{"id":3712,"date":"2025-04-27T15:58:34","date_gmt":"2025-04-27T07:58:34","guid":{"rendered":"https:\/\/wanantec.com\/?post_type=product&#038;p=3712"},"modified":"2026-04-28T10:26:14","modified_gmt":"2026-04-28T02:26:14","slug":"emergency-pressure-vacuum-relief-valve","status":"publish","type":"product","link":"https:\/\/wanantec.com\/zh\/%e7%94%a2%e5%93%81\/emergency-pressure-vacuum-relief-valve\/","title":{"rendered":"\u7dca\u6025\u58d3\u529b\u771f\u7a7a\u6d29\u58d3\u95a5"},"content":{"rendered":"<p>\u6d29\u6f0f\u9060\u4f4e\u65bc API2000 \u6a19\u6e96\uff0c\u4e26\u78ba\u4fdd\u9ad8\u8a2d\u5b9a\u7cbe\u6e96\u5ea6 (\u00b13%) \u3002.<\/p>\n<p>Suitable for corrosive conditions<\/p>\n<p>Full-start construction<\/p>\n<p>Certified displacement curves<\/p>\n<p>Every 7200 emergency relief valve passes rigorous scrutiny and leakage testing before it leaves the factory<\/p>\n<p>Supports ANSI, DIN, and HGT20592~20635-2009 flanges<\/p>","protected":false},"excerpt":{"rendered":"<div class=\"ace-line ace-line old-record-id-CysRfyDJXdYzHlcHpPYcnByxnth\">This valve is used to handle extreme overpressure and vacuum conditions that cannot be coped with by standard tank vents. When the tank pressure rises sharply to the set pressure due to emergencies such as fires, its hinge cover opens quickly for large-scale pressure relief; after the pressure is eliminated, the hinge mechanism ensures the cover resets accurately. At the same time, when excessive vacuum is generated inside the tank due to operations such as emergency vacuum pumping, the built-in spring-loaded vacuum valve internal part is lifted, and the accumulated vacuum is quickly released. This &#8220;dual-mode&#8221; protection mechanism enables it to not only meet the emergency relief needs caused by fires but also provide high-flow emergency vacuum release.<\/div>\n<h2 class=\"heading-2 ace-line old-record-id-JCqKfPpNUduf0AcljedcakJ2nyc\">Key Customer Value<\/h2>\n<ul class=\"list-bullet1\">\n<li class=\"ace-line ace-line old-record-id-SKUXfDxt0dw45bclq9Tc5Z9onEf\" data-list=\"bullet\">\n<div><strong>Dual Protection, All-in-One Valve<\/strong>: The pressure relief capacity strictly complies with the API 2000 standard, sufficient to cope with emergency relief caused by fires; the vacuum release function can handle emergency vacuum pumping conditions of media and provide high-flow intake. One valve solves two extreme risks, simplifying system design.<\/div>\n<\/li>\n<li class=\"ace-line ace-line old-record-id-YCXqfYGY5dvLYqc2VlmcsaOgnhc\" data-list=\"bullet\">\n<div><strong>Precise, Reliable and Ultra-Low Leakage<\/strong>: Adopting high-performance sealing and precision structure, its leakage rate is far below the API 2002 standard, and it ensures a high setting accuracy of\u00a0<strong>\u00b13%<\/strong>, maintaining tight sealing in non-emergency states to avoid unnecessary medium loss.<\/div>\n<\/li>\n<li class=\"ace-line ace-line old-record-id-HgXDfqsG8dHikccqqvacBVvRn8g\" data-list=\"bullet\">\n<div><strong>Robust, Durable and Easy to Maintain<\/strong>: It adopts a full-open structure, providing an unobstructed flow channel during relief. All components are made of high-quality corrosion-resistant materials (such as carbon steel, stainless steel, and special seals), suitable for harsh working conditions. All internal components can be replaced on-site, making maintenance simple and reducing the full life-cycle cost.<\/div>\n<\/li>\n<li class=\"ace-line ace-line old-record-id-HTuSfXNZadBByNcN36RcKaJEnef\" data-list=\"bullet\">\n<div><strong>Authoritative Certification and Reliable Design<\/strong>: Certified discharge curves are provided to offer a reliable engineering basis for safety system design. Each valve undergoes strict inspection and leakage testing before leaving the factory to ensure foolproof performance at critical moments. Flange connections support global mainstream standards such as ANSI, DIN, and HG\/T20592~20635-2009.<\/div>\n<\/li>\n<li class=\"ace-line ace-line old-record-id-Rb5ffo92RdW36Gc4C7tcTYNunQh\" data-list=\"bullet\">\n<div><strong>Multi-Functional Integration, Cost-Effective<\/strong>: In addition to being an ultimate safety device, this valve can also be used as an inlet and outlet for tank inspection and maintenance, serving multiple purposes and saving additional openings and costs.<\/div>\n<\/li>\n<\/ul>\n<h2 class=\"heading-2 ace-line old-record-id-R0rffMyudd2b0acVwwzcFpumnF9\">Typical Applications<\/h2>\n<ul class=\"list-bullet1\">\n<li class=\"ace-line ace-line old-record-id-WVe3fDXUFdTTeUcOjmIcDBjYnqh\" data-list=\"bullet\">\n<div>Large petroleum and chemical storage tanks that need to cope with both fire overpressure and emergency vacuum pumping risks.<\/div>\n<\/li>\n<li class=\"ace-line ace-line old-record-id-STLvfUPpAdPiqzcvnqaciJDpnQf\" data-list=\"bullet\">\n<div>Atmospheric dome-roof tanks, especially those equipped with nitrogen sealing systems.<\/div>\n<\/li>\n<li class=\"ace-line ace-line old-record-id-IP7YfeLeLdfQ6TcEfUGcGt46nSh\" data-list=\"bullet\">\n<div>Process tanks in the chemical and pharmaceutical industries where violent exothermic reactions or rapid condensation may occur.<\/div>\n<\/li>\n<li class=\"ace-line ace-line old-record-id-ONY9fdzjsdKCA1cZfsyc1tEQn2f\" data-list=\"bullet\">\n<div>Occasions where the capacity of standard breather valves is insufficient and the working conditions have both extreme positive pressure and vacuum risks<\/div>\n<\/li>\n<\/ul>","protected":false},"featured_media":3713,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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