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.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 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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 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target=\"_blank\"> <i class=\"flag-icon flag-icon-pl\"><\/i> Polskie <\/a> <\/li>\n <\/ul>\n<\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <div class=\"header-area inside_pages_site\">\n <div class=\"navbar-area\">\n <div class=\"main-responsive-nav\">\n <div class=\"w1200\">\n <div class=\"mobile-nav\"> <a href=\"https:\/\/ca.covna-china.com\/\" class=\"logo\"> <img src=\"\/\/v4-upload.goalsites.com\/728\/image_1629961935_logo.jpg\" alt=\"logo\" width=\"140\" height=\"24\"><\/a>\n <ul class=\"menu-sidebar menu-small-device\">\n<li> <i class=\"fa fa-search\"><\/i>\n <div class=\"m-search-box search_g_box\">\n <form action=\"\/search\/products\" method=\"GET\"> <input type=\"text\" 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 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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 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No obstant aix\u00f2, els efectes del canvi clim\u00e0tic continuen dificultant l'assoliment de rendiments \u00f2ptims dels cultius en alguns llocs, per la qual cosa es requereixen millors pr\u00e0ctiques agr\u00edcoles, incl\u00f2s el regadiu. El reg agr\u00edcola pot optimitzar el flux d'aigua mitjan\u00e7ant l'\u00fas de diverses v\u00e0lvules d'accionament i control per garantir que nom\u00e9s s'utilitzi la quantitat \u00f2ptima d'aigua i no es malgasti. Per descomptat, el nostre COVNA pot proporcionar aquestes v\u00e0lvules pneum\u00e0tiques i el\u00e8ctriques per a petites i grans aplicacions de reg. En aquest article, aprendrem a seleccionar i aplicar actuadors COVNA per regular el flux d'aigua en la pr\u00e0ctica del reg.<br><br>On es poden utilitzar actuadors en el sector del reg agr\u00edcola?<br><br>Les v\u00e0lvules el\u00e8ctriques i les v\u00e0lvules pneum\u00e0tiques tenen una \u00e0mplia gamma d'aplicacions en la ind\u00fastria del reg agr\u00edcola, per\u00f2 cal pensar i considerar per trobar el seu millor \u00fas. El major \u00fas \u00e9s controlar el flux d'aigua a trav\u00e9s de bucles de control automatitzats. Aquests bucles requereixen sensors d'humitat per analitzar el nivell d'humitat del s\u00f2l per obrir \/ tancar la v\u00e0lvula d'aigua en conseq\u00fc\u00e8ncia. En aquest cas es pot utilitzar una v\u00e0lvula d'encesa \/ apagada o control de cabal.<br><br>Quan s'utilitzen v\u00e0lvules de control, v\u00e0lvules com les v\u00e0lvules d'aturada i les v\u00e0lvules angulars solen ser la primera opci\u00f3 en el reg agr\u00edcola. En comparaci\u00f3 amb altres v\u00e0lvules, aquestes v\u00e0lvules tenen un tancament m\u00e9s ajustat. Els actuadors COVNA s\u00f3n adequats per a aplicacions amb aquestes v\u00e0lvules perqu\u00e8 compleixen requisits com el parell, la resist\u00e8ncia general al desgast, etc., ja que aquestes aplicacions poden requerir que l'actuador estigui a l'aire lliure, etc. A m\u00e9s, com que la v\u00e0lvula es pot accionar en mode manual quan l'alimentaci\u00f3 est\u00e0 apagada, \u00e9s flexible i es pot accionar cont\u00ednuament sense obstacles.<\/div>\n <\/div>\n <\/div>\n <\/div>\n <style>\n .rightmenu ul li {\n width: 50px;\n height: 50px;\n font-size: 26px;\n line-height: 50px\n }\n\n .rightmenu .side-link {\n position: absolute;\n top: 0;\n right: -200%;\n opacity: 0;\n visibility: hidden;\n color: #fff;\n background-color: var(--mainColor3);\n font-size: 16px;\n line-height: 22px;\n width: 170px;\n min-height: 50px;\n padding: 10px 20px;\n transition: .5s;\n z-index: -1\n }\n\n .rightmenu .side-link a {\n color: #fff !important\n }\n\n .rightmenu .r-icon:hover .side-link {\n right: 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target=\"_blank\"><i class=\"fab fa-linkedin-in\"><\/i><\/a> <\/li>\n <li> <a href=\"https:\/\/twitter.com\/valve_covna\" target=\"_blank\"><i class=\"fab fa-twitter\"><\/i><\/a> <\/li>\n <li> <a href=\"https:\/\/www.youtube.com\/channel\/UC3EDFKt6qoQCCyuun5Tfwwg\" target=\"_blank\"><i class=\"fab fa-youtube\"><\/i><\/a> <\/li>\n <li> <a href=\"https:\/\/www.instagram.com\/fluidcontrolvalve\/\" target=\"_blank\"><i class=\"fab fa-instagram\"><\/i><\/a> <\/li>\n <\/ul>\n<\/div>\n <\/div>\n <div class=\"footer-links footer-quick-links wow fadeInUp\">\n <h3 class=\"ft_title\">Enlla\u00e7os r\u00e0pids<\/h3>\n <ul>\n<li> <a href=\"https:\/\/ca.covna-china.com\/\"><i class=\"fas fa-long-arrow-alt-right\"><\/i>Llar<\/a> <\/li>\n <li> <a href=\"https:\/\/ca.covna-china.com\/products\/all.html\"><i class=\"fas fa-long-arrow-alt-right\"><\/i>Productes<\/a> <\/li>\n <li> <a href=\"https:\/\/ca.covna-china.com\/page\/about-us.html\"><i class=\"fas fa-long-arrow-alt-right\"><\/i>Sobre Nosaltres<\/a> <\/li>\n <li> <a href=\"https:\/\/ca.covna-china.com\/projects\/all.html\"><i class=\"fas fa-long-arrow-alt-right\"><\/i>Projectes<\/a> <\/li>\n <li> <a href=\"https:\/\/ca.covna-china.com\/articles\/all.html\"><i class=\"fas fa-long-arrow-alt-right\"><\/i>Bloc<\/a> <\/li>\n <li> <a href=\"https:\/\/ca.covna-china.com\/videos\/lives.html\"><i class=\"fas fa-long-arrow-alt-right\"><\/i>Viure<\/a> <\/li>\n <li> <a href=\"https:\/\/ca.covna-china.com\/encyclopedias\/encyclopedia.html\"><i class=\"fas fa-long-arrow-alt-right\"><\/i>Enciclop\u00e8dia<\/a> <\/li>\n <li> <a href=\"https:\/\/ca.covna-china.com\/page\/contact-us.html\"><i class=\"fas fa-long-arrow-alt-right\"><\/i>Contacta amb nosaltres<\/a> <\/li>\n <\/ul>\n<\/div>\n <div class=\"footer-links footer-contact wow fadeInUp\">\n <h3 class=\"ft_title\">Contacta amb nosaltres<\/h3>\n <ul>\n<li> <i class=\"fa fa-envelope\"><\/i>\n <p>Correu electr\u00f2nic:<\/p> <a href=\"mailto:inquiry@covna-china.com\">inquiry@covna-china.com<\/a>\n <\/li>\n <li> <i class=\"fas fa-phone-alt\" style=\"font-size:20px\"><\/i>\n <p>Tel\u00e8fon:<\/p> <a href=\"tel:8613556641138\">+86-1355-6641138<\/a>\n <\/li>\n <li> <i class=\"fas fa-map-marker-alt\" style=\"font-size:20px\"><\/i>\n <p>Ubicaci\u00f3:<\/p>\n <p>Longchang Micro-Chuangyuan, districte de Dongcheng ciutat de Dongguan, Xina, 523000<\/p>\n <\/li>\n <\/ul>\n<\/div>\n <div class=\"footer-links footer-form wow fadeInUp\">\n <h3>Subscriure<\/h3>\n <p>Subscriu-te a la nostra newsletter per rebre les nostres not\u00edcies actualitzades!<\/p>\n <form class=\"form-3b52d116d103db2f52fb4903610e2c97\" action=\"https:\/\/inquiry.digoodcms.com\/api\/covna\" method=\"POST\"> <input name=\"page\" type=\"hidden\" value><input id=\"backpage2\" name=\"backpage\" type=\"hidden\" value><div class=\"input-group\"> <input type=\"text\" name=\"contact[fullname]\" class=\"form-control2\" required placeholder=\"*El teu nom\">\n<\/div>\n <div class=\"input-group\"> <input type=\"email\" name=\"email\" class=\"form-control2\" placeholder=\"*El teu correu electr\u00f2nic\" required pattern=\"[-\\w]+@[-\\w]+(\\.[-\\w]+)+\">\n<\/div>\n <div class=\"input-group\"> <textarea name=\"message\" rows=\"3\" class=\"form-control2\" minlength=\"10\" maxlength=\"2000\" required placeholder=\"*Missatge\"><\/textarea>\n<\/div>\n <div class=\"input-group\"> <button class=\"btn\" type=\"submit\">enviar<\/button> <\/div> <input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_ipAddress\" name=\"custom[ipAddress]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_countryName\" name=\"custom[countryName]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_regionName\" name=\"custom[regionName]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_cityName\" name=\"custom[cityName]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_countryCode\" name=\"custom[countryCode]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_zipCode\" name=\"custom[zipCode]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_latitude\" name=\"custom[latitude]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_longitude\" name=\"custom[longitude]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_timeZone\" name=\"custom[timeZone]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_ipAddress\" name=\"geoip[ipAddress]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_countryName\" name=\"geoip[countryName]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_countryCode\" name=\"geoip[countryCode]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_regionName\" name=\"geoip[regionName]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_cityName\" name=\"geoip[cityName]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_zipCode\" name=\"geoip[zipCode]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_latitude\" name=\"geoip[latitude]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_longitude\" name=\"geoip[longitude]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_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 privacitat<\/a><br>Drets d'autor 2021 Guangdong COVNA Co, Ltd<\/p>\n <\/div>\n <\/div>\n <div class=\"rightmenu\">\n <ul>\n<li class=\"r-icon envelope\"> <a data-fancybox data-src=\"#QuickInquiryModal\" href=\"javascript:;\" class=\"dg-btn dg-theme\">Consulta r\u00e0pida<\/a> <i class=\"fa fa-envelope\"><\/i> <\/li>\n <li class=\"r-icon\"> <a href=\"https:\/\/www.linkedin.com\/in\/covnavalves\/\" target=\"_blank\"><i class=\"fab fa-linkedin-in\"><\/i><\/a> <\/li>\n <li class=\"r-icon\"><a href=\"https:\/\/www.facebook.com\/automaticcontrolvalve\" target=\"_blank\"><i class=\"fab fa-facebook\"><\/i><\/a><\/li>\n <li class=\"r-icon\"><a href=\"https:\/\/www.youtube.com\/channel\/UC3EDFKt6qoQCCyuun5Tfwwg\" target=\"_blank\"><i class=\"fab fa-youtube\"><\/i><\/a><\/li>\n <li class=\"r-icon\">\n <div class=\"icon\"><i class=\"fab fa-whatsapp\"><\/i><\/div>\n <div class=\"side-link\"> <a href=\"https:\/\/api.whatsapp.com\/send?phone=+86%2013556641138&text=Hello\" target=\"_blank\">+86 13556641138<\/a> <\/div>\n <\/li>\n <li class=\"r-top\"><span class=\"standard-arrow-right02 arrow-right02\"><\/span><\/li>\n <\/ul>\n<\/div>\n <section class=\"quick-inquiry-section\" style=\"display:none\"><div class=\"container\">\n <div id=\"QuickInquiryModal\" style=\"width:90%;max-width:800px\">\n <h2>Consulta r\u00e0pida<\/h2>\n <form class=\"form-3b52d116d103db2f52fb4903610e2c97\" action=\"\/\/inquiry.digoodcms.com\/api\/covna\" method=\"post\"> <input name=\"page\" type=\"hidden\" value><input id=\"backpage\" name=\"backpage\" type=\"hidden\" value><div class=\"form-group\"> <label>Nom:<\/label> <input type=\"text\" name=\"contact[Name]\" class=\"form-control\" placeholder=\"Introdu\u00efu el vostre nom\">\n<\/div>\n <div class=\"form-group\"> <label>*Correu electr\u00f2nic:<\/label> <input type=\"email\" name=\"email\" class=\"form-control\" placeholder=\"Introdueix el teu email\" required=\"required\" pattern=\"[-\\w\\.]+@[-\\w]+(\\.[-\\w]+)+\">\n<\/div>\n <div 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-ae03dcb8eaf7b97bb1132859c422e479_ipAddress\" name=\"custom[ipAddress]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_countryName\" name=\"custom[countryName]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_regionName\" name=\"custom[regionName]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_cityName\" name=\"custom[cityName]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_countryCode\" name=\"custom[countryCode]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_zipCode\" name=\"custom[zipCode]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_latitude\" name=\"custom[latitude]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_longitude\" name=\"custom[longitude]\" type=\"hidden\" value><input class=\"custom-ae03dcb8eaf7b97bb1132859c422e479_timeZone\" name=\"custom[timeZone]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_ipAddress\" name=\"geoip[ipAddress]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_countryName\" name=\"geoip[countryName]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_countryCode\" name=\"geoip[countryCode]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_regionName\" name=\"geoip[regionName]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_cityName\" name=\"geoip[cityName]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_zipCode\" name=\"geoip[zipCode]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_latitude\" name=\"geoip[latitude]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_longitude\" name=\"geoip[longitude]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_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\" src=\"\/\/v4-assets.goalsites.com\/huangzd\/plugins\/jqueryCountup20161120\/js\/jquery.countup.min.js\"><\/script><script type=\"text\/javascript\" charset=\"utf-8\">\n $((function() {\n var e, t, o;\n document.querySelectorAll('a[href^=\"mailto:\"]').forEach((function(e, t) {\n e.onclick = function() {\n \"inquiry@covna-china.com\" == event.target.innerText.trim() && (console.log(\"email\"), gtag_report_conversion_1(window.location.href))\n }\n })),\n function() {\n window.location.origin;\n var e = window.location.host;\n if (\"rtl\" == (document.getElementsByTagName(\"html\")[0].getAttribute(\"dir\") || 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href=\"https:\/\/ca.covna-china.com\/dlp\/pneumatic-knife-gate-valve.html\">v\u00e0lvula de porta pneum\u00e0tica de ganivet<\/a> <a href=\"https:\/\/ca.covna-china.com\/dlp\/ball-valve.html\">v\u00e0lvula de bola<\/a> <a href=\"https:\/\/ca.covna-china.com\/dlp\/gate-valve.html\">v\u00e0lvula de porta<\/a> <a href=\"https:\/\/ca.covna-china.com\/dlp\/butterfly-valve.html\">v\u00e0lvula de papallona<\/a> <a href=\"https:\/\/ca.covna-china.com\/dlp\/globe-valve.html\">v\u00e0lvula de globus<\/a>\n <\/div>\n <\/div>\n 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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 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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 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No obstant aix\u00f2, els efectes del canvi clim\u00e0tic continuen dificultant l'assoliment de rendiments \u00f2ptims dels cultius en alguns llocs, per la qual cosa es requereixen millors pr\u00e0ctiques agr\u00edcoles, incl\u00f2s el regadiu. El reg agr\u00edcola pot optimitzar el flux d'aigua mitjan\u00e7ant l'\u00fas de diverses v\u00e0lvules d'accionament i control per garantir que nom\u00e9s s'utilitzi la quantitat \u00f2ptima d'aigua i no es malgasti. Per descomptat, el nostre COVNA pot proporcionar aquestes v\u00e0lvules pneum\u00e0tiques i el\u00e8ctriques per a petites i grans aplicacions de reg. En aquest article, aprendrem a seleccionar i aplicar actuadors COVNA per regular el flux d'aigua en la pr\u00e0ctica del reg.<br><br>On es poden utilitzar actuadors en el sector del reg agr\u00edcola?<br><br>Les v\u00e0lvules el\u00e8ctriques i les v\u00e0lvules pneum\u00e0tiques tenen una \u00e0mplia gamma d'aplicacions en la ind\u00fastria del reg agr\u00edcola, per\u00f2 cal pensar i considerar per trobar el seu millor \u00fas. El major \u00fas \u00e9s controlar el flux d'aigua a trav\u00e9s de bucles de control automatitzats. Aquests bucles requereixen sensors d'humitat per analitzar el nivell d'humitat del s\u00f2l per obrir \/ tancar la v\u00e0lvula d'aigua en conseq\u00fc\u00e8ncia. En aquest cas es pot utilitzar una v\u00e0lvula d'encesa \/ apagada o control de cabal.<br><br>Quan s'utilitzen v\u00e0lvules de control, v\u00e0lvules com les v\u00e0lvules d'aturada i les v\u00e0lvules angulars solen ser la primera opci\u00f3 en el reg agr\u00edcola. En comparaci\u00f3 amb altres v\u00e0lvules, aquestes v\u00e0lvules tenen un tancament m\u00e9s ajustat. Els actuadors COVNA s\u00f3n adequats per a aplicacions amb aquestes v\u00e0lvules perqu\u00e8 compleixen requisits com el parell, la resist\u00e8ncia general al desgast, etc., ja que aquestes aplicacions poden requerir que l'actuador estigui a l'aire lliure, etc. A m\u00e9s, com que la v\u00e0lvula es pot accionar en mode manual quan l'alimentaci\u00f3 est\u00e0 apagada, \u00e9s flexible i es pot accionar cont\u00ednuament sense obstacles.<\/div>\n <\/div>\n <\/div>\n <\/div>\n <style>\n .rightmenu ul li {\n width: 50px;\n height: 50px;\n font-size: 26px;\n line-height: 50px\n }\n\n .rightmenu .side-link {\n position: absolute;\n top: 0;\n right: -200%;\n opacity: 0;\n visibility: hidden;\n color: #fff;\n background-color: var(--mainColor3);\n font-size: 16px;\n line-height: 22px;\n width: 170px;\n min-height: 50px;\n padding: 10px 20px;\n transition: .5s;\n z-index: -1\n }\n\n .rightmenu .side-link a {\n color: #fff !important\n }\n\n .rightmenu .r-icon:hover .side-link {\n right: 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name=\"geoip[regionName]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_cityName\" name=\"geoip[cityName]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_zipCode\" name=\"geoip[zipCode]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_latitude\" name=\"geoip[latitude]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_longitude\" name=\"geoip[longitude]\" type=\"hidden\" value><input class=\"geo-663c40799e8ded1932de100dcf5dbedf_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 privacitat<\/a><br>Drets d'autor 2021 Guangdong COVNA Co, Ltd<\/p>\n <\/div>\n <\/div>\n <div class=\"rightmenu\">\n <ul>\n<li class=\"r-icon envelope\"> <a data-fancybox data-src=\"#QuickInquiryModal\" href=\"javascript:;\" class=\"dg-btn dg-theme\">Consulta r\u00e0pida<\/a> <i class=\"fa fa-envelope\"><\/i> <\/li>\n <li class=\"r-icon\"> <a href=\"https:\/\/www.linkedin.com\/in\/covnavalves\/\" target=\"_blank\"><i class=\"fab fa-linkedin-in\"><\/i><\/a> <\/li>\n <li class=\"r-icon\"><a href=\"https:\/\/www.facebook.com\/automaticcontrolvalve\" target=\"_blank\"><i class=\"fab fa-facebook\"><\/i><\/a><\/li>\n <li class=\"r-icon\"><a 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