{"id":52,"count":0,"description":"<div class=\"wanan-category-seo\">\n\n.wanan-category-seo{max-width:1200px;margin:0 auto 40px;padding:25px 30px;background:#f8fafc;border-left:4px solid #2563eb;border-radius:8px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;line-height:1.7;color:#334155}\n.wanan-category-seo h2{color:#1e293b;font-size:1.5em;margin-bottom:12px;border:none;padding:0}\n.wanan-category-seo h3{color:#334155;font-size:1.15em;margin:18px 0 8px}\n.wanan-category-seo p{margin:8px 0;color:#475569;font-size:0.95em}\n.wanan-category-seo ul{margin:6px 0;padding-left:20px}\n.wanan-category-seo li{margin:4px 0;color:#475569;font-size:0.93em}\n.wanan-category-seo strong{color:#1e293b}\n.wanan-category-seo a{color:#2563eb;text-decoration:none}\n.wanan-category-seo a:hover{text-decoration:underline}\n\nEmergency Pressure Relief Valves &amp; PRV Safety Systems\nWanan Technology provides <strong>pressure relief valves<\/strong> (PRV), <strong>safety relief valves<\/strong>, and <strong>pilot-operated relief valves<\/strong> designed as the last line of defense against catastrophic equipment overpressure. Our valves are manufactured in accordance with <strong>ASME Section VIII<\/strong>, <strong>API 520\/521<\/strong>, and <strong>ISO 4126<\/strong> international codes.\n\nHow Pressure Relief Valves Protect Your Facility\nA pressure relief valve automatically opens at a predetermined set pressure (called the \"set point\") to relieve excess pressure, then reseats once pressure returns to normal operating range. Three key parameters define every PRV application:\n\n<strong>Set Point:<\/strong> The pressure at which the valve begins to open. Typically set at 110% of maximum allowable working pressure (MAWP) for single-valve installations per ASME rules.\n<strong>Overpressure:<\/strong> The percentage above set point at which the valve reaches full lift. ASME permits 10% or 25% overpressure depending on fire vs non-fire contingencies.\n<strong>Backpressure:<\/strong> Downstream pressure that opposes valve opening. Superimposed backpressure (constant) and built-up backpressure (variable from flow) both affect valve performance and capacity.\n\n\nProduct Types Available\n\n<strong>Spring-Loaded Safety Valves:<\/strong> Conventional direct-acting design for clean service applications. Cost-effective solution for air, steam, water, and non-corrosive gas\/liquid service.\n<strong>Balanced Bellows Relief Valves:<\/strong> Built-in bellows compensates for backpressure effects. Recommended when backpressure exceeds 10-15% of set point.\n<strong>Pilot-Operated Relief Valves (POPRV):<\/strong> Pilot mechanism provides tight shutoff until set point, then rapid full opening. Offers smaller footprint, higher capacity, and more stable operation than spring-loaded alternatives.\n<strong>Rupture Disc Assemblies:<\/strong> Non-reclosing pressure relief devices for extreme overpressure events or as secondary protection behind PRVs. Available in metal, graphit, and composite materials.\n\n\nRequest specifications for any product in our <a href=\"\/ru\/%d0%bf%d1%80%d0%be%d0%b4%d1%83%d0%ba%d1%82-%d0%ba%d0%b0%d1%82%d0%b5%d0%b3%d0%be%d1%80%d0%b8%d1%8f\/%d0%ba%d0%b0%d1%82%d0%b5%d0%b3%d0%be%d1%80%d0%b8%d1%8f-%d0%b0%d0%b2%d0%b0%d1%80%d0%b8%d0%b9%d0%bd%d1%8b%d0%b5-%d0%bf%d1%80%d0%b5%d0%b4%d0%be%d1%85%d1%80%d0%b0%d0%bd%d0%b8%d1%82%d0%b5%d0%bb%d1%8c%d0%bd\/\">emergency relief valve catalog<\/a>.\n<\/div>","link":"https:\/\/wanantec.com\/ru\/%d0%bf%d1%80%d0%be%d0%b4%d1%83%d0%ba%d1%82-%d0%ba%d0%b0%d1%82%d0%b5%d0%b3%d0%be%d1%80%d0%b8%d1%8f\/%d0%ba%d0%b0%d1%82%d0%b5%d0%b3%d0%be%d1%80%d0%b8%d1%8f-%d0%b0%d0%b2%d0%b0%d1%80%d0%b8%d0%b9%d0%bd%d1%8b%d0%b5-%d0%bf%d1%80%d0%b5%d0%b4%d0%be%d1%85%d1%80%d0%b0%d0%bd%d0%b8%d1%82%d0%b5%d0%bb%d1%8c%d0%bd\/","name":"\u0410\u0432\u0430\u0440\u0438\u0439\u043d\u044b\u0435 \u043f\u0440\u0435\u0434\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u043a\u043b\u0430\u043f\u0430\u043d\u044b","slug":"%d0%ba%d0%b0%d1%82%d0%b5%d0%b3%d0%be%d1%80%d0%b8%d1%8f-%d0%b0%d0%b2%d0%b0%d1%80%d0%b8%d0%b9%d0%bd%d1%8b%d0%b5-%d0%bf%d1%80%d0%b5%d0%b4%d0%be%d1%85%d1%80%d0%b0%d0%bd%d0%b8%d1%82%d0%b5%d0%bb%d1%8c%d0%bd","taxonomy":"product_cat","parent":0,"meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/wanantec.com\/ru\/wp-json\/wp\/v2\/product_cat\/52","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wanantec.com\/ru\/wp-json\/wp\/v2\/product_cat"}],"about":[{"href":"https:\/\/wanantec.com\/ru\/wp-json\/wp\/v2\/taxonomies\/product_cat"}],"wp:post_type":[{"href":"https:\/\/wanantec.com\/ru\/wp-json\/wp\/v2\/product?product_cat=52"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}