp\/v2\/pages\/52780"}],"wp:attachment":[{"href":"https:\/\/zobai.com\/pt\/wp-json\/wp\/v2\/media?parent=53163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}