{"id":1997,"count":4,"description":"\r\n\r\n\r\n\r\nOBTENER PRECIO DE ASIENTO DE V\u00c1LVULA PCTFE<\/strong><\/a>\r\n\r\n\r\n\r\n\r\n

\u00bfQu\u00e9 es el material PCTFE?<\/h2>\r\n\r\n\r\n\r\n\r\nPCTFE (Policlorotrifluoroetileno) PCTFE (Policlorotrifluoroetileno) es un homopol\u00edmero de clorotrifluoroetileno. PCTFE es un fluoropol\u00edmero \u00fanico que es capaz de mantener sus propiedades f\u00edsicas a temperaturas de funcionamiento excepcionalmente bajas.\r\n\r\n\r\n\r\n\r\n\r\nEl PCTFE tiene excelentes caracter\u00edsticas de resistencia qu\u00edmica, resistencia a la radiaci\u00f3n e inflamabilidad. El material tiene un rango de temperatura \u00fatil de -400\u00b0F a 380\u00b0F. PCTFE es resistente al flujo en fr\u00edo y tiene el coeficiente de expansi\u00f3n t\u00e9rmica m\u00e1s bajo de cualquier fluoropol\u00edmero sin relleno. Estas caracter\u00edsticas lo convierten en una excelente opci\u00f3n cuando la estabilidad dimensional es cr\u00edtica.\r\n\r\n\r\n\r\n\r\n\r\nEl PCTFE se utiliza a menudo en aplicaciones aeroespaciales cuando se requiere resistencia qu\u00edmica, un amplio rango de temperatura de funcionamiento y baja inflamabilidad. Tambi\u00e9n se utiliza ampliamente para aplicaciones de v\u00e1lvulas criog\u00e9nicas.\r\n\r\n\r\n\r\n\r\n

Propiedades clave del material PCTFE<\/h2>\r\n\r\n\r\n\r\n
    \r\n \t
  • Dimensionalmente estable, r\u00edgido y resistente al flujo en fr\u00edo.<\/li>\r\n \t
  • Muy baja permeabilidad y desgasificaci\u00f3n de gas.<\/li>\r\n \t
  • Absorci\u00f3n de humedad casi nula<\/li>\r\n \t
  • Excelente resistencia qu\u00edmica<\/li>\r\n \t
  • Alta resistencia a la compresi\u00f3n<\/li>\r\n \t
  • Baja deformaci\u00f3n bajo carga<\/li>\r\n \t
  • No es inflamable<\/li>\r\n \t
  • Rango de temperatura: -400\u00b0 a 380\u00b0F<\/li>\r\n \t
  • Resistencia a la radiaci\u00f3n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
    \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
    Propiedad<\/td>\r\nValor<\/td>\r\nUnidades<\/td>\r\nM\u00e9todo<\/td>\r\n<\/tr>\r\n
    Resistencia a la tracci\u00f3n<\/td>\r\n4860 - 5710\r\n34 - 39<\/td>\r\npsi\r\nMPa<\/td>\r\nD 638<\/td>\r\n<\/tr>\r\n
    Alargamiento<\/td>\r\n100 - 250<\/td>\r\n%<\/td>\r\nD 638<\/td>\r\n<\/tr>\r\n
    Resistencia a la flexi\u00f3n, 73 \u00b0F<\/td>\r\n9570 - 10300\r\n66 - 71<\/td>\r\npsi\r\nMPa<\/td>\r\n<\/td>\r\n<\/tr>\r\n
    M\u00f3dulo de flexi\u00f3n<\/td>\r\n200 \u2013 243 x 103\r\n1.4 \u2013 1.7<\/td>\r\npsi\r\nMPa<\/td>\r\n<\/td>\r\n<\/tr>\r\n
    Resistencia al impacto, Izod, 23 grados C<\/td>\r\n2,5 \u2013 3,5<\/td>\r\npies-libra\/pulg.<\/td>\r\nD 256<\/td>\r\n<\/tr>\r\n
    Esfuerzo de compresi\u00f3n en la deformaci\u00f3n 1%,<\/td>\r\n1570 \u2013 1860\r\n11 - 13<\/td>\r\npsi\r\nMPa<\/td>\r\nD 695<\/td>\r\n<\/tr>\r\n
    Densidad<\/td>\r\n2.10 al 2.17<\/td>\r\ngm\/cm3<\/td>\r\n<\/td>\r\n<\/tr>\r\n
    Coeficiente de expansi\u00f3n lineal<\/td>\r\n7x10-5<\/td>\r\nK-1<\/td>\r\n<\/td>\r\n<\/tr>\r\n
    Punto de fusion<\/td>\r\n410 -414\r\n210 - 212<\/td>\r\ndeg F\r\ndeg C<\/td>\r\n<\/td>\r\n<\/tr>\r\n
    Conductividad t\u00e9rmica<\/td>\r\n1.45\r\n0.84<\/td>\r\nBtu\u00b7in\/h\u00b7ft2\u00b7\u00b0F\r\nW\/m\u00b7K<\/td>\r\nASTM C 177<\/td>\r\n<\/tr>\r\n
    Calor especifico<\/td>\r\n0.22\r\n0.92<\/td>\r\nBtu\/lb\/deg F\r\nkJ\/Kg\/deg K<\/td>\r\n<\/td>\r\n<\/tr>\r\n
    Temperatura de distorsi\u00f3n del calor, 66 lb\/pulgada cuadrada (0,455 MPa)<\/td>\r\n259\r\n126<\/td>\r\ndeg F\r\ndeg C<\/td>\r\nD 648<\/td>\r\n<\/tr>\r\n
    Temperatura de procesamiento<\/td>\r\n620\r\n327<\/td>\r\ndeg F\r\ndeg C<\/td>\r\n<\/td>\r\n<\/tr>\r\n
    Rigidez diel\u00e9ctrica, tiempo corto, 0,004\u201d<\/td>\r\n3000<\/td>\r\nvoltios\/mil<\/td>\r\nD 149<\/td>\r\n<\/tr>\r\n
    Resistencia al arco<\/td>\r\n360<\/td>\r\nsegundo<\/td>\r\nD 495<\/td>\r\n<\/tr>\r\n
    Resistividad de volumen, @ 50% RH<\/td>\r\n2x1017<\/td>\r\nohmios-cm<\/td>\r\nD 257<\/td>\r\n<\/tr>\r\n
    Resistividad de superficie, @ 100% RH<\/td>\r\n1x1015<\/td>\r\nOhmios cuadrados-1<\/td>\r\nD 257<\/td>\r\n<\/tr>\r\n
    Constante diel\u00e9ctrica, 1 kHz<\/td>\r\n2.6<\/td>\r\n\u03b5<\/td>\r\nD150-81<\/td>\r\n<\/tr>\r\n
    Factor de disipaci\u00f3n, @ 1 kHz<\/td>\r\n0.02<\/td>\r\n<\/td>\r\nD150-81<\/td>\r\n<\/tr>\r\n
    Absorci\u00f3n de agua<\/td>\r\n0.00<\/td>\r\n% aumento de peso<\/td>\r\nD570-81<\/td>\r\n<\/tr>\r\n
    Clasificaci\u00f3n de llama+<\/td>\r\nNo es inflamable<\/td>\r\n<\/td>\r\nD 635<\/td>\r\n<\/tr>\r\n
    Coeficiente de fricci\u00f3n<\/td>\r\n<\/td>\r\n<\/td>\r\nD 1894<\/td>\r\n<\/tr>\r\n
    Gravedad espec\u00edfica<\/td>\r\n2.10 al 2.17<\/td>\r\n<\/td>\r\nD792<\/td>\r\n<\/tr>\r\n
    Constante de permeabilidad a la humedad<\/td>\r\n0.2<\/td>\r\ng\/m2, 24 horas<\/td>\r\n<\/td>\r\n<\/tr>\r\n
    Permeabilidad al O2<\/td>\r\n1,5x10-10<\/td>\r\nCc, cm\/cm2, seg, atm<\/td>\r\n<\/td>\r\n<\/tr>\r\n
    Permeabilidad al N2<\/td>\r\n0,18x10-10<\/td>\r\nCc, cm\/cm2, seg, atm<\/td>\r\n<\/td>\r\n<\/tr>\r\n
    Permeabilidad al CO2<\/td>\r\n2,9x10-10<\/td>\r\nCc, cm\/cm2, seg, atm<\/td>\r\n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n

    Asiento de v\u00e1lvula de PCTFE<\/h2>\r\n\r\n\r\n\r\n\r\nLos asientos de las v\u00e1lvulas de bola que muestran signos de hinchaz\u00f3n, formaci\u00f3n de ampollas o \u201cpopcorning\u201d han sido permeados a nivel molecular. No hace falta decir que esto puede causar problemas graves, como fugas y fallas catastr\u00f3ficas. La soluci\u00f3n es encontrar un material para el asiento de la v\u00e1lvula de bola que sea altamente resistente a la permeaci\u00f3n y una excelente opci\u00f3n ser\u00eda el PCTFE. En la publicaci\u00f3n del blog de esta semana, hablaremos sobre los asientos de v\u00e1lvulas de bola de PCTFE y c\u00f3mo se utilizan en aplicaciones de baja permeaci\u00f3n.\r\n\r\n\r\n\r\n\r\n\r\nUno de los mejores materiales para una aplicaci\u00f3n de asiento de v\u00e1lvula de bola donde la permeabilidad es un problema ser\u00eda el PCTFE (policlorotrifluoroetileno), un clorofluoropol\u00edmero termopl\u00e1stico. A veces se hace referencia al PCTFE como PTFE modificado o PCTFE, as\u00ed como con los nombres comerciales Kel-F, Voltalef y Neoflon. A menudo se piensa que el PCTFE es un material de PTFE de segunda generaci\u00f3n que mantiene la resistencia qu\u00edmica y t\u00e9rmica del PTFE junto con su baja fricci\u00f3n. Tambi\u00e9n es similar a otros fluoropol\u00edmeros como PFA o FEP.\r\n\r\n\r\n\r\n\r\n\r\nUna de las caracter\u00edsticas definitorias del PCTFE es que tiene una estructura molecular mucho m\u00e1s densa y un bajo contenido de huecos y microporosidad en comparaci\u00f3n con materiales similares para asientos de v\u00e1lvulas de bola. Esto le confiere un coeficiente de permeabilidad muy bajo, lo que significa que la probabilidad de que se hinche o se haga palomitas es mucho menor que la de otros materiales. Por ejemplo, su permeabilidad al O2, N2, CO2 y H2 es 1,5 x 10-10, 0,18 x 10-10, 2,9 x 10-10 y 56,4 x 10-10 darcy, respectivamente.\r\n\r\n\r\n\r\n\r\n\r\nEl PCTFE tambi\u00e9n proporciona tenacidad y resistencia mejoradas junto con una buena recuperaci\u00f3n de la deformaci\u00f3n y una excelente resistencia a la fluencia y al flujo en fr\u00edo. Adem\u00e1s, tiene un amplio rango de temperatura de funcionamiento de -100\u00b0F a 500\u00b0F. De hecho, funciona extremadamente bien a temperaturas criog\u00e9nicas. Debido a su baja fricci\u00f3n, tambi\u00e9n resulta en un par de operaci\u00f3n de v\u00e1lvula de bola muy bajo. El PCTFE tambi\u00e9n presenta una absorci\u00f3n nula de humedad y no es humectante.\r\n\r\n\r\n\r\n\r\n\r\nEl PCTFE funciona bien en entornos operativos donde otros pol\u00edmeros pueden fallar. Por ejemplo, est\u00e1 bien adaptado al servicio nuclear que puede implicar una alta exposici\u00f3n a la radiaci\u00f3n, no es inflamable (D 635) y es resistente al ataque de la gran mayor\u00eda de productos qu\u00edmicos y agentes oxidantes. Los \u00fanicos productos qu\u00edmicos que pueden provocar una ligera hinchaz\u00f3n son los \u00e9teres, \u00e9steres, disolventes arom\u00e1ticos y compuestos de halocarbonos.\r\n\r\n","link":"https:\/\/zecovalve.com\/es\/tag\/pctfe-valve-seat","name":"Asiento de v\u00e1lvula de PCTFE","slug":"pctfe-valve-seat","taxonomy":"post_tag","meta":[],"yoast_head":"\nPCTFE Valve Seat - PCTFE Material | 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\/es\/tag\/pctfe-valve-seat\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PCTFE Valve Seat - PCTFE Material | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"GET PCTFE VALVE SEAT PRICE What is PCTFE Material? PCTFE (Polychlorotrifluoroethylene) PCTFE (Polychlorotrifluoroethylene) is a homopolymer of Chlorotrifluoroethylene. PCTFE is a unique fluoropolymer that is capable of maintaining its physical properties at exceptionally low operating temperatures. PCTFE has excellent chemical resistance, radiation resistance, and flammability characteristics. The material has a useful temperature range of -400\u00b0F to 380\u00b0F. PCTFE is resistant to cold flow and it has the lowest coefficient of thermal expansion of any unfilled fluoropolymer. These characteristics make it an excellent choice when dimensional stability is critical. PCTFE is often used for aerospace applications when chemical resistance, a broad operating temperature range, and low flammability are required. It is also extensively used for cryogenic valve applications. Key Properties of PCTFE Material Dimensionally stable, rigid, and resistant to cold flow Very low gas permeation and outgassing Near zero moisture absorption Excellent chemical resistance High compression strength Low deformation under load Non-flammable Temperature range: -400\u00b0 to 380\u00b0F Radiation Resistance Property Value Units Method Tensile Strength 4860 – 5710 34 – 39 psi MPa D 638 Elongation 100 – 250 % D 638 Flexural Strength, 73\u00b0F 9570 – 10300 66 – 71 psi MPa Flex Modulus 200 \u2013 243 x 103 1.4 \u2013 1.7 psi MPa Impact Strength, Izod, 23 deg C 2.5 \u2013 3.5 ft-lb\/in D 256 Compressive Stress at 1% deformation, 1570 \u2013 1860 11 – 13 psi MPa D 695 Density 2.10 to 2.17 gm\/cu.cm Coefficient of Linear Expansion 7 x 10-5 K-1 Melting Point 410 -414 210 – 212 deg F deg C Thermal Conductivity 1.45 0.84 Btu\u00b7in\/h\u00b7ft2\u00b7\u00b0F W\/m\u00b7K ASTM C 177 Specific Heat 0.22 0.92 Btu\/lb\/deg F kJ\/Kg\/deg K Heat Distortion Temperature, 66 lb\/sq.in (0.455 MPa) 259 126 deg F deg C D 648 Processing Temperature 620 327 deg F deg C Dielectric Strength, short time, 0.004\u201d 3000 Volt\/mil D 149 Arc-Resistance 360 sec D 495 Volume Resistivity, @ 50% RH 2 x 1017 ohm-cm D 257 Surface Resistivity, @ 100% RH 1 x 1015 Ohm sq-1 D 257 Dielectric Constant, 1 kHz 2.6 \u03b5 D150-81 Dissipation Factor, @ 1 kHz 0.02 D150-81 Water Absorption 0.00 % increase in weight D570-81 Flame Rating+ Non-flammable D 635 Coefficient of friction D 1894 Specific Gravity 2.10 to 2.17 D792 Moisture Permeability Constant 0.2 g\/m, 24 hours O2\u00a0Permeability 1.5 x 10-10 Cc, cm\/sq.cm, sec, atm N2\u00a0Permeability 0.18 x 10-10 Cc, cm\/sq.cm, sec, atm CO2\u00a0Permeability 2.9 x 10-10 Cc, cm\/sq.cm, sec, atm PCTFE Valve Seat Ball valve seats that show signs of swelling, blistering, or \u201cpopcorning\u201d have been permeated at a molecular level. Needless to say, this can cause some serious issues such as leaks and catastrophic failure. The solution is to find a ball valve seat material that is highly resistant to permeation and an excellent choice would be PCTFE. In this week\u2019s blog post, we will talk about PCTFE Ball Valve Seats and how they are used in Low Permeation Applications. One of the best materials for a ball valve seat application where permeability is a problem would be PCTFE (Polychlorotrifluoroethylene), a thermoplastic chlorofluoropolymer. PCTFE is sometimes referred to as Modified PTFE or PCTFE, as well as by trade names Kel-F, Voltalef, and Neoflon. PCTFE is often thought of as a second-generation PTFE material that maintains the chemical and thermal resistance of PTFE along with its low friction. It is also similar to other fluoropolymers such as PFA or FEP. One of the defining characteristics of PCTFE is that it has a much more dense molecular structure and a low void and micro-porosity content when compared to similar ball valve seat materials. This gives it a very low permeability coefficient, which means that the likelihood of it swelling or popcorning is far lower than other materials. For example, its permeability for O2, N2, CO2, and H2 are 1.5 x 10-10, 0.18 x 10-10, 2.9 x 10-10, and 56.4 x 10-10 darcy, respectively. PCTFE also provides improved toughness and strength along with good deformation recovery and excellent creep and cold-flow resistance. In addition, it has a wide operating temperature range of -100\u00b0F to 500\u00b0F. In fact, it performs extremely well at cryogenic temperatures. Because of its low friction, it also results in a very low ball valve operating torque. PCTFE also exhibits zero moisture absorption and is non-wetting. PCTFE works well in operating environments where other polymers may fail. For example, it is well adapted to nuclear service that may involve high radiation exposure, is non-flammable (D 635), and is resistant to attack by the vast majority of chemicals and oxidizing agents. The only chemicals that might lead to slight swelling are ethers, esters, aromatic solvents, and halocarbon compounds.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zecovalve.com\/es\/tag\/pctfe-valve-seat\" \/>\n<meta property=\"og:site_name\" content=\"ZECO Valve\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/zecovalve.com\/#website\",\"url\":\"https:\/\/zecovalve.com\/\",\"name\":\"ZECO Valve\",\"description\":\"Industrial Ball Valve, Gate Valve and Globe Valve Manufacturer\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/zecovalve.com\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"es\"},{\"@type\":\"CollectionPage\",\"@id\":\"https:\/\/zecovalve.com\/tag\/pctfe-valve-seat#webpage\",\"url\":\"https:\/\/zecovalve.com\/tag\/pctfe-valve-seat\",\"name\":\"PCTFE Valve Seat - PCTFE Material | ZECO Valve\",\"isPartOf\":{\"@id\":\"https:\/\/zecovalve.com\/#website\"},\"breadcrumb\":{\"@id\":\"https:\/\/zecovalve.com\/tag\/pctfe-valve-seat#breadcrumb\"},\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/zecovalve.com\/tag\/pctfe-valve-seat\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/zecovalve.com\/tag\/pctfe-valve-seat#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"item\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/zecovalve.com\/\",\"url\":\"https:\/\/zecovalve.com\/\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"position\":2,\"item\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/zecovalve.com\/tag\/pctfe-valve-seat\",\"url\":\"https:\/\/zecovalve.com\/tag\/pctfe-valve-seat\",\"name\":\"PCTFE Valve Seat\"}}]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","_links":{"self":[{"href":"https:\/\/zecovalve.com\/es\/wp-json\/wp\/v2\/tags\/1997","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zecovalve.com\/es\/wp-json\/wp\/v2\/tags"}],"about":[{"href":"https:\/\/zecovalve.com\/es\/wp-json\/wp\/v2\/taxonomies\/post_tag"}],"wp:post_type":[{"href":"https:\/\/zecovalve.com\/es\/wp-json\/wp\/v2\/posts?tags=1997"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}