{"id":1222,"date":"2026-10-07T06:57:00","date_gmt":"2026-10-07T06:57:00","guid":{"rendered":"https:\/\/wdlvalve.com\/?p=1222"},"modified":"2026-10-08T12:50:47","modified_gmt":"2026-10-08T12:50:47","slug":"%d0%b7%d0%b0%d0%b4%d0%b2%d0%b8%d0%b6%d0%ba%d0%b8-%d1%81-%d0%bc%d0%b0%d1%81%d0%bb%d1%8f%d0%bd%d1%8b%d0%bc-%d1%80%d1%8b%d1%87%d0%b0%d0%b3%d0%be%d0%bc-%d0%b4%d0%bb%d1%8f-%d1%81%d0%b8%d1%81%d1%82%d0%b5","status":"publish","type":"post","link":"https:\/\/wdlvalve.com\/ru\/%d0%b7%d0%b0%d0%b4%d0%b2%d0%b8%d0%b6%d0%ba%d0%b8-%d1%81-%d0%bc%d0%b0%d1%81%d0%bb%d1%8f%d0%bd%d1%8b%d0%bc-%d1%80%d1%8b%d1%87%d0%b0%d0%b3%d0%be%d0%bc-%d0%b4%d0%bb%d1%8f-%d1%81%d0%b8%d1%81%d1%82%d0%b5\/","title":{"rendered":"\u0417\u0430\u0434\u0432\u0438\u0436\u043a\u0430 \u0441 \u0440\u044b\u0447\u0430\u0433\u043e\u043c \u0434\u043b\u044f \u043c\u0430\u0437\u0443\u0442\u0430: 7 \u043e\u0441\u043d\u043e\u0432\u043d\u044b\u0445 \u043f\u0440\u043e\u0432\u0435\u0440\u043e\u043a \u0441\u0438\u0441\u0442\u0435\u043c \u043f\u043e\u0434\u0430\u0447\u0438 \u043c\u0430\u0437\u0443\u0442\u0430"},"content":{"rendered":"<article class=\"wdl-blog-article\"><strong>An oil lever gate valve<\/strong> is a mechanically operated quick-closing valve used to stop fuel oil flow when a fire or abnormal heat releases its trip mechanism. It is commonly installed in fuel oil supply lines serving boilers, burners, generators and day-tank systems. Because the closing action can be driven by a spring and fusible-link arrangement, the valve can perform its emergency shutoff function without relying on electrical power.<\/p>\n<p>This guide explains how the valve works, where it is used, how it differs from a conventional gate valve and what engineers should confirm before specifying one. For broader isolation-valve selection, see our <a href=\"https:\/\/wdlvalve.com\/ru\/%d0%bf%d1%80%d0%be%d0%b8%d0%b7%d0%b2%d0%be%d0%b4%d0%b8%d1%82%d0%b5%d0%bb%d1%8c-%d0%bf%d1%80%d0%be%d0%bc%d1%8b%d1%88%d0%bb%d0%b5%d0%bd%d0%bd%d1%8b%d1%85-%d0%b7%d0%b0%d0%b4%d0%b2%d0%b8%d0%b6%d0%b5%d0%ba\/\">\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c \u043f\u0440\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u044b\u0445 \u0437\u0430\u0434\u0432\u0438\u0436\u0435\u043a<\/a> overview. Final selection must follow the approved project documents, local code requirements and the authority having jurisdiction.<\/p>\n<h2>What Is an Oil Lever Gate Valve?<\/h2>\n<p>An oil lever gate valve combines a full-opening gate-valve flow path with a lever-operated quick-closing mechanism. During normal service, a cable or trip wire holds the valve open. One or more fusible links can be placed in the monitored area. If a link releases at its rated temperature, spring force drives the gate to the closed position and stops fuel flow.<\/p>\n<p>The arrangement provides a local, mechanical response to heat. A limit switch may also be specified to report valve position or initiate an alarm, but monitoring does not replace the mechanical closing function. The exact mechanism, mounting position, link rating and reset procedure depend on the approved valve model.<\/p>\n<h2>How Does an Oil Lever Gate Valve Work?<\/h2>\n<ol>\n<li><strong>Normal position:<\/strong> The operator opens the valve and secures the lever through the trip-wire arrangement.<\/li>\n<li><strong>Heat detection:<\/strong> A fusible link is installed at a location defined by the system design and applicable code.<\/li>\n<li><strong>Mechanical release:<\/strong> Heat causes the specified fusible link to separate or release.<\/li>\n<li><strong>Quick closure:<\/strong> The stored spring force moves the lever and closes the gate.<\/li>\n<li><strong>Inspection and reset:<\/strong> Qualified personnel investigate the event, inspect the system and reset the valve according to the manufacturer\u2019s instructions.<\/li>\n<\/ol>\n<p>The valve is normally selected for emergency isolation rather than routine throttling. Operating a gate valve partly open can expose the gate and seats to vibration, erosion and unstable flow.<\/p>\n<h2>Where Is This Valve Used in Fuel Oil Systems?<\/h2>\n<p>Oil lever gate valves are associated with fuel oil specialties used around liquid-fuel storage and combustion equipment. Typical locations may include the building fuel-line entrance, the tank outlet, the upstream side of a filter, the burner supply connection or another point identified by the project engineer and local code.<\/p>\n<p>Common services include:<\/p>\n<ul>\n<li>Boiler and oil-burner fuel supply lines<\/li>\n<li>Emergency generator fuel systems<\/li>\n<li>Main storage tank and day-tank piping<\/li>\n<li>Diesel, kerosene and compatible fuel oil service<\/li>\n<li>Mechanical rooms requiring heat-actuated fuel isolation<\/li>\n<\/ul>\n<p>Fuel compatibility must be confirmed for the actual product. Biodiesel content, additives, viscosity and operating temperature can affect the body material, seat design, packing and listing required for the valve.<\/p>\n<h2>Oil Lever Gate Valve vs. Other Shutoff Valves<\/h2>\n<div style=\"display: block; width: 100%; max-width: 100%; overflow-x: auto!important; -webkit-overflow-scrolling: touch; margin: 20px 0;\" tabindex=\"0\" role=\"region\" aria-label=\"Fuel oil valve comparison\">\n<table style=\"width: 100%; min-width: 760px; border: 1px solid #111!important; border-collapse: collapse!important; border-spacing: 0; background: #fff;\" border=\"1\" cellspacing=\"0\" cellpadding=\"10\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #111!important; background: #eef3f7; text-align: left; vertical-align: top;\" scope=\"col\">Valve type<\/th>\n<th style=\"border: 1px solid #111!important; background: #eef3f7; text-align: left; vertical-align: top;\" scope=\"col\">Primary function<\/th>\n<th style=\"border: 1px solid #111!important; background: #eef3f7; text-align: left; vertical-align: top;\" scope=\"col\">Closing method<\/th>\n<th style=\"border: 1px solid #111!important; background: #eef3f7; text-align: left; vertical-align: top;\" scope=\"col\">Main selection point<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Oil lever gate valve<\/td>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Emergency fuel isolation<\/td>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Mechanical lever, spring and release arrangement<\/td>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Approved fuel, listing, link rating and installation layout<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Conventional gate valve<\/td>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Manual pipeline isolation<\/td>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Handwheel, gear or actuator<\/td>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Pressure class, material, ends and shutoff requirement<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Ball valve<\/td>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Quarter-turn isolation<\/td>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Manual lever or actuator<\/td>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Seat compatibility, fire-safe requirements and bore<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Solenoid or motorized valve<\/td>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Automatic control or shutdown<\/td>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Electrical signal<\/td>\n<td style=\"border: 1px solid #111!important; vertical-align: top;\">Fail position, power supply, controls and approval<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Each valve has a different role. A control-system valve can provide remote shutdown, while a heat-actuated oil lever gate valve provides a local mechanical response. A project may require both functions rather than treating them as interchangeable.<\/p>\n<h2>7 Checks Before Selecting an Oil Lever Gate Valve<\/h2>\n<ol>\n<li><strong>Fuel type:<\/strong> Identify diesel, kerosene, fuel oil grade, biodiesel blend and all additives.<\/li>\n<li><strong>Operating conditions:<\/strong> Provide normal and maximum pressure, temperature, flow and suction conditions.<\/li>\n<li><strong>Valve size and connection:<\/strong> Confirm pipe size, threaded or flanged ends, pressure rating and available installation length.<\/li>\n<li><strong>Required listing:<\/strong> Identify the applicable product listing, code edition and authority having jurisdiction. Do not assume one approval covers every fuel or installation.<\/li>\n<li><strong>Release arrangement:<\/strong> Define the fusible-link rating, cable length, number of links and monitored locations according to the approved design.<\/li>\n<li><strong>Mounting and access:<\/strong> Verify pipe orientation, lever clearance, support, inspection access and the manufacturer\u2019s installation limits.<\/li>\n<li><strong>Monitoring:<\/strong> State whether a position switch, fire alarm signal, pump interlock or building-management indication is required.<\/li>\n<\/ol>\n<h2>What Standards and Project Requirements Apply?<\/h2>\n<p>The applicable requirements depend on the country, fuel, appliance and project. In the United States, <a href=\"https:\/\/www.nfpa.org\/codes-and-standards\/nfpa-31-standard-development\/31\" target=\"_blank\" rel=\"noopener noreferrer\">NFPA 31<\/a> addresses oil-burning equipment installations, while listed valves for diesel, biodiesel blends, kerosene and fuel oil may fall under UL 842B. The project engineer should confirm the adopted code edition, approved installation points and any requirements from the local authority.<\/p>\n<p>A procurement specification should identify the required listing, valve pressure and temperature limits, compatible fuels, leakage expectations, test certificates and installation accessories. Terms such as \u201cfire valve\u201d or \u201cquick-closing valve\u201d are not sufficient on their own because they can describe different products.<\/p>\n<h2>Installation and Maintenance Considerations<\/h2>\n<p>Install the valve in the approved orientation and leave enough room for the lever to travel fully. The trip wire should follow the manufacturer\u2019s routing instructions and remain free of obstruction, excessive friction and accidental loading. Fusible links must be placed at the specified locations and must not be painted, bypassed or replaced with an unapproved item.<\/p>\n<p>Inspection should confirm that the valve is accessible, the cable and links are intact, the lever moves freely, identification remains visible and no leakage is present at the body, ends or stem packing. Functional testing and reset intervals should follow the manufacturer\u2019s instructions, the site maintenance plan and local requirements.<\/p>\n<h2>Information to Include in an RFQ<\/h2>\n<div style=\"display: block; width: 100%; max-width: 100%; overflow-x: auto!important; -webkit-overflow-scrolling: touch; margin: 20px 0;\" tabindex=\"0\" role=\"region\" aria-label=\"Oil lever gate valve RFQ checklist\">\n<table style=\"width: 100%; min-width: 680px; border: 1px solid #111!important; border-collapse: collapse!important; border-spacing: 0; background: #fff;\" border=\"1\" cellspacing=\"0\" cellpadding=\"10\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #111!important; background: #eef3f7; text-align: left;\" scope=\"col\">RFQ item<\/th>\n<th style=\"border: 1px solid #111!important; background: #eef3f7; text-align: left;\" scope=\"col\">Information required<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #111!important;\">Service<\/td>\n<td style=\"border: 1px solid #111!important;\">Fuel grade, additives, viscosity and operating temperature<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #111!important;\">Valve<\/td>\n<td style=\"border: 1px solid #111!important;\">Size, pressure rating, body material and end connection<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #111!important;\">Safety function<\/td>\n<td style=\"border: 1px solid #111!important;\">Trip arrangement, fusible-link rating and required closing action<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #111!important;\">Compliance<\/td>\n<td style=\"border: 1px solid #111!important;\">Required listing, standard, code edition and certificates<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #111!important;\">Accessories<\/td>\n<td style=\"border: 1px solid #111!important;\">Cable kit, additional links, limit switch and mounting hardware<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>\u0427\u0430\u0441\u0442\u043e \u0437\u0430\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0435 \u0432\u043e\u043f\u0440\u043e\u0441\u044b<\/h2>\n<h3>Does an oil lever gate valve need electrical power?<\/h3>\n<p>A fully mechanical design can close through spring force when its fusible-link or trip arrangement releases. Optional switches may use electricity for status indication or interlocking.<\/p>\n<h3>Can the valve regulate fuel flow?<\/h3>\n<p>An oil lever gate valve is generally intended for isolation and emergency closure. It should not be used as a throttling valve unless the manufacturer specifically approves that duty.<\/p>\n<h3>Is every oil lever gate valve suitable for diesel and biodiesel?<\/h3>\n<p>No. Confirm the approved fuels, blend limits, materials and listing for the exact model. Fuel composition and temperature can change seal and packing requirements.<\/p>\n<h3>Can a standard gate valve replace a fusible-link safety valve?<\/h3>\n<p>A standard gate valve does not automatically provide heat-actuated closure or the required product listing. The specified safety function must be met by an approved assembly.<\/p>\n<h2>Discuss Your Fuel Oil Valve Requirements<\/h2>\n<p>WDL Valve supplies industrial <a href=\"https:\/\/wdlvalve.com\/ru\/product-category\/%d1%82%d0%b8%d0%bf%d1%8b-%d0%ba%d0%bb%d0%b0%d0%bf%d0%b0%d0%bd%d0%be%d0%b2\/gate-valves\/\">gate valves<\/a> and other isolation and non-return valve solutions for oil and industrial piping. For an application review, send the fluid, pressure, temperature, valve size, connection, required standard and safety function through the <a href=\"https:\/\/wdlvalve.com\/ru\/%d1%81%d0%b2%d1%8f%d0%b6%d0%b8%d1%82%d0%b5%d1%81%d1%8c-%d1%81-%d0%bd%d0%b0%d0%bc%d0%b8\/\">WDL Valve contact page<\/a>. Availability and compliance must be confirmed against the final project datasheet.<\/p>\n<hr \/>\n<p><strong>\u0410\u0432\u0442\u043e\u0440:<\/strong> Wong WP, Sales Manager, Xiamen WDL Valve Co., Ltd.<\/p>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>\u0423\u0437\u043d\u0430\u0439\u0442\u0435, \u043a\u0430\u043a \u043c\u0430\u0441\u043b\u044f\u043d\u044b\u0439 \u0437\u0430\u0434\u0432\u0438\u0436\u043a\u043e\u0432\u044b\u0439 \u043a\u043b\u0430\u043f\u0430\u043d \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u0435\u0442 \u043c\u0435\u0445\u0430\u043d\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u0430\u0432\u0430\u0440\u0438\u0439\u043d\u043e\u0435 \u043e\u0442\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 \u043f\u043e\u0434\u0430\u0447\u0438 \u0442\u043e\u043f\u043b\u0438\u0432\u0430, \u0433\u0434\u0435 \u043e\u043d \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0438 \u0447\u0442\u043e \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u043f\u0440\u043e\u0432\u0435\u0440\u0438\u0442\u044c \u043f\u0435\u0440\u0435\u0434 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u0437\u0430\u0434\u0430\u043d\u0438\u044f.<\/p>","protected":false},"author":1,"featured_media":1223,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[52],"tags":[],"class_list":["post-1222","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/wdlvalve.com\/ru\/wp-json\/wp\/v2\/posts\/1222","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wdlvalve.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wdlvalve.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wdlvalve.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wdlvalve.com\/ru\/wp-json\/wp\/v2\/comments?post=1222"}],"version-history":[{"count":3,"href":"https:\/\/wdlvalve.com\/ru\/wp-json\/wp\/v2\/posts\/1222\/revisions"}],"predecessor-version":[{"id":1333,"href":"https:\/\/wdlvalve.com\/ru\/wp-json\/wp\/v2\/posts\/1222\/revisions\/1333"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wdlvalve.com\/ru\/wp-json\/wp\/v2\/media\/1223"}],"wp:attachment":[{"href":"https:\/\/wdlvalve.com\/ru\/wp-json\/wp\/v2\/media?parent=1222"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wdlvalve.com\/ru\/wp-json\/wp\/v2\/categories?post=1222"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wdlvalve.com\/ru\/wp-json\/wp\/v2\/tags?post=1222"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}