{"id":3130,"date":"2022-09-25T16:18:23","date_gmt":"2022-09-25T16:18:23","guid":{"rendered":"https:\/\/p69.com.vn\/?p=3130"},"modified":"2022-09-28T09:40:38","modified_gmt":"2022-09-28T09:40:38","slug":"van-tuyen-tinh-la-gi","status":"publish","type":"post","link":"https:\/\/p69.com.vn\/en\/van-tuyen-tinh-la-gi\/","title":{"rendered":"What is a linear valve? Structure, application, principle of operation"},"content":{"rendered":"<p>In automation control systems, we often hear about linear valves or linear control valves. So what is a linear valve? Structure, application, working principle? Today <a href=\"https:\/\/p69.com.vn\/\" target=\"_blank\" rel=\"noopener\"><strong>P69 company<\/strong><\/a> will share with customers and help customers answer the above question.<\/p>\n<figure id=\"attachment_3136\" aria-describedby=\"caption-attachment-3136\" style=\"width: 377px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3136 size-full\" title=\"Van tuy\u1ebfn t\u00ednh l\u00e0 g\u00ec?\" src=\"https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/09\/van-tuyen-tinh-dieu-khien-khi-nen-1.jpg\" alt=\"Van tuy\u1ebfn t\u00ednh l\u00e0 g\u00ec?\" width=\"377\" height=\"700\" srcset=\"https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/09\/van-tuyen-tinh-dieu-khien-khi-nen-1.jpg 377w, https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/09\/van-tuyen-tinh-dieu-khien-khi-nen-1-162x300.jpg 162w\" sizes=\"auto, (max-width: 377px) 100vw, 377px\" \/><figcaption id=\"caption-attachment-3136\" class=\"wp-caption-text\"><em>What is a linear valve?<\/em><\/figcaption><\/figure>\n<p><strong>Linear control valve<\/strong>\u00a0is a valve that is automatically controlled by the signal\u00a0linear <strong>4-20mA\u00a0<\/strong>or \u00a0<strong>0-10V<\/strong>\u00a0with the task of adjusting and regulating the flow of large and small as desired. Linear control valve is also known as linear valve using linear control head that can be installed for industrial valves such as <strong>ball valve, butterfly valve, globe valve, gate valve<\/strong>, good for many equipment systems, fluid environment of water, gas, vapor, solution, and chemicals suitable for many fields today.<\/p>\n<p><strong>Linear valve\u00a0<\/strong>or\u00a0<strong>regulating valve<\/strong>\u00a0can open and close the valve in many different angles such as 10, 15, 20, 40, 45, 60, 90,&#8230; degrees depending on the system operation that can be easily adjusted angle of flow thanks to the linear valve. <strong>Linear control valve<\/strong>\u00a0we are imported genuine from many big countries with the best quality and cheapest price on the market today.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_45 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" area-label=\"ez-toc-toggle-icon-1\"><label for=\"item-69e7e5c7375e1\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;direction:ltr;\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input  type=\"checkbox\" id=\"item-69e7e5c7375e1\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-visibility-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/p69.com.vn\/en\/van-tuyen-tinh-la-gi\/#Linear_control_valve_specifications\" title=\"Linear control valve specifications\">Linear control valve specifications<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/p69.com.vn\/en\/van-tuyen-tinh-la-gi\/#Structure_of_a_linear_valve\" title=\"Structure of a linear valve\">Structure of a linear valve<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/p69.com.vn\/en\/van-tuyen-tinh-la-gi\/#1_Linear_actuators_and_controllers\" title=\"1. Linear actuators and controllers\">1. Linear actuators and controllers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/p69.com.vn\/en\/van-tuyen-tinh-la-gi\/#2_Valve_body_parts\" title=\"2. Valve body parts\">2. Valve body parts<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/p69.com.vn\/en\/van-tuyen-tinh-la-gi\/#Application_of_linear_valve\" title=\"Application of linear valve\">Application of linear valve<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/p69.com.vn\/en\/van-tuyen-tinh-la-gi\/#Advantages_of_linear_valve\" title=\"Advantages of linear valve\">Advantages of linear valve<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/p69.com.vn\/en\/van-tuyen-tinh-la-gi\/#The_most_popular_types_of_linear_valves_today\" title=\"The most popular types of linear valves today\">The most popular types of linear valves today<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/p69.com.vn\/en\/van-tuyen-tinh-la-gi\/#1_Linear_Control_Pneumatic_Valve\" title=\"1. Linear Control Pneumatic Valve\">1. Linear Control Pneumatic Valve<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/p69.com.vn\/en\/van-tuyen-tinh-la-gi\/#2_Linear_control_solenoid_valve\" title=\"2. Linear control solenoid valve\">2. Linear control solenoid valve<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/p69.com.vn\/en\/van-tuyen-tinh-la-gi\/#Working_principle_of_linear_valve\" title=\"Working principle of linear valve\">Working principle of linear valve<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/p69.com.vn\/en\/van-tuyen-tinh-la-gi\/#What_role_does_the_exciter_play_in_the_operating_principle_of_the_control_valve\" title=\"What role does the exciter play in the operating principle of the control valve?\">What role does the exciter play in the operating principle of the control valve?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/p69.com.vn\/en\/van-tuyen-tinh-la-gi\/#Contact_information_P69_-_M_E_Contractor\" title=\"Contact information P69 \u2013 M&amp;E Contractor\">Contact information P69 \u2013 M&amp;E Contractor<\/a><\/li><\/ul><\/nav><\/div>\n<h2 id=\"mcetoc_1fsfqfbo31\"><span class=\"ez-toc-section\" id=\"Linear_control_valve_specifications\"><\/span>Linear control valve specifications<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Valve sizes: DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300,&#8230; DN1000.<\/li>\n<li>Valve body type: ball valve, butterfly valve, globe valve, gate valve, knife valve<\/li>\n<li>Valve material: stainless steel, cast iron, plastic, steel, copper<\/li>\n<li>Control type: pneumatic control, electric control<\/li>\n<li>Mounting type: threaded, flanged, butterfly valve (wafer, lug), welded&#8230;<\/li>\n<li>Flange valve standards: JIS10k, BS, DIN, ANSI,&#8230;<\/li>\n<li>Signal: 4-20mA, 0 \u2013 10V<\/li>\n<li>Opening and closing: 10, 15, 20, 40, 45, 60, 90,&#8230; degrees<\/li>\n<li>Electrical control: 24V, 220V<\/li>\n<li>Pneumatic head: 0 \u2013 8bar<\/li>\n<li>Working temperature: &#8211; 5 degrees Celsius to 300 degrees Celsius<\/li>\n<li>Working pressure: PN10, PN16, PN25, PN40<\/li>\n<li>Working medium: water, gas, vapor, solution, chemical, fluid,&#8230;<\/li>\n<li>Origin: Taiwan, Korea, China, Japan, Europe<\/li>\n<li>Warranty 12 months<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Structure_of_a_linear_valve\"><\/span>Structure of a linear valve<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Like other control valves, the linear valve has two separate components that are put together: the actuator and the valve body.<\/p>\n<h3 id=\"bo-truyen-dong-va-bo-dieu-khien-tuyen-tinh\" class=\"ftwp-heading\"><span class=\"ez-toc-section\" id=\"1_Linear_actuators_and_controllers\"><\/span><strong>1. Linear actuators and controllers<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The actuator here is a crazy motor or a set of pneumatic cylinders. They are used to transmit torque to the vavle shaft that helps the valve operate.<\/p>\n<p>As for the electric actuator, it is integrated with a 4~20 mhA or 0~10V signal processor. For pneumatic actuators for linear control, it is necessary to add a pneumatic regulator (Posittioner) to regulate the compressed air to help the valve open and close at an angle.<\/p>\n<p>This regulator is also controlled by a pulse signal of 4~20 mhA. It is responsible for regulating the airflow, so that it is just enough to open and close according to the preset angle.<\/p>\n<h3 id=\"bo-phan-than-van\" class=\"ftwp-heading\"><span class=\"ez-toc-section\" id=\"2_Valve_body_parts\"><\/span><strong>2. Valve body parts<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>These are popular industrial valves such as ball valves, butterfly valves, gate valves, globe valves. All industrial valves can be used for linear control. However, if you want the most accurate adjustment, we should use a globe valve. Since the globe valve does not need a linear controller, it can be adjusted very well by itself.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Application_of_linear_valve\"><\/span>Application of linear valve<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>There are many applications where flow control valves are needed. Some typical applications are as follows:<\/p>\n<p>\u2013 Pressure control: At this time, the pneumatic linear control valve becomes a pressure regulator. With this function, we can be satisfied with the pneumatic valve for this application because of its accuracy and responsiveness.<\/p>\n<p>\u2013 Temperature control: Likewise, the pneumatic linear control valve runs the function for the temperature control valve with very high accuracy.\\<\/p>\n<p>\u2013 Flow control: To open and close the flow of a metering system with maintainability and linearity, the pneumatic linear valve is the perfect choice.<\/p>\n<p>These are 3 very common applications of pressure control valves.<\/p>\n<h2 id=\"mcetoc_1fsfqfbo3c\"><span class=\"ez-toc-section\" id=\"Advantages_of_linear_valve\"><\/span>Advantages of linear valve<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><strong>Linear valves<\/strong>\u00a0have\u00a0<strong>advantages<\/strong>\u00a0are automatically controlled without effort like mechanical valves.<\/li>\n<li><strong>Linear valve<\/strong>\u00a0can be used to open and close in many angles, used to regulate the fluid flow in the system.<\/li>\n<li><strong>Linear valve\u00a0<\/strong>can be used to install a variety of industrial valves such as butterfly valves, ball valves, globe valves, gate valves, knife valves.<\/li>\n<li><strong>Linear valve<\/strong>\u00a0can connect to the electrical cabinet and transmit the valve operation signal to the electrical cabinet system, making it easy to control the valve operation.<\/li>\n<li><strong>Linear valve<\/strong>\u00a0withstands high heat, high pressure, works well in many fluids, water, gas, steam, solutions, chemicals.<\/li>\n<li><strong>Linear valve<\/strong>\u00a0easy to install, use, service and maintain the valve.<\/li>\n<li><strong>Linear valve<\/strong>\u00a0has high quality, good price and is warranted by us for 12 months.<\/li>\n<li><strong>Linear valves<\/strong>\u00a0have a variety of origins, are imported genuine from many big countries China, Taiwan, Korea, Japan, Europe.<\/li>\n<\/ul>\n<h2 id=\"cac-loai-van-tuyen-tinh-pho-bien-hien-nay\" class=\"ftwp-heading ftwp-heading-target\"><span class=\"ez-toc-section\" id=\"The_most_popular_types_of_linear_valves_today\"><\/span>The most popular types of linear valves today<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Some of the more popular types of linear valves today include:<\/p>\n<h3 id=\"van-khi-nen-dieu-khien-tuyen-tinh\" class=\"ftwp-heading\"><span class=\"ez-toc-section\" id=\"1_Linear_Control_Pneumatic_Valve\"><\/span>1. Linear Control Pneumatic Valve<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>For linear control at the pneumatic valve, we need the help of a positioner regulator. The air line will enter the pneumatic regulator, the regulator receives the control pulse signal. Then, based on the opening and closing status of the valve, it will regulate the gas flow so that it opens to the required angle.<\/p>\n<p>Note, the regulator only uses compressed air pressure from 3-8 bar. Therefore, if the compressed air pressure is high, it is necessary to reduce the pressure before entering the pneumatic regulator.<\/p>\n<p><strong>Pneumatic valve<\/strong>\u00a0linear control is a stable and safe operation valve line. The valve opens and closes quickly, suitable for situations where quick changes are required. The disadvantage of the valve is that when operating, it generates a loud noise.<\/p>\n<h3 id=\"van-dien-dieu-khien-tuyen-tinh\" class=\"ftwp-heading\"><span class=\"ez-toc-section\" id=\"2_Linear_control_solenoid_valve\"><\/span>2. Linear control solenoid valve<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Unlike pneumatic valves, electric linear actuators have built-in pulse signal receivers. The linear electric actuator has a built-in control signal receiver. It also has an LCD screen to display the percentage of the valve opening and closing, which is very convenient. In addition, direct on-site control is possible thanks to the control keys integrated on the body of the electric actuator.<\/p>\n<p><strong>The solenoid\u00a0linear<\/strong> control valve has much higher accuracy than the pneumatic control valve series. Because it is integrated two in one, it has another advantage that is compact. With modern controllers, it is also integrated with overload protection. This helps the valve stop working when there is a problem or a hard object gets in the way.<\/p>\n<p>The disadvantage of this valve line is that it is much more expensive than compressed air. Its opening and closing time is also much longer than that of pneumatic valves.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Working_principle_of_linear_valve\"><\/span>Working principle of linear valve<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_3137\" aria-describedby=\"caption-attachment-3137\" style=\"width: 816px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3137 size-full\" title=\"Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a van tuy\u1ebfn t\u00ednh\" src=\"https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/09\/dieu-khien-tuyen-tinh.jpg\" alt=\"Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a van tuy\u1ebfn t\u00ednh\" width=\"816\" height=\"464\" srcset=\"https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/09\/dieu-khien-tuyen-tinh.jpg 816w, https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/09\/dieu-khien-tuyen-tinh-300x171.jpg 300w, https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/09\/dieu-khien-tuyen-tinh-768x437.jpg 768w, https:\/\/p69.com.vn\/wp-content\/uploads\/2022\/09\/dieu-khien-tuyen-tinh-600x341.jpg 600w\" sizes=\"auto, (max-width: 816px) 100vw, 816px\" \/><figcaption id=\"caption-attachment-3137\" class=\"wp-caption-text\"><em>Working principle of linear valve<\/em><\/figcaption><\/figure>\n<p>In terms of operating principle, all types of automatic valves or linear valves share the same operating mechanism and are mainly based on actuators, also known as agitators.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_role_does_the_exciter_play_in_the_operating_principle_of_the_control_valve\"><\/span><strong>What role does the exciter play in the operating principle of the control valve?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The actuators of all industrial valves are now divided into two types: pneumatic actuators and electric actuators. With two names, we can also easily identify the actuator&#8217;s motion structure, which is pneumatic and electric. This is the different part of these 2 actuators. The rest will be pretty much the same.<\/p>\n<p>The Actuator also has a moving gearbox that helps to change the torque and speed of the engine or compressed air and converts from circular motion to linear motion to help open and close the valve.<\/p>\n<p><strong>The working principle of electric control valve\u00a0or pneumatic control valve<\/strong> is very simple. The valve is opened and closed completely automatically thanks to the actuator. In order for the actuator to understand and act for the valve to open or close, it is necessary to have an additional board to recognize the linear signal or on\/off from the control device.<\/p>\n<p>Above is the basic part of the operating principle of the control valve. Hopefully the article will be helpful for you in learning about your \u00a0automatic control valves\u00a0.<\/p>\n<p>Contact us today for a free consultation and answer at:<\/p>\n<div dir=\"auto\">\n<h2><span class=\"ez-toc-section\" id=\"Contact_information_P69_-_M_E_Contractor\"><\/span><span id=\"Thong_tin_lien_he_P69_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span>Contact information P69 \u2013 M&amp;E Contractor<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Address: No. 6\/165C Xuan Thuy, Cau Giay District, Hanoi<\/p>\n<p>Website: https:\/\/p69.com.vn\/<\/p>\n<p>Hotline : 02437688156 \u2013 0965937799<\/p>\n<p>Email: kd@cokhip69.com.vn<\/p>\n<p>Facebook:\u00a0<a href=\"https:\/\/www.facebook.com\/p69nhathaucodien\" target=\"_blank\" rel=\"nofollow noopener\">https:\/\/www.facebook.com\/p69nhathaucodien<\/a><\/p>\n<p>LinkedIn:\u00a0<a href=\"https:\/\/www.linkedin.com\/in\/congtyp69\/\" target=\"_blank\" rel=\"nofollow noopener\">https:\/\/www.linkedin.com\/in\/congtyp69\/<\/a><\/p>\n<p>Youtube :\u00a0<a href=\"https:\/\/www.youtube.com\/channel\/UCOUwCnE5iGj8iqe_ZIUM7oA\" target=\"_blank\" rel=\"nofollow noopener\">https:\/\/www.youtube.com\/channel\/UCOUwCnE5iGj8iqe_ZIUM7oA<\/a><\/p>\n<\/div>\n<p><\/p>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;3130&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">Rate this post<\/span>\n    <\/div>\n    <\/div>","protected":false},"excerpt":{"rendered":"<p>In automation control systems, we often hear about linear valves or linear control valves. So what is a linear valve? Structure, application, working principle? Today P69 company will share with customers and help customers answer the above question. Linear control valve\u00a0is a valve that is automatically controlled by the signal\u00a0linear 4-20mA\u00a0or \u00a00-10V\u00a0with the task of [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":3136,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-3130","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v17.1.1 (Yoast SEO v20.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Van tuy\u1ebfn t\u00ednh l\u00e0 g\u00ec? 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