{"id":30540,"date":"2026-02-25T11:20:40","date_gmt":"2026-02-25T10:20:40","guid":{"rendered":"https:\/\/www.fluimac.com\/?page_id=30540"},"modified":"2026-03-12T17:18:57","modified_gmt":"2026-03-12T16:18:57","slug":"prevalence-pump-what-it-means-how-it-is-calculated-and-practical-applications","status":"publish","type":"page","link":"https:\/\/www.fluimac.com\/en\/prevalence-pump-what-it-means-how-it-is-calculated-and-practical-applications\/","title":{"rendered":"\u201cPump prevalence\u201d: what it means, how it is calculated, and practical applications"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"30540\" class=\"elementor elementor-30540 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\">\u201cPump prevalence\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\">what it means, how it is calculated, and practical applications<\/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>In fluid handling,<strong> head<\/strong> is one of the most important parameters for choosing and operating a pump correctly, both in <a href=\"https:\/\/www.fluimac.com\/en\/how-to-choose-a-centrifugal-pump-technical-guide-and-practical-advice\/\"><strong>centrifugal pumps<\/strong><\/a> and (in equivalent terms) in <strong><a href=\"https:\/\/www.fluimac.com\/en\/diaphragm-pump-operating-principles-and-practical-diagram\/\">diaphragm pumps<\/a><\/strong>, where <strong>pressure<\/strong> is often considered more directly.<\/p><p>Understanding what head is, how it affects performance, and how it is calculated allows you to select the most suitable machine and ensure <strong>efficient, safe, and long-lasting operation<\/strong> of the system.<\/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\">Flow rate and head: an essential balance<\/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>Flow rate (Q) and head (H) are closely related, especially in <a href=\"https:\/\/www.fluimac.com\/en\/centrifugal-fluid-handling-pumps\/\">centrifugal pumps<\/a>: in general, <strong>as the flow rate increases<\/strong>, <strong>the available head decreases<\/strong>, and vice versa.<br \/>This behavior is described by the manufacturer&#8217;s <a href=\"https:\/\/www.fluimac.com\/en\/pump-characteristic-curve-how-to-interpret-performance-and-efficiency\/\"><strong>characteristic curves<\/strong><\/a> (flow rate on the horizontal axis and head on the vertical axis) and is used to identify the correct operating point, ideally close to the point of maximum efficiency (BEP).<\/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\">What does \u201cprevalence\u201d mean (in simple terms)?<\/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>The head indicates <strong>how much energy per unit of weight<\/strong> the pump must supply to the fluid to move it from point A to point B in the system.<br \/>It is expressed in<strong> meters of fluid column<\/strong> (mH\u2082O when referring to water).<\/p><p>In practice, head is used to:<\/p><ul><li>overcome the <strong>difference in height<\/strong> between suction and delivery,<\/li><li>overcome <strong>pressure losses<\/strong> due to pipes, bends, valves, and accessories,<\/li><li>(if present) manage <strong>pressure<\/strong> differences between tanks\/lines.<\/li><\/ul><p><br \/>Useful note: head and pressure are related but are <strong>not the same thing<\/strong>. The conversion depends on the density of the fluid.<\/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\">How to calculate total prevalence<\/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>To calculate the head correctly, the system must be considered as a whole. The main contributions are:<\/p><ul><li><strong>Height difference (geodetic\/static head)<\/strong>: difference in height between the suction level and the delivery point.<\/li><li><strong>Pressure losses<\/strong>: energy lost due to friction in pipes, bends, valves, filters, etc. (both on the suction and delivery sides).<\/li><li><strong>Pressure difference<\/strong> (if any): for example, pressurized tanks or lines with different pressures.<\/li><li><strong>Velocity term<\/strong>: often small, but appears in the complete formula.<br \/><br \/><\/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_losses<br \/><br \/><\/b>Where:<\/h6><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><p><strong>p<\/strong> = pressure, <strong>\u03c1<\/strong> = density, <strong>g<\/strong> = gravity<\/p><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><p><strong>z\u2082<\/strong> \u2212 <strong>z\u2081<\/strong> = difference in elevation (geodetic height)<\/p><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><p><strong>\u03a3h_losses<\/strong> = total pressure losses<br \/><br \/><\/p><\/li><\/ul><h6><b>Typical practical case (system with open tanks and negligible velocity):<br \/>H \u2248 (z\u2082 \u2212 z\u2081) + \u03a3h_losses<\/b><\/h6><p>In practice, it is reasonable to add a <strong>margin of 10\u201315%<\/strong> for variations (temperature, density, scaling, pipe wear).<\/p><h4><b><br \/>Clarification of terms:<\/b><\/h4><p>In technical language, some terms are misused or used as synonyms. Here is a clear definition:<\/p><ul><li><strong>Height difference \/ geodetic head (static)<\/strong>: only difference in height.<\/li><li><strong>Pressure losses<\/strong>: friction + localized resistance (bends\/valves\/fittings).<\/li><li><strong>Total head<\/strong>: sum of height + losses + any pressure + any velocity.<br \/><br \/><\/li><\/ul><p>Therefore: the <strong>geodetic height does NOT include losses<\/strong> (these are another factor).<\/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\">How to choose the pump based on the head<\/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>A correct selection usually follows these steps:<\/p><ol><li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Define the required flow rate (Q)<\/strong><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Calculate the total head (H)<\/strong> including height difference + losses + (possible) pressure<\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Estimate the pressure losses accurately<\/strong>, which depend on:<ul><li style=\"font-weight: 400;\" aria-level=\"2\">length\/diameter and roughness of the pipes<\/li><li style=\"font-weight: 400;\" aria-level=\"2\">number of bends and fittings<\/li><li style=\"font-weight: 400;\" aria-level=\"2\">type\/condition of the valves<\/li><li style=\"font-weight: 400;\" aria-level=\"2\">viscosity and temperature of the fluid<\/li><\/ul><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Compare the point (Q,H)<\/strong> with the flow rate\/head curves of the available models<\/li><\/ol><p><strong>Check NPSH<\/strong>: make sure that the <strong>available NPSH<\/strong> is always greater than the <strong>NPSH required<\/strong> by the pump, otherwise you <a href=\"https:\/\/www.fluimac.com\/en\/cavitation-in-pumps-meaning-and-useful-tips-to-prevent-it\/\">risk cavitation<\/a> (noise, vibrations, damage).<\/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\">Prevalence and pressure: rapid conversion<\/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>For water at room temperature (\u03c1 \u2248 1000 kg\/m\u00b3):<\/p><ul><li><strong>1 bar \u2248 10.2 mH\u2082O<br \/><br \/><\/strong><\/li><\/ul><p>For denser or lighter fluids, the ratio changes, so this conversion is useful as a quick estimate, but should not be taken as a \u201cuniversal law.\u201d<\/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\">Why prevalence is crucial<\/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>Prevalence is not just a number: it determines whether the system will operate with:<\/p><ul><li>stable flow rate,<\/li><li>reasonable consumption,<\/li><li>fewer breakdowns and less downtime,<\/li><li>longer pump life.<br \/><br \/><\/li><\/ul><p>At Fluimac, these parameters are central to every project: each pump is designed and tested to ensure consistent performance over time, even in the most complex applications.<\/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-d33f516 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d33f516\" 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-2b9216a\" data-id=\"2b9216a\" 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-17a78f7 elementor-widget elementor-widget-heading\" data-id=\"17a78f7\" 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\">Ask for advice\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-635014e elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"635014e\" 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-1d92a89 elementor-widget elementor-widget-text-editor\" data-id=\"1d92a89\" 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;\">Do you need support in choosing the centrifugal pump most in line with your specific fluid handling needs?<\/span><\/p><p><span style=\"font-weight: 400;\">Fill out the form below and you will be contacted by our staff.<\/span><\/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-355984f elementor-widget elementor-widget-global elementor-global-15406 elementor-widget-html\" data-id=\"355984f\" 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\" data-cmp-ab=\"2\"><\/script>\n<script>\n  hbspt.forms.create({\n    region: \"eu1\",\n    portalId: \"144007426\",\n    formId: \"e7d4f482-c737-4f74-98af-d845d77139de\"\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\">The best solutions, certified\u200b<\/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-8377\" 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-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-8380\" 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-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-8383\" 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-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-8386\" 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-8389\" 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-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-8392\" 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-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-8395\" 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\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>\u201cPump prevalence\u201d: what it means, how it is calculated, and practical applications In fluid handling, head is one of the most important parameters for choosing and operating a pump correctly, both in centrifugal pumps and (in equivalent terms) in diaphragm pumps, where pressure is often considered more directly. Understanding what head is, how it affects [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8374,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_wp_rev_ctl_limit":""},"class_list":["post-30540","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>\u201cPump prevalence\u201d: what it means, how it is calculated, and practical applications<\/title>\n<meta name=\"description\" content=\"What is pump head and how is it calculated? 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