{"id":4144,"date":"2026-02-14T09:00:00","date_gmt":"2026-02-14T09:00:00","guid":{"rendered":"https:\/\/www.desopipe.com\/?p=4144"},"modified":"2026-03-06T08:02:51","modified_gmt":"2026-03-06T08:02:51","slug":"pn25-ppr-valves-for-solar-heating","status":"publish","type":"post","link":"https:\/\/www.desopipe.com\/es\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/","title":{"rendered":"Soluciones de alta presi\u00f3n: Cu\u00e1ndo especificar v\u00e1lvulas PPR PN25 en sistemas de calefacci\u00f3n solar"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u00cdndice<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Alternar tabla de contenidos\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.desopipe.com\/es\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/#Pressure_Temperature_in_Solar_Heating_Systems\" >Presi\u00f3n y temperatura en sistemas de calefacci\u00f3n solar<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.desopipe.com\/es\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/#What_is_the_Difference_Between_a_PN20_and_a_PN_25_Valve\" >\u00bfCu\u00e1l es la diferencia entre una v\u00e1lvula PN20 y una PN 25?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.desopipe.com\/es\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/#Failure_Risks_of_Under-Specification\" >Riesgos de falla por subespecificaciones<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.desopipe.com\/es\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/#Selecting_Valves_for_Long-Term_Stability\" >Selecci\u00f3n de v\u00e1lvulas para estabilidad a largo plazo<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.desopipe.com\/es\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/#DESO_High-Pressure_Valve_Solutions\" >Soluciones de v\u00e1lvulas de alta presi\u00f3n DESO<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.desopipe.com\/es\/blog\/ppr-valve\/pn25-ppr-valves-for-solar-heating\/#Conclusion\" >Conclusi\u00f3n<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">En la industria de la plomer\u00eda moderna, los sistemas PPR son el material est\u00e1ndar para las tuber\u00edas de agua caliente y fr\u00eda. Esta norma debe estar respaldada por el cumplimiento internacional, incluyendo la norma ISO 9001 de gesti\u00f3n de calidad y... <a href=\"https:\/\/www.desopipe.com\/es\/certificate\/\" target=\"_blank\" rel=\"noreferrer noopener\">Normas DIN 8077\/8078<\/a>. Esto garantiza que cada tuber\u00eda y <strong>v\u00e1lvula PPR<\/strong> Cumple con las especificaciones de resistencia a la presi\u00f3n y estabilidad t\u00e9rmica a largo plazo.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sin embargo, no todas las tuber\u00edas de PPR (copol\u00edmero aleatorio de polipropileno) soportan altas temperaturas. Por eso, es necesario consultar la clasificaci\u00f3n &quot;PN&quot; para determinar si la tuber\u00eda o v\u00e1lvula puede soportar dicho rango de temperaturas.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>V\u00e1lvula PN 25<\/strong> Es la v\u00e1lvula m\u00e1s pesada y tiene una clasificaci\u00f3n de 25 bares de presi\u00f3n (aproximadamente 362 psi). Puede usar una clasificaci\u00f3n est\u00e1ndar PN16 o PN20 para un fregadero de cocina est\u00e1ndar. Sin embargo, si el sistema de plomer\u00eda est\u00e1 sometido a una gran presi\u00f3n, necesitar\u00e1 v\u00e1lvulas con clasificaci\u00f3n PN25. En este art\u00edculo, aprender\u00e1 a seleccionar la v\u00e1lvula adecuada para sus sistemas solares t\u00e9rmicos.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Pressure_Temperature_in_Solar_Heating_Systems\"><\/span>Presi\u00f3n y temperatura en sistemas de calefacci\u00f3n solar<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Los colectores solares son dispositivos que se instalan con sistemas solares t\u00e9rmicos. Captan y recogen la luz solar y la convierten en energ\u00eda utilizable. Suelen instalarse en edificios de apartamentos altos y alcanzan temperaturas m\u00e1ximas de 80 \u00b0C (176 \u00b0F). Por lo tanto, <strong>V\u00e1lvula de calefacci\u00f3n PPR<\/strong> En un circuito solar se debe gestionar un fluido que fluct\u00faa entre la temperatura ambiente y puntos cercanos a la ebullici\u00f3n.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Durante cortes de energ\u00eda o fallas de la bomba en d\u00edas extremadamente calurosos, el sistema puede estancarse. Esto puede provocar que la presi\u00f3n interna aumente r\u00e1pidamente a medida que el fluido se expande. Un est\u00e1ndar <strong>v\u00e1lvula PPR<\/strong> Puede desgastarse si el <a href=\"https:\/\/www.desopipe.com\/es\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/\" target=\"_blank\" rel=\"noreferrer noopener\">Clasificaci\u00f3n PN<\/a> No puede soportar los picos de expansi\u00f3n t\u00e9rmica. Adem\u00e1s, la capacidad de soportar presi\u00f3n del PPR disminuye al aumentar la temperatura de operaci\u00f3n.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Por lo tanto, al seleccionar una <strong>v\u00e1lvula PPR de alta temperatura<\/strong> Con la clasificaci\u00f3n PN correcta, se deber\u00eda mantener un margen de seguridad de 70 \u00b0C o 95 \u00b0C. En este caso, una v\u00e1lvula de 25 bar es la opci\u00f3n est\u00e1ndar para su sistema de calefacci\u00f3n solar.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_Difference_Between_a_PN20_and_a_PN_25_Valve\"><\/span>\u00bfCu\u00e1l es la diferencia entre una v\u00e1lvula PN20 y una PN 25?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La principal diferencia entre las clasificaciones de v\u00e1lvulas PN25 y PN 20 radica en <a href=\"https:\/\/www.desopipe.com\/es\/blog\/ppr-pipe\/ppr-pipe-wall-thickness-sdr-vs-pn\/\" target=\"_blank\" rel=\"noreferrer noopener\">espesor de pared<\/a> y grado espec\u00edfico de materias primas. Un PN20 <strong>v\u00e1lvula PPR<\/strong> Est\u00e1 dise\u00f1ado para una presi\u00f3n normal de 2,0 MPa (20 bar) a 20 \u00b0C. Por otro lado, una unidad con capacidad nominal de 25 bar est\u00e1 dise\u00f1ada para 2,5 MPa (25 bar).&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para aplicaciones solares, un PN 25<strong> <\/strong>Proporciona paredes estructurales m\u00e1s gruesas. Estas paredes resisten la deformaci\u00f3n lenta del pl\u00e1stico bajo calor y tensi\u00f3n constantes. Incluso cuando el sistema opera en los l\u00edmites t\u00e9rmicos m\u00e1s altos, <strong>v\u00e1lvula PPR de alta temperatura<\/strong> Mantiene la estanqueidad en las uniones de fusi\u00f3n. Esto se debe a la mayor densidad del material de la v\u00e1lvula.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A continuaci\u00f3n se muestra una tabla que describe las diferencias y aplicaciones:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Escenario de aplicaci\u00f3n<\/strong><\/td><td><strong>Factores de estr\u00e9s t\u00edpicos<\/strong><\/td><td><strong>Rendimiento de la v\u00e1lvula PPR PN20<\/strong><\/td><td><strong>Rendimiento de la v\u00e1lvula PPR PN25 (alta presi\u00f3n)<\/strong><\/td><\/tr><tr><td>Torres residenciales de gran altura<\/td><td>Presi\u00f3n est\u00e1tica de carga + Golpe de ariete (sobretensiones)<\/td><td>Opera cerca de los l\u00edmites estructurales; propenso a la fatiga por los golpes de arranque de la bomba.<\/td><td>Proporciona \u201cespacio libre\u201d mec\u00e1nico para absorber picos de presi\u00f3n sin tensi\u00f3n en la pared.<\/td><\/tr><tr><td>Estancamiento de la energ\u00eda solar comercial<\/td><td>Calor extremo (90 \u00b0C+) + Expansi\u00f3n del fluido<\/td><td>Se produce una \u201cdesclasificaci\u00f3n\u201d significativa; el material se ablanda y puede fallar bajo presi\u00f3n de vapor.<\/td><td>Mantiene una mayor capacidad de presi\u00f3n a temperaturas m\u00e1ximas debido a la mayor densidad de la pared.<\/td><\/tr><tr><td>Calentamiento de procesos industriales<\/td><td>Carga t\u00e9rmica constante (75 \u00b0C+) + funcionamiento 24\/7<\/td><td>Susceptible a ruptura por fluencia; las mol\u00e9culas se \u201cestiran\u201d con el tiempo, lo que produce fugas.<\/td><td>La SDR (relaci\u00f3n de dimensi\u00f3n est\u00e1ndar) m\u00e1s gruesa resiste la deformaci\u00f3n molecular para lograr una estabilidad a largo plazo.<\/td><\/tr><tr><td>Estaciones de bombeo de calefacci\u00f3n urbana<\/td><td>Vibraci\u00f3n mec\u00e1nica de alta frecuencia<\/td><td>Las paredes m\u00e1s delgadas pueden provocar deformaciones en el asiento y fugas internas.<\/td><td>La carrocer\u00eda reforzada act\u00faa como amortiguador de vibraciones, manteniendo una perfecta alineaci\u00f3n interna.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Failure_Risks_of_Under-Specification\"><\/span>Riesgos de falla por subespecificaciones<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Al seleccionar v\u00e1lvulas para un circuito solar de alta presi\u00f3n, elija la v\u00e1lvula recomendada con la clasificaci\u00f3n PN correcta. El uso de una v\u00e1lvula de menor clasificaci\u00f3n conlleva varios riesgos industriales, como:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ruptura por fluencia:<\/strong> Aparecer\u00e1n grietas microsc\u00f3picas en las v\u00e1lvulas, lo que reducir\u00e1 la vida \u00fatil del material. Esto se debe a la exposici\u00f3n prolongada a altas temperaturas.&nbsp;<\/li>\n\n\n\n<li><strong>Debilidad articular:<\/strong> La exposici\u00f3n prolongada al calor tambi\u00e9n provoca expansi\u00f3n t\u00e9rmica. Cuando este ciclo se repite, se genera una enorme tensi\u00f3n en la uni\u00f3n por fusi\u00f3n entre la tuber\u00eda y el... <strong>V\u00e1lvula de calefacci\u00f3n PPR.&nbsp;<\/strong><\/li>\n\n\n\n<li><strong>Tiempo de inactividad del sistema: <\/strong>La p\u00e9rdida de fluido y los da\u00f1os en el colector suelen deberse a v\u00e1lvulas con especificaciones insuficientes. Estos suelen ser los puntos de falla m\u00e1s comunes.&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Los ingenieros pueden proporcionar un margen de seguridad para estos problemas comunes en la industria. Especificaci\u00f3n de una v\u00e1lvula de 25 bar<strong> <\/strong>garantiza que el sistema sobreviva m\u00e1s de 25 a\u00f1os de servicio.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Selecting_Valves_for_Long-Term_Stability\"><\/span>Selecci\u00f3n de v\u00e1lvulas para estabilidad a largo plazo<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Los ingenieros deben verificar el cumplimiento de normas internacionales como DIN 8077\/8078 o ISO 15874. Este es un requisito estricto al elegir un <strong>V\u00e1lvula de calefacci\u00f3n PPR.<\/strong> Estas normas definen las especificaciones requeridas como dimensiones y pruebas de presi\u00f3n.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>v\u00e1lvula PPR de alta temperatura<\/strong> debe manejar lo espec\u00edfico <a href=\"https:\/\/www.desopipe.com\/es\/blog\/ppr-pipe\/ppr-pipe-sizes-and-specifications-guide-for-buyer\/\" target=\"_blank\" rel=\"noreferrer noopener\">DEG (Relaci\u00f3n de dimensi\u00f3n est\u00e1ndar)<\/a> del sistema de tuber\u00edas. Un establo <strong>v\u00e1lvula PPR<\/strong> Tambi\u00e9n debe incluir insertos de aleaci\u00f3n de lat\u00f3n CW617N para conexiones roscadas. Esto previene la corrosi\u00f3n galv\u00e1nica y garantiza un ajuste mec\u00e1nico seguro con colectores met\u00e1licos.&nbsp;<\/p>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  \n  <title>Producto destacado de Hero<\/title>\n  <style>\n    .hero-card {\n      display: flex;\n      flex-wrap: wrap;\n      align-items: center;\n      background: #f7f8fa;\n      border-radius: 16px;\n      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);\n      padding: 24px;\n      max-width: 900px;\n      margin: 40px auto;\n      font-family: Arial, sans-serif;\n      text-decoration: none;\n      color: inherit;\n font-family: 'Poppins';\n    }\n\n    .hero-image {\n      width: 220px;\n      height: auto;\n      border-radius: 12px;\n      object-fit: cover;\n      flex-shrink: 0;\n    }\n\n    .hero-content {\n      padding-left: 24px;\n      flex: 1;\n      min-width: 260px;\n    }\n\n    .hero-title {\n      font-size: 1.6rem;\n      font-weight: bold;\n      margin-bottom: 12px;\n      color: #222;\n      font-family: 'Poppins',\n    }\n\n    .hero-description {\n      font-size: 1rem;\n      color: #555;\n      margin-bottom: 18px;\n    }\n\n    .hero-link {\n      display: inline-block;\n      padding: 10px 20px;\n      background-color: #0066cc;\n      color: #fff;\n      text-decoration: none;\n      border-radius: 8px;\n      font-weight: bold;\n      transition: background 0.2s ease-in-out;\n    }\n\n    .hero-link:hover {\n      background-color: #004c99;\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<\/head>\n<body>\n\n<a class=\"hero-card\" href=\"https:\/\/www.desopipe.com\/es\/product\/plastic-ball-valve-with-brass-core-ii\/\" target=\"_blank\">\n  <img decoding=\"async\" class=\"hero-image\" src=\"https:\/\/www.desopipe.com\/wp-content\/uploads\/2025\/03\/Plastic-ball-valve-with-brass-core-II.jpg\" alt=\"\">\n  <div class=\"hero-content\">\n    <div class=\"hero-title\">V\u00e1lvula de bola de pl\u00e1stico con n\u00facleo de lat\u00f3n II<\/div>\n    <div class=\"hero-description\">\nRango de tama\u00f1o: DN20\u2013DN32 (20 mm\u201363 mm).<br>\n\nClasificaci\u00f3n de presi\u00f3n: PN25 (hasta 2,5 MPa).\n\n <\/div>\n    <span class=\"hero-link\">Ver producto<\/span>\n  <\/div>\n<\/a>\n\n<\/body>\n<\/html>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DESO_High-Pressure_Valve_Solutions\"><\/span>Soluciones de v\u00e1lvulas de alta presi\u00f3n DESO<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DESO, uno de los fabricantes de tuber\u00edas PPR, se especializa en la fabricaci\u00f3n de tuber\u00edas reforzadas. <strong>V\u00e1lvula PN 25<\/strong> unidades. Nuestras <strong>v\u00e1lvula PPR de alta temperatura<\/strong> La l\u00ednea est\u00e1 dise\u00f1ada espec\u00edficamente para aplicaciones termosolares. Utilizan 100% Borealis o Hyosung. <a href=\"https:\/\/www.desopipe.com\/es\/blog\/manufacturer\/buyers-guide-to-high-quality-ppr-pipe-material\/\" target=\"_blank\" rel=\"noreferrer noopener\">materias primas<\/a> para garantizar la estabilidad qu\u00edmica.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El <strong>V\u00e1lvula de calefacci\u00f3n PPR<\/strong> Se prueba a 95 \u00b0C durante 1000 horas. Esto verifica su resistencia a la degradaci\u00f3n t\u00e9rmica seg\u00fan la norma ISO 15874, cl\u00e1usula 11.2 (o similar). Los contratistas buscan proporcionar a sus clientes residenciales o comerciales un sistema con capacidad de operaci\u00f3n a 25 bar. Al cumplir con estos requisitos, se eliminan las devoluciones y las reparaciones.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusi\u00f3n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Eligiendo una <strong>V\u00e1lvula PN 25<\/strong> Es una medida proactiva para garantizar la seguridad y la eficiencia de un sistema de calefacci\u00f3n solar. Los ingenieros deben especificar las v\u00e1lvulas adecuadas seg\u00fan los requisitos del sistema de plomer\u00eda. Si bien un est\u00e1ndar... <strong>v\u00e1lvula PPR <\/strong>Aunque podr\u00eda ser suficiente para una plomer\u00eda est\u00e1ndar, las demandas t\u00e9rmicas de un sistema de calefacci\u00f3n solar requieren una v\u00e1lvula m\u00e1s duradera. Al instalar la v\u00e1lvula correcta... <strong>V\u00e1lvula de calefacci\u00f3n PPR, <\/strong>Puede estar seguro de la seguridad y eficiencia del sistema y de una vida \u00fatil certificada de 25 a\u00f1os.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/www.desopipe.com\/es\/contact\/\" style=\"background-color:#0588a7\" target=\"_blank\" rel=\"noreferrer noopener\">Obtenga una cotizaci\u00f3n gratis<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>In the modern plumbing industry, PPR systems are the standard material for hot and cold water plumbing. This standard must be backed by international compliance, including<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":4245,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[],"class_list":["post-4144","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ppr-valve"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PPR Valve PN25 for High-Pressure Solar Heating | DESO Group<\/title>\n<meta name=\"description\" content=\"Learn why a high temperature PPR valve is required for solar heating and why a PN 25 valve is required to ensure thermal stability, creep rupture resistance, and a 25-year system service life.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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