{"id":16147,"date":"2022-06-19T14:16:02","date_gmt":"2022-06-19T14:16:02","guid":{"rendered":"https:\/\/zecovalve.com\/?post_type=product&#038;p=16147"},"modified":"2023-06-07T07:02:42","modified_gmt":"2023-06-07T07:02:42","slug":"top-entry-ball-valve","status":"publish","type":"product","link":"https:\/\/zecovalve.com\/pt\/produto\/top-entry-ball-valve","title":{"rendered":"V\u00e1lvula de esfera de entrada superior"},"content":{"rendered":"<p>Devido \u00e0 natureza distinta das condi\u00e7\u00f5es ambientais e operacionais do processo, uma v\u00e1lvula de esfera t\u00edpica n\u00e3o \u00e9 suficiente e o sistema exige alto desempenho. Usando a estrutura de entrada superior, n\u00e3o \u00e9 necess\u00e1rio remover a v\u00e1lvula esf\u00e9rica da linha quando a sede \u00e9 reparada ou substitu\u00edda, portanto \u00e9 f\u00e1cil verificar e manter a v\u00e1lvula esf\u00e9rica.<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image alignnone size-medium wp-image-16148\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" class=\"wp-image-16148\" src=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/top-entry-ball-valve-300x225.jpg\" alt=\"V\u00e1lvula de esfera de entrada superior\" srcset=\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/top-entry-ball-valve-300x225.jpg 300w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/top-entry-ball-valve-768x576.jpg 768w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/top-entry-ball-valve-600x450.jpg 600w, https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/top-entry-ball-valve.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\r\n\r\n\r\n<div class=\"gb-button-wrapper gb-button-wrapper-6d8495a3\">\r\n\r\n\r\n<p><a class=\"gb-button gb-button-3d442e11 gb-button-text\" href=\"https:\/\/zecovalve.com\/pt\/contact\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>OBTENHA O MELHOR PRE\u00c7O DE V\u00c1LVULA DE ESFERA DE ENTRADA<\/strong><\/a><\/p>\r\n<\/div>\r\n\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\" id=\"h-what-is-a-top-entry-ball-valve\">O que \u00e9 uma v\u00e1lvula esf\u00e9rica de entrada superior?<\/h2>\r\n\r\n\r\n\r\n<p>As v\u00e1lvulas esfera de entrada superior s\u00e3o as v\u00e1lvulas que montam a esfera a partir da extremidade superior. \u00c9 bastante semelhante a uma v\u00e1lvula globo que possui corpo e tampa, exceto que a parte do acabamento usa um tipo esf\u00e9rico. Consiste em uma \u00fanica entidade. Normalmente, as v\u00e1lvulas esfera de entrada superior s\u00e3o feitas de metal fundido.<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Constru\u00e7\u00e3o do corpo da v\u00e1lvula esf\u00e9rica de entrada superior<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>O design do cap\u00f4 da carroceria apresenta constru\u00e7\u00e3o aparafusada e seu dimensionamento est\u00e1 em conformidade com os requisitos fornecidos na ASME VIII Div. 1<\/li>\r\n<li>A constru\u00e7\u00e3o aparafusada permite a desmontagem em linha para inspe\u00e7\u00f5es e poss\u00edveis reparos<\/li>\r\n<li>A remo\u00e7\u00e3o do castelo da v\u00e1lvula permite o livre acesso \u00e0 esfera e \u00e0s sedes, que podem ser retiradas simultaneamente sem a necessidade de ferramentas especiais de manuten\u00e7\u00e3o<\/li>\r\n<li>Ap\u00f3s a manuten\u00e7\u00e3o, a integridade da superf\u00edcie de assentamento pode ser avaliada pressurizando apenas a cavidade do corpo, antes de qualquer repressuriza\u00e7\u00e3o da tubula\u00e7\u00e3o (projeto DPE padr\u00e3o)<\/li>\r\n<li>Dreno do corpo fornecido na parte inferior da cavidade do corpo, com v\u00e1lvula de drenagem NPT com tamp\u00e3o de seguran\u00e7a<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Projeto da v\u00e1lvula esf\u00e9rica de entrada superior<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Entrada principal<\/li>\r\n<li>Munh\u00e3o montado<\/li>\r\n<li>Alavanca ou engrenagem operada<\/li>\r\n<li>Assento individual com assento DPE<\/li>\r\n<li>Veda\u00e7\u00e3o de haste livre de grafite \u00e0 prova de fogo<\/li>\r\n<li>Conex\u00e3o corpo-cobertura duplamente selada<\/li>\r\n<li>Extremidades estendidas para solda de topo<\/li>\r\n<li>Flanges soldados opcionais com inspe\u00e7\u00e3o radiogr\u00e1fica para soldagens<\/li>\r\n<li>Testes de produ\u00e7\u00e3o de acordo com EN 12266-1, API 598, API 6D<\/li>\r\n<li>Teste criog\u00eanico (sob demanda): BS 6364<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Como funciona uma v\u00e1lvula esfera de entrada superior?<\/h2>\r\n\r\n\r\n\r\n<p>As v\u00e1lvulas esfera possuem uma esfera que \u00e9 sustentada na parte inferior por um munh\u00e3o. Quando o furo \u00e9 posicionado na dire\u00e7\u00e3o do condu\u00edte, a v\u00e1lvula fica na posi\u00e7\u00e3o aberta, deixando o fluido entrar. A haste come\u00e7a a descer e, por causa dos canais usinados nela, ela gira 90\u00b0, fazendo com que a esfera para virar o mesmo. Ent\u00e3o, alguns dos canais s\u00e3o usinados retos e a haste n\u00e3o pode simplesmente descer.<\/p>\r\n\r\n\r\n\r\n<p>Neste caso, devido \u00e0 superf\u00edcie angulada, a haste conduz a esfera at\u00e9 o munh\u00e3o inferior e a sede. A bola s\u00f3 atinge o assento nesta posi\u00e7\u00e3o e n\u00e3o h\u00e1 press\u00e3o durante o restante do movimento.<\/p>\r\n\r\n\r\n\r\n<p>A v\u00e1lvula esf\u00e9rica de entrada superior vem em duas configura\u00e7\u00f5es principais:<\/p>\r\n\r\n\r\n\r\n<p>Full Bore: O tamanho do acabamento \u00e9 o mesmo para o condu\u00edte. Neste caso, a v\u00e1lvula \u00e9 ideal para <a href=\"https:\/\/zecovalve.com\/pt\/understanding-pigging-and-pig-valves-in-industrial-pipelines-zeco-valve-blog.html\/\" data-internallinksmanager029f6b8e52c=\"12\" title=\"pigmenta\u00e7\u00e3o\" target=\"_blank\" rel=\"noopener\">pigmenta\u00e7\u00e3o<\/a>. Furo reduzido: A altura do acabamento \u00e9 menor que o tamanho da tubula\u00e7\u00e3o.<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\" id=\"h-features-of-top-entry-ball-valves\">Caracter\u00edsticas das v\u00e1lvulas de esfera de entrada superior<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Assento de material macio, met\u00e1lico ou composto.<\/li>\r\n<li>Fechamento herm\u00e9tico bidirecional.<\/li>\r\n<li>Bloqueio duplo e sangramento.<\/li>\r\n<li>\u00c0 prova de fogo e testado contra fogo.<\/li>\r\n<li>Projeto de baixo torque operacional.<\/li>\r\n<li>Vasta gama de materiais e tamanhos.<\/li>\r\n<li>Assentos com mola.<\/li>\r\n<li>Munh\u00e3o montado com assentos energizados.<\/li>\r\n<li>Design de haste anti-explos\u00e3o.<\/li>\r\n<li>Adequado para instala\u00e7\u00e3o acima ou abaixo do solo.<\/li>\r\n<li>Assento de material macio, met\u00e1lico ou composto.<\/li>\r\n<li>Corpo fundido leve.<\/li>\r\n<li>Desligamento Classe V.<\/li>\r\n<li>Gaxeta da haste em grafite.<\/li>\r\n<li>Projeto forjado.<\/li>\r\n<li>Sem corte no fluxo de vapor.<\/li>\r\n<li>Perfil c\u00f4nico para minimizar a vibra\u00e7\u00e3o induzida pelo fluxo.<\/li>\r\n<li>Bocal de pulveriza\u00e7\u00e3o vari\u00e1vel.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Aplica\u00e7\u00f5es de v\u00e1lvulas esfera de entrada superior<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Fluidos corrosivos<\/li>\r\n<li>Gasodutos Natual<\/li>\r\n<li>Oleodutos<\/li>\r\n<li>Refinarias<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\" id=\"h-material-of-top-entry-ball-valve\">Material da v\u00e1lvula esf\u00e9rica de entrada superior:<\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td>N\u00e3o<\/td>\r\n<td>Parte<\/td>\r\n<td>Material<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>1<\/td>\r\n<td>Corpo<\/td>\r\n<td>ASTM A351 CF8M<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>2<\/td>\r\n<td>Bon\u00e9<\/td>\r\n<td>ASTM A351 CF8M<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>3<\/td>\r\n<td>Bola<\/td>\r\n<td>ASTM A182 F316<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>4<\/td>\r\n<td>Assento<\/td>\r\n<td>ASTM A182 F316 + DEVLON<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>5<\/td>\r\n<td>Caule<\/td>\r\n<td>ASTM A276 316<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>6<\/td>\r\n<td>Dispositivo anti-est\u00e1tico<\/td>\r\n<td>SS316<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>7<\/td>\r\n<td>Junta de veda\u00e7\u00e3o<\/td>\r\n<td>Grafite + SS316<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>8<\/td>\r\n<td>Parafuso<\/td>\r\n<td>ASTM A193 B8M<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>9<\/td>\r\n<td>Porca<\/td>\r\n<td>ASTM A194 8M<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>10<\/td>\r\n<td>O-ring<\/td>\r\n<td>Viton A<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>11<\/td>\r\n<td>Engrenagem<\/td>\r\n<td>Conjunto<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>","protected":false},"excerpt":{"rendered":"<p>Devido \u00e0 natureza distinta das condi\u00e7\u00f5es ambientais e operacionais do processo, uma v\u00e1lvula de esfera t\u00edpica n\u00e3o \u00e9 suficiente\u2026 <a title=\"V\u00e1lvula de esfera de entrada superior\" class=\"read-more\" href=\"https:\/\/zecovalve.com\/pt\/produto\/top-entry-ball-valve\" aria-label=\"Mais em V\u00e1lvula Esfera de Entrada Superior\">Ler mais<\/a><\/p>","protected":false},"featured_media":27852,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":""},"product_cat":[2047,2459],"product_tag":[3896,3913],"class_list":["post-16147","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-ball-valve","product_cat-ball-valve-by-form","product_tag-flanged-ball-valve","product_tag-full-port-ball-valve","sales-flash-overlay","woocommerce-text-align-center","woocommerce-image-align-center","do-quantity-buttons"],"featured_image_src_large":["https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/06\/Top-Entry-Ball-Valve-1.jpg",800,600,false],"author_info":[],"comment_info":0,"taxonomy_info":{"product_cat":[{"value":2047,"label":"Ball Valve"},{"value":2459,"label":"Ball Valve By Form"}],"product_tag":[{"value":3896,"label":"Flanged Ball Valve"},{"value":3913,"label":"Full Port Ball Valve"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - 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