{"id":789,"date":"2026-10-02T13:17:43","date_gmt":"2026-10-02T11:17:43","guid":{"rendered":"https:\/\/www.valfonta.com\/producto\/valvula-exces-de-pressio-model-prv53\/"},"modified":"2026-10-22T09:24:10","modified_gmt":"2026-10-22T07:24:10","slug":"valvula-exces-de-pressio-model-prv53","status":"publish","type":"product","link":"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv53\/","title":{"rendered":"V\u00e0lvula d'exc\u00e9s de pressi\u00f3 PRV53"},"content":{"rendered":"<div class=\"wp-block-group vf-raiz vf-pl-ficha-producto is-layout-flow wp-block-group-is-layout-flow\"><nav class=\"wp-block-group vf-breadcrumbs vfa-aria-label--Ruta%20de%20navegaci%C3%B3 is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><a href=\"\/ca\/\">Inici<\/a><span class=\"vf-sep\" aria-hidden=\"true\">\u203a<\/span><a href=\"https:\/\/www.valfonta.com\/ca\/valvules-alleujament-de-pressio\/\">V\u00e0lvules d'alleujament de pressi\u00f3<\/a><span class=\"vf-sep\" aria-hidden=\"true\">\u203a<\/span><span aria-current=\"page\">V\u00e0lvula d'exc\u00e9s de pressi\u00f3 PRV53<\/span><\/p><\/nav><article class=\"wp-block-group vf-pdp vfd-model--PRV53 is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-pdp-hero is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-pdp-title is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-pdp-eyebrow wp-block-paragraph\">V\u00e0lvula d'exc\u00e9s de pressi\u00f3 \u00b7 Acci\u00f3 directa<\/p><h1 class=\"wp-block-heading\">V\u00e0lvula d'exc\u00e9s de pressi\u00f3 PRV53<\/h1><\/div><div class=\"wp-block-group vf-pdp-media is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><span class=\"vf-pdp-badge\">Inox 316L<\/span><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-PRV30-44-700x700-1.jpg\" alt=\"V\u00e0lvula d&#x27;exc\u00e9s de pressi\u00f3 PRV53 d&#x27;acer inoxidable 316L amb connexi\u00f3 roscada\" class=\"wp-image-181\" width=\"700\" height=\"700\" fetchpriority=\"high\"><\/p><\/div><div class=\"wp-block-group vf-pdp-body is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-lead wp-block-paragraph\">V\u00e0lvula autoregulada d'exc\u00e9s de pressi\u00f3, d'acci\u00f3 directa i equilibrada per pist\u00f3, amb cos, caputx\u00f3 i interiors d'acer inoxidable 316L. Mant\u00e9 estable la pressi\u00f3 de la l\u00ednia i descarrega l'exc\u00e9s quan se supera el tarat, en l\u00edquids, aire comprimit i gasos neutres fins a 150 \u00b0C.<\/p><ul class=\"vf-pdp-keys wp-block-list\"><li><span>Di\u00e0metres<\/span><b>DN15 a DN25<\/b><\/li><li><span>Pressi\u00f3 nominal<\/span><b>PN25<\/b><\/li><li><span>Rang de tarat<\/span><b>0,5 a 10 barg <small>15 sota consulta<\/small><\/b><\/li><li><span>Pressi\u00f3 d'entrada<\/span><b>fins a 10 barg <small>est\u00e0ndard<\/small><\/b><\/li><li><span>Temperatura<\/span><b>\u221230 a 150 \u00b0C <small>segons les juntes<\/small><\/b><\/li><li><span>Kv<\/span><b>2 a 3,5 m\u00b3\/h<\/b><\/li><\/ul><div class=\"wp-block-group vf-pdp-cta is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><a class=\"vf-btn vf-btn--pri\" href=\"#solicitar\">Sol\u00b7licitar oferta<\/a><a class=\"vf-btn vf-btn--sec\" href=\"\/wp-content\/uploads\/2026\/10\/PRV53-17-ESP.pdf\" target=\"_blank\" rel=\"noopener\">Descarregar la fitxa t\u00e8cnica <small>PDF<\/small><\/a><\/p><\/div><p class=\"vf-pdp-contact wp-block-paragraph\">T\u00e9 dubtes sobre el tarat o el dimensionament? Truqui al <a href=\"tel:+34933720888\">933 720 888<\/a> o escrigui a <a href=\"mailto:valfonta@valfonta.com\">valfonta@valfonta.com<\/a>.<\/p><\/div><\/div><ul class=\"vf-pdp-trust wp-block-list\"><li>Disseny i fabricaci\u00f3 pr\u00f2pies a Badalona<\/li><li>Marcatge ATEX II 2 GD per a zones 1 i 21<\/li><li>Instal\u00b7laci\u00f3 en qualsevol posici\u00f3<\/li><li>Kits de juntes i molla de recanvi<\/li><\/ul><nav class=\"wp-block-group vf-pdp-nav vfa-aria-label--Contingut%20de%20la%20fitxa is-layout-flow wp-block-group-is-layout-flow\"><ul class=\"wp-block-list\"><li><a href=\"#aplicaciones\">Aplicacions<\/a><\/li><li><a href=\"#especificaciones\">Especificacions<\/a><\/li><li><a href=\"#funcionamiento\">Funcionament<\/a><\/li><li><a href=\"#instalacion\">Instal\u00b7laci\u00f3<\/a><\/li><li><a href=\"#documentacion\">Documentaci\u00f3<\/a><\/li><li><a href=\"#comparar\">Comparar<\/a><\/li><li><a href=\"#preguntas\">Preguntes<\/a><\/li><li><a href=\"#solicitar\">Sol\u00b7licitar oferta<\/a><\/li><\/ul><\/nav><section id=\"aplicaciones\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-pdp-two is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Per a qu\u00e8 s'utilitza la PRV53<\/h2><p class=\"wp-block-paragraph\">La <strong>PRV53<\/strong> \u00e9s una <a href=\"https:\/\/www.valfonta.com\/ca\/valvules-alleujament-de-pressio\/\">v\u00e0lvula d'exc\u00e9s de pressi\u00f3<\/a> autoregulada: no necessita energia auxiliar ni l\u00ednia de pilotatge. Quan la pressi\u00f3 aig\u00fces amunt supera el valor de tarat, s'obre proporcionalment i alleuja l'exc\u00e9s, de manera que la pressi\u00f3 de la l\u00ednia principal es mant\u00e9 en el valor ajustat.<\/p><p class=\"wp-block-paragraph\">El muntatge t\u00edpic \u00e9s en <strong>bypass despr\u00e9s d'una bomba<\/strong>, amb retorn del cabal sobrant al dip\u00f2sit. El cos, el caputx\u00f3 i els interiors s\u00f3n d'<strong>acer inoxidable AISI 316L<\/strong>. M\u00e9s detall al nostre article sobre v\u00e0lvules d'exc\u00e9s de pressi\u00f3 autoreguladores.<\/p><ul class=\"vf-pdp-apps wp-block-list\"><li><b>Bypass de bombes<\/b><span>Alleujament de la impulsi\u00f3, amb retorn del cabal sobrant al dip\u00f2sit.<\/span><\/li><li><b>Laboratoris qu\u00edmics<\/b><span>Pressi\u00f3 estable en circuits de l\u00edquids i gasos.<\/span><\/li><li><b>Plantes sanit\u00e0ries<\/b><span>Circuits en qu\u00e8 es requereix acer inoxidable.<\/span><\/li><li><b>Aire comprimit<\/b><span>Limitaci\u00f3 de la pressi\u00f3 de la xarxa al valor ajustat.<\/span><\/li><li><b>Fuel-oil i nitrogen<\/b><span>Fluids dels grups 1 i 2, inclosos gasos neutres.<\/span><\/li><li><b>Servei amb oxigen<\/b><span>Sota comanda, la v\u00e0lvula se subministra completament desgreixada.<\/span><\/li><\/ul><\/div><aside class=\"wp-block-group vf-pdp-fit is-layout-flow wp-block-group-is-layout-flow\"><h3 class=\"wp-block-heading\">Tri\u00ef la PRV53 si\u2026<\/h3><ul class=\"vf-si wp-block-list\"><li>Treballa amb aigua, fuel-oil, aire comprimit, nitrogen o altres gasos neutres.<\/li><li>Necessita di\u00e0metres petits, de DN15 a DN25, i un tarat de 0,5 a 10 barg.<\/li><li>El cos i els interiors han de ser d'acer inoxidable 316L.<\/li><li>Busca una v\u00e0lvula senzilla, sense pilotatge, que es pugui muntar en qualsevol posici\u00f3.<\/li><\/ul><h3 class=\"wp-block-heading\">Millor un altre model si\u2026<\/h3><ul class=\"vf-no wp-block-list\"><li>El fluid \u00e9s vapor: vegi la <a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv54\/\">PRV54<\/a> (fins a 210 \u00b0C) o la <a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv55\/\">PRV55<\/a> (fins a 150 \u00b0C).<\/li><li>Necessita tarar per sota de 0,5 barg: la <a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv55\/\">PRV55<\/a> treballa des de 0,01 barg.<\/li><li>Necessita m\u00e9s de DN25: la <a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio\/\">S1<\/a> i la <a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-alleujament-de-pressio\/\">S3<\/a> arriben a DN150, i la <a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-reductora-de-pressio-s2\/\">S2<\/a>, a DN100.<\/li><li>Necessita tarats de fins a 20 barg o PN40: vegi la <a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-alleujament-de-pressio\/\">S3<\/a>.<\/li><\/ul><\/aside><\/div><\/section><section id=\"especificaciones\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Especificacions t\u00e8cniques de la PRV53<\/h2><div class=\"wp-block-group vf-tbl-wrap is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"wp-block-table vf-tbl\"><table><tbody><tr><th scope=\"row\">Tipus<\/th><td>V\u00e0lvula d'exc\u00e9s de pressi\u00f3 autoregulada, d'acci\u00f3 directa, equilibrada per pist\u00f3<\/td><\/tr><tr><th scope=\"row\">Di\u00e0metres<\/th><td>DN15 (\u00bd\u2033), DN20 (\u00be\u2033) i DN25 (1\u2033)<\/td><\/tr><tr><th scope=\"row\">Connexions<\/th><td>Rosca BSP o NPT \u00b7 Brides EN PN16\/25 \u00b7 Brides ANSI CL150<\/td><\/tr><tr><th scope=\"row\">Pressi\u00f3 nominal<\/th><td>PN25<\/td><\/tr><tr><th scope=\"row\">Pressi\u00f3 m\u00e0xima d'entrada<\/th><td>10 barg en execuci\u00f3 est\u00e0ndard (consulti altres rangs)<\/td><\/tr><tr><th scope=\"row\">Rangs de tarat<\/th><td>0,5 \u2013 3 barg \u00b7 1 \u2013 6 barg \u00b7 3 \u2013 10 barg (segons la molla). 5 \u2013 15 barg sota consulta<\/td><\/tr><tr><th scope=\"row\">Coeficient Kv<\/th><td>2 m\u00b3\/h (DN15) \u00b7 2,5 m\u00b3\/h (DN20) \u00b7 3,5 m\u00b3\/h (DN25). Kv redu\u00eft sota comanda<\/td><\/tr><tr><th scope=\"row\">Temperatura segons les juntes<\/th><td>NBR: \u221220 a +80 \u00b0C \u00b7 EPDM: \u221230 a +125 \u00b0C \u00b7 Viton: \u221210 a +150 \u00b0C<\/td><\/tr><tr><th scope=\"row\">Fluids<\/th><td>L\u00edquids i gasos dels grups 1 i 2: aigua, fuel-oil, aire comprimit, nitrogen, gasos neutres<\/td><\/tr><tr><th scope=\"row\">Materials<\/th><td>Cos i caputx\u00f3 en acer inoxidable A351 CF3M (AISI 316L). Interiors en AISI 316L. Obturador en NBR de s\u00e8rie (EPDM, PTFE+GR o FKM)<\/td><\/tr><tr><th scope=\"row\">Posici\u00f3 de muntatge<\/th><td>Qualsevol posici\u00f3, respectant la fletxa de sentit del flux del cos<\/td><\/tr><tr><th scope=\"row\">Directiva d'equips a pressi\u00f3<\/th><td>PED 2014\/68\/UE, article 4.3: no requereix marcatge CE (fluids dels grups 1 i 2)<\/td><\/tr><tr><th scope=\"row\">ATEX<\/th><td>II 2 GD c IIC Tx \/ c IIIC Tx\u00baC \u00b7 certificat LOM 14.034 U<\/td><\/tr><tr><th scope=\"row\">Sota comanda<\/th><td>Cos i caputx\u00f3 en bronze o superd\u00faplex \u00b7 extrems per soldar (socket weld o butt weld) \u00b7 connexi\u00f3 clamp \u00b7 desgreixatge per a oxigen \u00b7 juntes especials<\/td><\/tr><\/tbody><\/table><\/figure><\/div><h3 class=\"wp-block-heading\">Dimensions i pes<\/h3><div class=\"wp-block-group vf-tbl-wrap is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"wp-block-table vf-tbl vf-tbl--grid\"><table><thead><tr><th scope=\"col\"><\/th><th scope=\"col\">\u00bd\u2033 rosca<\/th><th scope=\"col\">\u00be\u2033 rosca<\/th><th scope=\"col\">1\u2033 rosca<\/th><th scope=\"col\">DN15 EN<\/th><th scope=\"col\">DN20 EN<\/th><th scope=\"col\">DN25 EN<\/th><th scope=\"col\">DN15 ANSI<\/th><th scope=\"col\">DN20 ANSI<\/th><th scope=\"col\">DN25 ANSI<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">Kv (m\u00b3\/h)<\/th><td>2<\/td><td>2,5<\/td><td>3,5<\/td><td>2<\/td><td>2,5<\/td><td>3,5<\/td><td>2<\/td><td>2,5<\/td><td>3,5<\/td><\/tr><tr><th scope=\"row\">Longitud A \/ AA<\/th><td>108<\/td><td>108<\/td><td>108<\/td><td>130<\/td><td>150<\/td><td>160<\/td><td>184<\/td><td>184<\/td><td>184<\/td><\/tr><tr><th scope=\"row\">Al\u00e7ada H1<\/th><td>135<\/td><td>135<\/td><td>135<\/td><td>135<\/td><td>135<\/td><td>135<\/td><td>135<\/td><td>135<\/td><td>135<\/td><\/tr><tr><th scope=\"row\">Al\u00e7ada H2<\/th><td>185<\/td><td>185<\/td><td>185<\/td><td>185<\/td><td>185<\/td><td>185<\/td><td>185<\/td><td>185<\/td><td>185<\/td><\/tr><tr><th scope=\"row\">\u00d8 brida D1<\/th><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><td>95<\/td><td>105<\/td><td>115<\/td><td>89<\/td><td>98<\/td><td>108<\/td><\/tr><tr><th scope=\"row\">Pes (kg)<\/th><td>2,5<\/td><td>2,5<\/td><td>2,5<\/td><td>5<\/td><td>5<\/td><td>5<\/td><td>5<\/td><td>5<\/td><td>5<\/td><\/tr><\/tbody><\/table><\/figure><\/div><p class=\"vf-note wp-block-paragraph\">Mides en mil\u00b7l\u00edmetres. Els pl\u00e0nols acotats i la resta de cotes de brida s\u00f3n a la fitxa t\u00e8cnica en PDF.<\/p><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Especejament i materials (20 peces)<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-tbl-wrap is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"wp-block-table vf-tbl vf-tbl--grid\"><table><thead><tr><th scope=\"col\">N\u00fam.<\/th><th scope=\"col\">Pe\u00e7a<\/th><th scope=\"col\">Material<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">1<\/th><td>Cos<\/td><td>Acer inox. A351 CF3M<\/td><\/tr><tr><th scope=\"row\">2<\/th><td>Cargol de tancament<\/td><td>Acer inox. A2-70<\/td><\/tr><tr><th scope=\"row\">3<\/th><td>Obturador<\/td><td>NBR (EPDM, PTFE+GR, FKM)<\/td><\/tr><tr><th scope=\"row\">5<\/th><td>Seient<\/td><td>Acer inox. AISI 316L<\/td><\/tr><tr><th scope=\"row\">6<\/th><td>Junta del cos<\/td><td>PTFE<\/td><\/tr><tr><th scope=\"row\">7<\/th><td>Caputx\u00f3<\/td><td>Acer inox. A351 CF3M<\/td><\/tr><tr><th scope=\"row\">8<\/th><td>Volandera de la molla<\/td><td>Acer galvanitzat ST-52<\/td><\/tr><tr><th scope=\"row\">9<\/th><td>Cargol de regulaci\u00f3<\/td><td>Acer inoxidable<\/td><\/tr><tr><th scope=\"row\">10<\/th><td>Molla de regulaci\u00f3<\/td><td>Acer 52SiCrNi5 amb pintura epoxi (60\u2013100 micres)<\/td><\/tr><tr><th scope=\"row\">11<\/th><td>Pist\u00f3<\/td><td>Acer inox. AISI 316L<\/td><\/tr><tr><th scope=\"row\">12<\/th><td>Junta t\u00f2rica<\/td><td>NBR (EPDM, FKM)<\/td><\/tr><tr><th scope=\"row\">13<\/th><td>Junta de l'\u00e8mbol<\/td><td>NBR (EPDM, FKM)<\/td><\/tr><tr><th scope=\"row\">14<\/th><td>Cargols (x4)<\/td><td>Acer inox. A2-70<\/td><\/tr><tr><th scope=\"row\">15<\/th><td>Junta t\u00f2rica<\/td><td>Igual que la 12<\/td><\/tr><tr><th scope=\"row\">16<\/th><td>Junta t\u00f2rica<\/td><td>NBR (EPDM, FKM)<\/td><\/tr><tr><th scope=\"row\">17<\/th><td>Eix<\/td><td>Acer inox. AISI 316L<\/td><\/tr><tr><th scope=\"row\">18<\/th><td>Guia del tancament<\/td><td>Acer inox. AISI 316L<\/td><\/tr><tr><th scope=\"row\">20<\/th><td>Guia del casquet<\/td><td>Acer inox. AISI 316L<\/td><\/tr><tr><th scope=\"row\">21<\/th><td>Tapa inferior<\/td><td>Acer inox. AISI 316L<\/td><\/tr><tr><th scope=\"row\">22<\/th><td>Junta t\u00f2rica<\/td><td>NBR (EPDM, FKM)<\/td><\/tr><\/tbody><\/table><\/figure><\/div><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Recanvis recomanats<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-tbl-wrap is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"wp-block-table vf-tbl vf-tbl--grid\"><table><thead><tr><th scope=\"col\">Refer\u00e8ncia<\/th><th scope=\"col\">Descripci\u00f3<\/th><th scope=\"col\">Peces<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">PRV53.SP1<\/th><td>Kit de juntes NBR (80 \u00b0C)<\/td><td>3, 6, 12, 13, 15, 16 i 22<\/td><\/tr><tr><th scope=\"row\">PRV53.SP2<\/th><td>Kit de juntes EPDM (125 \u00b0C)<\/td><td>3, 6, 12, 13, 15, 16 i 22<\/td><\/tr><tr><th scope=\"row\">PRV53.SP3<\/th><td>Kit de juntes FKM (150 \u00b0C)<\/td><td>3, 6, 12, 13, 15, 16 i 22<\/td><\/tr><tr><th scope=\"row\">PRV53.SP5<\/th><td>Molla de regulaci\u00f3<\/td><td>10<\/td><\/tr><\/tbody><\/table><\/figure><\/div><\/div><\/details><\/section><section id=\"funcionamiento\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Com funciona la PRV53<\/h2><p class=\"wp-block-paragraph\">La PRV53 treballa per equilibri entre la molla de regulaci\u00f3 i la pressi\u00f3 d'entrada, que actua sobre el pist\u00f3. No necessita aire ni electricitat.<\/p><ol class=\"vf-steps wp-block-list\"><li><b>Tancada sense pressi\u00f3.<\/b> Mentre la pressi\u00f3 d'entrada no arriba al tarat, la molla de regulaci\u00f3 mant\u00e9 la v\u00e0lvula tancada.<\/li><li><b>Presa interna.<\/b> La pressi\u00f3 aig\u00fces amunt arriba al pist\u00f3 a trav\u00e9s de l'eix, sense l\u00ednia de control exterior.<\/li><li><b>Obertura proporcional.<\/b> Quan la pressi\u00f3 d'entrada supera el valor de consigna, l'obturador es despla\u00e7a i la v\u00e0lvula s'obre en proporci\u00f3 a l'exc\u00e9s de pressi\u00f3.<\/li><li><b>Alleujament.<\/b> En descarregar el cabal sobrant, la pressi\u00f3 de la l\u00ednia es mant\u00e9 en el valor ajustat. Si baixa, la molla torna a tancar la v\u00e0lvula.<\/li><\/ol><\/section><section id=\"instalacion\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Instal\u00b7laci\u00f3 de la PRV53<\/h2><p class=\"wp-block-paragraph\">La instal\u00b7laci\u00f3 t\u00edpica de la PRV53 \u00e9s en una derivaci\u00f3 despr\u00e9s de la bomba, amb desc\u00e0rrega del cabal sobrant al dip\u00f2sit.<\/p><div class=\"wp-block-group vf-diagram vf-s-7307c0 vf-t-figure is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-svgw is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><svg viewbox=\"0 0 900 240\" role=\"img\" aria-label=\"Esquema d'instal\u00b7laci\u00f3 d'una v\u00e0lvula d'alleujament o d'exc\u00e9s de pressi\u00f3 en derivaci\u00f3\"><path d=\"M20 90 H880\" stroke=\"#9aa0a6\" stroke-width=\"6\" fill=\"none\"><\/path><path d=\"M865 90 l14 0 -10 -7 m10 7 -10 7\" stroke=\"#1e2123\" stroke-width=\"3\" fill=\"none\"><\/path><rect x=\"60\" y=\"62\" width=\"90\" height=\"56\" rx=\"4\" fill=\"#fff\" stroke=\"#1e2123\" stroke-width=\"2\"><\/rect><circle cx=\"105\" cy=\"90\" r=\"16\" fill=\"none\" stroke=\"#1e2123\" stroke-width=\"2\"><\/circle><path d=\"M97 90 l18 0\" stroke=\"#1e2123\" stroke-width=\"2\"><\/path><path d=\"M420 90 V150\" stroke=\"#9aa0a6\" stroke-width=\"5\"><\/path><rect x=\"385\" y=\"150\" width=\"70\" height=\"46\" rx=\"4\" fill=\"#fdecf1\" stroke=\"#e6305d\" stroke-width=\"2\"><\/rect><path d=\"M420 160 v24 m-7 -8 7 8 7 -8\" stroke=\"#e6305d\" stroke-width=\"2.5\" fill=\"none\"><\/path><path d=\"M455 173 H640 V215\" stroke=\"#9aa0a6\" stroke-width=\"5\" fill=\"none\"><\/path><path d=\"M632 205 l8 12 8 -12\" stroke=\"#1e2123\" stroke-width=\"2.5\" fill=\"none\"><\/path><g><circle cx=\"300\" cy=\"51\" r=\"13\" fill=\"#fff\" stroke=\"#1e2123\" stroke-width=\"2\"><\/circle><line x1=\"300\" y1=\"64\" x2=\"300\" y2=\"90\" stroke=\"#1e2123\" stroke-width=\"2\"><\/line><line x1=\"300\" y1=\"51\" x2=\"307\" y2=\"44\" stroke=\"#e6305d\" stroke-width=\"2\"><\/line><\/g><rect x=\"720\" y=\"65\" width=\"110\" height=\"50\" rx=\"4\" fill=\"#fff\" stroke=\"#1e2123\" stroke-width=\"2\"><\/rect><circle cx=\"105\" cy=\"138\" r=\"11\" fill=\"#1e2123\"><\/circle><text x=\"105\" y=\"142\" font-size=\"12\" font-weight=\"700\" fill=\"#fff\" text-anchor=\"middle\" font-family=\"Montserrat,Arial\">1<\/text><circle cx=\"324\" cy=\"38\" r=\"11\" fill=\"#1e2123\"><\/circle><text x=\"324\" y=\"42\" font-size=\"12\" font-weight=\"700\" fill=\"#fff\" text-anchor=\"middle\" font-family=\"Montserrat,Arial\">2<\/text><circle cx=\"420\" cy=\"218\" r=\"11\" fill=\"#e6305d\"><\/circle><text x=\"420\" y=\"222\" font-size=\"12\" font-weight=\"700\" fill=\"#fff\" text-anchor=\"middle\" font-family=\"Montserrat,Arial\">3<\/text><circle cx=\"640\" cy=\"232\" r=\"11\" fill=\"#1e2123\"><\/circle><text x=\"640\" y=\"236\" font-size=\"12\" font-weight=\"700\" fill=\"#fff\" text-anchor=\"middle\" font-family=\"Montserrat,Arial\">4<\/text><circle cx=\"775\" cy=\"136\" r=\"11\" fill=\"#1e2123\"><\/circle><text x=\"775\" y=\"140\" font-size=\"12\" font-weight=\"700\" fill=\"#fff\" text-anchor=\"middle\" font-family=\"Montserrat,Arial\">5<\/text><\/svg><\/p><\/div><div class=\"wp-block-group vf-t-figcaption is-layout-flow wp-block-group-is-layout-flow\"><ol class=\"wp-block-list\"><li>Bomba o equip que genera la pressi\u00f3<\/li><li>Man\u00f2metre d'entrada<\/li><li>V\u00e0lvula d'exc\u00e9s de pressi\u00f3 PRV53, en derivaci\u00f3<\/li><li>Desc\u00e0rrega del cabal sobrant al dip\u00f2sit<\/li><li>Consum o equip protegit<\/li><\/ol><\/div><\/div><h3 class=\"wp-block-heading\">Muntatge i posada en marxa<\/h3><ol class=\"vf-steps wp-block-list\"><li><b>Netegi la canonada<\/b> abans de muntar la v\u00e0lvula: qualsevol part\u00edcula pot danyar el tancament.<\/li><li><b>Instal\u00b7li un filtre colador<\/b> davant de la v\u00e0lvula per protegir el tancament.<\/li><li><b>Respecti la fletxa del cos.<\/b> La v\u00e0lvula es pot muntar en qualsevol posici\u00f3.<\/li><li><b>Munti la derivaci\u00f3 amb les seves v\u00e0lvules d'interrupci\u00f3<\/b>, empalmada a la canonada principal despr\u00e9s de la bomba.<\/li><li><b>Deixi entre 0,5 i 1 m<\/b> com a m\u00ednim entre la PRV53 i la v\u00e0lvula d'interrupci\u00f3 per aconseguir una regulaci\u00f3 millor.<\/li><li><b>Posi en marxa a poc a poc:<\/b> obri lentament les v\u00e0lvules d'interrupci\u00f3 per evitar cops d'ariet.<\/li><li><b>Ajusti la pressi\u00f3 de tarat<\/b> amb una clau Allen de 8 mm al cargol de regulaci\u00f3. En comprimir la molla augmenta la pressi\u00f3 de tarat; en descomprimir-la, disminueix. Comprovi el valor al man\u00f2metre d'entrada.<\/li><\/ol><p class=\"wp-block-paragraph\">La v\u00e0lvula l'ha d'instal\u00b7lar personal qualificat, sense superar mai la pressi\u00f3 i la temperatura de servei per a les quals s'ha dimensionat. En zones ATEX cal assegurar l'equipotencialitat de la v\u00e0lvula amb la instal\u00b7laci\u00f3. Vegi tamb\u00e9 com evitar el cop d'ariet en canonades.<\/p><\/section><section id=\"documentacion\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Documentaci\u00f3 t\u00e8cnica de la PRV53<\/h2><div class=\"wp-block-group vf-docs is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-doc vf-amb-enllac is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><i>PDF<\/i><\/p><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><b>Fitxa t\u00e8cnica PRV53<\/b><span>PDF \u00b7 3 p\u00e0gines \u00b7 caracter\u00edstiques, especejament, recanvis i dimensions<\/span><\/p><\/div><p class=\"vf-enllac wp-block-paragraph\"><a class=\"vf-enllac-estirat\" href=\"\/wp-content\/uploads\/2026\/10\/PRV53-17-ESP.pdf\" aria-label=\"PDF Fitxa t\u00e8cnica PRV53 PDF \u00b7 3 p\u00e0gines \u00b7 caracter\u00edstiques, especejament, recanvis i dimensions\" target=\"_blank\" rel=\"noopener\"><\/a><\/p><\/div><div class=\"wp-block-group vf-doc vf-amb-enllac is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><i>PDF<\/i><\/p><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><b>Manual de funcionament i instal\u00b7laci\u00f3<\/b><span>PDF \u00b7 11 p\u00e0gines \u00b7 muntatge, ATEX, manteniment i recepci\u00f3<\/span><\/p><\/div><p class=\"vf-enllac wp-block-paragraph\"><a class=\"vf-enllac-estirat\" href=\"\/wp-content\/uploads\/2026\/10\/Manual-PRV53-17-ESP.pdf\" aria-label=\"PDF Manual de funcionament i instal\u00b7laci\u00f3 PDF \u00b7 11 p\u00e0gines \u00b7 muntatge, ATEX, manteniment i recepci\u00f3\" target=\"_blank\" rel=\"noopener\"><\/a><\/p><\/div><\/div><p class=\"wp-block-paragraph\">Necessita el certificat d'una comanda o la documentaci\u00f3 ATEX? Consulti els nostres <a href=\"https:\/\/www.valfonta.com\/ca\/certificats\/\">certificats de qualitat<\/a> o demani'l al nostre equip t\u00e8cnic.<\/p><\/section><section id=\"comparar\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">La PRV53 comparada amb altres v\u00e0lvules d'exc\u00e9s de pressi\u00f3<\/h2><p class=\"wp-block-paragraph\">La gamma cobreix des de DN15 fins a DN150 i tarats de 0,01 a 20 barg. Comprovi si la PRV53 \u00e9s el model adequat o si li conv\u00e9 un altre.<\/p><div class=\"wp-block-group vf-tbl-wrap is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"wp-block-table vf-tbl vf-tbl--grid\"><table><thead><tr><th scope=\"col\">Model<\/th><th scope=\"col\">DN<\/th><th scope=\"col\">PN<\/th><th scope=\"col\">Tarat (barg)<\/th><th scope=\"col\">T. m\u00e0x. (\u00b0C)<\/th><th scope=\"col\">Vapor<\/th><th scope=\"col\">Cos<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\"><span class=\"vf-dato vf-dato-fila\" hidden data-vf-class=\"vf-cur\"><\/span>PRV53<\/th><td>15 \u2013 25<\/td><td>25<\/td><td>0,5 \u2013 15<\/td><td>150<\/td><td>No<\/td><td>Inox CF3M<\/td><\/tr><tr><th scope=\"row\"><a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv54\/\">PRV54<\/a><\/th><td>15 \u2013 25<\/td><td>25<\/td><td>0,5 \u2013 12<\/td><td>210<\/td><td>S\u00ed<\/td><td>Inox CF3M<\/td><\/tr><tr><th scope=\"row\"><a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv55\/\">PRV55<\/a><\/th><td>15 \u2013 25<\/td><td>25<\/td><td>0,01 \u2013 8<\/td><td>150<\/td><td>S\u00ed<\/td><td>Inox CF3M<\/td><\/tr><tr><th scope=\"row\"><a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio\/\">S1<\/a><\/th><td>15 \u2013 150<\/td><td>40<\/td><td>0,5 \u2013 15<\/td><td>220<\/td><td>S\u00ed<\/td><td>Acer WCB o inox CF3M<\/td><\/tr><tr><th scope=\"row\"><a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-reductora-de-pressio-s2\/\">S2<\/a><\/th><td>15 \u2013 100<\/td><td>40<\/td><td>0,02 \u2013 10<\/td><td>180<\/td><td>S\u00ed<\/td><td>Acer WCB o inox CF3M<\/td><\/tr><tr><th scope=\"row\"><a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-alleujament-de-pressio\/\">S3<\/a><\/th><td>15 \u2013 150<\/td><td>40<\/td><td>0,5 \u2013 20<\/td><td>220<\/td><td>S\u00ed<\/td><td>Acer WCB o inox CF3M<\/td><\/tr><tr><th scope=\"row\">S4<\/th><td>15 \u2013 100<\/td><td>40<\/td><td>0,5 \u2013 20<\/td><td>220<\/td><td>S\u00ed<\/td><td>Acer WCB o inox CF3M<\/td><\/tr><\/tbody><\/table><\/figure><\/div><p class=\"vf-note wp-block-paragraph\">Dades del cat\u00e0leg resum de v\u00e0lvules d'exc\u00e9s de pressi\u00f3 de Valfonta (2025), excepte el tarat de la S2, que procedeix de la seva fitxa t\u00e8cnica. Tots els models admeten l\u00edquids, oli, aire i gasos no inflamables. Si dubta entre una v\u00e0lvula d'exc\u00e9s i una de seguretat, llegeixi la difer\u00e8ncia entre v\u00e0lvula de seguretat i d'alleujament.<\/p><\/section><section id=\"preguntas\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Preguntes freq\u00fcents sobre la PRV53<\/h2><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Es pot fer servir la PRV53 amb vapor?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">No. La PRV53 est\u00e0 pensada per a l\u00edquids i gasos neutres, fins a 150 \u00b0C amb juntes de Viton. Per a vapor, vegi la <a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv54\/\">PRV54<\/a> (fins a 210 \u00b0C) o la <a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv55\/\">PRV55<\/a> (fins a 150 \u00b0C).<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Quina pressi\u00f3 de tarat es pot ajustar?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">Dep\u00e8n de la molla: hi ha tres rangs est\u00e0ndard, de 0,5 a 3, d'1 a 6 i de 3 a 10 barg, i sota consulta un de 5 a 15 barg. La pressi\u00f3 m\u00e0xima d'entrada est\u00e0ndard \u00e9s de 10 barg.<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Com s&#x27;ajusta la pressi\u00f3 de tarat de la PRV53?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">Amb una clau Allen de 8 mm al cargol de regulaci\u00f3. En comprimir la molla augmenta la pressi\u00f3 a la qual s'obre la v\u00e0lvula i en descomprimir-la disminueix. Comprovi el valor al man\u00f2metre d'entrada i consulti la nostra guia sobre el tarat de v\u00e0lvules d'alleujament.<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Quin manteniment necessita?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">No necessita manteniment peri\u00f2dic, per\u00f2 conv\u00e9 revisar les juntes i les peces de desgast segons les condicions de servei. Es pot fer amb la v\u00e0lvula instal\u00b7lada, despressuritzada i a\u00efllada. Hi ha kits de juntes en NBR, EPDM i FKM (PRV53.SP1 a SP3) i la molla de regulaci\u00f3 (PRV53.SP5).<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>La PRV53 porta marcatge CE?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">No li cal. Pel seu di\u00e0metre (DN15 a DN25) i la seva pressi\u00f3 nominal (PN25), queda dins de l'article 4.3 de la Directiva d'equips a pressi\u00f3 2014\/68\/UE, amb fluids dels grups 1 i 2.<\/p><\/div><\/details><details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Es pot instal\u00b7lar en una zona ATEX?<\/summary><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><p class=\"wp-block-paragraph\">S\u00ed. La PRV53 t\u00e9 marcatge ATEX II 2 GD (certificat LOM 14.034 U) i es pot utilitzar en zones 1 i 2 (gasos, vapors i l\u00edquids inflamables) i 21 i 22 (pols combustible), segons la classe t\u00e8rmica que correspongui a la temperatura del fluid. Vegi el nostre article sobre v\u00e0lvules ATEX.<\/p><\/div><\/details><\/section><section id=\"relacionados\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Altres models de v\u00e0lvules d'exc\u00e9s de pressi\u00f3<\/h2><ul class=\"vf-rel wp-block-list\"><li><a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv54\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-PRV30-44-700x700-1.jpg\" alt=\"Exc\u00e9s de pressi\u00f3 PRV54\" class=\"wp-image-181\" width=\"300\" height=\"300\" loading=\"lazy\"><b>Exc\u00e9s de pressi\u00f3 PRV54<\/b><span>DN15\u201325 i PN25 com la PRV53, per\u00f2 apta per a vapor fins a 210 \u00b0C.<\/span><\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv55\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-PRV45-55-700x700-1.jpg\" alt=\"Exc\u00e9s de pressi\u00f3 PRV55\" class=\"wp-image-191\" width=\"300\" height=\"300\" loading=\"lazy\"><b>Exc\u00e9s de pressi\u00f3 PRV55<\/b><span>Amb membrana: tarat des de 0,01 barg i vapor fins a 150 \u00b0C.<\/span><\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-M1-S1-3D-700x700-1.jpg\" alt=\"Exc\u00e9s de pressi\u00f3 S1\" class=\"wp-image-192\" width=\"300\" height=\"300\" loading=\"lazy\"><b>Exc\u00e9s de pressi\u00f3 S1<\/b><span>De DN15 a DN150 i PN40, per a vapor fins a 220 \u00b0C.<\/span><\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-reductora-de-pressio-s2\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-M2-PROVISIONAL-700x700-1.jpg\" alt=\"Exc\u00e9s de pressi\u00f3 S2\" class=\"wp-image-193\" width=\"300\" height=\"300\" loading=\"lazy\"><b>Exc\u00e9s de pressi\u00f3 S2<\/b><span>De DN15 a DN100, PN40 i tarat des de 0,02 barg.<\/span><\/a><\/li><li><a href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-alleujament-de-pressio\/\"><img decoding=\"async\" src=\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/valvula-alivio-presion-s3-s4-perspectiva-400.webp\" alt=\"Alleujament de pressi\u00f3 S3\" class=\"wp-image-10230\" width=\"300\" height=\"300\" loading=\"lazy\"><b>Alleujament de pressi\u00f3 S3<\/b><span>De DN15 a DN150, PN40, tarat fins a 20 barg i 220 \u00b0C.<\/span><\/a><\/li><\/ul><\/section><section id=\"solicitar\" class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group vf-quote is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">Sol\u00b7liciti oferta de la PRV53<\/h2><p class=\"wp-block-paragraph\">Indiqui'ns les dades de la seva instal\u00b7laci\u00f3 i li recomanarem el di\u00e0metre, el rang de molla per a la seva pressi\u00f3 de tarat i les juntes adequades al fluid i a la temperatura.<\/p><ul class=\"wp-block-list\"><li>Fluid i temperatura de servei<\/li><li>Pressi\u00f3 de tarat i pressi\u00f3 normal de servei<\/li><li>Cabal que ha de descarregar la v\u00e0lvula<\/li><li>Tipus de connexi\u00f3 (rosca o brides)<\/li><\/ul><p class=\"vf-pdp-contact wp-block-paragraph\">Tamb\u00e9 pot trucar al <a href=\"tel:+34933720888\">933 720 888<\/a>.<\/p><\/div>\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f590-o1\" lang=\"ca\" dir=\"ltr\" data-wpcf7-id=\"590\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/ca\/wp-json\/wp\/v2\/product\/789#wpcf7-f590-o1\" method=\"post\" class=\"wpcf7-form init vf-form wpcf7-acceptance-as-validation\" aria-label=\"Formulari de contacte\" novalidate=\"novalidate\" data-status=\"init\" toolname=\"solicitar_oferta\" tooldescription=\"Demana a Valfonta una oferta dels models d&#039;aquesta p\u00e0gina (model, di\u00e0metre, fluid i pressions); respon una persona de l&#039;equip.\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"590\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.2.3\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"ca\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f590-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/><input type=\"hidden\" name=\"_vf_t\" value=\"1792703048.ce54439e1276436b\" \/>\n<\/fieldset>\n<input class=\"wpcf7-form-control wpcf7-hidden\" value=\"PRV53\" type=\"hidden\" name=\"modelo\" \/><label>Nom *<span class=\"wpcf7-form-control-wrap\" data-name=\"nombre\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" autocomplete=\"name\" aria-required=\"true\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"nombre\" \/><\/span><\/label><label>Empresa<span class=\"wpcf7-form-control-wrap\" data-name=\"empresa\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" autocomplete=\"organization\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"empresa\" \/><\/span><\/label><label>Correu electr\u00f2nic *<span class=\"wpcf7-form-control-wrap\" data-name=\"email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" autocomplete=\"email\" aria-required=\"true\" aria-invalid=\"false\" value=\"\" type=\"email\" name=\"email\" \/><\/span><\/label><label>Tel\u00e8fon<span class=\"wpcf7-form-control-wrap\" data-name=\"telefono\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-text wpcf7-validates-as-tel\" autocomplete=\"tel\" aria-invalid=\"false\" value=\"\" type=\"tel\" name=\"telefono\" \/><\/span><\/label><fieldset><legend>Dades de l'aplicaci\u00f3 (opcional)<\/legend><label>Di\u00e0metre<span class=\"wpcf7-form-control-wrap\" data-name=\"dn\"><select class=\"wpcf7-form-control wpcf7-select\" aria-invalid=\"false\" name=\"dn\"><option value=\"\">Seleccioni<\/option><option value=\"DN15 (\u00bd\u2033)\">DN15 (\u00bd\u2033)<\/option><option value=\"DN20 (\u00be\u2033)\">DN20 (\u00be\u2033)<\/option><option value=\"DN25 (1\u2033)\">DN25 (1\u2033)<\/option><option value=\"No ho s\u00e9\">No ho s\u00e9<\/option><\/select><\/span><\/label><label>Fluid<span class=\"wpcf7-form-control-wrap\" data-name=\"fluido\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" placeholder=\"aigua, aire, fuel-oil, nitrogen\u2026\" value=\"\" type=\"text\" name=\"fluido\" \/><\/span><\/label><label>Pressi\u00f3 de tarat (barg)<span class=\"wpcf7-form-control-wrap\" data-name=\"tarado\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"tarado\" \/><\/span><\/label><label>Pressi\u00f3 de servei (barg)<span class=\"wpcf7-form-control-wrap\" data-name=\"p_servicio\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"p_servicio\" \/><\/span><\/label><label>Cabal a descarregar<span class=\"wpcf7-form-control-wrap\" data-name=\"caudal\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" placeholder=\"p. ex. 2 m\u00b3\/h\" value=\"\" type=\"text\" name=\"caudal\" \/><\/span><\/label><label>Temperatura (\u00b0C)<span class=\"wpcf7-form-control-wrap\" data-name=\"temperatura\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"temperatura\" \/><\/span><\/label><\/fieldset><label class=\"vf-full\">Missatge<span class=\"wpcf7-form-control-wrap\" data-name=\"mensaje\"><textarea cols=\"40\" rows=\"4\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea\" aria-invalid=\"false\" name=\"mensaje\"><\/textarea><\/span><\/label><label class=\"vf-chk vf-full\"><span class=\"wpcf7-form-control-wrap\" data-name=\"privacidad\"><span class=\"wpcf7-form-control wpcf7-acceptance\"><span class=\"wpcf7-list-item\"><input type=\"checkbox\" name=\"privacidad\" value=\"1\" aria-invalid=\"false\" \/><\/span><\/span><\/span> <span>He llegit i accepto la <a href=\"\/ca\/politica-de-privacitat\/\">pol\u00edtica de privacitat<\/a> *<\/span><\/label><input class=\"wpcf7-form-control wpcf7-submit has-spinner vf-btn vf-btn--pri\" type=\"submit\" value=\"Enviar la sol\u00b7licitud\" \/><span class=\"vf-hp\" aria-hidden=\"true\"><label>Web <input type=\"text\" name=\"vf_web\" value=\"\" tabindex=\"-1\" autocomplete=\"off\" toolparamdescription=\"Campo de control: d\u00e9jalo vac\u00edo\"><\/label><\/span><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<\/form>\n<\/div>\n\n<\/div><\/section><div class=\"wp-block-group vf-pdp-bar is-layout-flow wp-block-group-is-layout-flow\"><p class=\"vf-envolt wp-block-paragraph\"><a class=\"vf-btn vf-btn--sec\" href=\"tel:+34933720888\">Trucar<\/a><a class=\"vf-btn vf-btn--pri\" href=\"#solicitar\">Sol\u00b7licitar oferta<\/a><\/p><\/div><\/article><\/div>","protected":false},"excerpt":{"rendered":"<p>Inici\u203aV\u00e0lvules d'alleujament de pressi\u00f3\u203aV\u00e0lvula d'exc\u00e9s de pressi\u00f3 PRV53 V\u00e0lvula d'exc\u00e9s de pressi\u00f3 \u00b7 Acci\u00f3 directa V\u00e0lvula d'exc\u00e9s de pressi\u00f3 PRV53 Inox 316L V\u00e0lvula autoregulada d'exc\u00e9s de pressi\u00f3, d'acci\u00f3 directa i equilibrada per pist\u00f3, amb cos, caputx\u00f3 i interiors d'acer inoxidable 316L. Mant\u00e9 estable la pressi\u00f3 de la l\u00ednia i descarrega l'exc\u00e9s quan se supera el ... <a title=\"V\u00e0lvula d&#039;exc\u00e9s de pressi\u00f3 PRV53\" class=\"read-more\" href=\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv53\/\" aria-label=\"M\u00e9s informaci\u00f3 sobre V\u00e0lvula d&#039;exc\u00e9s de pressi\u00f3 PRV53\">Llegiu m\u00e9s<\/a><\/p>\n","protected":false},"featured_media":181,"template":"","meta":{"_acf_changed":false,"_generate-full-width-content":"true","_generate-disable-headline":"true","rank_math_title":"V\u00e0lvula d'exc\u00e9s de pressi\u00f3 PRV53 en inox 316L | Valfonta","rank_math_description":"V\u00e0lvula d'exc\u00e9s de pressi\u00f3 PRV53 d'acci\u00f3 directa, en acer inoxidable 316L. DN15 a DN25, PN25, tarat de 0,5 a 10 barg i fins a 150 \u00b0C segons juntes.","rank_math_focus_keyword":"","vf_jsonld":"[{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.valfonta.com\/#organization\",\"name\":\"Valfonta\",\"legalName\":\"Val Fonta, S.L.\",\"taxID\":\"B59935718\",\"url\":\"https:\/\/www.valfonta.com\/ca\/\",\"logo\":{\"@type\":\"ImageObject\",\"url\":\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/valfonta-logo.webp\"},\"foundingDate\":\"1962\",\"email\":\"valfonta@valfonta.com\",\"telephone\":\"+34 933 720 888\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"C\/ Bronze 26, Pol. Ind. Les Guixeres\",\"postalCode\":\"08915\",\"addressLocality\":\"Badalona\",\"addressRegion\":\"Barcelona\",\"addressCountry\":\"ES\"},\"description\":\"Disseny, fabricaci\u00f3 i venda de v\u00e0lvules reductores de pressi\u00f3, v\u00e0lvules d'alleujament de pressi\u00f3 i v\u00e0lvules de control.\"},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.valfonta.com\/#website\",\"url\":\"https:\/\/www.valfonta.com\/ca\/\",\"name\":\"Valfonta\",\"publisher\":{\"@id\":\"https:\/\/www.valfonta.com\/#organization\"},\"inLanguage\":\"ca\"},{\"@type\":\"ItemPage\",\"@id\":\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv53\/#webpage\",\"url\":\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv53\/\",\"name\":\"V\u00e0lvula d'exc\u00e9s de pressi\u00f3 PRV53 en inox 316L | Valfonta\",\"description\":\"V\u00e0lvula d'exc\u00e9s de pressi\u00f3 PRV53 d'acci\u00f3 directa, en acer inoxidable 316L. DN15 a DN25, PN25, tarat de 0,5 a 10 barg i fins a 150 \u00b0C segons juntes.\",\"isPartOf\":{\"@id\":\"https:\/\/www.valfonta.com\/#website\"},\"about\":{\"@id\":\"https:\/\/www.valfonta.com\/#organization\"},\"inLanguage\":\"ca\",\"datePublished\":\"2020-02-05T11:48:09+02:00\",\"dateModified\":\"2026-04-30T16:45:58+02:00\",\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-PRV30-44-700x700-1.jpg\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv53\/#breadcrumb\"},\"mainEntity\":{\"@id\":\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv53\/#product\"}},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-PRV30-44-700x700-1.jpg\",\"url\":\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-PRV30-44-700x700-1.jpg\",\"width\":\"1000\",\"height\":\"1000\",\"caption\":\"V\u00e0lvula reductora de pressi\u00f3\",\"inLanguage\":\"ca\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv53\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Inici\",\"item\":\"https:\/\/www.valfonta.com\/ca\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"V\u00e0lvules d'alleujament de pressi\u00f3\",\"item\":\"https:\/\/www.valfonta.com\/ca\/valvules-alleujament-de-pressio\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"V\u00e0lvula d'exc\u00e9s de pressi\u00f3 PRV53\",\"item\":\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv53\/\"}]},{\"@type\":\"Product\",\"@id\":\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv53\/#product\",\"name\":\"V\u00e0lvula d'exc\u00e9s de pressi\u00f3 PRV53\",\"url\":\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv53\/\",\"description\":\"V\u00e0lvula autoregulada d'exc\u00e9s de pressi\u00f3, d'acci\u00f3 directa i equilibrada per pist\u00f3, amb cos, caputx\u00f3 i interiors d'acer inoxidable 316L. Mant\u00e9 estable la pressi\u00f3 de la l\u00ednia i descarrega l'exc\u00e9s quan se supera el tarat, en l\u00edquids, aire comprimit i gasos neutres fins a 150 \u00b0C.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Valfonta\"},\"manufacturer\":{\"@id\":\"https:\/\/www.valfonta.com\/#organization\"},\"model\":\"PRV53\",\"image\":\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/ok-PRV30-44-700x700-1.jpg\",\"material\":\"Acer inoxidable A351 CF3M (AISI 316L)\",\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Tipus\",\"value\":\"V\u00e0lvula d'exc\u00e9s de pressi\u00f3 autoregulada, d'acci\u00f3 directa, equilibrada per pist\u00f3\"},{\"@type\":\"PropertyValue\",\"name\":\"Di\u00e0metres\",\"value\":\"DN15 (\u00bd\u2033), DN20 (\u00be\u2033) i DN25 (1\u2033)\"},{\"@type\":\"PropertyValue\",\"name\":\"Connexions\",\"value\":\"Rosca BSP o NPT \u00b7 Brides EN PN16\/25 \u00b7 Brides ANSI CL150\"},{\"@type\":\"PropertyValue\",\"name\":\"Pressi\u00f3 nominal\",\"value\":\"PN25\"},{\"@type\":\"PropertyValue\",\"name\":\"Pressi\u00f3 m\u00e0xima d'entrada\",\"value\":\"10 barg en execuci\u00f3 est\u00e0ndard (consulti altres rangs)\"},{\"@type\":\"PropertyValue\",\"name\":\"Rangs de tarat\",\"value\":\"0,5 \u2013 3 barg \u00b7 1 \u2013 6 barg \u00b7 3 \u2013 10 barg (segons la molla). 5 \u2013 15 barg sota consulta\"},{\"@type\":\"PropertyValue\",\"name\":\"Coeficient Kv\",\"value\":\"2 m\u00b3\/h (DN15) \u00b7 2,5 m\u00b3\/h (DN20) \u00b7 3,5 m\u00b3\/h (DN25). Kv redu\u00eft sota comanda\"},{\"@type\":\"PropertyValue\",\"name\":\"Temperatura segons les juntes\",\"value\":\"NBR: \u221220 a +80 \u00b0C \u00b7 EPDM: \u221230 a +125 \u00b0C \u00b7 Viton: \u221210 a +150 \u00b0C\"},{\"@type\":\"PropertyValue\",\"name\":\"Fluids\",\"value\":\"L\u00edquids i gasos dels grups 1 i 2: aigua, fuel-oil, aire comprimit, nitrogen, gasos neutres\"},{\"@type\":\"PropertyValue\",\"name\":\"Materials\",\"value\":\"Cos i caputx\u00f3 en acer inoxidable A351 CF3M (AISI 316L). Interiors en AISI 316L. Obturador en NBR de s\u00e8rie (EPDM, PTFE+GR o FKM)\"},{\"@type\":\"PropertyValue\",\"name\":\"Posici\u00f3 de muntatge\",\"value\":\"Qualsevol posici\u00f3, respectant la fletxa de sentit del flux del cos\"},{\"@type\":\"PropertyValue\",\"name\":\"Directiva d'equips a pressi\u00f3\",\"value\":\"PED 2014\/68\/UE, article 4.3: no requereix marcatge CE (fluids dels grups 1 i 2)\"},{\"@type\":\"PropertyValue\",\"name\":\"ATEX\",\"value\":\"II 2 GD c IIC Tx \/ c IIIC Tx\u00baC \u00b7 certificat LOM 14.034 U\"},{\"@type\":\"PropertyValue\",\"name\":\"Sota comanda\",\"value\":\"Cos i caputx\u00f3 en bronze o superd\u00faplex \u00b7 extrems per soldar (socket weld o butt weld) \u00b7 connexi\u00f3 clamp \u00b7 desgreixatge per a oxigen \u00b7 juntes especials\"}],\"category\":\"V\u00e0lvules d'alleujament de pressi\u00f3\",\"subjectOf\":[{\"@type\":\"DigitalDocument\",\"name\":\"Fitxa t\u00e8cnica PRV53\",\"url\":\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/PRV53-17-ESP.pdf\",\"encodingFormat\":\"application\/pdf\"},{\"@type\":\"DigitalDocument\",\"name\":\"Manual de funcionament i instal\u00b7laci\u00f3\",\"url\":\"https:\/\/www.valfonta.com\/wp-content\/uploads\/2026\/10\/Manual-PRV53-17-ESP.pdf\",\"encodingFormat\":\"application\/pdf\"}]},{\"@type\":\"FAQPage\",\"@id\":\"https:\/\/www.valfonta.com\/ca\/producte\/valvula-exces-de-pressio-model-prv53\/#faq\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Es pot fer servir la PRV53 amb vapor?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. La PRV53 est\u00e0 pensada per a l\u00edquids i gasos neutres, fins a 150 \u00b0C amb juntes de Viton. Per a vapor, vegi la PRV54 (fins a 210 \u00b0C) o la PRV55 (fins a 150 \u00b0C).\"}},{\"@type\":\"Question\",\"name\":\"Quina pressi\u00f3 de tarat es pot ajustar?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Dep\u00e8n de la molla: hi ha tres rangs est\u00e0ndard, de 0,5 a 3, d'1 a 6 i de 3 a 10 barg, i sota consulta un de 5 a 15 barg. La pressi\u00f3 m\u00e0xima d'entrada est\u00e0ndard \u00e9s de 10 barg.\"}},{\"@type\":\"Question\",\"name\":\"Com s'ajusta la pressi\u00f3 de tarat de la PRV53?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Amb una clau Allen de 8 mm al cargol de regulaci\u00f3. En comprimir la molla augmenta la pressi\u00f3 a la qual s'obre la v\u00e0lvula i en descomprimir-la disminueix. Comprovi el valor al man\u00f2metre d'entrada i consulti la nostra guia sobre el tarat de v\u00e0lvules d'alleujament.\"}},{\"@type\":\"Question\",\"name\":\"Quin manteniment necessita?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No necessita manteniment peri\u00f2dic, per\u00f2 conv\u00e9 revisar les juntes i les peces de desgast segons les condicions de servei. Es pot fer amb la v\u00e0lvula instal\u00b7lada, despressuritzada i a\u00efllada. Hi ha kits de juntes en NBR, EPDM i FKM (PRV53.SP1 a SP3) i la molla de regulaci\u00f3 (PRV53.SP5).\"}},{\"@type\":\"Question\",\"name\":\"La PRV53 porta marcatge CE?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No li cal. Pel seu di\u00e0metre (DN15 a DN25) i la seva pressi\u00f3 nominal (PN25), queda dins de l'article 4.3 de la Directiva d'equips a pressi\u00f3 2014\/68\/UE, amb fluids dels grups 1 i 2.\"}},{\"@type\":\"Question\",\"name\":\"Es pot instal\u00b7lar en una zona ATEX?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"S\u00ed. La PRV53 t\u00e9 marcatge ATEX II 2 GD (certificat LOM 14.034 U) i es pot utilitzar en zones 1 i 2 (gasos, vapors i l\u00edquids inflamables) i 21 i 22 (pols combustible), segons la classe t\u00e8rmica que correspongui a la temperatura del fluid. Vegi el nostre article sobre v\u00e0lvules ATEX.\"}}]}]}]"},"product_brand":[],"product_cat":[80],"product_tag":[],"class_list":["post-789","product","type-product","status-publish","has-post-thumbnail","product_cat-uncategorized","first","instock","shipping-taxable","purchasable","product-type-variable"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.valfonta.com\/ca\/wp-json\/wp\/v2\/product\/789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.valfonta.com\/ca\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.valfonta.com\/ca\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.valfonta.com\/ca\/wp-json\/wp\/v2\/media\/181"}],"wp:attachment":[{"href":"https:\/\/www.valfonta.com\/ca\/wp-json\/wp\/v2\/media?parent=789"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.valfonta.com\/ca\/wp-json\/wp\/v2\/product_brand?post=789"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.valfonta.com\/ca\/wp-json\/wp\/v2\/product_cat?post=789"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.valfonta.com\/ca\/wp-json\/wp\/v2\/product_tag?post=789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}