{"id":6952,"date":"2026-09-01T09:30:00","date_gmt":"2026-09-01T01:30:00","guid":{"rendered":"https:\/\/www.onerovalve.com\/?p=6952"},"modified":"2026-09-02T09:14:46","modified_gmt":"2026-09-02T01:14:46","slug":"chemical-industry-ball-valve-material-selection","status":"publish","type":"post","link":"https:\/\/www.onerovalve.com\/es\/blog\/application\/chemical-industry-ball-valve-material-selection\/","title":{"rendered":"V\u00e1lvulas de bola qu\u00edmicas: Gu\u00eda de selecci\u00f3n de materiales"},"content":{"rendered":"

Respuesta r\u00e1pida:<\/h2>\n\n\n\n

Para el correcto funcionamiento de la v\u00e1lvula de bola qu\u00edmica, debe ser resistente al fluido, soportar la temperatura y la presi\u00f3n del sistema y ser capaz de mantener el sellado durante decenas de miles de ciclos. En cualquier caso, se producir\u00eda corrosi\u00f3n, da\u00f1ando los asientos y causando paradas inesperadas. El manual contiene informaci\u00f3n sobre los principales requisitos para la selecci\u00f3n de materiales, los tipos de materiales que se pueden utilizar y lo que se debe verificar antes de la compra al fabricante. Desde 1986, ONERO ha estado fabricando API 6D<\/a> V\u00e1lvulas de bola certificadas en su f\u00e1brica de 18.000 metros cuadrados en la provincia de Zhejiang, China.<\/p>\n\n\n\n

\u00bfPor qu\u00e9 es fundamental la selecci\u00f3n de materiales en las aplicaciones qu\u00edmicas?<\/h2>\n\n\n\n

Una selecci\u00f3n inadecuada de materiales provocar\u00e1 fallos, y estos no se limitar\u00e1n a la falla de una v\u00e1lvula que no funcione correctamente debido a fugas. El cuerpo que se corroe al exponerse a cloruros forma picaduras y rompe el l\u00edmite de presi\u00f3n. La superficie de asiento que se hincha al exponerse a disolventes no mantiene el perfil de sellado. El v\u00e1stago, corro\u00eddo en la aplicaci\u00f3n con gas \u00e1cido, no soportar\u00e1 el par de apriete requerido.<\/p>\n\n\n\n

La compatibilidad qu\u00edmica de la v\u00e1lvula de bola es m\u00e1s una cuesti\u00f3n de ingenier\u00eda que de compra. Debe basarse en informaci\u00f3n precisa sobre el fluido, su concentraci\u00f3n, temperatura y presi\u00f3n.<\/p>\n\n\n\n

\"Factores<\/figure>\n\n\n\n

\u00bfQu\u00e9 factores determinan el material adecuado para la v\u00e1lvula?<\/h2>\n\n\n\n

Contenido qu\u00edmico<\/h3>\n\n\n\n

El contenido de iones cloruro es el factor determinante en el acero inoxidable. Por encima de ciertos niveles, la corrosi\u00f3n por picaduras y por hendiduras representan modos de falla reales, independientemente de la calidad. Los disolventes org\u00e1nicos atacan la mayor\u00eda de los cauchos y elast\u00f3meros y requieren aleaciones espec\u00edficas. El \u00e1cido fluorh\u00eddrico ataca todos los materiales y requiere aleaciones especiales.<\/p>\n\n\n\n

Rango de temperatura de funcionamiento<\/h3>\n\n\n\n

Los asientos de PTFE se utilizan hasta los 200 grados cent\u00edgrados. Por encima de esta temperatura, se requieren asientos rellenos de PTFE o de PEEK. Por debajo de las temperaturas criog\u00e9nicas, el material de la carrocer\u00eda debe superar las pruebas de impacto Charpy. Por encima de los 400 grados cent\u00edgrados, solo se utilizan asientos met\u00e1licos.<\/p>\n\n\n\n

Clase de presi\u00f3n y clasificaci\u00f3n de brida<\/h3>\n\n\n\n

Las clases de alta presi\u00f3n requieren un material de alta resistencia a la fluencia. Es aplicable a todo tipo de v\u00e1lvulas de bola qu\u00edmicas de Clase 600 y superiores. La verificaci\u00f3n del cumplimiento del material con la clasificaci\u00f3n de presi\u00f3n-temperatura de Normativa ASME B16.34<\/a> es una necesidad absoluta.<\/p>\n\n\n\n

Servicio de material particulado y lodos<\/h3>\n\n\n\n

La presencia de part\u00edculas provoca un desgaste acelerado de los asientos y las bolas, un desgaste que no puede determinarse \u00fanicamente a partir de los datos de corrosi\u00f3n. El recubrimiento de carburo de tungsteno endurecido de las bolas proporciona una vida \u00fatil significativamente mayor en aplicaciones con lodos.<\/p>\n\n\n\n

Ciclos de funcionamiento<\/h3>\n\n\n\n

Los ciclos altos provocan un desgaste m\u00e1s r\u00e1pido de los asientos y del material de embalaje. Las emisiones fugitivas por ISO 15848-1 <\/a>Las normas entran en vigor para las aplicaciones de alto ciclo.<\/p>\n\n\n\n

\u00bfC\u00f3mo se comparan los materiales del cuerpo de las v\u00e1lvulas de bola?<\/h2>\n\n\n\n
Material<\/strong><\/td>Resistencia a la corrosi\u00f3n<\/strong><\/td>Costo<\/strong><\/td>Mejores aplicaciones<\/strong><\/td><\/tr>
Acero al carbono (A216 WCB)<\/td>Bajo (no apto para medios corrosivos)<\/td>Bajo<\/td>Hidrocarburos no corrosivos<\/td><\/tr>
Acero inoxidable 316L (CF3M)<\/td>Cloruro bueno y moderado<\/td>Moderado<\/td>Productos qu\u00edmicos generales, \u00e1cidos suaves<\/td><\/tr>
D\u00faplex 2205<\/td>Cloruro alto y elevado<\/td>Moderada-alta<\/td>Agua de mar, alto contenido de cloruro, \u00e1cida<\/td><\/tr>
Superd\u00faplex 2507<\/td>Cloruro muy alto y severo<\/td>Alto<\/td>Cloruro agresivo en alta mar<\/td><\/tr>
Hastelloy C276<\/td>Excelente, oxidante y reductor.<\/td>Muy alto<\/td>\u00c1cido fluorh\u00eddrico, \u00e1cidos mixtos<\/td><\/tr>
Monel 400<\/td>Excelente, HF y \u00e1lcalis<\/td>Alto<\/td>\u00c1cido fluorh\u00eddrico, agua de mar, sosa c\u00e1ustica<\/td><\/tr>
Acero al carbono revestido de PTFE<\/td>Buena y amplia gama qu\u00edmica.<\/td>Moderado<\/td>\u00c1cidos agresivos, cloro<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u00bfPor qu\u00e9 el acero inoxidable 316L supera al 304 en el servicio de cloruros?<\/h3>\n\n\n\n

Al seleccionar una v\u00e1lvula de bola qu\u00edmica para medios que contienen cloruro, F\u00f3rmula PREN<\/a> Aplicable a: PREN = %Cr + 3,3 x %Mo + 16 x %N. El acero inoxidable 304 est\u00e1ndar no contiene molibdeno, lo que da un PREN de aproximadamente 18 a 20. El acero inoxidable 316L a\u00f1ade de un 2 a un 3 por ciento de molibdeno, elevando el PREN a aproximadamente 24 a 28. Por esta raz\u00f3n, el acero inoxidable 316L es el est\u00e1ndar para uso qu\u00edmico, en lugar del 304.<\/p>\n\n\n\n

\"Gu\u00eda<\/figure>\n\n\n\n

\u00bfC\u00f3mo se deben elegir los materiales de la bola, la potencia y el asiento?<\/h2>\n\n\n\n

Materiales para la bola y el v\u00e1stago<\/h3>\n\n\n\n

Se puede utilizar acero inoxidable 316L est\u00e1ndar para v\u00e1lvulas de bola convencionales en procesos qu\u00edmicos. Se recomienda el acero inoxidable d\u00faplex 2205 para ambientes con alto contenido de cloruro. Para aplicaciones corrosivas y abrasivas, se pueden utilizar recubrimientos de carburo de tungsteno endurecido. El acero inoxidable Monel K500 debe utilizarse para ambientes corrosivos.<\/p>\n\n\n\n\n Producto destacado<\/title>\n <style>\n \/* Added !important tags to prevent WordPress theme interference *\/\n .hero-card, .hero-card:hover, .hero-card:focus {\n display: flex;\n flex-wrap: wrap;\n align-items: center;\n padding: 24px;\n max-width: 900px;\n margin: 40px auto;\n font-family: 'Poppins', Arial, sans-serif;\n text-decoration: none !important;\n color: inherit;\n\n \/* \u2014\u2014 Neumorphism \u5185\u51f9 \u2014\u2014 *\/\n background: #f7f8fa;\n border-radius: 16px;\n border: 1px solid #e5e7eb;\n box-shadow:\n inset 6px 6px 12px rgba(0,0,0,0.08),\n inset -6px -6px 12px rgba(255,255,255,0.9);\n\n transition: all 0.3s ease; \n }\n\n .hero-card:hover {\n box-shadow:\n 0 8px 20px rgba(0,0,0,0.12),\n 0 4px 8px rgba(0,0,0,0.06);\n transform: translateY(-4px);\n }\n\n .hero-image {\n width: 220px;\n height: auto;\n border-radius: 12px;\n object-fit: cover;\n flex-shrink: 0;\n transition: transform 0.3s ease; \n }\n\n .hero-card:hover .hero-image {\n transform: scale(1.03);\n }\n\n .hero-content {\n padding-left: 24px;\n flex: 1;\n min-width: 260px;\n transition: transform 0.3s ease;\n }\n\n .hero-title {\n font-size: 1.6rem;\n font-weight: 600;\n margin-bottom: 12px;\n color: #222;\n }\n\n .hero-description {\n font-size: 1rem;\n color: #555;\n margin-bottom: 18px;\n font-weight: 400;\n line-height: 1.6;\n }\n\n .hero-link {\n display: inline-block;\n padding: 10px 20px;\n background-color: #1569AE; \/* \u9002\u914d\u4e86\u9600\u95e8\u54c1\u724c\u7684\u4e3b\u9898\u84dd *\/\n color: #fff !important;\n text-decoration: none !important;\n border-radius: 8px;\n font-weight: 600;\n transition: background 0.2s ease-in-out;\n }\n\n .hero-link:hover {\n background-color: #125a96;\n }\n\n @media (max-width: 640px) {\n .hero-card {\n flex-direction: column;\n text-align: center;\n }\n\n .hero-content {\n padding-left: 0;\n padding-top: 20px;\n }\n\n .hero-image {\n width: 100%;\n max-width: 280px;\n }\n }\n <\/style>\n\n\n\n<a class=\"hero-card\" href=\"https:\/\/www.onerovalve.com\/es\/product\/trunnion-ball-valve\/\" target=\"_blank\">\n <img decoding=\"async\" class=\"hero-image\" src=\"https:\/\/onerovalve.b-cdn.net\/wp-content\/uploads\/2024\/08\/Web-1920-%E2%80%93-9.jpg\" alt=\"V\u00e1lvula de bola de mu\u00f1\u00f3n\">\n \n <div class=\"hero-content\">\n <div class=\"hero-title\">V\u00e1lvula de bola de mu\u00f1\u00f3n<\/div>\n\n <div class=\"hero-description\">\n <strong>Tama\u00f1o:<\/strong> 2\u2033~48\u2033<br>\n <strong>Presi\u00f3n:<\/strong> Entre 150 y 2500 libras<br>\n <strong>Temperatura aplicable:<\/strong> -196 ~ 350 \u2103\n <\/div>\n\n <span class=\"hero-link\">Ver producto<\/span>\n <\/div>\n<\/a>\n\n\n\n<h3 class=\"wp-block-heading\">Asientos de PTFE y otras posibilidades<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">El <a href=\"https:\/\/www.onerovalve.com\/es\/blog\/ball-valve-seat-material-compatibility-guide\/\" target=\"_blank\" rel=\"noreferrer noopener\">V\u00e1lvula de bola revestida de PTFE<\/a> Puede utilizarse con una amplia gama de productos qu\u00edmicos hasta 200 grados Celsius. El PTFE reforzado con fibra de vidrio ofrece una mayor resistencia a la deformaci\u00f3n. El PTFE reforzado con carbono funciona bien en aplicaciones de alta presi\u00f3n. El RPTFE est\u00e1 reforzado con fibras para una mayor resistencia al calor. Los asientos de PEEK ampl\u00edan el rango de temperatura hasta 260 grados Celsius con una mayor resistencia a los disolventes. Especifique PEEK solo si se superan las capacidades del PTFE.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Una v\u00e1lvula de bola resistente a productos qu\u00edmicos para servicios con disolventes o a altas temperaturas se beneficiar\u00e1 especialmente de la especificaci\u00f3n de asientos de PEEK.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Asientos de metal<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.onerovalve.com\/es\/product\/hard-seated-ball-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\">Asientos de metal<\/a> Se utilizan en aplicaciones donde la temperatura supera los l\u00edmites de resistencia del PTFE o el PEEK, y en condiciones abrasivas. Las v\u00e1lvulas de bola para procesamiento qu\u00edmico, con asientos de metal a metal y que soportan altas temperaturas, garantizan que el material del asiento no se degrade y proporcionan un cierre herm\u00e9tico. La contrapartida es un mayor par de apriete.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00f3mo elegir un fabricante de v\u00e1lvulas de bola fiable<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Certificaciones que son importantes<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La norma API 6D establece el est\u00e1ndar para el dise\u00f1o, la fabricaci\u00f3n y las pruebas de tuber\u00edas y v\u00e1lvulas qu\u00edmicas. La certificaci\u00f3n CE\/PED es importante para acceder al mercado europeo. La certificaci\u00f3n NACE MR0175 es esencial para aplicaciones en ambientes corrosivos.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La norma ISO 15848-1 establece las pruebas de emisiones fugitivas en el empaquetado del v\u00e1stago de las v\u00e1lvulas, y se aplica a las v\u00e1lvulas utilizadas en procesos qu\u00edmicos donde se controlan las emisiones de compuestos org\u00e1nicos vol\u00e1tiles. El modelo ONERO cuenta con las certificaciones API 6D, ISO 9001, ISO 14001, ISO 45001, CE y AP1607.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Instalaciones de prueba internas<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La prueba hidrost\u00e1tica del cuerpo demuestra la integridad del l\u00edmite de presi\u00f3n. La prueba de fugas del asiento seg\u00fan la norma API 6D Clase A\/B demuestra la capacidad de cierre herm\u00e9tico.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u00bfPor qu\u00e9 un fabricante de 38 a\u00f1os supera al comerciante?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La trazabilidad de los materiales, que implica el seguimiento de la procedencia de los componentes de la v\u00e1lvula (cuerpo, bola, v\u00e1stago y asiento) hasta la certificaci\u00f3n del fabricante, es posible en las instalaciones del fabricante. La v\u00e1lvula de bola resistente a productos qu\u00edmicos, que opera en condiciones agresivas, requiere trazabilidad de los materiales. Los 38 a\u00f1os de experiencia en fabricaci\u00f3n de ONERO, sus 8 patentes de I+D y sus servicios ODM para contratistas EPC demuestran una infraestructura inigualable.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Lista de verificaci\u00f3n para la selecci\u00f3n de materiales y dise\u00f1o para compradores<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Antes de seleccionar cualquier v\u00e1lvula para servicio qu\u00edmico, aseg\u00farese de que se confirme la siguiente informaci\u00f3n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Composici\u00f3n del fluido de proceso, incluidos los materiales traza.<\/li>\n\n\n\n<li>Contenido de cloruro si se est\u00e1 considerando el acero inoxidable<\/li>\n\n\n\n<li>Rango de temperatura, incluidas las temperaturas extremas.<\/li>\n\n\n\n<li>Clase de presi\u00f3n ASME seg\u00fan B16.34<\/li>\n\n\n\n<li>Presiones parciales de H2S y CO2 en caso de servicio \u00e1cido<\/li>\n\n\n\n<li>Tama\u00f1o y concentraci\u00f3n de part\u00edculas abrasivas en el caso de servicio con lodos<\/li>\n\n\n\n<li>Clase de emisiones fugitivas seg\u00fan ISO 15848-1<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">La verificaci\u00f3n de la compatibilidad qu\u00edmica de la v\u00e1lvula de bola con respecto a los datos de corrosi\u00f3n publicados para el fluido espec\u00edfico en condiciones de servicio reales es el paso final antes de finalizar la especificaci\u00f3n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Preguntas frecuentes<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u00bfQu\u00e9 material es el mejor para las v\u00e1lvulas de bola qu\u00edmicas?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No existe un \u00fanico material \u00f3ptimo. El acero inoxidable 316L es adecuado para la mayor\u00eda de los servicios qu\u00edmicos generales. El acero d\u00faplex 2205 o el superd\u00faplex 2507 son id\u00f3neos para servicios con alto contenido de cloruro o en ambientes corrosivos. El Hastelloy C276 o el Monel 400 se utilizan para medios agresivos, incluido el \u00e1cido fluorh\u00eddrico.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u00bfEs el acero inoxidable SS316 apto para uso con \u00e1cidos?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">El acero inoxidable 316L es adecuado para muchas aplicaciones con \u00e1cidos diluidos a temperaturas moderadas. No es apto para \u00e1cido sulf\u00farico concentrado a concentraciones intermedias, \u00e1cido fluorh\u00eddrico a ninguna concentraci\u00f3n ni \u00e1cido clorh\u00eddrico a temperaturas elevadas. Consulte siempre los datos de corrosi\u00f3n para el \u00e1cido, la concentraci\u00f3n y la temperatura espec\u00edficos.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Asientos de PTFE frente a asientos de PEEK: \u00bfcu\u00e1l es mejor?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Una v\u00e1lvula de bola revestida de PTFE es adecuada para la mayor variedad de productos qu\u00edmicos y la mayor\u00eda de las aplicaciones hasta 200 grados Celsius. El PEEK ampl\u00eda la capacidad de temperatura hasta 260 grados Celsius, con mejor resistencia a los disolventes y mejor comportamiento ante la deformaci\u00f3n. Especifique PEEK solo cuando se alcancen los l\u00edmites reales del PTFE.<\/p>\n\n\n\n<style>\n \/* \u6837\u5f0f\u9694\u79bb\uff1a\u9632\u6b62\u5f71\u54cd\u6574\u7ad9\u5176\u4ed6\u5143\u7d20 *\/\n .valve-nav-banner {\n position: relative;\n width: 100%;\n max-width: 900px;\n min-height: 280px;\n margin: 40px auto;\n border-radius: 12px;\n overflow: hidden;\n display: flex;\n flex-direction: column;\n align-items: center;\n justify-content: center;\n text-align: center;\n padding: 40px 20px;\n box-sizing: border-box;\n font-family: 'Poppins', Arial, sans-serif;\n background-image: url('https:\/\/onerovalve.b-cdn.net\/wp-content\/uploads\/2024\/08\/banner-2.jpg');\n background-size: cover;\n background-position: center;\n }\n\n \/* \u9ed1\u8272\u534a\u900f\u660e\u906e\u7f69\u5c42\uff0c\u786e\u4fdd\u767d\u8272\u6587\u5b57\u5728\u590d\u6742\u80cc\u666f\u56fe\u4e0a\u4f9d\u7136\u6e05\u6670\u53ef\u8bfb *\/\n .valve-nav-banner::before {\n content: '';\n position: absolute;\n top: 0;\n left: 0;\n width: 100%;\n height: 100%;\n background: rgba(0, 0, 0, 0.55); \n z-index: 1;\n }\n\n .valve-nav-content {\n position: relative;\n z-index: 2;\n max-width: 750px;\n }\n\n \/* \u52a0\u7c97\u7684\u6807\u9898\u6837\u5f0f *\/\n .valve-nav-title {\n color: #ffffff;\n font-size: 26px;\n line-height: 1.4;\n margin: 0 0 25px 0;\n }\n\n \/* CTA \u6309\u94ae\u6837\u5f0f\uff1a\u5df2\u9002\u914d Onero Valve \u54c1\u724c\u4e13\u5c5e\u84dd #1569AE *\/\n .valve-cta-btn {\n display: inline-block;\n background-color: #1569AE;\n color: #ffffff !important;\n font-size: 16px;\n font-weight: 600;\n text-decoration: none !important;\n padding: 14px 36px;\n border-radius: 6px;\n transition: all 0.3s ease;\n border: 2px solid #1569AE;\n }\n\n \/* \u4ea4\u4e92\u8272\uff1a\u60ac\u505c\u65f6\u80cc\u666f\u53d8\u767d\uff0c\u6587\u5b57\u53d8\u4e3b\u9898\u8272 *\/\n .valve-cta-btn:hover {\n background-color: #ffffff;\n color: #1569AE !important;\n border-color: #ffffff;\n }\n\n @media (max-width: 600px) {\n .valve-nav-title {\n font-size: 20px;\n }\n .valve-nav-banner {\n min-height: 220px;\n }\n }\n<\/style>\n\n<div class=\"valve-nav-banner\">\n <div class=\"valve-nav-content\">\n <p class=\"valve-nav-title\"><strong>V\u00e1lvulas industriales de alto rendimiento. Descubra nuestra gama completa de productos.<\/strong><\/p>\n <a href=\"https:\/\/www.onerovalve.com\/es\/products\/\" target=\"_blank\" class=\"valve-cta-btn\">Ver todos los productos<\/a>\n <\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Quick Answer: For proper working of the chemical ball valve, it has to be resistant to the fluid, endure the temperature and pressure of the system,<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":6956,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61],"tags":[],"class_list":["post-6952","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-application"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Chemical Ball Valves: Material Selection Guide | ONERO<\/title>\n<meta name=\"description\" content=\"Chemical ball valve material guide for chemical process: compare carbon steel,316L,duplex 2205\/2507, Hastelloy, PTFE & PEEK seats. 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