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16px 18px 0\n }\n\n [lang=ko] .main-nav nav .navbar-nav .nav-item.has_box .sub_box .sub_item a {\n font-size: 14px\n }\n\n [lang=uk] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=vi] .main-nav nav .navbar-nav .nav-item .dropdown-menu {\n max-width: 310px\n }\n\n [lang=uk] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=vi] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box {\n max-width: 100%\n }\n\n [lang=hu] .main-nav nav .navbar-nav>.nav-item,\n [lang=iw] .main-nav nav .navbar-nav>.nav-item {\n margin-left: 20px;\n margin-right: 20px\n }\n\n [lang=el] .main-nav nav .navbar-nav>.nav-item {\n margin-left: 10px;\n margin-right: 10px\n }\n\n [lang=fi] .main-nav nav .navbar-nav>.nav-item {\n margin-left: 16px;\n margin-right: 16px\n }\n\n [lang=fi] .main-nav nav .navbar-nav .nav-item.has_box .sub_box .sub_item a {\n font-size: 15px\n }\n\n [lang=pl] .features .welcome_desc p {\n font-size: 24px\n }\n\n @media only screen and (max-width:1199px) {\n .topbar {\n border-bottom: none\n }\n }\n\n @media only screen and (max-width:767px) {\n .language-select .dropdown-menu {\n left: 0;\n right: auto;\n height: 70vh\n }\n\n .newsletter-content .default-section-heading h3 {\n font-size: 28px;\n line-height: 32px;\n padding-bottom: 18px\n }\n }\n <\/style>\n<script async src=\"https:\/\/www.googletagmanager.com\/gtag\/js?id=G-5WHCGWBZF2\"><\/script><script defer>\n function gtag() {\n dataLayer.push(arguments)\n }\n window.dataLayer = window.dataLayer || [], gtag(\"js\", new Date), gtag(\"config\", \"G-5WHCGWBZF2\"), gtag(\"config\", \"AW-10818223058\")\n <\/script><script defer>\n function gtag_report_conversion_1(n) {\n return gtag(\"event\", \"conversion\", {\n send_to: \"AW-10818223058\/VD_JCK_UqIcDENL3w6Yo\",\n event_callback: function() {\n void 0 !== n && (window.location = n)\n }\n }), !1\n }\n <\/script>\n<\/head>\n<body>\n <div class=\"topbar inside_pages_site\">\n <div class=\"w1200\">\n <div class=\"topbar-content\">\n 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name=\"keyword\" placeholder=\"Buscar...\" required><button type=\"submit\"><i class=\"fa fa-search\"><\/i><\/button> <\/form>\n <\/div>\n <\/li>\n <\/ul>\n<div class=\"switch-mobile-nav-btn d-lg-block\">\n <div class=\"m-switch\"> <i class=\"fa fa-bars\"><\/i> <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <div class=\"main-nav\">\n <div class=\"w1200\">\n <nav class=\"navbar navbar-expand-md navbar-light\"><a class=\"navbar-brand\" href=\"https:\/\/ca.covna-china.com\/\"> <img src=\"\/\/v4-upload.goalsites.com\/728\/image_1637048804_logo.png\" alt=\"logo\" width=\"140\" height=\"24\" class=\"logo1 logo\"><img src=\"\/\/v4-upload.goalsites.com\/728\/image_1629961935_logo.jpg\" alt=\"logo\" width=\"140\" height=\"24\" class=\"logo2 logo\"><\/a>\n <div class=\"collapse navbar-collapse mean-menu\" id=\"navbarSupportedContent\">\n <ul class=\"navbar-nav\">\n<li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/\" class=\"nav-link dropdown-toggle\">Llar<\/a> <\/li>\n <li class=\"nav-item has_box\"> <a href=\"https:\/\/ca.covna-china.com\/products\/all.html\" class=\"nav-link dropdown-toggle\">Productes<i class=\"fa fa-caret-down\"><\/i><\/a>\n <div class=\"dropdown-menu sub_box\">\n <div class=\"list-title text-left\"> <a href=\"https:\/\/ca.covna-china.com\/products\/all.html\"> <span>Productes<\/span> <\/a> <\/div>\n <div class=\"row\">\n <div class=\"col-lg-4 col-md-4 col-sm-6 col-xs-12 col-12 sub_item\"> <a href=\"https:\/\/ca.covna-china.com\/products\/electric-actuated-valve.html\">\n <div class=\"sub_item_img\"> <img src=\"\/\/v4-upload.goalsites.com\/728\/image_1639556005_image_1638174527_Pneumatic-Valve.jpg?imageView2\/1\/w\/80\/h\/80\/format\/webp\" alt=\"V\u00e0lvula accionada el\u00e8ctrica\">\n<\/div> <span>V\u00e0lvula accionada el\u00e8ctrica<\/span>\n <\/a> <\/div>\n <div class=\"col-lg-4 col-md-4 col-sm-6 col-xs-12 col-12 sub_item\"> <a href=\"https:\/\/ca.covna-china.com\/products\/pneumatic-actuated-valve.html\">\n <div class=\"sub_item_img\"> <img src=\"\/\/v4-upload.goalsites.com\/728\/image_1638174547_Electric-valve.jpg?imageView2\/1\/w\/80\/h\/80\/format\/webp\" alt=\"V\u00e0lvula accionada pneum\u00e0tica\">\n<\/div> <span>V\u00e0lvula accionada pneum\u00e0tica<\/span>\n <\/a> <\/div>\n <div class=\"col-lg-4 col-md-4 col-sm-6 col-xs-12 col-12 sub_item\"> <a href=\"https:\/\/ca.covna-china.com\/products\/solenoid-valve.html\">\n <div class=\"sub_item_img\"> <img src=\"\/\/v4-upload.goalsites.com\/728\/image_1637133618_Solenoid-valve.jpg?imageView2\/1\/w\/80\/h\/80\/format\/webp\" alt=\"V\u00e0lvula solenoide\">\n<\/div> <span>V\u00e0lvula solenoide<\/span>\n <\/a> <\/div>\n <div class=\"col-lg-4 col-md-4 col-sm-6 col-xs-12 col-12 sub_item\"> <a href=\"https:\/\/ca.covna-china.com\/products\/manual-valve.html\">\n <div class=\"sub_item_img\"> <img src=\"\/\/v4-upload.goalsites.com\/728\/image_1637133592_Manual-valve.jpg?imageView2\/1\/w\/80\/h\/80\/format\/webp\" alt=\"V\u00e0lvula Manual\">\n<\/div> <span>V\u00e0lvula Manual<\/span>\n <\/a> <\/div>\n <div class=\"col-lg-4 col-md-4 col-sm-6 col-xs-12 col-12 sub_item\"> <a href=\"https:\/\/ca.covna-china.com\/products\/control-valve.html\">\n <div class=\"sub_item_img\"> <img src=\"\/\/v4-upload.goalsites.com\/728\/image_1644645247_%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20220212134243.png?imageView2\/1\/w\/80\/h\/80\/format\/webp\" alt=\"V\u00e0lvula de control\">\n<\/div> <span>V\u00e0lvula de control<\/span>\n <\/a> <\/div>\n <div class=\"col-lg-4 col-md-4 col-sm-6 col-xs-12 col-12 sub_item\"> <a href=\"https:\/\/ca.covna-china.com\/products\/actuator.html\">\n <div class=\"sub_item_img\"> <img src=\"\/\/v4-upload.goalsites.com\/728\/image_1644647212_%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20220212142632.jpg?imageView2\/1\/w\/80\/h\/80\/format\/webp\" alt=\"Actuador\">\n<\/div> <span>Actuador<\/span>\n <\/a> <\/div>\n <\/div>\n <\/div>\n <\/li>\n <li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/page\/about-us.html\" class=\"nav-link dropdown-toggle\">Sobre Nosaltres<i class=\"fa fa-caret-down\"><\/i><\/a>\n <ul class=\"dropdown-menu\">\n<li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/page\/history.html\" class=\"nav-link dropdown-toggle\">Hist\u00f2ria<\/a> <\/li>\n <li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/page\/faq.html\" class=\"nav-link dropdown-toggle\">Preguntes freq\u00fcents<\/a> <\/li>\n <\/ul>\n<\/li>\n <li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/projects\/all.html\" class=\"nav-link dropdown-toggle\">Projectes<i class=\"fa fa-caret-down\"><\/i><\/a>\n <ul class=\"dropdown-menu\">\n<li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/projects\/pharmaceutical-industry.html\" class=\"nav-link dropdown-toggle\">Ind\u00fastria Farmac\u00e8utica<\/a> <\/li>\n <li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/projects\/food-packaging-industry.html\" class=\"nav-link dropdown-toggle\">Ind\u00fastria de l'embalatge alimentari<\/a> <\/li>\n <li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/projects\/water-treatment.html\" class=\"nav-link dropdown-toggle\">Tractament d'Aig\u00fces<\/a> <\/li>\n <li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/projects\/industrial-field.html\" class=\"nav-link dropdown-toggle\">\u00c0mbit Industrial<\/a> <\/li>\n <li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/projects\/chemical-industry-field.html\" class=\"nav-link dropdown-toggle\">\u00c0mbit de la Ind\u00fastria Qu\u00edmica<\/a> <\/li>\n <li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/projects\/petroleum-and-natural-gas.html\" class=\"nav-link dropdown-toggle\">Petroli i Gas Natural<\/a> <\/li>\n <li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/projects\/construction-project.html\" class=\"nav-link dropdown-toggle\">Projecte Constructiu<\/a> <\/li>\n <\/ul>\n<\/li>\n <li 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La temperatura del fluid ha de ser inferior a la temperatura de calibratge de la v\u00e0lvula solenoide seleccionada. La difer\u00e8ncia m\u00e0xima de pressi\u00f3 de treball ha de ser inferior a la pressi\u00f3 m\u00e0xima de calibratge de la v\u00e0lvula solenoide; generalment, la v\u00e0lvula solenoide funciona en una direcci\u00f3, de manera que pagueu atte<\/p> <a class=\"read-more-btn\" href=\"https:\/\/ca.covna-china.com\/article\/matters-needing-attention-in-the-selection-of-solenoid-valves.html\">Llegir m\u00e9s >><\/a>\n <\/div>\n <\/div>\n <div class=\"blog-card col-lg-4 col-md-6 col-12 wow fadeInUp\"> <a href=\"https:\/\/ca.covna-china.com\/article\/classification-of-solenoid-valves.html\" title=\"Classificaci\u00f3 de les v\u00e0lvules solenoides\"> <img class=\"lazy\" alt=\"Classificaci\u00f3 de les v\u00e0lvules solenoides\" src=\"\/\/v4-assets.goalsites.com\/yexuming\/icon\/loading1.gif\" data-original=\"\/\/v4-upload.goalsites.com\/728\/image_1637154256_1COVNA-HK0018-Series-Tri-Clamp-Food-Grade-Sanitary-Solenoid-Valve.jpg?imageView2\/1\/w\/376\/h\/251\/format\/webp\" width=\"376\" height=\"251\"><\/a>\n <div class=\"blog-text\">\n <div class=\"blog-date\">\n <ul>\n<li> <i class=\"far fa-calendar-alt\"><\/i> <span>29 de juny de 2022<\/span>\n<\/li>\n <\/ul>\n<\/div>\n <h4> <a href=\"https:\/\/ca.covna-china.com\/article\/classification-of-solenoid-valves.html\" title=\"Classificaci\u00f3 de les v\u00e0lvules solenoides\">Classificaci\u00f3 de les v\u00e0lvules solenoides<\/a> <\/h4>\n <p>1. Les v\u00e0lvules solenoides es divideixen en tres categories en principi: 1) V\u00e0lvula solenoide d'acci\u00f3 directa: Principi: Quan s'energitza, la bobina electromagn\u00e8tica genera for\u00e7a electromagn\u00e8tica per aixecar el membre de tancament del seient de la v\u00e0lvula i la v\u00e0lvula s'obre; quan l'alimentaci\u00f3 est\u00e0 apagada, la for\u00e7a electromagn\u00e8tica desapareix, la molla pressiona el membre de tancament al seient de la v\u00e0lvula i la v\u00e0lvula es tanca. Caracter\u00edstiques: No pot funcionar<\/p> <a class=\"read-more-btn\" href=\"https:\/\/ca.covna-china.com\/article\/classification-of-solenoid-valves.html\">Llegir m\u00e9s >><\/a>\n <\/div>\n <\/div>\n <div class=\"blog-card col-lg-4 col-md-6 col-12 wow fadeInUp\"> <a href=\"https:\/\/ca.covna-china.com\/article\/solenoid-valve-faults-and-troubleshooting-methods.html\" title=\"Fallades de la v\u00e0lvula solenoide i m\u00e8todes de resoluci\u00f3 de problemes\"> <img class=\"lazy\" alt=\"Fallades de la v\u00e0lvula solenoide i m\u00e8todes de resoluci\u00f3 de problemes\" src=\"\/\/v4-assets.goalsites.com\/yexuming\/icon\/loading1.gif\" data-original=\"\/\/v4-upload.goalsites.com\/728\/image_1637137170_covnaactuator.com.png?imageView2\/1\/w\/376\/h\/251\/format\/webp\" width=\"376\" height=\"251\"><\/a>\n <div class=\"blog-text\">\n <div class=\"blog-date\">\n <ul>\n<li> <i class=\"far fa-calendar-alt\"><\/i> <span>29 de juny de 2022<\/span>\n<\/li>\n <\/ul>\n<\/div>\n <h4> <a href=\"https:\/\/ca.covna-china.com\/article\/solenoid-valve-faults-and-troubleshooting-methods.html\" title=\"Fallades de la v\u00e0lvula solenoide i m\u00e8todes de resoluci\u00f3 de problemes\">Fallades de la v\u00e0lvula solenoide i m\u00e8todes de resoluci\u00f3 de problemes<\/a> <\/h4>\n <p>1. La v\u00e0lvula solenoide no funciona despr\u00e9s d'haver estat energitzada Comproveu si el cablejat d'alimentaci\u00f3 \u00e9s dolent, re-cablejat i connexi\u00f3 del connector Comproveu si la tensi\u00f3 d'alimentaci\u00f3 es troba en el rang de treball -, ajusteu l'interval de posici\u00f3 normal Si la bobina est\u00e0 desolada i es torna a soldar La bobina s'escur\u00e7a, substitu\u00efu la bobina Si la difer\u00e8ncia de pressi\u00f3 de treball \u00e9s inadequada, ajusteu la difer\u00e8ncia de pressi\u00f3<\/p> <a class=\"read-more-btn\" href=\"https:\/\/ca.covna-china.com\/article\/solenoid-valve-faults-and-troubleshooting-methods.html\">Llegir m\u00e9s >><\/a>\n <\/div>\n <\/div>\n <div class=\"blog-card col-lg-4 col-md-6 col-12 wow fadeInUp\"> <a href=\"https:\/\/ca.covna-china.com\/article\/how-to-quickly-judge-the-quality-of-solenoid-valve-on-site.html\" title=\"Com jutjar r\u00e0pidament la qualitat de la v\u00e0lvula solenoide al lloc\"> <img class=\"lazy\" alt=\"Com jutjar r\u00e0pidament la qualitat de la v\u00e0lvula solenoide al lloc\" src=\"\/\/v4-assets.goalsites.com\/yexuming\/icon\/loading1.gif\" data-original=\"\/\/v4-upload.goalsites.com\/728\/image_1637890870_Solenoid-Valve.jpg?imageView2\/1\/w\/376\/h\/251\/format\/webp\" width=\"376\" height=\"251\"><\/a>\n <div class=\"blog-text\">\n <div class=\"blog-date\">\n <ul>\n<li> <i class=\"far fa-calendar-alt\"><\/i> <span>29 de juny de 2022<\/span>\n<\/li>\n <\/ul>\n<\/div>\n <h4> <a href=\"https:\/\/ca.covna-china.com\/article\/how-to-quickly-judge-the-quality-of-solenoid-valve-on-site.html\" title=\"Com jutjar r\u00e0pidament la qualitat de la v\u00e0lvula solenoide al lloc\">Com jutjar r\u00e0pidament la qualitat de la v\u00e0lvula solenoide al lloc<\/a> <\/h4>\n <p>En primer lloc, comproveu si la bobina solenoide de la v\u00e0lvula solenoide \u00e9s defectuosa. Doneu a la v\u00e0lvula de dues posicions un senyal obert o proper al DCS i, a continuaci\u00f3, comproveu si la v\u00e0lvula solenoide guanya o perd pot\u00e8ncia. En general, podeu escoltar el so de l'escena. Si no el podeu escoltar, hi ha d'haver un problema amb la bobina. Pel que fa a la v\u00e0lvula solenoide en si, hi ha algun problema? Si hi ha un problema amb la bobina solenoide, primer chec<\/p> <a class=\"read-more-btn\" href=\"https:\/\/ca.covna-china.com\/article\/how-to-quickly-judge-the-quality-of-solenoid-valve-on-site.html\">Llegir m\u00e9s >><\/a>\n <\/div>\n <\/div>\n <div class=\"blog-card col-lg-4 col-md-6 col-12 wow fadeInUp\"> <a href=\"https:\/\/ca.covna-china.com\/article\/how-electric-ball-valve-are-used-in-cold-water.html\" title=\"Com s'utilitza la v\u00e0lvula de bola el\u00e8ctrica en aigua freda\"> <img class=\"lazy\" alt=\"Com s'utilitza la v\u00e0lvula de bola el\u00e8ctrica en aigua freda\" src=\"\/\/v4-assets.goalsites.com\/yexuming\/icon\/loading1.gif\" data-original=\"\/\/v4-upload.goalsites.com\/728\/image_1637137201_electric-3-piece-flange-ball-valve-300x300.png?imageView2\/1\/w\/376\/h\/251\/format\/webp\" width=\"376\" height=\"251\"><\/a>\n <div class=\"blog-text\">\n <div class=\"blog-date\">\n <ul>\n<li> <i class=\"far fa-calendar-alt\"><\/i> <span>Pot 30, 2022<\/span>\n<\/li>\n <\/ul>\n<\/div>\n <h4> <a href=\"https:\/\/ca.covna-china.com\/article\/how-electric-ball-valve-are-used-in-cold-water.html\" title=\"Com s'utilitza la v\u00e0lvula de bola el\u00e8ctrica en aigua freda\">Com s'utilitza la v\u00e0lvula de bola el\u00e8ctrica en aigua freda<\/a> <\/h4>\n <p>Les v\u00e0lvules de bola el\u00e8ctrica s'utilitzen per proporcionar una manera eficient i fiable de proporcionar aigua freda a llars o empreses. V\u00e0lvules el\u00e8ctriques de bola per a aigua freda Els propietaris tenen moltes opcions a l'hora d'instal\u00b7lar escalfadors autom\u00e0tics d'aigua. El model tradicional pot requerir que els individus surtin i instal\u00b7lin el sistema de manera professional. No obstant aix\u00f2, l'\u00fas d'un escalfador d'aigua el\u00e8ctric pot reduir molt els costos perqu\u00e8 tot el proc\u00e9s ca<\/p> <a class=\"read-more-btn\" href=\"https:\/\/ca.covna-china.com\/article\/how-electric-ball-valve-are-used-in-cold-water.html\">Llegir m\u00e9s >><\/a>\n <\/div>\n <\/div>\n <div class=\"blog-card col-lg-4 col-md-6 col-12 wow fadeInUp\"> <a href=\"https:\/\/ca.covna-china.com\/article\/electric-control-valve-why-you-should-consider-electric-control-of-air-cooling.html\" title=\"V\u00e0lvula de control el\u00e8ctric: per qu\u00e8 haur\u00edeu de considerar el control el\u00e8ctric de la refrigeraci\u00f3 per aire\"> <img class=\"lazy\" alt=\"V\u00e0lvula de control el\u00e8ctric: per qu\u00e8 haur\u00edeu de considerar el control el\u00e8ctric de la refrigeraci\u00f3 per aire\" src=\"\/\/v4-assets.goalsites.com\/yexuming\/icon\/loading1.gif\" data-original=\"\/\/v4-upload.goalsites.com\/728\/image_1636956448_163013411092575.jpg?imageView2\/1\/w\/376\/h\/251\/format\/webp\" width=\"376\" height=\"251\"><\/a>\n <div class=\"blog-text\">\n <div class=\"blog-date\">\n <ul>\n<li> <i class=\"far fa-calendar-alt\"><\/i> <span>Pot 30, 2022<\/span>\n<\/li>\n <\/ul>\n<\/div>\n <h4> <a href=\"https:\/\/ca.covna-china.com\/article\/electric-control-valve-why-you-should-consider-electric-control-of-air-cooling.html\" title=\"V\u00e0lvula de control el\u00e8ctric: per qu\u00e8 haur\u00edeu de considerar el control el\u00e8ctric de la refrigeraci\u00f3 per aire\">V\u00e0lvula de control el\u00e8ctric: per qu\u00e8 haur\u00edeu de considerar el control el\u00e8ctric de la refrigeraci\u00f3 per aire<\/a> <\/h4>\n <p>El sistema de control de v\u00e0lvules m\u00e9s com\u00fa i utilitzat \u00e9s el control de v\u00e0lvules el\u00e8ctriques de 9 volts de 2 vies. V\u00e0lvula el\u00e8ctrica de 9-24V de 2 vies Es tracta d'un dispositiu de control molt \u00fatil que ajuda a simplificar el disseny de les v\u00e0lvules permetent un millor control, una major flexibilitat i menys errors mec\u00e0nics. Els controls motoritzats s\u00f3n molt \u00fatils perqu\u00e8 es poden controlar \u00e0mpliament. V\u00e0lvula el\u00e8ctrica de 9-24v de 2 vies 9-24v valv el\u00e8ctrica de 2 vies<\/p> <a class=\"read-more-btn\" href=\"https:\/\/ca.covna-china.com\/article\/electric-control-valve-why-you-should-consider-electric-control-of-air-cooling.html\">Llegir m\u00e9s >><\/a>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <div class=\"col-lg-12 col-md-12 col-12 pagination-box wow fadeInUp\">\n <nav aria-label=\"Page navigation example\"><ul class=\"pagination\">\n<li class=\"active\"><a href=\"javascript:void(0);\">1<\/a><\/li>\n <li><a href=\"https:\/\/ca.covna-china.com\/articles\/industry-news\/2.html\">2<\/a><\/li>\n <li><a href=\"https:\/\/ca.covna-china.com\/articles\/industry-news\/3.html\">3<\/a><\/li>\n <li><a href=\"https:\/\/ca.covna-china.com\/articles\/industry-news\/4.html\">4<\/a><\/li>\n <li><a href=\"https:\/\/ca.covna-china.com\/articles\/industry-news\/5.html\">5<\/a><\/li>\n <li><a href=\"https:\/\/ca.covna-china.com\/articles\/industry-news\/2.html\">\u203a<\/a><\/li>\n 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type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_longitude\" name=\"geoip[longitude]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_timeZone\" name=\"geoip[timeZone]\" type=\"hidden\" value><input name=\"useragent[browser]\" type=\"hidden\" value=\"Chrome[86.0.4240.75]\"><input name=\"useragent[platform]\" type=\"hidden\" value=\"Windows 10\"><input name=\"useragent[lang]\" type=\"hidden\" value=\"zh-CN,zh;q=0.9,ja;q=0.8,en-US;q=0.7,en;q=0.6,zh-TW;q=0.5\"><input name=\"useragent[mobile]\" type=\"hidden\" value=\"No\"><input name=\"useragent[agent_string]\" type=\"hidden\" value=\"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/86.0.4240.75 Safari\/537.36\">\n<\/form>\n <\/div>\n <\/div>\n <\/div>\n <div class=\"copyright\">\n <div class=\"container\">\n <p class=\"wow fadeInUp\"> <a href=\"https:\/\/ca.covna-china.com\/page\/contact-us.html\" target=\"_blank\">Pol\u00edtica de 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table tr:nth-child(even) {\n background-color: #f9f9f9\n }\n\n input::-webkit-inner-spin-button {\n -webkit-appearance: none\n }\n\n input[type=number] {\n -moz-appearance: textfield\n }\n\n img {\n width: auto;\n height: auto\n }\n\n .img-res img {\n width: auto;\n height: auto !important;\n max-width: 100% !important\n }\n\n .sub_item_img {\n width: 80px;\n height: 80px;\n overflow: hidden;\n display: inline-block;\n vertical-align: middle\n }\n\n .breadcrumb_nav_img {\n height: 300px\n }\n\n .breadcrumb_nav_box .fa.fa-home {\n color: #666\n }\n\n .breadcrumb_nav_box a {\n color: var(--main-theme-color);\n text-decoration: none;\n font-weight: 600\n }\n\n .breadcrumb_nav_box .breadcrumb_nav_position {\n text-transform: none\n }\n\n .breadcrumb_nav_box span {\n text-transform: capitalize\n }\n\n .breadcrumb_nav_wrap {\n padding: 13px 0;\n background-color: #ececec\n }\n\n .breadcrumb_nav_list {\n margin: 0;\n padding: 0;\n display: flex;\n flex-wrap: wrap\n }\n\n .breadcrumb_nav_list li {\n margin: 0;\n padding: 0;\n list-style: none;\n margin-right: 10px\n }\n\n .breadcrumb_nav_list li a {\n text-transform: capitalize\n }\n\n .breadcrumb_nav_list li a:hover {\n color: var(--main-theme-color)\n }\n\n .breadcrumb_nav_list li i {\n margin-right: 4px\n }\n\n .breadcrumb_h1_box {\n background-color: #e5e5e5;\n text-align: center;\n height: 100%;\n width: 100%\n }\n\n .breadcrumb_h1_box h1 {\n font-size: 36px;\n font-family: Arial;\n font-weight: 700;\n color: #fff;\n width: 100%\n }\n\n .language-select .dropdown-menu {\n min-width: 170px;\n height: 600px;\n overflow: auto\n }\n\n .language-select i {\n vertical-align: middle\n }\n\n .has_box .sub_box .sub_item span {\n display: inline-block;\n max-width: 60%;\n vertical-align: middle\n }\n\n [lang=ca] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=de] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=el] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=es] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=et] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=fr] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=it] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=ms] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=pl] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=pt] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=ro] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=sk] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=sv] .main-nav nav .navbar-nav .nav-item .dropdown-menu {\n max-width: 290px\n }\n\n [lang=ca] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=de] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=el] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=es] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=et] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=fr] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=it] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=ms] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=pl] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=pt] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=ro] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=sk] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=sv] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box {\n max-width: 100%\n }\n\n [lang=bg] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=ru] .main-nav nav .navbar-nav .nav-item .dropdown-menu {\n max-width: 330px\n }\n\n [lang=bg] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=ru] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box {\n max-width: 100%\n }\n\n [lang=ru] .sub_item_img {\n width: 78px;\n height: 78px\n }\n\n [lang=ru] .main-nav nav .navbar-nav .nav-item.has_box .sub_box .sub_item a {\n font-size: 13px\n }\n\n [lang=cs] .sub_item_img {\n width: 76px;\n height: 76px\n }\n\n [lang=bg] .main-nav nav .navbar-nav .nav-item.has_box .sub_box .sub_item a,\n [lang=cs] .main-nav nav .navbar-nav .nav-item.has_box .sub_box .sub_item a {\n font-size: 14px\n }\n\n [lang=lv] .main-nav nav .navbar-nav .nav-item .dropdown-menu {\n max-width: 260px\n }\n\n [lang=lv] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box {\n max-width: 100%\n }\n\n [lang=lt] .main-nav nav .navbar-nav>.nav-item,\n [lang=vi] .main-nav nav .navbar-nav>.nav-item {\n margin-left: 12px;\n margin-right: 12px\n }\n\n [dir=rtl] .topbar ul {\n text-align: right\n }\n\n [dir=rtl] .top-contact-area ul li i {\n margin-left: 4px;\n margin-right: 0\n }\n\n [dir=rtl] .language-select i {\n margin-left: 4px;\n margin-right: 0\n }\n\n [dir=rtl] .main-nav nav .navbar-nav {\n margin-left: 0;\n margin-right: auto\n }\n\n [dir=rtl] .searchbox {\n padding: 18px 16px 18px 0\n }\n\n [lang=ko] .main-nav nav .navbar-nav .nav-item.has_box .sub_box .sub_item a {\n font-size: 14px\n }\n\n [lang=uk] .main-nav nav .navbar-nav .nav-item .dropdown-menu,\n [lang=vi] .main-nav nav .navbar-nav .nav-item .dropdown-menu {\n max-width: 310px\n }\n\n [lang=uk] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box,\n [lang=vi] .main-nav nav .navbar-nav .nav-item .dropdown-menu.sub_box {\n max-width: 100%\n }\n\n [lang=hu] .main-nav nav .navbar-nav>.nav-item,\n [lang=iw] .main-nav nav .navbar-nav>.nav-item {\n margin-left: 20px;\n margin-right: 20px\n }\n\n [lang=el] .main-nav nav .navbar-nav>.nav-item {\n margin-left: 10px;\n margin-right: 10px\n }\n\n [lang=fi] .main-nav nav .navbar-nav>.nav-item {\n margin-left: 16px;\n margin-right: 16px\n }\n\n [lang=fi] .main-nav nav .navbar-nav .nav-item.has_box .sub_box .sub_item a {\n font-size: 15px\n }\n\n [lang=pl] .features .welcome_desc p {\n font-size: 24px\n }\n\n @media only screen and (max-width:1199px) {\n .topbar {\n border-bottom: none\n }\n }\n\n @media only screen and (max-width:767px) {\n .language-select .dropdown-menu {\n left: 0;\n right: auto;\n height: 70vh\n }\n\n .newsletter-content .default-section-heading h3 {\n font-size: 28px;\n line-height: 32px;\n padding-bottom: 18px\n }\n }\n <\/style>\n<script async src=\"https:\/\/www.googletagmanager.com\/gtag\/js?id=G-5WHCGWBZF2\"><\/script><script defer>\n function gtag() {\n dataLayer.push(arguments)\n }\n window.dataLayer = window.dataLayer || [], gtag(\"js\", new Date), gtag(\"config\", \"G-5WHCGWBZF2\"), gtag(\"config\", \"AW-10818223058\")\n <\/script><script defer>\n function gtag_report_conversion_1(n) {\n return gtag(\"event\", \"conversion\", {\n send_to: \"AW-10818223058\/VD_JCK_UqIcDENL3w6Yo\",\n event_callback: function() {\n void 0 !== n && (window.location = n)\n }\n }), !1\n }\n <\/script>\n<\/head>\n<body>\n <div class=\"topbar inside_pages_site\">\n <div class=\"w1200\">\n <div class=\"topbar-content\">\n 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(s = \"bahasa Indonesia\", e && (e.removeAttribute(\"class\"), e.setAttribute(\"class\", \"flag-icon flag-icon-id\"))) : \/^(pl\\.)\/.test(t) && (s = \"Polskie\", e && (e.removeAttribute(\"class\"), e.setAttribute(\"class\", \"flag-icon flag-icon-pl\"))), a && (a.innerHTML = s)\n }()\n <\/script><style>\n [lang=da] .blog-nav-pills a,\n [lang=de] .blog-nav-pills a,\n [lang=mt] .blog-nav-pills a,\n [lang=ru] .blog-nav-pills a,\n [lang=vi] .blog-nav-pills a {\n width: auto;\n padding: 0 20px\n }\n <\/style>\n<div class=\"blog blog-bg pt-80 pb-70\">\n <div class=\"w1200\">\n <div class=\"blog-section\">\n <ul class=\"blog-nav-pills wow fadeInUp\">\n<li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/articles\/company-news.html\">Not\u00edcies d'empresa<\/a> <\/li>\n <li class=\"nav-item active\"> <a href=\"https:\/\/ca.covna-china.com\/articles\/industry-news.html\">Not\u00edcies del Sector<\/a> <\/li>\n <li class=\"nav-item\"> <a href=\"https:\/\/ca.covna-china.com\/articles\/valves-study.html\">Estudi de v\u00e0lvules<\/a> <\/li>\n <\/ul>\n<div class=\"row\">\n <div class=\"blog-card col-lg-4 col-md-6 col-12 wow fadeInUp\"> <a href=\"https:\/\/ca.covna-china.com\/article\/matters-needing-attention-in-the-selection-of-solenoid-valves.html\" title=\"Q\u00fcestions que necessiten atenci\u00f3 en la selecci\u00f3 de v\u00e0lvules solenoides\"> <img class=\"lazy\" alt=\"Q\u00fcestions que necessiten atenci\u00f3 en la selecci\u00f3 de v\u00e0lvules solenoides\" src=\"\/\/v4-assets.goalsites.com\/yexuming\/icon\/loading1.gif\" data-original=\"\/\/v4-upload.goalsites.com\/728\/image_1637154296_COVNA-HK0018-Series-Tri-Clamp-Food-Grade-Sanitary-Solenoid-Valve-(4).jpg?imageView2\/1\/w\/376\/h\/251\/format\/webp\" width=\"376\" height=\"251\"><\/a>\n <div class=\"blog-text\">\n <div class=\"blog-date\">\n <ul>\n<li> <i class=\"far fa-calendar-alt\"><\/i> <span>29 de juny de 2022<\/span>\n<\/li>\n <\/ul>\n<\/div>\n <h4> <a href=\"https:\/\/ca.covna-china.com\/article\/matters-needing-attention-in-the-selection-of-solenoid-valves.html\" title=\"Q\u00fcestions que necessiten atenci\u00f3 en la selecci\u00f3 de v\u00e0lvules solenoides\">Q\u00fcestions que necessiten atenci\u00f3 en la selecci\u00f3 de v\u00e0lvules solenoides<\/a> <\/h4>\n <p>1.aplicabilitat El fluid de la canonada ha de ser coherent amb el medi calibrat en la s\u00e8rie de v\u00e0lvules solenoides seleccionades. La temperatura del fluid ha de ser inferior a la temperatura de calibratge de la v\u00e0lvula solenoide seleccionada. La difer\u00e8ncia m\u00e0xima de pressi\u00f3 de treball ha de ser inferior a la pressi\u00f3 m\u00e0xima de calibratge de la v\u00e0lvula solenoide; generalment, la v\u00e0lvula solenoide funciona en una direcci\u00f3, de manera que pagueu atte<\/p> <a class=\"read-more-btn\" href=\"https:\/\/ca.covna-china.com\/article\/matters-needing-attention-in-the-selection-of-solenoid-valves.html\">Llegir m\u00e9s >><\/a>\n <\/div>\n <\/div>\n <div class=\"blog-card col-lg-4 col-md-6 col-12 wow fadeInUp\"> <a href=\"https:\/\/ca.covna-china.com\/article\/classification-of-solenoid-valves.html\" title=\"Classificaci\u00f3 de les v\u00e0lvules solenoides\"> <img class=\"lazy\" alt=\"Classificaci\u00f3 de les v\u00e0lvules solenoides\" src=\"\/\/v4-assets.goalsites.com\/yexuming\/icon\/loading1.gif\" data-original=\"\/\/v4-upload.goalsites.com\/728\/image_1637154256_1COVNA-HK0018-Series-Tri-Clamp-Food-Grade-Sanitary-Solenoid-Valve.jpg?imageView2\/1\/w\/376\/h\/251\/format\/webp\" width=\"376\" height=\"251\"><\/a>\n <div class=\"blog-text\">\n <div class=\"blog-date\">\n <ul>\n<li> <i class=\"far fa-calendar-alt\"><\/i> <span>29 de juny de 2022<\/span>\n<\/li>\n <\/ul>\n<\/div>\n <h4> <a href=\"https:\/\/ca.covna-china.com\/article\/classification-of-solenoid-valves.html\" title=\"Classificaci\u00f3 de les v\u00e0lvules solenoides\">Classificaci\u00f3 de les v\u00e0lvules solenoides<\/a> <\/h4>\n <p>1. Les v\u00e0lvules solenoides es divideixen en tres categories en principi: 1) V\u00e0lvula solenoide d'acci\u00f3 directa: Principi: Quan s'energitza, la bobina electromagn\u00e8tica genera for\u00e7a electromagn\u00e8tica per aixecar el membre de tancament del seient de la v\u00e0lvula i la v\u00e0lvula s'obre; quan l'alimentaci\u00f3 est\u00e0 apagada, la for\u00e7a electromagn\u00e8tica desapareix, la molla pressiona el membre de tancament al seient de la v\u00e0lvula i la v\u00e0lvula es tanca. Caracter\u00edstiques: No pot funcionar<\/p> <a class=\"read-more-btn\" href=\"https:\/\/ca.covna-china.com\/article\/classification-of-solenoid-valves.html\">Llegir m\u00e9s >><\/a>\n <\/div>\n <\/div>\n <div class=\"blog-card col-lg-4 col-md-6 col-12 wow fadeInUp\"> <a href=\"https:\/\/ca.covna-china.com\/article\/solenoid-valve-faults-and-troubleshooting-methods.html\" title=\"Fallades de la v\u00e0lvula solenoide i m\u00e8todes de resoluci\u00f3 de problemes\"> <img class=\"lazy\" alt=\"Fallades de la v\u00e0lvula solenoide i m\u00e8todes de resoluci\u00f3 de problemes\" src=\"\/\/v4-assets.goalsites.com\/yexuming\/icon\/loading1.gif\" data-original=\"\/\/v4-upload.goalsites.com\/728\/image_1637137170_covnaactuator.com.png?imageView2\/1\/w\/376\/h\/251\/format\/webp\" width=\"376\" height=\"251\"><\/a>\n <div class=\"blog-text\">\n <div class=\"blog-date\">\n <ul>\n<li> <i class=\"far fa-calendar-alt\"><\/i> <span>29 de juny de 2022<\/span>\n<\/li>\n <\/ul>\n<\/div>\n <h4> <a href=\"https:\/\/ca.covna-china.com\/article\/solenoid-valve-faults-and-troubleshooting-methods.html\" title=\"Fallades de la v\u00e0lvula solenoide i m\u00e8todes de resoluci\u00f3 de problemes\">Fallades de la v\u00e0lvula solenoide i m\u00e8todes de resoluci\u00f3 de problemes<\/a> <\/h4>\n <p>1. La v\u00e0lvula solenoide no funciona despr\u00e9s d'haver estat energitzada Comproveu si el cablejat d'alimentaci\u00f3 \u00e9s dolent, re-cablejat i connexi\u00f3 del connector Comproveu si la tensi\u00f3 d'alimentaci\u00f3 es troba en el rang de treball -, ajusteu l'interval de posici\u00f3 normal Si la bobina est\u00e0 desolada i es torna a soldar La bobina s'escur\u00e7a, substitu\u00efu la bobina Si la difer\u00e8ncia de pressi\u00f3 de treball \u00e9s inadequada, ajusteu la difer\u00e8ncia de pressi\u00f3<\/p> <a class=\"read-more-btn\" href=\"https:\/\/ca.covna-china.com\/article\/solenoid-valve-faults-and-troubleshooting-methods.html\">Llegir m\u00e9s >><\/a>\n <\/div>\n <\/div>\n <div class=\"blog-card col-lg-4 col-md-6 col-12 wow fadeInUp\"> <a href=\"https:\/\/ca.covna-china.com\/article\/how-to-quickly-judge-the-quality-of-solenoid-valve-on-site.html\" title=\"Com jutjar r\u00e0pidament la qualitat de la v\u00e0lvula solenoide al lloc\"> <img class=\"lazy\" alt=\"Com jutjar r\u00e0pidament la qualitat de la v\u00e0lvula solenoide al lloc\" src=\"\/\/v4-assets.goalsites.com\/yexuming\/icon\/loading1.gif\" data-original=\"\/\/v4-upload.goalsites.com\/728\/image_1637890870_Solenoid-Valve.jpg?imageView2\/1\/w\/376\/h\/251\/format\/webp\" width=\"376\" height=\"251\"><\/a>\n <div class=\"blog-text\">\n <div class=\"blog-date\">\n <ul>\n<li> <i class=\"far fa-calendar-alt\"><\/i> <span>29 de juny de 2022<\/span>\n<\/li>\n <\/ul>\n<\/div>\n <h4> <a href=\"https:\/\/ca.covna-china.com\/article\/how-to-quickly-judge-the-quality-of-solenoid-valve-on-site.html\" title=\"Com jutjar r\u00e0pidament la qualitat de la v\u00e0lvula solenoide al lloc\">Com jutjar r\u00e0pidament la qualitat de la v\u00e0lvula solenoide al lloc<\/a> <\/h4>\n <p>En primer lloc, comproveu si la bobina solenoide de la v\u00e0lvula solenoide \u00e9s defectuosa. Doneu a la v\u00e0lvula de dues posicions un senyal obert o proper al DCS i, a continuaci\u00f3, comproveu si la v\u00e0lvula solenoide guanya o perd pot\u00e8ncia. En general, podeu escoltar el so de l'escena. Si no el podeu escoltar, hi ha d'haver un problema amb la bobina. Pel que fa a la v\u00e0lvula solenoide en si, hi ha algun problema? Si hi ha un problema amb la bobina solenoide, primer chec<\/p> <a class=\"read-more-btn\" href=\"https:\/\/ca.covna-china.com\/article\/how-to-quickly-judge-the-quality-of-solenoid-valve-on-site.html\">Llegir m\u00e9s >><\/a>\n <\/div>\n <\/div>\n <div class=\"blog-card col-lg-4 col-md-6 col-12 wow fadeInUp\"> <a href=\"https:\/\/ca.covna-china.com\/article\/how-electric-ball-valve-are-used-in-cold-water.html\" title=\"Com s'utilitza la v\u00e0lvula de bola el\u00e8ctrica en aigua freda\"> <img class=\"lazy\" alt=\"Com s'utilitza la v\u00e0lvula de bola el\u00e8ctrica en aigua freda\" src=\"\/\/v4-assets.goalsites.com\/yexuming\/icon\/loading1.gif\" data-original=\"\/\/v4-upload.goalsites.com\/728\/image_1637137201_electric-3-piece-flange-ball-valve-300x300.png?imageView2\/1\/w\/376\/h\/251\/format\/webp\" width=\"376\" height=\"251\"><\/a>\n <div class=\"blog-text\">\n <div class=\"blog-date\">\n <ul>\n<li> <i class=\"far fa-calendar-alt\"><\/i> <span>Pot 30, 2022<\/span>\n<\/li>\n <\/ul>\n<\/div>\n <h4> <a href=\"https:\/\/ca.covna-china.com\/article\/how-electric-ball-valve-are-used-in-cold-water.html\" title=\"Com s'utilitza la v\u00e0lvula de bola el\u00e8ctrica en aigua freda\">Com s'utilitza la v\u00e0lvula de bola el\u00e8ctrica en aigua freda<\/a> <\/h4>\n <p>Les v\u00e0lvules de bola el\u00e8ctrica s'utilitzen per proporcionar una manera eficient i fiable de proporcionar aigua freda a llars o empreses. V\u00e0lvules el\u00e8ctriques de bola per a aigua freda Els propietaris tenen moltes opcions a l'hora d'instal\u00b7lar escalfadors autom\u00e0tics d'aigua. El model tradicional pot requerir que els individus surtin i instal\u00b7lin el sistema de manera professional. No obstant aix\u00f2, l'\u00fas d'un escalfador d'aigua el\u00e8ctric pot reduir molt els costos perqu\u00e8 tot el proc\u00e9s ca<\/p> <a class=\"read-more-btn\" href=\"https:\/\/ca.covna-china.com\/article\/how-electric-ball-valve-are-used-in-cold-water.html\">Llegir m\u00e9s >><\/a>\n <\/div>\n <\/div>\n <div class=\"blog-card col-lg-4 col-md-6 col-12 wow fadeInUp\"> <a href=\"https:\/\/ca.covna-china.com\/article\/electric-control-valve-why-you-should-consider-electric-control-of-air-cooling.html\" title=\"V\u00e0lvula de control el\u00e8ctric: per qu\u00e8 haur\u00edeu de considerar el control el\u00e8ctric de la refrigeraci\u00f3 per aire\"> <img class=\"lazy\" alt=\"V\u00e0lvula de control el\u00e8ctric: per qu\u00e8 haur\u00edeu de considerar el control el\u00e8ctric de la refrigeraci\u00f3 per aire\" src=\"\/\/v4-assets.goalsites.com\/yexuming\/icon\/loading1.gif\" data-original=\"\/\/v4-upload.goalsites.com\/728\/image_1636956448_163013411092575.jpg?imageView2\/1\/w\/376\/h\/251\/format\/webp\" width=\"376\" height=\"251\"><\/a>\n <div class=\"blog-text\">\n <div class=\"blog-date\">\n <ul>\n<li> <i class=\"far fa-calendar-alt\"><\/i> <span>Pot 30, 2022<\/span>\n<\/li>\n <\/ul>\n<\/div>\n <h4> <a href=\"https:\/\/ca.covna-china.com\/article\/electric-control-valve-why-you-should-consider-electric-control-of-air-cooling.html\" title=\"V\u00e0lvula de control el\u00e8ctric: per qu\u00e8 haur\u00edeu de considerar el control el\u00e8ctric de la refrigeraci\u00f3 per aire\">V\u00e0lvula de control el\u00e8ctric: per qu\u00e8 haur\u00edeu de considerar el control el\u00e8ctric de la refrigeraci\u00f3 per aire<\/a> <\/h4>\n <p>El sistema de control de v\u00e0lvules m\u00e9s com\u00fa i utilitzat \u00e9s el control de v\u00e0lvules el\u00e8ctriques de 9 volts de 2 vies. V\u00e0lvula el\u00e8ctrica de 9-24V de 2 vies Es tracta d'un dispositiu de control molt \u00fatil que ajuda a simplificar el disseny de les v\u00e0lvules permetent un millor control, una major flexibilitat i menys errors mec\u00e0nics. Els controls motoritzats s\u00f3n molt \u00fatils perqu\u00e8 es poden controlar \u00e0mpliament. V\u00e0lvula el\u00e8ctrica de 9-24v de 2 vies 9-24v valv el\u00e8ctrica de 2 vies<\/p> <a class=\"read-more-btn\" href=\"https:\/\/ca.covna-china.com\/article\/electric-control-valve-why-you-should-consider-electric-control-of-air-cooling.html\">Llegir m\u00e9s >><\/a>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <div class=\"col-lg-12 col-md-12 col-12 pagination-box wow fadeInUp\">\n <nav aria-label=\"Page navigation example\"><ul class=\"pagination\">\n<li class=\"active\"><a href=\"javascript:void(0);\">1<\/a><\/li>\n <li><a href=\"https:\/\/ca.covna-china.com\/articles\/industry-news\/2.html\">2<\/a><\/li>\n <li><a href=\"https:\/\/ca.covna-china.com\/articles\/industry-news\/3.html\">3<\/a><\/li>\n <li><a href=\"https:\/\/ca.covna-china.com\/articles\/industry-news\/4.html\">4<\/a><\/li>\n <li><a href=\"https:\/\/ca.covna-china.com\/articles\/industry-news\/5.html\">5<\/a><\/li>\n <li><a href=\"https:\/\/ca.covna-china.com\/articles\/industry-news\/2.html\">\u203a<\/a><\/li>\n 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.footer-links .input-group .btn:hover {\n background-color: var(--mainColor)\n }\n\n .footer-links .input-group input::-webkit-input-placeholder,\n .footer-links .input-group textarea::-webkit-input-placeholder {\n color: rgba(242, 242%, 242%, 50%)\n }\n\n .footer-links .input-group input:-moz-placeholder,\n .footer-links .input-group textarea:-moz-placeholder {\n color: rgba(242, 242%, 242%, 50%)\n }\n\n .footer-links .input-group input::-moz-placeholder,\n .footer-links .input-group textarea::-moz-placeholder {\n color: rgba(242, 242%, 242%, 50%)\n }\n\n .footer-links .input-group input:-ms-input-placeholder,\n .footer-links .input-group textarea:-ms-input-placeholder {\n color: rgba(242, 242%, 242%, 50%)\n }\n\n .newsletter .newsletter-btn {\n background: #000;\n padding: 16px 30px;\n color: #fff;\n border-radius: 6px;\n text-transform: uppercase;\n transition: .5s\n }\n\n .newsletter .newsletter-btn:hover {\n background: #fff;\n color: var(--mainColor)\n }\n\n [dir=rtl] 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placeholder=\"*Missatge\"><\/textarea>\n<\/div>\n <div class=\"input-group\"> <button class=\"btn\" type=\"submit\">enviar<\/button> <\/div> <input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_ipAddress\" name=\"custom[ipAddress]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_countryName\" name=\"custom[countryName]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_regionName\" name=\"custom[regionName]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_cityName\" name=\"custom[cityName]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_countryCode\" name=\"custom[countryCode]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_zipCode\" name=\"custom[zipCode]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_latitude\" name=\"custom[latitude]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_longitude\" name=\"custom[longitude]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_timeZone\" name=\"custom[timeZone]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_ipAddress\" name=\"geoip[ipAddress]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_countryName\" name=\"geoip[countryName]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_countryCode\" name=\"geoip[countryCode]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_regionName\" name=\"geoip[regionName]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_cityName\" name=\"geoip[cityName]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_zipCode\" name=\"geoip[zipCode]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_latitude\" name=\"geoip[latitude]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_longitude\" name=\"geoip[longitude]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_timeZone\" name=\"geoip[timeZone]\" type=\"hidden\" value><input name=\"useragent[browser]\" type=\"hidden\" value=\"Chrome[86.0.4240.75]\"><input name=\"useragent[platform]\" type=\"hidden\" value=\"Windows 10\"><input name=\"useragent[lang]\" type=\"hidden\" value=\"zh-CN,zh;q=0.9,ja;q=0.8,en-US;q=0.7,en;q=0.6,zh-TW;q=0.5\"><input name=\"useragent[mobile]\" type=\"hidden\" value=\"No\"><input name=\"useragent[agent_string]\" type=\"hidden\" value=\"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/86.0.4240.75 Safari\/537.36\">\n<\/form>\n <\/div>\n <\/div>\n <\/div>\n <div class=\"copyright\">\n <div class=\"container\">\n <p class=\"wow fadeInUp\"> <a href=\"https:\/\/ca.covna-china.com\/page\/contact-us.html\" target=\"_blank\">Pol\u00edtica de 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class=\"form-group\"> <label>Tel\u00e8fon:<\/label> <input type=\"text\" name=\"contact[Phone]\" class=\"form-control\" placeholder=\"Introdu\u00efu el n\u00famero de tel\u00e8fon\" pattern=\"(\\d{11})|^((\\d{7,8})|(\\d{4}|\\d{3})-(\\d{7,8})|(\\d{4}|\\d{3})-(\\d{7,8})-(\\d{4}|\\d{3}|\\d{2}|\\d{1})|(\\d{7,8})-(\\d{4}|\\d{3}|\\d{2}|\\d{1}))$\">\n<\/div>\n <div class=\"form-group\"> <label>*Missatge:<\/label> <textarea class=\"form-control\" rows=\"3\" name=\"message\" placeholder=\"Introdueix el teu missatge\" required=\"required\"><\/textarea>\n<\/div> <button type=\"submit\" class=\"btn btn-primary\">Enviar consulta<\/button> <input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_ipAddress\" name=\"custom[ipAddress]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_countryName\" name=\"custom[countryName]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_regionName\" name=\"custom[regionName]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_cityName\" name=\"custom[cityName]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_countryCode\" name=\"custom[countryCode]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_zipCode\" name=\"custom[zipCode]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_latitude\" name=\"custom[latitude]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_longitude\" name=\"custom[longitude]\" type=\"hidden\" value><input class=\"custom-1a735d2a1be30ad7e5d46a9b98c9582a_timeZone\" name=\"custom[timeZone]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_ipAddress\" name=\"geoip[ipAddress]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_countryName\" name=\"geoip[countryName]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_countryCode\" name=\"geoip[countryCode]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_regionName\" name=\"geoip[regionName]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_cityName\" name=\"geoip[cityName]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_zipCode\" name=\"geoip[zipCode]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_latitude\" name=\"geoip[latitude]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_longitude\" name=\"geoip[longitude]\" type=\"hidden\" value><input class=\"geo-ba8511960d412019f36209224f4e8c7c_timeZone\" name=\"geoip[timeZone]\" type=\"hidden\" value><input name=\"useragent[browser]\" type=\"hidden\" value=\"Chrome[86.0.4240.75]\"><input name=\"useragent[platform]\" type=\"hidden\" value=\"Windows 10\"><input name=\"useragent[lang]\" type=\"hidden\" value=\"zh-CN,zh;q=0.9,ja;q=0.8,en-US;q=0.7,en;q=0.6,zh-TW;q=0.5\"><input name=\"useragent[mobile]\" type=\"hidden\" value=\"No\"><input name=\"useragent[agent_string]\" type=\"hidden\" value=\"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/86.0.4240.75 Safari\/537.36\">\n<\/form>\n <\/div>\n <\/div>\n <\/section><script src=\"https:\/\/cdn.staticfile.org\/twitter-bootstrap\/4.5.0\/js\/bootstrap.min.js\"><\/script><script src=\"https:\/\/cdn.staticfile.org\/wow\/1.1.2\/wow.min.js\"><\/script><script src=\"https:\/\/cdn.staticfile.org\/Swiper\/6.0.4\/swiper-bundle.min.js\"><\/script><script src=\"https:\/\/cdn.staticfile.org\/jquery.lazyload\/1.9.1\/jquery.lazyload.min.js\"><\/script><script src=\"https:\/\/cdn.staticfile.org\/fancybox\/3.5.7\/jquery.fancybox.min.js\"><\/script><script type=\"text\/javascript\" src=\"\/\/v4-assets.goalsites.com\/huangzd\/plugins\/jqueryCountup20161120\/js\/jquery.waypoints.min.js\"><\/script><script type=\"text\/javascript\" 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