{"id":17153,"date":"2022-06-27T08:12:35","date_gmt":"2022-06-27T08:12:35","guid":{"rendered":"https:\/\/zecovalve.com\/?p=17153"},"modified":"2022-08-15T03:45:33","modified_gmt":"2022-08-15T03:45:33","slug":"differential-pressure-control-valve-working-principle","status":"publish","type":"post","link":"https:\/\/zecovalve.com\/pt\/differential-pressure-control-valve-working-principle.html","title":{"rendered":"Princ\u00edpio de funcionamento da v\u00e1lvula de controle de press\u00e3o diferencial"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Para atender ao uso crescente de bombas de velocidade vari\u00e1vel para aplica\u00e7\u00f5es HVAC, a Hattersley lan\u00e7ou uma linha de V\u00e1lvulas de Controle de Press\u00e3o Diferencial (DPCV) especificamente destinadas a otimizar o desempenho do sistema.<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\">O que \u00e9 uma <strong><a href=\"https:\/\/zecovalve.com\/pt\/produto\/differential-pressure-control-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\"><mark style=\"background-color:var(--base)\" class=\"has-inline-color has-contrast-2-color\">V\u00e1lvula de controle de press\u00e3o diferencial<\/mark><\/a><\/strong>?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00e1lvulas de controle de press\u00e3o diferencial \u2013 tamb\u00e9m comumente chamadas de DPCVs \u2013 s\u00e3o instaladas em sistemas de aquecimento ou resfriamento para controlar a press\u00e3o do subcircuito at\u00e9 um m\u00e1ximo definido ou determinado.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Extremamente eficiente, o DPCV \u00e9 ajustado para uma press\u00e3o diferencial m\u00e1xima que garante que o fluxo n\u00e3o exceda a taxa desejada. Portanto, ajuda a reduzir o consumo de energia e o risco de ru\u00eddo e simplifica o processo de comissionamento.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A linha ZECO DPCV inclui tr\u00eas tipos diferentes. Um tipo com \u0394pC predefinido (press\u00e3o diferencial no circuito), um tipo com \u0394pC ajust\u00e1vel e, finalmente, um tipo que \u00e9 uma v\u00e1lvula de balanceamento din\u00e2mico combinada e DPCV ajust\u00e1vel. Eles oferecem uma gama flex\u00edvel que atende a qualquer demanda do sistema.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"330\" height=\"300\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/differential-pressure-control-valve.jpg\" alt=\"V\u00e1lvula de controle de press\u00e3o diferencial\" class=\"wp-image-17033\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/differential-pressure-control-valve.jpg 330w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/differential-pressure-control-valve-300x273.jpg 300w\" sizes=\"auto, (max-width: 330px) 100vw, 330px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">Princ\u00edpio de funcionamento da v\u00e1lvula de controle de press\u00e3o diferencial<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A v\u00e1lvula de controle de press\u00e3o diferencial n\u00e3o necessita de nenhuma energia externa. Ele pode ajustar automaticamente dependendo da mudan\u00e7a de press\u00e3o do pr\u00f3prio meio regulado, eliminar automaticamente a mudan\u00e7a de fluxo causada pela press\u00e3o residual e flutua\u00e7\u00e3o de press\u00e3o da rede de tubula\u00e7\u00e3o e manter constante a diferen\u00e7a de press\u00e3o entre a entrada e a sa\u00edda do usu\u00e1rio. \u00c9 especialmente adequado para medi\u00e7\u00e3o dom\u00e9stica ou sistema de controle autom\u00e1tico, o que conduz \u00e0 opera\u00e7\u00e3o est\u00e1vel do sistema.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A v\u00e1lvula de controle de press\u00e3o diferencial \u00e9 de estrutura de disco duplo, com pequena for\u00e7a desequilibrada e estrutura compacta. \u00c9 utilizado no sistema de \u00e1gua de aquecimento (ar condicionado) para manter constante a press\u00e3o diferencial do sistema controlado. De acordo com o princ\u00edpio de funcionamento da v\u00e1lvula de controle de press\u00e3o diferencial, os usu\u00e1rios que instalam a v\u00e1lvula de controle de press\u00e3o diferencial n\u00e3o instalam o dispositivo de controle autom\u00e1tico. Sob a diferen\u00e7a m\u00ednima de press\u00e3o de trabalho, quando o di\u00e2metro do tubo selecionado for muito grande e a resist\u00eancia for reduzida, o fluxo ser\u00e1 muito grande, o que inevitavelmente causar\u00e1 o desequil\u00edbrio hidr\u00e1ulico da rede externa e aumentar\u00e1 o consumo de energia.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A v\u00e1lvula de controle de press\u00e3o diferencial \u00e9 composta pelo corpo da v\u00e1lvula, tampa da v\u00e1lvula, mola do n\u00facleo da v\u00e1lvula, condu\u00edte de controle e regulador de press\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A v\u00e1lvula \u00e9 instalada no tubo de retorno da tubula\u00e7\u00e3o de aquecimento e a c\u00e2mara de trabalho da v\u00e1lvula \u00e9 conectada ao tubo de abastecimento de \u00e1gua atrav\u00e9s do tubo de controle. Elimine o desvio de fluxo causado pela flutua\u00e7\u00e3o de press\u00e3o da rede externa. Quando a press\u00e3o do abastecimento de \u00e1gua P1 aumenta, a diferen\u00e7a de press\u00e3o do abastecimento de \u00e1gua P1-P3 aumenta. A membrana sensora de press\u00e3o aciona o n\u00facleo da v\u00e1lvula para baixo para fechar a pequena porta da v\u00e1lvula, de modo que P2 aumenta, mantendo assim o P1-P2 constante. Quando a press\u00e3o do fornecimento de \u00e1gua P1 diminui, a membrana sensora de press\u00e3o faz com que o n\u00facleo da v\u00e1lvula se mova para cima e P2 diminui, de modo que P1-P2 seja constante. N\u00e3o importa como a press\u00e3o muda na tubula\u00e7\u00e3o, a v\u00e1lvula din\u00e2mica de equil\u00edbrio de press\u00e3o diferencial pode manter a press\u00e3o e o fluxo constantes aplicados ao objeto controlado.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-self-operated-differential-pressure-control-valve-working-principle\">Princ\u00edpio de funcionamento da v\u00e1lvula de controle de press\u00e3o diferencial autooperada<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Depois que o meio do processo \u00e9 estrangulado pela v\u00e1lvula, ele entra no equipamento controlado, e a press\u00e3o diferencial do equipamento controlado \u00e9 introduzida respectivamente nas c\u00e2maras de membrana superior e inferior da v\u00e1lvula, gerando impulso nas c\u00e2maras de membrana superior e inferior, e equilibrando com a for\u00e7a de rea\u00e7\u00e3o da mola, de modo a determinar a posi\u00e7\u00e3o relativa do n\u00facleo da v\u00e1lvula e da sede da v\u00e1lvula, enquanto a posi\u00e7\u00e3o relativa do n\u00facleo da v\u00e1lvula e da sede da v\u00e1lvula determina o tamanho do valor da press\u00e3o diferencial. Quando a press\u00e3o diferencial controlada muda, o equil\u00edbrio da for\u00e7a \u00e9 destru\u00eddo, o que impulsiona o movimento do n\u00facleo da v\u00e1lvula, e o movimento do n\u00facleo da v\u00e1lvula altera o coeficiente de resist\u00eancia da v\u00e1lvula, ou seja, o valor da press\u00e3o diferencial controlada \u00e9 controlado como o valor definido. Este \u00e9 o princ\u00edpio de funcionamento da v\u00e1lvula de controle de press\u00e3o diferencial. Quando o valor de configura\u00e7\u00e3o da press\u00e3o diferencial precisar ser alterado, a porca de ajuste poder\u00e1 ser ajustada.<\/p>\n\n\n\n<!-- Andy:h-related-tags -->\n<h2 id=\"h-related-tags\">Etiquetas relacionadas :<\/h2>\n<!-- \/Andy:h-related-tags -->\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/\">V\u00e1lvula ZECO<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/difference-between-gate-valve-and-butterfly-valve.html\/\">Diferen\u00e7a entre a v\u00e1lvula de gaveta e a v\u00e1lvula de borboleta<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/difference-between-gate-valves-and-ball-valves.html\/\">V\u00e1lvula de gaveta vs V\u00e1lvula de esfera<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/introduction-of-epdm-nbr-butterfly-valve-seat-industrial-valve-information-news-zeco-valve.html\/\">V\u00e1lvula borboleta NBR<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/pt\/history-of-automatic-control-valve-zeco-valve-industrial-valve-manufacturer.html\/\">O que s\u00e3o v\u00e1lvulas de controlo autom\u00e1ticas?<\/a>\n\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Para atender ao uso crescente de bombas de velocidade vari\u00e1vel para aplica\u00e7\u00f5es HVAC, a Hattersley lan\u00e7ou uma linha de v\u00e1lvulas de controle de press\u00e3o diferencial\u2026 <a title=\"Princ\u00edpio de funcionamento da v\u00e1lvula de controle de press\u00e3o diferencial\" class=\"read-more\" href=\"https:\/\/zecovalve.com\/pt\/differential-pressure-control-valve-working-principle.html\" aria-label=\"Mais em Princ\u00edpio de funcionamento da v\u00e1lvula de controle de press\u00e3o diferencial\">Ler mais<\/a><\/p>","protected":false},"author":2,"featured_media":17033,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[2447],"tags":[3674,3673,2517,3675,2560],"class_list":["post-17153","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-balancing-valve","tag-automatic-balancing-valve-working-principle","tag-control-valve-working-principle","tag-differential-pressure-control-valve","tag-differential-pressure-control-valve-working-principle","tag-dpcv","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":["https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/differential-pressure-control-valve.jpg",330,300,false],"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/pt\/author\/jerry"},"comment_info":0,"category_info":[{"term_id":2447,"name":"Balancing Valve","slug":"balancing-valve","term_group":0,"term_taxonomy_id":2447,"taxonomy":"category","description":"","parent":0,"count":21,"filter":"raw","cat_ID":2447,"category_count":21,"category_description":"","cat_name":"Balancing Valve","category_nicename":"balancing-valve","category_parent":0}],"tag_info":[{"term_id":3674,"name":"automatic balancing valve working principle","slug":"automatic-balancing-valve-working-principle","term_group":0,"term_taxonomy_id":3674,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":3673,"name":"control valve working principle","slug":"control-valve-working-principle","term_group":0,"term_taxonomy_id":3673,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2517,"name":"differential pressure control valve","slug":"differential-pressure-control-valve","term_group":0,"term_taxonomy_id":2517,"taxonomy":"post_tag","description":"","parent":0,"count":9,"filter":"raw"},{"term_id":3675,"name":"differential pressure control valve working principle","slug":"differential-pressure-control-valve-working-principle","term_group":0,"term_taxonomy_id":3675,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2560,"name":"DPCV","slug":"dpcv","term_group":0,"term_taxonomy_id":2560,"taxonomy":"post_tag","description":"<!-- wp:paragraph -->\r\n\r\nTo meet the growing use of variable speed pumps for HVAC applications, ZECO Fluid Systems has launched a range of Differential Pressure Control Valves (DPCV) specifically aimed at optimizing system performance.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nExtremely efficient, the DPCV is set to a maximum differential pressure which ensures flow cannot exceed the desired rate. It, therefore, helps reduce energy consumption, and the risk of noise and simplifies the commissioning process.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:kadence\/tableofcontents {\"uniqueID\":\"_53a72f-f5\"} \/-->\r\n\r\n<!-- wp:generateblocks\/button-container {\"uniqueId\":\"6d8495a3\",\"isDynamic\":true,\"blockVersion\":2} -->\r\n<!-- wp:generateblocks\/button {\"uniqueId\":\"3d442e11\",\"hasUrl\":true,\"target\":true,\"backgroundColor\":\"#0366d6\",\"textColor\":\"#ffffff\",\"backgroundColorHover\":\"#222222\",\"textColorHover\":\"#ffffff\",\"paddingTop\":\"15\",\"paddingRight\":\"20\",\"paddingBottom\":\"15\",\"paddingLeft\":\"20\"} -->\r\n<a class=\"gb-button gb-button-3d442e11 gb-button-text\" href=\"mailto:commercial@zecovalve.com\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>GET DCPV VALVE PRICE<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-what-is-dcpv\">What is DCPV?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nDifferential Pressure Control Valves - also commonly called DPCVs - are installed in heating or cooling systems to control sub-circuit pressure to a set or given maximum.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nZECO\u2019s DPCV range includes three different types. A type with pre-set \u0394pC (differential pressure across the circuit), a type with adjustable \u0394pC, and finally a type being a combined dynamic balancing valve and adjustable DPCV. They offer a flexible range meeting any system demand.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>What is Differential Pressure Control?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nA differential pressure controller consists of a valve and a pressure actuator. Differential pressure controllers in the primary system are mainly used to keep a constant and lower differential pressure across a motorized control valve or a total system\/substation.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Specifications of DPCV<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>Nominal diameter: DN25 \u2013 DN50<\/li>\r\n \t<li>Media temperature : -10\u00b0C to 120\u00b0C<\/li>\r\n \t<li>Pressure range: 16 bars- 25 bars<\/li>\r\n \t<li>Permissible medium\/application: Chilled\/hot water, Glycol solution, Cooling water<\/li>\r\n \t<li>Connection: Threaded BSP<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:image {\"align\":\"center\",\"id\":27252,\"width\":384,\"height\":512,\"sizeSlug\":\"large\",\"linkDestination\":\"none\"} -->\r\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img class=\"wp-image-27252\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/10\/DPCV-768x1024.jpg\" alt=\"DPCV\" width=\"384\" height=\"512\" \/><figcaption>DPCV<\/figcaption><\/figure>\r\n<!-- \/wp:image -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>Nominal diameter: DN65 \u2013 DN250<\/li>\r\n \t<li>Media temperature : -10\u00b0C to 120\u00b0C<\/li>\r\n \t<li>Pressure range: 16 bars -25 bars<\/li>\r\n \t<li>Permissible medium\/application: Chilled\/hot water, Glycol solution, Cooling water<\/li>\r\n \t<li>Connection: RF<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:image {\"align\":\"center\",\"id\":17033,\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} -->\r\n<figure class=\"wp-block-image aligncenter size-full\"><img class=\"wp-image-17033\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/differential-pressure-control-valve.jpg\" alt=\"Differential Pressure Control Valve\" \/><\/figure>\r\n<!-- \/wp:image -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Why choose a DPCV?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nWith a DPCV installed in Your system, You will achieve reduced energy consumption, avoid the risk of annoying noise and have a simple commissioning process.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>How does a DPCV Work?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nA DPCV includes a diaphragm, a spring, and a capillary tube connecting the partner valve in the supply pipe and the DPCV valve in the return pipe to control the circuit pressure loss.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe differential pressure control valve (DPCV) is a special kind of control valve whose action is related to a measured pressure difference. In practice, the DPCV is used in several applications as will be further explained basically, its goal is to maintain a constant pressure difference across a certain part of the hydraulic network. Inside the DPCV, two cavities are separated by means of a membrane. One cavity is internally connected to the upstream side of the DPCV while the other one is connected to a remote location by means of a small capillary pipe. This way, the differential pressure across the membrane equals the pressure difference between the upstream measuring point and the DPCV. The resulting spindle travel depends on the force balance between the membrane and the spring.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\n\u2022 \u0394P Control\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe DPCV diaphragm will regulate to control \u0394pC (differential pressure across the circuit) depending on pressure impulse from the supply side and direct pressure from the return side. The spring force will equal the \u0394pC.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nIn all ZECO DPCVs, the diaphragm will be a rolling diaphragm which will result in a very compact valve design. Depending on the ZECO Differential Pressure Control Valve selected, \u0394pC may be fixed or externally adjustable.\r\n\r\n<!-- \/wp:paragraph -->","parent":0,"count":12,"filter":"raw"}],"taxonomy_info":{"category":[{"value":2447,"label":"Balancing Valve"}],"post_tag":[{"value":3674,"label":"automatic balancing valve working principle"},{"value":3673,"label":"control valve working principle"},{"value":2517,"label":"differential pressure control valve"},{"value":3675,"label":"differential pressure control valve working principle"},{"value":2560,"label":"DPCV"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Differential Pressure Control Valve Working Principle | ZECO Valve<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zecovalve.com\/pt\/differential-pressure-control-valve-working-principle.html\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Differential Pressure Control Valve Working Principle | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"To meet the growing use of variable speed pumps for HVAC applications, Hattersley has launched a range of Differential Pressure Control Valves ... 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