{"id":14725,"date":"2026-05-06T03:07:49","date_gmt":"2026-05-06T03:07:49","guid":{"rendered":"https:\/\/npt-lok.com\/?p=14725"},"modified":"2026-05-08T01:28:45","modified_gmt":"2026-05-08T01:28:45","slug":"ponteira-simples-versus-ponteira-dupla","status":"publish","type":"post","link":"https:\/\/npt-lok.com\/pt\/single-ferrule-vs-double-ferrule\/","title":{"rendered":"Virola simples vs. virola dupla"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Voc\u00ea est\u00e1 instalando <a href=\"https:\/\/npt-lok.com\/pt\/conexoes-para-tubos\/\">conex\u00f5es para tubos<\/a>. Voc\u00ea precisa que elas suportem a press\u00e3o. Voc\u00ea precisa que elas n\u00e3o vazem. Voc\u00ea precisa saber qual escolher.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Este artigo aborda dois assuntos:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">O que fazem, de fato, as ponteiras simples e duplas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Qual deles se adequa \u00e0 sua press\u00e3o, vibra\u00e7\u00e3o e condi\u00e7\u00e3o do tubo?<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><b>Primeiro, saiba o que voc\u00ea realmente est\u00e1 pedindo.<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Quando voc\u00ea pergunta &quot;qual \u00e9 a diferen\u00e7a?&quot;, na verdade est\u00e1 perguntando &quot;o que devo comprar?&quot;.\u201c<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Uma ponteira \u00e9 basicamente um anel de metal com duas fun\u00e7\u00f5es principais. Primeiro, ajuda a vedar, garantindo que n\u00e3o haja vazamentos. Segundo, proporciona uma boa fixa\u00e7\u00e3o, para que o tubo ao qual est\u00e1 presa n\u00e3o se solte acidentalmente.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Virola simples: um \u00fanico anel realiza ambas as fun\u00e7\u00f5es.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/npt-lok.com\/pt\/conexoes-de-ponteira-dupla\/\">Virola dupla<\/a>Dois an\u00e9is dividem a pe\u00e7a. A ponteira frontal veda. A ponteira traseira fixa a pe\u00e7a.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-13855\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2025\/03\/Double-Ferrules-and-single-ferrule.jpg\" alt=\"Virolas duplas e virolas simples\" width=\"670\" height=\"380\" \/><\/p>\n<p><b>Ponteira simples: barata, suficientemente boa, dif\u00edcil de estragar.<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Um \u00fanico anel serve tanto para vedar quanto para fixar.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Por que voc\u00ea poderia escolher essa op\u00e7\u00e3o:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Press\u00e3o abaixo de 3.000-5.000 psi<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sem vibra\u00e7\u00e3o<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Or\u00e7amento apertado<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Voc\u00ea n\u00e3o \u00e9 um instalador especializado.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Bom para:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ind\u00fastria geral<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00c1gua, ar, hidr\u00e1ulica de baixa press\u00e3o<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Mercado de repara\u00e7\u00e3o e substitui\u00e7\u00e3o<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Em uma frase: Fa\u00e7a o trabalho. Sem frescuras.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Dupla virola: cara, resistente \u00e0 vibra\u00e7\u00e3o, dif\u00edcil de instalar.<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Dois an\u00e9is. Veda\u00e7\u00e3o da ponteira frontal. Fixa\u00e7\u00e3o da ponteira traseira. Dividir a pe\u00e7a.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Por que voc\u00ea poderia escolher essa op\u00e7\u00e3o:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Press\u00e3o acima de 6.000 psi<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">H\u00e1 vibra\u00e7\u00e3o presente em bombas, motores e compressores.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ind\u00fastrias qu\u00edmicas, petr\u00f3leo e g\u00e1s, gera\u00e7\u00e3o de energia<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Voc\u00ea precisa de tranquilidade: \u201cComprei o produto certo\u201d<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Bom para:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Construtores de pain\u00e9is de instrumenta\u00e7\u00e3o<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Projetos qu\u00edmicos e de petr\u00f3leo e g\u00e1s<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Fabricantes de equipamentos originais (OEMs) que exportam para a Europa ou \u00c1sia.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Sistemas que funcionam 24 horas por dia, 7 dias por semana.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Um aviso real: a import\u00e2ncia do tubo<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Eis algo que a maioria dos artigos n\u00e3o lhe diz.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">As conex\u00f5es de dupla virola exigem <\/span><a href=\"https:\/\/npt-lok.com\/pt\/tubos-de-aco-inoxidavel\/\"><b>tubos de recozimento brilhantes<\/b><\/a><span style=\"font-weight: 400;\">, enquanto as conex\u00f5es de virola \u00fanica funcionam com <\/span><b>tubos decapados em \u00e1cido<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Certa vez tivemos um cliente que comprou <\/span><b>tubos decapados em \u00e1cido<\/b><span style=\"font-weight: 400;\">. Como a maioria dos clientes exige conex\u00f5es com dupla anilha e o cliente n\u00e3o especificou o tipo de tubo que utiliza, enviamos conex\u00f5es com dupla anilha, que acabaram sendo in\u00fateis.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Aprenda com isso.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Antes de fazer seu pedido, verifique seu tubo. Ele \u00e9 recozido brilhante ou decapado? Se n\u00e3o souber, pergunte ao seu fornecedor de tubos. Ou envie-nos uma foto.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Se a instala\u00e7\u00e3o estiver errada, nada veda. N\u00e3o importa o qu\u00e3o bem encaixado esteja.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-14734\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/C-bright-annealed-vs-acid-pickled-tubes.jpg\" alt=\"Tubos recozidos brilhantes versus tubos tratados com \u00e1cido\" width=\"670\" height=\"380\" srcset=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/C-bright-annealed-vs-acid-pickled-tubes.jpg 670w, https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/C-bright-annealed-vs-acid-pickled-tubes-18x10.jpg 18w\" sizes=\"auto, (max-width: 670px) 100vw, 670px\" \/><\/p>\n<p><b>Outro alerta: saiba o que voc\u00ea est\u00e1 comprando.<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Aqui est\u00e1 outro erro que vemos o tempo todo.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tanto as conex\u00f5es de virola simples quanto as de virola dupla podem ser montadas diretamente nos tubos, enquanto as conex\u00f5es de flange n\u00e3o podem. Certa vez, tivemos um cliente que encomendou conex\u00f5es de flange. Ele achou que era o que precisava. No entanto, depois que enviamos as conex\u00f5es, <\/span><b>Eles perceberam que precisavam de uma m\u00e1quina de flangeamento adicional para montar as conex\u00f5es no tubo.<\/b><span style=\"font-weight: 400;\">. Eles me enviaram o v\u00eddeo sobre o tipo de conex\u00f5es que precisavam. As conex\u00f5es mostradas no v\u00eddeo eram do tipo anilha dupla, que podem ser montadas diretamente no tubo.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Aprenda com isso.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Antes de comprar, pergunte-se: &quot;Tenho as ferramentas necess\u00e1rias para essa conex\u00e3o?&quot;\u201c<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Virola dupla: somente com chave inglesa<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ponteira \u00fanica: somente com chave inglesa<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Conex\u00f5es de flangeamento: \u00e9 necess\u00e1ria uma m\u00e1quina de flangeamento.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Leva apenas dez segundos e economizar\u00e1 muito tempo no final.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Tabela de compara\u00e7\u00e3o r\u00e1pida<\/b><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Dimens\u00e3o<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ponteira \u00fanica<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Virola dupla<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Contagem de ponteiras<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2 (frente e verso)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Classifica\u00e7\u00e3o de press\u00e3o<\/span><\/td>\n<td><span style=\"font-weight: 400;\">3000-5000 psi<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Mais de 6000 psi<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Resist\u00eancia \u00e0 vibra\u00e7\u00e3o<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Bom<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Excelente<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">M\u00e9todos de instala\u00e7\u00e3o incorretos<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Mais de 14 anos<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Tubo necess\u00e1rio<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Em conserva<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Recozimento brilhante<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Reutiliza\u00e7\u00e3o<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Limitado: uma vez comprimido, o selo se degrada.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Sim, substitua a ponteira, reutilize o corpo e a porca.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Ideal para<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Press\u00e3o baixa a m\u00e9dia, sem vibra\u00e7\u00e3o.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Alta press\u00e3o, bombas, motores, instrumenta\u00e7\u00e3o<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-14731\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/C-Ferrule-Installation.jpg\" alt=\"Instala\u00e7\u00e3o de ponteira\" width=\"670\" height=\"380\" srcset=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/C-Ferrule-Installation.jpg 670w, https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/C-Ferrule-Installation-18x10.jpg 18w\" sizes=\"auto, (max-width: 670px) 100vw, 670px\" \/><\/p>\n<p><b>Instala\u00e7\u00e3o: 3\/4 de volta vs 1 1\/4 de volta<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A instala\u00e7\u00e3o de ponteiras simples e duplas difere de maneiras diferentes. Veja a diferen\u00e7a exata aqui.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ponteira simples:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Empurre o tubo at\u00e9 o final.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Aperte a porca manualmente.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Marque a porca \u00e0s 6 horas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Aperte com uma chave inglesa. <\/span><b>3\/4 de volta<\/b><span style=\"font-weight: 400;\"> (das 6 \u00e0s 3 horas)<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Ponteira dupla:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Empurre o tubo at\u00e9 o final.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Aperte a porca manualmente.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Marque a porca \u00e0s 6 horas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Aperte com uma chave inglesa. <\/span><b>1 volta e 1\/4<\/b><span style=\"font-weight: 400;\"> (das 6 \u00e0s 9 horas)<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Por que isso importa?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Porque se voc\u00ea apertar pouco, a conex\u00e3o vaza. Se apertar demais, voc\u00ea amassa o tubo ou danifica a ponteira.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">N\u00e3o precisa de chave dinamom\u00e9trica. Basta um marcador e uma chave. Marque a porca. Gire at\u00e9 a marca. S\u00f3 isso.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Este \u00e9 o m\u00e9todo padr\u00e3o DIN 2353. Utilizado mundialmente. Funciona sempre, independentemente da lubrifica\u00e7\u00e3o ou do estado da rosca.<\/span><\/p>\n<div style=\"width: 1248px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-14725-1\" width=\"1248\" height=\"720\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/Installation-of-fittings.mp4?_=1\" \/><a href=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/Installation-of-fittings.mp4\">https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/Installation-of-fittings.mp4<\/a><\/video><\/div>\n<p>&nbsp;<\/p>\n<p><b>Por que a maioria dos clientes escolhe a ponteira dupla?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A dupla ponteira \u00e9 o padr\u00e3o da ind\u00fastria h\u00e1 mais de 50 anos. A Swagelok e outras marcas l\u00edderes a utilizam.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Em instala\u00e7\u00f5es de petr\u00f3leo, g\u00e1s, qu\u00edmicas e de energia, onde a seguran\u00e7a \u00e9 fundamental, a resist\u00eancia \u00e0 vibra\u00e7\u00e3o e a veda\u00e7\u00e3o confi\u00e1vel da dupla virola a tornam a escolha \u00f3bvia.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Mas eis o que a maioria dos fornecedores n\u00e3o lhe conta.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">No design de dupla ponteira, a ponteira traseira tem uma \u00fanica fun\u00e7\u00e3o: segurar o tubo. Para segurar, ela precisa penetrar na superf\u00edcie do tubo. Isso significa que a borda de contato deve ser mais dura que o pr\u00f3prio tubo.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Endurecemos a borda de ader\u00eancia de cada ponteira traseira.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">N\u00e3o a ponteira inteira. Apenas a borda que se encaixa. Por qu\u00ea? Porque se voc\u00ea endurecer a ponteira inteira, ela fica muito r\u00edgida. O torque de instala\u00e7\u00e3o aumenta. Voc\u00ea precisa fazer for\u00e7a com a chave. A maioria das pessoas n\u00e3o quer isso.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Endurecimento padr\u00e3o: apenas na aresta de fixa\u00e7\u00e3o. Funciona para o modelo 95% dos clientes.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Endurecimento personalizado: endurecimento total das bordas. Alguns clientes solicitam esse servi\u00e7o. N\u00f3s o realizamos. Apenas esteja ciente de que a pe\u00e7a ficar\u00e1 diferente ao ser instalada. Mais firme. Mais pesada.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Aqui est\u00e1 uma foto de uma ponteira traseira com t\u00eampera personalizada em toda a borda. O cliente queria todas as bordas temperadas. E n\u00f3s conseguimos.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-14659\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/04\/C-Rear-Ferrule-Hardening2.png\" alt=\"Endurecimento da ponteira traseira2\" width=\"670\" height=\"380\" srcset=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/04\/C-Rear-Ferrule-Hardening2.png 670w, https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/04\/C-Rear-Ferrule-Hardening2-18x10.png 18w\" sizes=\"auto, (max-width: 670px) 100vw, 670px\" \/><\/p>\n<p><b>Perguntas frequentes<\/b><\/p>\n<p><span style=\"font-weight: 400;\">P1. Voc\u00eas t\u00eam f\u00e1brica pr\u00f3pria?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Sim. F\u00e1brica pr\u00f3pria. Sem margem de lucro de intermedi\u00e1rios.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q2. E se houver vazamento?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Em primeiro lugar, certifique-se de que a instala\u00e7\u00e3o foi feita corretamente. Muitos vazamentos ocorrem porque o tubo n\u00e3o est\u00e1 totalmente inserido ou a ponteira est\u00e1 colocada de forma incorreta. Testamos cada lote sob press\u00e3o antes do envio, ent\u00e3o provavelmente o problema est\u00e1 na configura\u00e7\u00e3o.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">P3. Voc\u00eas podem adicionar meu logotipo \u00e0s conex\u00f5es?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Sim. Marca\u00e7\u00e3o a laser. Corpo e ponteira. Seu logotipo, n\u00famero da pe\u00e7a ou n\u00famero do lote.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Q4. O que mais voc\u00ea fabrica?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">V\u00e1lvulas de agulha, v\u00e1lvulas de esfera, conex\u00f5es para tubos, an\u00e9is de veda\u00e7\u00e3o, v\u00e1lvulas de manifold. Fornecedor completo de acess\u00f3rios para instrumenta\u00e7\u00e3o.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-14733\" src=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/C-Ferrule-Structure.jpg\" alt=\"Estrutura da ponteira\" width=\"670\" height=\"380\" srcset=\"https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/C-Ferrule-Structure.jpg 670w, https:\/\/npt-lok.com\/wp-content\/uploads\/2026\/05\/C-Ferrule-Structure-18x10.jpg 18w\" sizes=\"auto, (max-width: 670px) 100vw, 670px\" \/><\/p>\n<p><b>Considera\u00e7\u00f5es finais<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Vou simplificar.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Virola simples ou virola dupla, n\u00e3o existe uma que seja melhor que a outra. Elas simplesmente desempenham fun\u00e7\u00f5es diferentes.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A ponteira \u00fanica \u00e9 para baixa press\u00e3o. Sem vibra\u00e7\u00e3o. Or\u00e7amento limitado.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A dupla virola \u00e9 para alta press\u00e3o. Bombas em funcionamento. Motores vibrando.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O erro mais comum? Usar uma \u00fanica ponteira em um <\/span><span style=\"font-weight: 400;\">linha vibrat\u00f3ria<\/span><span style=\"font-weight: 400;\">. Vaza. Voc\u00ea fica com raiva.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O segundo problema mais comum? Tubo errado. As ponteiras duplas em tubos decapados n\u00e3o vedam. N\u00e3o importa qu\u00e3o boa seja a conex\u00e3o.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Antes de fazer seu pedido, fa\u00e7a a si mesmo duas perguntas: Qual \u00e9 a press\u00e3o? H\u00e1 alguma vibra\u00e7\u00e3o?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Escolha o tamanho certo logo na primeira vez. Sem vazamentos. Sem devolu\u00e7\u00f5es. Sem dor de cabe\u00e7a.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>Procurando por um servi\u00e7o confi\u00e1vel <a href=\"https:\/\/npt-lok.com\/pt\/conexoes-de-virola\/\">encaixe de ponteira<\/a> Fornecedor? Experimente a NPTLOK.<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Fabricamos tanto para solteiros quanto para... <a href=\"https:\/\/npt-lok.com\/pt\/conexoes-de-ponteira-dupla\/\">conex\u00f5es de ponteira dupla<\/a>. <a href=\"https:\/\/npt-lok.com\/pt\/conexoes-para-tubos-de-aco-inoxidavel\/\">A\u00e7o inoxid\u00e1vel<\/a> e <a href=\"https:\/\/npt-lok.com\/pt\/conexoes-de-tubo-de-latao\/\">lat\u00e3o<\/a>. <a href=\"https:\/\/npt-lok.com\/pt\/conexoes-para-tubos-de-instrumentacao\/conexoes-npt\/\">TNP<\/a>, BSP ou threads m\u00e9tricas.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">F\u00e1brica pr\u00f3pria. Sem intermedi\u00e1rios. Rastreabilidade completa. Certificado de Teste de Manufatura (MTC) para cada lote.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Visite www.npt-lok.com ou envie um e-mail para yolanda2021@npt-lok.com.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Informe-nos a press\u00e3o e o di\u00e2metro do tubo que voc\u00ea est\u00e1 utilizando. Recomendaremos a conex\u00e3o adequada. Sem vendas adicionais desnecess\u00e1rias. Apenas conversa franca.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Gostaria de experimentar nossas amostras? Temos um pedido m\u00ednimo de 10 unidades, ent\u00e3o \u00e9 uma boa ideia test\u00e1-las antes de fazer um pedido maior.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>You&#8217;re installing tube fittings. You need them to hold pressure. You need them to not leak. You need to know which one to pick. This article covers two things: What single and double ferrule actually do Which one fits your pressure, vibration, and tube condition &nbsp; First, Know What You are Really Asking When you [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-14725","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Single Ferrule vs Double Ferrule - NPTLOK Instrumentation Tube Fittings and Valves Single Ferrule vs Double Ferrule<\/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:\/\/npt-lok.com\/pt\/ponteira-simples-versus-ponteira-dupla\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Single Ferrule vs Double Ferrule - NPTLOK Instrumentation Tube Fittings and Valves Single Ferrule vs Double Ferrule\" \/>\n<meta property=\"og:description\" content=\"You&#8217;re installing tube fittings. You need them to hold pressure. You need them to not leak. You need to know which one to pick. 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You need them to hold pressure. You need them to not leak. You need to know which one to pick. 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