{"id":4971,"date":"2019-06-23T14:22:15","date_gmt":"2019-06-23T14:22:15","guid":{"rendered":"https:\/\/www.stvvalves.com\/?p=4971"},"modified":"2025-08-10T09:04:20","modified_gmt":"2025-08-10T01:04:20","slug":"what-is-the-reason-for-the-forced-sealing-of-stainless-steel-forged-steel-valves","status":"publish","type":"post","link":"https:\/\/www.stvvalves.com\/ru\/what-is-the-reason-for-the-forced-sealing-of-stainless-steel-forged-steel-valves\/","title":{"rendered":"\u0412 \u0447\u0435\u043c \u043f\u0440\u0438\u0447\u0438\u043d\u0430 \u043f\u0440\u0438\u043d\u0443\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u0443\u043f\u043b\u043e\u0442\u043d\u0435\u043d\u0438\u044f \u043a\u043b\u0430\u043f\u0430\u043d\u043e\u0432 \u0438\u0437 \u043a\u043e\u0432\u0430\u043d\u043e\u0439 \u0441\u0442\u0430\u043b\u0438 \u0438\u0437 \u043d\u0435\u0440\u0436\u0430\u0432\u0435\u044e\u0449\u0435\u0439 \u0441\u0442\u0430\u043b\u0438?"},"content":{"rendered":"<p>\u041f\u0440\u0438\u0447\u0438\u043d\u0430, \u043f\u043e \u043a\u043e\u0442\u043e\u0440\u043e\u0439 <a href=\"https:\/\/www.stvvalves.com\/ru\/product\/class-800-forged-stainless-steel-gate-valve\/\">\u043a\u043b\u0430\u043f\u0430\u043d \u0438\u0437 \u043a\u043e\u0432\u0430\u043d\u043e\u0439 \u0441\u0442\u0430\u043b\u0438 \u0438\u0437 \u043d\u0435\u0440\u0436\u0430\u0432\u0435\u044e\u0449\u0435\u0439 \u0441\u0442\u0430\u043b\u0438<\/a> adopts the forced sealing is that when the stainless steel forged steel valve is closed, the external force is forced to press the ram to the valve seat to ensure the sealing of the sealing surface. Stainless steel forged steel valves should generally be installed horizontally in the pipeline. When the gate valve is closed, the sealing surface can be sealed only by the medium pressure, that is, the sealing surface of the ram is pressed against the valve seat on the other side by the medium pressure to ensure the sealing of the sealing surface, which is self-sealing<\/p>\r\n<p class=\"ds-markdown-paragraph\">The forced sealing of stainless steel forged steel valves is primarily implemented to ensure\u00a0<strong>absolute leak-tightness<\/strong>\u00a0under high-pressure, high-temperature, or corrosive conditions. Here are the key reasons:<\/p>\r\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.stvvalves.com\/ru\/what-is-the-reason-for-the-forced-sealing-of-stainless-steel-forged-steel-valves\/#1_High-Pressure_High-Temperature_Resistance\" >1.\u00a0High-Pressure &amp; High-Temperature Resistance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.stvvalves.com\/ru\/what-is-the-reason-for-the-forced-sealing-of-stainless-steel-forged-steel-valves\/#2_Prevention_of_Seat_Erosion\" >2.\u00a0Prevention of Seat Erosion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.stvvalves.com\/ru\/what-is-the-reason-for-the-forced-sealing-of-stainless-steel-forged-steel-valves\/#3_Zero-Leakage_Requirements\" >3.\u00a0Zero-Leakage Requirements<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.stvvalves.com\/ru\/what-is-the-reason-for-the-forced-sealing-of-stainless-steel-forged-steel-valves\/#4_Thermal_Mechanical_Stress_Compensation\" >4.\u00a0Thermal &amp; Mechanical Stress Compensation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.stvvalves.com\/ru\/what-is-the-reason-for-the-forced-sealing-of-stainless-steel-forged-steel-valves\/#5_Safety_Compliance\" >5.\u00a0Safety &amp; Compliance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.stvvalves.com\/ru\/what-is-the-reason-for-the-forced-sealing-of-stainless-steel-forged-steel-valves\/#Common_Forced_Sealing_Designs\" >Common Forced Sealing Designs:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.stvvalves.com\/ru\/what-is-the-reason-for-the-forced-sealing-of-stainless-steel-forged-steel-valves\/#Conclusion\" >Conclusion:<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"1_High-Pressure_High-Temperature_Resistance\"><\/span>1.\u00a0<strong>High-Pressure &amp; High-Temperature Resistance<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<ul>\r\n<li>\r\n<p class=\"ds-markdown-paragraph\">Forged steel valves are used in demanding environments (e.g., oil &amp; gas, petrochemicals, power plants).<\/p>\r\n<\/li>\r\n<li>\r\n<p class=\"ds-markdown-paragraph\"><strong>Forced sealing<\/strong>\u00a0(e.g., through a wedge or parallel disc design) ensures the valve remains sealed even under extreme pressure fluctuations or thermal expansion.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3><span class=\"ez-toc-section\" id=\"2_Prevention_of_Seat_Erosion\"><\/span>2.\u00a0<strong>Prevention of Seat Erosion<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<ul>\r\n<li>\r\n<p class=\"ds-markdown-paragraph\">In aggressive media (e.g., steam, acids, abrasive fluids),\u00a0<strong>soft-seated valves<\/strong>\u00a0may degrade over time.<\/p>\r\n<\/li>\r\n<li>\r\n<p class=\"ds-markdown-paragraph\">Forged steel valves often use\u00a0<strong>metal-to-metal sealing<\/strong>\u00a0(e.g., Stellite-hardened seats) with forced closure to maintain sealing integrity.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3><span class=\"ez-toc-section\" id=\"3_Zero-Leakage_Requirements\"><\/span>3.\u00a0<strong>Zero-Leakage Requirements<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<ul>\r\n<li>\r\n<p class=\"ds-markdown-paragraph\">Industries like LNG, nuclear, or chemical processing mandate\u00a0<strong>bubble-tight shutoff<\/strong>\u00a0(API 598\/ISO 15848 standards).<\/p>\r\n<\/li>\r\n<li>\r\n<p class=\"ds-markdown-paragraph\">Forced sealing (e.g., via\u00a0<strong>live-loaded packing<\/strong>\u00a0or\u00a0<strong>double-piston effect seats<\/strong>) compensates for wear and thermal cycling.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3><span class=\"ez-toc-section\" id=\"4_Thermal_Mechanical_Stress_Compensation\"><\/span>4.\u00a0<strong>Thermal &amp; Mechanical Stress Compensation<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<ul>\r\n<li>\r\n<p class=\"ds-markdown-paragraph\">Stainless steel expands\/contracts with temperature changes.<\/p>\r\n<\/li>\r\n<li>\r\n<p class=\"ds-markdown-paragraph\">Forced sealing mechanisms (e.g.,\u00a0<strong>flexible wedge gates<\/strong>\u00a0or\u00a0<strong>spring-loaded discs<\/strong>) adapt to prevent seat distortion.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3><span class=\"ez-toc-section\" id=\"5_Safety_Compliance\"><\/span>5.\u00a0<strong>Safety &amp; Compliance<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<ul>\r\n<li>\r\n<p class=\"ds-markdown-paragraph\">Standards like\u00a0<strong>\u0410\u0421\u041c\u042d \u041116.34<\/strong>\u00a0\u0438\u00a0<strong>API 6D<\/strong>\u00a0require valves to maintain sealing under test pressures (1.5x rated pressure).<\/p>\r\n<\/li>\r\n<li>\r\n<p class=\"ds-markdown-paragraph\">Forged steel construction + forced sealing ensures compliance with\u00a0<strong>fire-safe (API 607\/ISO 10497)<\/strong>\u00a0and fugitive emission (ISO 15848) norms.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3><span class=\"ez-toc-section\" id=\"Common_Forced_Sealing_Designs\"><\/span>Common Forced Sealing Designs:<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<ul>\r\n<li>\r\n<p class=\"ds-markdown-paragraph\"><strong>Gate Valves:<\/strong>\u00a0Wedge-and-seat forced closure.<\/p>\r\n<\/li>\r\n<li>\r\n<p class=\"ds-markdown-paragraph\"><strong>Globe Valves:<\/strong>\u00a0Plug-and-disc compression.<\/p>\r\n<\/li>\r\n<li>\r\n<p class=\"ds-markdown-paragraph\"><strong>Check Valves:<\/strong>\u00a0Spring-assisted sealing.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion:<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p class=\"ds-markdown-paragraph\">Forced sealing in stainless steel forged valves is critical for\u00a0<strong>safety, durability, and performance<\/strong>\u00a0in harsh conditions, preventing leaks that could lead to equipment failure or hazardous incidents.<\/p>\r\n<p class=\"ds-markdown-paragraph\">Would you like details on specific valve types or sealing mechanisms?<\/p>\r\n<div id=\"attachment_8245\" style=\"width: 610px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-8245\" class=\"wp-image-8245 size-full\" src=\"https:\/\/www.stvvalves.com\/wp-content\/uploads\/2019\/06\/china-F316L-gate-valves.jpg\" alt=\"china F316L gate valves Manufacture\" width=\"600\" height=\"800\" srcset=\"https:\/\/www.stvvalves.com\/wp-content\/uploads\/2019\/06\/china-F316L-gate-valves.jpg 600w, https:\/\/www.stvvalves.com\/wp-content\/uploads\/2019\/06\/china-F316L-gate-valves-225x300.jpg 225w, https:\/\/www.stvvalves.com\/wp-content\/uploads\/2019\/06\/china-F316L-gate-valves-9x12.jpg 9w, https:\/\/www.stvvalves.com\/wp-content\/uploads\/2019\/06\/china-F316L-gate-valves-529x705.jpg 529w, https:\/\/www.stvvalves.com\/wp-content\/uploads\/2019\/06\/china-F316L-gate-valves-450x600.jpg 450w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-8245\" class=\"wp-caption-text\">china F316L gate valves Manufacture<\/p><\/div>\r\n<p>.<\/p>","protected":false},"excerpt":{"rendered":"<p>The reason why the stainless steel forged steel valve adopts the forced sealing is that when the stainless steel forged steel valve is closed, the external force is forced to press the ram to the valve seat to ensure the sealing of the sealing surface. Stainless steel forged steel valves should generally be installed horizontally [&hellip;]<\/p>\n","protected":false},"author":290641,"featured_media":8245,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[955],"class_list":["post-4971","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-events","tag-stainless-steel-forged-steel-valves"],"_links":{"self":[{"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/posts\/4971","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/users\/290641"}],"replies":[{"embeddable":true,"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/comments?post=4971"}],"version-history":[{"count":3,"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/posts\/4971\/revisions"}],"predecessor-version":[{"id":8246,"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/posts\/4971\/revisions\/8246"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/media\/8245"}],"wp:attachment":[{"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/media?parent=4971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/categories?post=4971"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stvvalves.com\/ru\/wp-json\/wp\/v2\/tags?post=4971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}