{"id":30539,"date":"2026-02-25T11:20:40","date_gmt":"2026-02-25T10:20:40","guid":{"rendered":"https:\/\/www.fluimac.com\/?page_id=30539"},"modified":"2026-03-12T12:01:29","modified_gmt":"2026-03-12T11:01:29","slug":"prevalenza-pompa-cosa-significa-come-si-calcola-e-applicazioni-pratiche","status":"publish","type":"page","link":"https:\/\/www.fluimac.com\/it\/prevalenza-pompa-cosa-significa-come-si-calcola-e-applicazioni-pratiche\/","title":{"rendered":"\u201cPrevalenza pompa\u201d: cosa significa, come si calcola e applicazioni pratiche"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"30539\" class=\"elementor elementor-30539\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-464fa4e elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"464fa4e\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-9c56e23\" data-id=\"9c56e23\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4094b5b elementor-widget elementor-widget-heading\" data-id=\"4094b5b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">\u201cPrevalenza pompa\u201d:<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-654d18d elementor-widget elementor-widget-heading\" data-id=\"654d18d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">cosa significa, come si calcola e applicazioni pratiche<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-9eb5820\" data-id=\"9eb5820\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-340e0dd elementor-widget elementor-widget-text-editor\" data-id=\"340e0dd\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Nella movimentazione dei fluidi, la <\/span><b>prevalenza<\/b><span style=\"font-weight: 400;\"> \u00e8 uno dei parametri pi\u00f9 importanti per scegliere e far lavorare bene una pompa, sia nelle <\/span><a href=\"https:\/\/www.fluimac.com\/it\/come-scegliere-una-pompa-centrifuga-guida-tecnica-e-consigli-pratici\/\"><b>pompe centrifughe<\/b><\/a><span style=\"font-weight: 400;\"> sia (in termini equivalenti) nelle <\/span><a href=\"https:\/\/www.fluimac.com\/it\/pompa-a-membrana-principi-di-funzionamento-e-schema-pratico\/\" data-wplink-edit=\"true\"><b>pompe a membrana<\/b><\/a><span style=\"font-weight: 400;\">, dove spesso si ragiona pi\u00f9 direttamente in <\/span><b>pressione<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Conoscere cos\u2019\u00e8 la prevalenza, come incide sulle prestazioni e come si calcola permette di selezionare la macchina pi\u00f9 adatta e garantire un funzionamento <\/span><b>efficiente, sicuro e duraturo<\/b><span style=\"font-weight: 400;\"> dell\u2019impianto.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-806e401 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"806e401\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-279e606\" data-id=\"279e606\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4fa3130 elementor-widget elementor-widget-heading\" data-id=\"4fa3130\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Portata e prevalenza: un equilibrio essenziale<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-625ef84 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"625ef84\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-4c2b321 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"4c2b321\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-ee00f80\" data-id=\"ee00f80\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fa8871e elementor-widget elementor-widget-text-editor\" data-id=\"fa8871e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Portata (Q) e prevalenza (H) sono strettamente legate, soprattutto nelle <a href=\"https:\/\/www.fluimac.com\/it\/pompe-centrifughe-movimentazione-fluidi\/\" data-wplink-edit=\"true\">pompe centrifughe<\/a>: in generale, <\/span><b>aumentando la portata la prevalenza disponibile diminuisce<\/b><span style=\"font-weight: 400;\">, e viceversa.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\"> Questo comportamento \u00e8 descritto dalle <\/span><a href=\"https:\/\/www.fluimac.com\/it\/curva-caratteristica-della-pompa-come-interpretare-prestazioni-e-rendimento\/\"><b>curve caratteristiche<\/b><\/a><span style=\"font-weight: 400;\"> del costruttore (portata sull\u2019asse orizzontale e prevalenza su quello verticale) e serve per individuare il punto di lavoro corretto, idealmente vicino al punto di massima efficienza (BEP).<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3a0954e elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"3a0954e\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-45f64b2\" data-id=\"45f64b2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a487d9a elementor-widget elementor-widget-heading\" data-id=\"a487d9a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Cosa significa \u201cprevalenza\u201d (in parole semplici)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3f2cb7a elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3f2cb7a\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-d5180c8 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"d5180c8\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-d38acea\" data-id=\"d38acea\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1dc8424 elementor-widget elementor-widget-text-editor\" data-id=\"1dc8424\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">La prevalenza indica <\/span><b>quanta energia per unit\u00e0 di peso<\/b><span style=\"font-weight: 400;\"> la pompa deve fornire al fluido per farlo arrivare dal punto A al punto B dell\u2019impianto.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><span style=\"font-weight: 400;\"> Si esprime in <\/span><b>metri di colonna di fluido<\/b><span style=\"font-weight: 400;\"> (mH\u2082O se riferita all\u2019acqua).<\/span><\/p><p><span style=\"font-weight: 400;\">In pratica, la prevalenza serve a:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">superare il <\/span><b>dislivello<\/b><span style=\"font-weight: 400;\"> tra aspirazione e mandata,<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">vincere le <\/span><b>perdite di carico<\/b><span style=\"font-weight: 400;\"> dovute a tubazioni, curve, valvole e accessori,<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">(se presenti) gestire differenze di <\/span><b>pressione<\/b><span style=\"font-weight: 400;\"> tra serbatoi\/linee.<br \/><br \/><\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Nota utile: prevalenza e pressione sono collegate ma <\/span><b>non sono la stessa cosa<\/b><span style=\"font-weight: 400;\">. La conversione dipende dalla densit\u00e0 del fluido.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c26bd69 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"c26bd69\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4ec7769\" data-id=\"4ec7769\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5af9759 elementor-widget elementor-widget-heading\" data-id=\"5af9759\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Come si calcola la prevalenza totale<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d945e8 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"4d945e8\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-8dd3c4c elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"8dd3c4c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-5a55c9c\" data-id=\"5a55c9c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-72a9234 elementor-widget elementor-widget-text-editor\" data-id=\"72a9234\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Per calcolare correttamente la prevalenza bisogna considerare il sistema nel suo insieme. I contributi principali sono:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Dislivello (prevalenza geodetica \/ statica)<\/b><span style=\"font-weight: 400;\">: differenza di quota tra livello di aspirazione e punto di mandata.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Perdite di carico<\/b><span style=\"font-weight: 400;\">: energia persa per attrito in tubazioni, curve, valvole, filtri, ecc. (sia in aspirazione che in mandata).<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Differenza di pressione<\/b><span style=\"font-weight: 400;\"> (se presente): ad esempio serbatoi pressurizzati o linee a pressione diversa.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Termine di velocit\u00e0<\/b><span style=\"font-weight: 400;\">: spesso piccolo, ma nella formula completa compare.<br \/><br \/><\/span><\/li><\/ul><h6><b>Formula:<\/b><\/h6><h6><b>H = (p\u2082 \u2212 p\u2081)\/(\u03c1\u00b7g) + (z\u2082 \u2212 z\u2081) + (v\u2082\u00b2 \u2212 v\u2081\u00b2)\/(2g) + \u03a3h_perdite<br \/><\/b><\/h6><p><span style=\"font-weight: 400;\">Dove:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>p<\/b><span style=\"font-weight: 400;\"> = pressione, <\/span><b>\u03c1<\/b><span style=\"font-weight: 400;\"> = densit\u00e0, <\/span><b>g<\/b><span style=\"font-weight: 400;\"> = gravit\u00e0<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>z\u2082 \u2212 z\u2081<\/b><span style=\"font-weight: 400;\"> = differenza di quota (altezza geodetica)<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u03a3h_perdite<\/b><span style=\"font-weight: 400;\"> = perdite di carico totali<br \/><br \/><\/span><\/li><\/ul><h6><b>Caso pratico tipico (impianto con serbatoi aperti e velocit\u00e0 trascurabile):<\/b><b><br \/><\/b> <b>H \u2248 (z\u2082 \u2212 z\u2081) + \u03a3h_perdite<\/b><\/h6><p><span style=\"font-weight: 400;\">Nella pratica \u00e8 ragionevole aggiungere un <\/span><b>margine 10\u201315%<\/b><span style=\"font-weight: 400;\"> per variazioni (temperatura, densit\u00e0, incrostazioni, usura tubazioni).<\/span><\/p><h4><b><br \/>Chiarimento termini:<\/b><\/h4><p><span style=\"font-weight: 400;\">Nel linguaggio tecnico alcuni termini vengono usati male o come sinonimi. Qui una definizione pulita:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Dislivello \/ prevalenza geodetica (statica)<\/b><span style=\"font-weight: 400;\">: solo <\/span><b>differenza di quota<\/b><span style=\"font-weight: 400;\">.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Perdite di carico<\/b><span style=\"font-weight: 400;\">: attrito + resistenze localizzate (curve\/valvole\/raccordi).<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Prevalenza totale<\/b><span style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">: somma di quota + perdite + eventuale pressione + eventuale velocit\u00e0.<br \/><br \/><\/span><\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Quindi: <\/span><b>l\u2019altezza geodetica NON include le perdite<\/b><span style=\"font-weight: 400;\"> (quelle sono un altro addendo).<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-02b3102 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"02b3102\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d676ebd\" data-id=\"d676ebd\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ee4cd6b elementor-widget elementor-widget-heading\" data-id=\"ee4cd6b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Come scegliere la pompa in base alla prevalenza<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a1f4a4f elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"a1f4a4f\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-5b72013 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"5b72013\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-8514809\" data-id=\"8514809\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4a6589c elementor-widget elementor-widget-text-editor\" data-id=\"4a6589c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Una selezione corretta di solito segue questi passaggi:<\/span><\/p><ol><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Definisci la portata richiesta (Q)<\/b><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Calcola la prevalenza totale (H)<\/b><span style=\"font-weight: 400;\"> includendo dislivello + perdite + (eventuale) pressione<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Stima bene le perdite di carico<\/b><span style=\"font-weight: 400;\">, che dipendono da:<\/span><ul><li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">lunghezza\/diametro e rugosit\u00e0 delle tubazioni<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">numero di curve e raccordi<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">tipo\/stato delle valvole<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">viscosit\u00e0 e temperatura del fluido<\/span><\/li><\/ul><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Confronta il punto (Q,H)<\/b><span style=\"font-weight: 400;\"> con le curve portata\/prevalenza dei modelli disponibili<br \/><br \/><\/span><\/li><\/ol><p><b>Verifica NPSH<\/b><span style=\"font-weight: 400;\">: assicurati che l\u2019<\/span><b>NPSH disponibile<\/b><span style=\"font-weight: 400;\"> sia sempre maggiore dell\u2019<\/span><b>NPSH richiesto<\/b><span style=\"font-weight: 400;\"> dalla pompa, altrimenti <a href=\"https:\/\/www.fluimac.com\/it\/cavitazione-nelle-pompe-significato-e-consigli-utili-per-prevenirla\/\">rischi cavitazione<\/a> (rumore, vibrazioni, danni).<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-67d3b01 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"67d3b01\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b3dd71c\" data-id=\"b3dd71c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e289112 elementor-widget elementor-widget-heading\" data-id=\"e289112\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Prevalenza e pressione: conversione rapida<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3ceb2dd elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3ceb2dd\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-bd39f23 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"bd39f23\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-fba500e\" data-id=\"fba500e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e759549 elementor-widget elementor-widget-text-editor\" data-id=\"e759549\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Per l\u2019acqua a temperatura ambiente (\u03c1 \u2248 1000 kg\/m\u00b3):<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>1 bar \u2248 10,2 mH\u2082O<\/b><b><br \/><br \/><\/b><\/li><\/ul><p><span style=\"font-weight: 400;\">Per fluidi pi\u00f9 densi o pi\u00f9 leggeri il rapporto cambia, quindi questa conversione \u00e8 utile come stima veloce, ma non va presa come \u201clegge universale\u201d.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-973f749 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"973f749\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f093354\" data-id=\"f093354\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1a5e4e8 elementor-widget elementor-widget-heading\" data-id=\"1a5e4e8\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Perch\u00e9 la prevalenza \u00e8 fondamentale<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-615f9f6 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"615f9f6\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-e974ff4 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"e974ff4\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-9052380\" data-id=\"9052380\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e5f32af elementor-widget elementor-widget-text-editor\" data-id=\"e5f32af\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">La prevalenza non \u00e8 solo un numero: \u00e8 ci\u00f2 che determina se l\u2019impianto lavorer\u00e0 con:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">portata stabile,<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">consumi ragionevoli,<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">meno guasti e meno fermi,<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">maggiore durata della pompa.<br \/><\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">In Fluimac questi parametri sono centrali in ogni progetto: ogni pompa viene studiata e testata per garantire prestazioni costanti nel tempo anche nelle applicazioni pi\u00f9 complesse.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a698295 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a698295\" data-element_type=\"section\" id=\"form\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7582fb4\" data-id=\"7582fb4\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-412b794 elementor-widget elementor-widget-heading\" data-id=\"412b794\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Richiedi una consulenza<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-238ba72 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"238ba72\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-78fd9f4 elementor-widget elementor-widget-text-editor\" data-id=\"78fd9f4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Necessiti di supporto per la scelta dell\u2019agitatore verticale pi\u00f9 in linea con le tue specifiche esigenze di movimentazione fluidi?<\/p><p>Compila il form sottostante e verrai ricontattato dal nostro staff.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-678a78d elementor-widget elementor-widget-global elementor-global-16334 elementor-widget-html\" data-id=\"678a78d\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<script charset=\"utf-8\" type=\"text\/javascript\" src=\"\/\/js-eu1.hsforms.net\/forms\/embed\/v2.js\"><\/script>\n<script>\n  hbspt.forms.create({\n    portalId: \"144007426\",\n    formId: \"5f0eb2f0-a9e4-447e-9efe-2f914dfcbd11\"\n  });\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fc7312e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fc7312e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4fbfbdc\" data-id=\"4fbfbdc\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bdc16f1 elementor-widget elementor-widget-heading\" data-id=\"bdc16f1\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Le migliori soluzioni, certificate<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0adb21f elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"0adb21f\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-daf0fb0 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"daf0fb0\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-14 elementor-inner-column elementor-element elementor-element-cfafe32\" data-id=\"cfafe32\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-712a804 elementor-widget elementor-widget-image\" data-id=\"712a804\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"425\" height=\"425\" src=\"https:\/\/www.fluimac.com\/wp-content\/uploads\/2024\/04\/certificazione_01.webp\" class=\"attachment-large size-large wp-image-370\" alt=\"Certificazione CE - Fluimac - Pumps we trust\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-14 elementor-inner-column elementor-element elementor-element-273aa74\" data-id=\"273aa74\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e2ca8fd elementor-widget elementor-widget-image\" data-id=\"e2ca8fd\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"425\" height=\"425\" src=\"https:\/\/www.fluimac.com\/wp-content\/uploads\/2024\/04\/certificazione_02.webp\" class=\"attachment-large size-large wp-image-371\" alt=\"Certificazione EX - Fluimac - Pumps we trust\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-14 elementor-inner-column elementor-element elementor-element-50c8f42\" data-id=\"50c8f42\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-62610a5 elementor-widget elementor-widget-image\" data-id=\"62610a5\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"425\" height=\"425\" src=\"https:\/\/www.fluimac.com\/wp-content\/uploads\/2024\/04\/certificazione_03.webp\" class=\"attachment-large size-large wp-image-372\" alt=\"Certificazione UKCA - Fluimac - Pumps we trust\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-14 elementor-inner-column elementor-element elementor-element-3f53272\" data-id=\"3f53272\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-85d0561 elementor-widget elementor-widget-image\" data-id=\"85d0561\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"425\" height=\"425\" src=\"https:\/\/www.fluimac.com\/wp-content\/uploads\/2024\/04\/certificazione_04.webp\" class=\"attachment-large size-large wp-image-373\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-14 elementor-inner-column elementor-element elementor-element-b9fce43\" data-id=\"b9fce43\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a8bf1c9 elementor-widget elementor-widget-image\" data-id=\"a8bf1c9\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"425\" height=\"425\" src=\"https:\/\/www.fluimac.com\/wp-content\/uploads\/2024\/04\/certificazione_05.webp\" class=\"attachment-large size-large wp-image-374\" alt=\"Certificazione - Fluimac - Pumps we trust\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-14 elementor-inner-column elementor-element elementor-element-8647c3b\" data-id=\"8647c3b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b0f2ced elementor-widget elementor-widget-image\" data-id=\"b0f2ced\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"425\" height=\"425\" src=\"https:\/\/www.fluimac.com\/wp-content\/uploads\/2024\/04\/certificazione_FDA-COMPLIANT.webp\" class=\"attachment-large size-large wp-image-375\" alt=\"Certificazione FDA COMPLIANT - Fluimac - Pumps we trust\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-14 elementor-inner-column elementor-element elementor-element-0c83cd3\" data-id=\"0c83cd3\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e61a5b9 elementor-widget elementor-widget-image\" data-id=\"e61a5b9\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"425\" height=\"425\" src=\"https:\/\/www.fluimac.com\/wp-content\/uploads\/2024\/04\/certificazione_07.webp\" class=\"attachment-large size-large wp-image-376\" alt=\"Certificazione IECEX- Fluimac - Pumps we trust\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\u201cPrevalenza pompa\u201d: cosa significa, come si calcola e applicazioni pratiche Nella movimentazione dei fluidi, la prevalenza \u00e8 uno dei parametri pi\u00f9 importanti per scegliere e far lavorare bene una pompa, sia nelle pompe centrifughe sia (in termini equivalenti) nelle pompe a membrana, dove spesso si ragiona pi\u00f9 direttamente in pressione. Conoscere cos\u2019\u00e8 la prevalenza, come [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":369,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_wp_rev_ctl_limit":""},"class_list":["post-30539","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u201cPrevalenza pompa\u201d: cosa significa, come si calcola e applicazioni pratiche<\/title>\n<meta name=\"description\" content=\"Cos\u2019\u00e8 la prevalenza di una pompa e come si calcola? 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