{"id":16695,"date":"2022-06-22T15:24:22","date_gmt":"2022-06-22T15:24:22","guid":{"rendered":"https:\/\/zecovalve.com\/?p=16695"},"modified":"2022-09-07T01:32:40","modified_gmt":"2022-09-07T01:32:40","slug":"classification-of-fire-gate-valves-and-selection-tips","status":"publish","type":"post","link":"https:\/\/zecovalve.com\/tr\/classification-of-fire-gate-valves-and-selection-tips.html","title":{"rendered":"Yang\u0131n S\u00fcrg\u00fcl\u00fc Vanalar\u0131n S\u0131n\u0131fland\u0131r\u0131lmas\u0131 ve Se\u00e7im \u0130pu\u00e7lar\u0131"},"content":{"rendered":"<h2 class=\"wp-block-heading\"><strong>1. S\u00fcrg\u00fcl\u00fc Vana:<\/strong>\u00a0<\/h2>\n\n\n\n<p>Ko\u015fullar, nominal su \u00e7al\u0131\u015fma bas\u0131nc\u0131n\u0131n 175 PSI&#039;nin \u00fczerinde olmas\u0131 ve g\u00f6vde ve kapa\u011f\u0131n, di\u015fli ba\u011flant\u0131 yap\u0131s\u0131na sahip, ASTM standard\u0131na g\u00f6re d\u00f6kme bronz ala\u015f\u0131mdan yap\u0131lmas\u0131d\u0131r. Mevcut vanalar, s\u00fcrg\u00fcl\u00fc vana ve y\u00fcksek g\u00f6vdeli s\u00fcrg\u00fcl\u00fc vanad\u0131r. Ko\u015fullar, nominal su \u00e7al\u0131\u015fma bas\u0131nc\u0131n\u0131n 300 PSI&#039;dan az olmamas\u0131 ve kapak ve g\u00f6vdenin, flan\u015flar\u0131 250 veya 300 pound olacak \u015fekilde flan\u015f ba\u011flant\u0131s\u0131 yap\u0131s\u0131na sahip B standard\u0131na g\u00f6re d\u00f6kme demir ala\u015f\u0131m\u0131ndan yap\u0131lmas\u0131d\u0131r.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2. K\u00fcresel Vana:<\/strong>\u00a0<\/h2>\n\n\n\n<p>Nominal su \u00e7al\u0131\u015fma bas\u0131nc\u0131n\u0131n 175 PSI \u00fczerinde olmas\u0131, teflon oturakl\u0131 ve iklimden ba\u011f\u0131ms\u0131z di\u015fli akt\u00fcat\u00f6rlere sahip olmas\u0131, i\u00e7\/d\u0131\u015f mekan kullan\u0131m\u0131na uygun olmas\u0131 ve y\u00fckselen konum g\u00f6stergeli di\u015fli veya oluklu ba\u011flant\u0131 yap\u0131s\u0131na sahip olmas\u0131 \u015fart\u0131 aran\u0131r. ve iki dahili izleme anahtar\u0131. Mevcut standart port vanalar\u0131, DN65 veya \u00fczeri boru kontrol vanalar\u0131 olan ve vana ve ba\u011flant\u0131 par\u00e7as\u0131 \u00fcreticisinin standard\u0131na uygun olan k\u00fcresel vanalar (di\u015fli ba\u011flant\u0131lara sahip), k\u00fcresel vanalard\u0131r (yar\u0131kl\u0131 ba\u011flant\u0131lara sahip).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3. Blok \/ A\u00e7\u0131l\u0131 Vanalar:<\/strong>\u00a0<\/h2>\n\n\n\n<p>Ko\u015fullar, nominal su \u00e7al\u0131\u015fma bas\u0131nc\u0131n\u0131n 175 PSI&#039;dan az olmamas\u0131 ve vanan\u0131n lastik yuva diski ve di\u015fli u\u00e7lu ba\u011flant\u0131larla sa\u011flanmas\u0131 gerekti\u011fidir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>4. \u00c7ek Valf:<\/strong>\u00a0<\/h2>\n\n\n\n<p>Nominal su \u00e7al\u0131\u015fma bas\u0131nc\u0131n\u0131n 175 PSI&#039;dan az olmamas\u0131, vanan\u0131n lastik yatak diski ve di\u015fli u\u00e7lu ba\u011flant\u0131larla donat\u0131lm\u0131\u015f olmas\u0131, vanan\u0131n Y \u015feklinde ve yatay sal\u0131n\u0131ml\u0131 olmas\u0131 ve MSS standartlar\u0131na uygun olmas\u0131 \u015fart\u0131 vard\u0131r. Mevcut vanalar KT-403-W \u00e7ekvalflerdir. Bu \u00e7ek valfler, bronz i\u00e7 k\u0131s\u0131mlara ve kau\u00e7uk-metal yuvalara sahip olarak en az 175 PSI de\u011ferinde olmal\u0131d\u0131r.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-5-the-butterfly-valve\"><strong>5. Kelebek Vana:<\/strong>\u00a0<\/h2>\n\n\n\n<p>Ko\u015fullar, nominal su bas\u0131nc\u0131n\u0131n 175 PSI&#039;dan az olmamas\u0131, vanan\u0131n i\u00e7 ve d\u0131\u015f mekan kullan\u0131m\u0131nda iklimden ba\u011f\u0131ms\u0131z olmas\u0131 ve bir el di\u015fli akt\u00fcat\u00f6r\u00fcne, \u00e7\u0131k\u0131nt\u0131l\u0131 bir konum g\u00f6stergesine ve iki yerle\u015fik izleme anahtar\u0131na sahip olmas\u0131d\u0131r.<\/p>\n\n\n\n<!-- Andy:h-related-tags -->\n<h2 id=\"h-related-tags\">\u0130lgili Etiketler :<\/h2>\n<!-- \/Andy:h-related-tags -->\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/\">ZECO Valf<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/introduction-of-epdm-nbr-butterfly-valve-seat-industrial-valve-information-news-zeco-valve.html\/\">NBR Kelebek Vana<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/difference-between-gate-valves-and-ball-valves.html\/\">S\u00fcrg\u00fcl\u00fc Vana vs K\u00fcresel Vana<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/difference-between-gate-valves-and-ball-valves.html\/\">S\u00fcrg\u00fcl\u00fc Vana vs K\u00fcresel Vana<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/difference-between-gate-valve-and-butterfly-valve.html\/\">S\u00fcrg\u00fcl\u00fc Vana ve Kelebek Vana Aras\u0131ndaki Fark<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/urun\/manual-gate-valve\/\">Manuel Kumandal\u0131 S\u00fcrg\u00fcl\u00fc Vana \u00dcreticisi<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/advantages-and-disadvantages-of-globe-valves.html\/\">Glob Vana Nedir?<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/gate-valve-problems.html\/\">S\u00fcrg\u00fcl\u00fc Vana Onar\u0131m\u0131<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/the-function-of-globe-valve-in-pipeline-system.html\/\">Glob Vanalar Nedir?<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/tr\/tag\/shanghai-pressure-reducing-valve-factory\/\">\u015eangay Bas\u0131n\u00e7 D\u00fc\u015f\u00fcr\u00fcc\u00fc Vana Fabrikas\u0131<\/a>\n\n<\/div>","protected":false},"excerpt":{"rendered":"<p>1. S\u00fcrg\u00fcl\u00fc Vana: Ko\u015fullar, nominal su \u00e7al\u0131\u015fma bas\u0131nc\u0131n\u0131n 175 PSI&#039;nin \u00fczerinde olmas\u0131 ve g\u00f6vdenin ve\u2026 <a title=\"Yang\u0131n S\u00fcrg\u00fcl\u00fc Vanalar\u0131n S\u0131n\u0131fland\u0131r\u0131lmas\u0131 ve Se\u00e7im \u0130pu\u00e7lar\u0131\" class=\"read-more\" href=\"https:\/\/zecovalve.com\/tr\/classification-of-fire-gate-valves-and-selection-tips.html\" aria-label=\"Yang\u0131n S\u00fcrg\u00fcl\u00fc Vanalar\u0131n\u0131n S\u0131n\u0131fland\u0131r\u0131lmas\u0131 ve Se\u00e7im \u0130pu\u00e7lar\u0131 Hakk\u0131nda Daha Fazla Bilgi\">Daha fazla bilgi edinin<\/a><\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[1],"tags":[2204,1957,2343,3,1885,1884],"class_list":["post-16695","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-ball-valves","tag-butterfly-valve","tag-check-valve","tag-gate-valve","tag-gate-valve-wiki","tag-gate-valve-wikipedia","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":false,"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/tr\/author\/jerry"},"comment_info":0,"category_info":[{"term_id":1,"name":"Uncategorized","slug":"uncategorized","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":452,"filter":"raw","cat_ID":1,"category_count":452,"category_description":"","cat_name":"Uncategorized","category_nicename":"uncategorized","category_parent":0}],"tag_info":[{"term_id":2204,"name":"Ball Valves","slug":"ball-valves","term_group":0,"term_taxonomy_id":2204,"taxonomy":"post_tag","description":"","parent":0,"count":38,"filter":"raw"},{"term_id":1957,"name":"butterfly valve","slug":"butterfly-valve","term_group":0,"term_taxonomy_id":1957,"taxonomy":"post_tag","description":"","parent":0,"count":30,"filter":"raw"},{"term_id":2343,"name":"check valve","slug":"check-valve","term_group":0,"term_taxonomy_id":2343,"taxonomy":"post_tag","description":"","parent":0,"count":11,"filter":"raw"},{"term_id":3,"name":"gate valve","slug":"gate-valve","term_group":0,"term_taxonomy_id":3,"taxonomy":"post_tag","description":"","parent":0,"count":41,"filter":"raw"},{"term_id":1885,"name":"Gate Valve Wiki","slug":"gate-valve-wiki","term_group":0,"term_taxonomy_id":1885,"taxonomy":"post_tag","description":"<!-- wp:kadence\/tableofcontents {\"uniqueID\":\"_99f55c-5f\"} \/-->\r\n\r\n<!-- wp:generateblocks\/button-container {\"uniqueId\":\"6d8495a3\",\"isDynamic\":true,\"blockVersion\":2} -->\r\n<!-- wp:generateblocks\/button {\"uniqueId\":\"3d442e11\",\"hasUrl\":true,\"target\":true,\"backgroundColor\":\"#0366d6\",\"textColor\":\"#ffffff\",\"backgroundColorHover\":\"#222222\",\"textColorHover\":\"#ffffff\",\"paddingTop\":\"15\",\"paddingRight\":\"20\",\"paddingBottom\":\"15\",\"paddingLeft\":\"20\"} -->\r\n<a class=\"gb-button gb-button-3d442e11 gb-button-text\" href=\"mailto:commercial@zecovalve.com\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>GET GATE VALVE WIKI INFORMATION<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-what-is-a-gate-valve\">What is a Gate Valve?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nA gate valve, also known as a sluice valve, is a valve that opens by lifting a barrier (gate) out of the path of the fluid. Gate valves require very little space along the pipe axis and hardly restrict the flow of fluid when the gate is fully opened. The gate faces can be parallel but are most commonly wedge-shaped (in order to be able to apply pressure on the sealing surface).\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>How does a Gate Valve work?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nA gate valve is a control valve that either allows media to flow through unobstructed or stops the fluid flow. The main advantage of a gate valve is the straight-through unobstructed passageway, which induces minimal pressure loss over the valve. The unobstructed bore of a gate valve also allows for a pig's passage in cleaning pipe procedures, unlike butterfly valves. However, gate valves are slower than quarter-turn valves and should only be used in the fully open or closed position, not to regulate the flow. Automated gate valves exist with either an electric or pneumatic actuator, but a manual gate valve is cost-effective since gate valves are typically used infrequently. Gate valves are also commonly referred to as sluice gate valves.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Where are Gate Valves Used?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nGate valves are often used when minimum pressure loss and a free bore are needed. When fully open, a typical gate valve has no obstruction in the flow path resulting in a very low-pressure loss, and this design makes it possible to use a pipe-cleaning pig. A gate valve is a multiturn valve meaning that the operation of the valve is done by means of a threaded stem. As the valve has to turn multiple times to go from the open to the closed position, the slow operation also prevents water hammer effects.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Advantages of Gate Valves<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>The gate valve is very simple in design, relatively cheap, and easy to maintain.<\/li>\r\n \t<li>There is almost no pressure drop across the valve when the valve is in the fully open position.<\/li>\r\n \t<li>Replacement of the gate valve disc is usually not a difficult task.<\/li>\r\n \t<li>Replacement of the seat rings is usually not a difficult task.<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Disadvantages of Gate Valves<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>Gate valves are not well suited to throttling (any valve position between fully open and fully closed) as this creates turbulent flow and frictional losses. A valve left in the almost closed position will cause the flowing medium to flow at a very high velocity across the valve\u2019s seating surfaces, this can lead to damage to the surfaces (\u2018wire-drawing) and passing\/leaking of the valve.<\/li>\r\n \t<li>Gate valves create turbulent flow when throttled and experience excessive vibration as a result. This situation should be avoided to prevent damage from occurring to the valve packing and other internal parts.<\/li>\r\n \t<li>Compared to a globe valve, a gate valve\u2019s seating surfaces are more difficult to refurbish (if seat rings are not used)<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->","parent":0,"count":8,"filter":"raw"},{"term_id":1884,"name":"Gate Valve Wikipedia","slug":"gate-valve-wikipedia","term_group":0,"term_taxonomy_id":1884,"taxonomy":"post_tag","description":"<!-- wp:kadence\/tableofcontents {\"uniqueID\":\"_d2f005-e4\"} \/-->\r\n\r\n<!-- wp:generateblocks\/button-container {\"uniqueId\":\"6d8495a3\",\"isDynamic\":true,\"blockVersion\":2} -->\r\n<!-- wp:generateblocks\/button {\"uniqueId\":\"3d442e11\",\"hasUrl\":true,\"target\":true,\"backgroundColor\":\"#0366d6\",\"textColor\":\"#ffffff\",\"backgroundColorHover\":\"#222222\",\"textColorHover\":\"#ffffff\",\"paddingTop\":\"15\",\"paddingRight\":\"20\",\"paddingBottom\":\"15\",\"paddingLeft\":\"20\"} -->\r\n<a class=\"gb-button gb-button-3d442e11 gb-button-text\" href=\"mailto:commercial@zecovalve.com\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>GET GATE VALVE WIKIPEDIA INFORMATION<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-construction-of-gate-valves\">Construction of Gate Valves<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nCommon gate valves are actuated by a threaded stem that connects the actuator (e.g. handwheel or motor) to the gate. They are characterized as having either a rising or a non-rising stem, depending on which end of the stem is threaded. Rising stems are fixed to the gate and rise and lower together as the valve is operated, providing a visual indication of valve position. The actuator is attached to a nut that is rotated around the threaded stem to move it. Non rising stem valves are fixed to, and rotate with, the actuator, and are threaded into the gate. They may have a pointer threaded onto the stem to indicate valve position since the gate's motion is concealed inside the valve. Non rising stems are used where vertical space is limited.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nGate valves can be actuated manually (handwheel) or electrically using a high torque motor.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe sliding gate (disc) can be wedge-shaped (tapered) or parallel-shaped. Wedge shape designs include solid, flexible, and split wedge designs.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nSeat rings are used to make the replacement of a worn\/leaking seat easier. Seat rings have a screw thread on the reverse side which can be screwed into the main valve body, the flat surface on the opposite side is the seating surface area that presses against the disc. If seat rings are not used, it is possible to machine a flat seat on the main valve body itself, unfortunately, this makes replacing the seat impossible and the seat can only be machined a few times before the entire valve must be replaced.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nGate valve bonnets are often constructed of cast iron. Cast iron is brittle and this makes the bonnet prone to cracking. Special care should be taken when handling and maintaining valves with cast iron bonnets.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nAs the stem penetrates through the valve bonnet, it is necessary to install a sealing gland to prevent leakage from occurring through the gap between the stem and bonnet; sealing is usually achieved using the fibrous packing material.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nFlanges are installed on the suction and discharge side of the valve so that piping can be easily connected.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Gate Valve Types<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe gate comes in various designs and technologies to produce effective sealing for differing applications.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nKnife gate valve\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nA knife gate valve is used for thick fluids and dry bulk solids. The gate is only one piece of metal, which is typically pointed like a knife. These valves are self-cleaning as they pass the seat rings every time they open and close.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Wedge Gate Valve<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nA wedge gate valve has a gate in the shape of a wedge that sits on two inclined seats. In addition to the primary force created by fluid pressure, a high wedging force on the seats created by the stem tightening assists with the sealing. The wedge-shaped gate does not stick to the seat in case of high fluid differential pressure and has an increased service life due to less \"rubbing\" on the seats. However, wedge-shaped gate valves have an additional compression load on the seats that may result in thermal binding and restricted valve opening due to expansion.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Parallel Slide Gate Valve<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nA parallel slide gate valve has a flat gate and seats parallel to it. Parallel slide gate valves use line pressure and positioning to make a tight seal. Flat gates consist of two pieces and have a spring in the middle. The spring pushes the pieces towards the seats for enhanced sealing. Due to their inherent design, parallel gate valves have a safety advantage in higher-temperature applications. Furthermore, since there is no wedging action in parallel gates, closing torques are comparatively smaller, resulting in smaller, less expensive actuators or less manual effort. Due to their sliding into position, parallel gates keep dirt away from the seating surfaces.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Slab Gate Valve<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nSlab gates, also called through-conduit gate valves, are one-unit gates that include a bore-size hole. The bore is in line with the two-seat rings in the open state. This alignment creates a smooth flow with minimal turbulence. This unique design allows for minimal pressure loss in the system and is perfect for the transportation of crude oil and natural gas liquids (NGLs). The valve seats remain clean. However, the disc cavity can capture foreign material. Therefore, the cavity typically has a built-in plug for maintenance purposes of draining the accumulated foreign material.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":3} -->\r\n<h3>Parallel Expanding Gate Valve<\/h3>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nExpanding gate valves have two slab gates matched together that provide sealing through the mechanical expansion of the gate, as seen in Figure 5. When lifted, both of the slab gate's cavities allow the media to flow. The upward force on one slab and the stoppage of the second slab, by a step in the valve body, allows for outward mechanical expansion for a proper seal. When closed, the slab gates block the media flow, and the downward force (stem) on one slab and upward force (step in valve body) allows for outward mechanical expansion for a proper seal.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThese valves provide an effective seal simultaneously for both upstream and downstream seats. This seal makes them ideal for applications like isolation valves in power plants, block valves in process systems, and high-temperature valves in refineries.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Metal seated vs Resilient Seated Gate Valves<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nBefore the resilient seated gate valve was introduced to the market, gate valves with a metal seated wedge were widely used. The conical wedge design and angular sealing devices of a metal seated wedge require a depression in the valve bottom to ensure a tight closure. Herewith, sand and pebbles are embedded in the bore. The pipe system will never be completely free from impurities regardless of how thoroughly the pipe is flushed upon installation or repair. Thus, any metal wedge will eventually lose its ability to be drop-tight.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nA resilient seated gate valve has a plain valve bottom allowing free passage for sand and pebbles in the valve. If impurities pass as the valve closes, the rubber surface will close around the impurities while the valve is closed. A high-quality rubber compound absorbs the impurities as the valve closes, and the impurities will be flushed away when the valve is opened again. The rubber surface will regain its original shape by securing a drop-tight sealing.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe vast majority of gate valves are resilient seated, however, metal seated gate valves are still requested in some markets, so they are still part of our range for water supply and wastewater treatment.\r\n\r\n<!-- \/wp:paragraph -->","parent":0,"count":8,"filter":"raw"}],"taxonomy_info":{"category":[{"value":1,"label":"Uncategorized"}],"post_tag":[{"value":2204,"label":"Ball Valves"},{"value":1957,"label":"butterfly valve"},{"value":2343,"label":"check valve"},{"value":3,"label":"gate valve"},{"value":1885,"label":"Gate Valve Wiki"},{"value":1884,"label":"Gate Valve Wikipedia"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Classification of Fire Gate Valves and Selection Tips - ZECO Valve<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zecovalve.com\/tr\/classification-of-fire-gate-valves-and-selection-tips.html\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Classification of Fire Gate Valves and Selection Tips - ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"1. 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