{"id":3395,"date":"2020-12-13T09:00:33","date_gmt":"2020-12-13T17:00:33","guid":{"rendered":"https:\/\/www.linquip.com\/blog\/?p=3395"},"modified":"2025-08-28T00:02:56","modified_gmt":"2025-08-28T08:02:56","slug":"what-is-head-of-a-pump","status":"publish","type":"post","link":"https:\/\/www.linquip.com\/blog\/what-is-head-of-a-pump\/","title":{"rendered":"What is Head of a Pump? A Complete Guide"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.linquip.com\/blog\/what-is-head-of-a-pump\/#what_is_head_of_a_pump\" >what is head of a pump?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.linquip.com\/blog\/what-is-head-of-a-pump\/#Pressure_vs_Head\" >Pressure vs Head<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.linquip.com\/blog\/what-is-head-of-a-pump\/#Total_head\" >Total head<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.linquip.com\/blog\/what-is-head-of-a-pump\/#Pump_Head_vs_Suction_Head\" >Pump Head vs. Suction Head<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.linquip.com\/blog\/what-is-head-of-a-pump\/#Pump_head_vs_Flow_rate\" >Pump head vs Flow rate<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.linquip.com\/blog\/what-is-head-of-a-pump\/#Download_what_is_head_of_a_pump_PDF\" >Download what is head of a pump PDF<\/a><\/li><\/ul><\/nav><\/div>\n<p><span style=\"font-weight: 400;\">Water pumps are in use all around us. They can pump water from a well into our home or circulate the water in our central heating system and perform many other fluid moving tasks. One of the most misunderstood physical characteristics of a pump is the concept of the head. It\u2019s a concept that is incredibly simple to define but can be confusing when the concept is translated into examples involving real pumps. <\/span><\/p>\n<p>The highest height at which a pump can convey fluid against gravity is called the head. If you have a vertical pipe running straight up from the discharge exit, this is the clearest example. Fluid will be pumped up the pipe 5 meters from the discharge exit by a pump with a 5-meter head. A pump is an important <a href=\"https:\/\/www.linquip.com\/equipment?q=pump\"><strong>Product<\/strong><\/a> of employing Industrial Tools. Pumps are provided by several <a href=\"https:\/\/www.linquip.com\/suppliers-companies?category_id=263&amp;cn=pump\"><strong>Suppliers and Companies<\/strong><\/a>, different manufacturers, and a lot of distributors and there are a lot of pumps for sale on Linquip.<\/p>\n<p>A full list of pump head services is available on the Linquip website, which covers all OEM fleets. Linquip vendors can assist you with this. Please contact <a href=\"https:\/\/www.linquip.com\/experts?category_id=263&amp;cn=pump\"><strong>Linquip&#8217;s Pump Experts<\/strong><\/a> to learn more about how to connect with a wide choice of <a href=\"https:\/\/www.linquip.com\/suppliers-companies\/service-provider?category_id=263&amp;cn=pump\"><strong>Service Providers<\/strong><\/a> who consistently deliver the highest quality products.<\/p>\n<p><span style=\"font-weight: 400;\">This article will define the term \u201chead\u201d as it relates to pumps, so you should never have to worry again about <\/span><span style=\"font-weight: 400;\">what is head of a pump?<\/span><span style=\"font-weight: 400;\"> or why it\u2019s important. Follow this new bog in Linquip to find out.<\/span><\/p>\n<p style=\"text-align: center;\"><a title=\"\u21d2 View a List of Pump for Sale and Their Suppliers \u21d0\" href=\"https:\/\/www.linquip.com\/industrial-directories\/263\/pump\/for-sale\/?utm_source=blog&amp;utm_medium=content&amp;utm_campaign=CRO&amp;utm_term=what is head of a pump&amp;utm_content=for_sale\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\"><span style=\"font-size: 14pt;\"><strong>\u21d2 View a List of Pump for Sale and Their Suppliers \u21d0<\/strong><\/span><\/span><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"what_is_head_of_a_pump\"><\/span>what is head of a pump?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The pump head or discharge head of a water pump is a measure of the power of a pump. The greater the pump head, the greater the pressure that the pump can generate. This statistic is measured in meters (or feet) and is calculated by placing a tube on a pump\u2019s discharge and measuring the maximum height to which it can pump water.<\/span><\/p>\n<figure id=\"attachment_18582\" aria-describedby=\"caption-attachment-18582\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-18582\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/12\/15-Hydraulic-pump-head-Reference-sunbeltrentals.com_.jpg\" alt=\"\" width=\"600\" height=\"600\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/12\/15-Hydraulic-pump-head-Reference-sunbeltrentals.com_.jpg 600w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/12\/15-Hydraulic-pump-head-Reference-sunbeltrentals.com_-300x300.jpg 300w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/12\/15-Hydraulic-pump-head-Reference-sunbeltrentals.com_-150x150.jpg 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-18582\" class=\"wp-caption-text\">Hydraulic pump head Reference <strong>sunbeltrentals.com<\/strong><\/figcaption><\/figure>\n<div style=\"position: absolute; left: -4330px;\"><a href=\"http:\/\/www.pharmacynewbritain.com\/modafinil\/\" target=\"_blank\" rel=\"noopener\">http:\/\/www.pharmacynewbritain.com\/modafinil\/<\/a><\/div>\n<p><span style=\"font-weight: 400;\">Simply stated, a pump\u2019s head is the maximum height that the pump can achieve pumping against gravity. Intuitively, if a pump can produce more pressure, it can pump water higher and produce a higher head. The purest example of this is if you have a vertical pipe extending straight up from the discharge outlet. A pump with 5m of the head will pump fluid up the pipe 5m from the discharge outlet.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Also note that the higher the liquid in the tank, the higher the pump will be able to pump the water into the vertical discharge pipe, due to the head exerted by the liquid in the suction tank.\u00a0\u00a0\u00a0\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The imaginary vertical discharge pipe used to measure the head is shown in the figure below.<\/span><\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-3401 aligncenter\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/as.jpg\" alt=\"what is head of a pump? - Linquip\" width=\"600\" height=\"559\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/as.jpg 600w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/as-300x280.jpg 300w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/as-451x420.jpg 451w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Pressure_vs_Head\"><\/span>Pressure vs Head<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Sometimes the head can be confused with pressure during pump choice. There is a strict relation between them which is defined by the fluid specific gravity, so the relation is fluid dependent. So what is the difference between pressure and head?<\/span><\/p>\n<div style=\"position: absolute; left: -4660px;\"><a href=\"http:\/\/valleyofthesunpharmacy.com\/cialis\/\" target=\"_blank\" rel=\"noopener\">http:\/\/valleyofthesunpharmacy.com\/cialis\/<\/a><\/div>\n<p><span style=\"font-weight: 400;\">As mentioned above, Head is the height given by the pump to the fluid and it is measured in meters of liquid column [m.l.c.] or simply indicated in meters [m]. The given head is fluid independent, meaning different fluids with different specific gravities are all lifted at the same height. Pressure, instead, is fluid dependent and is affected by the liquid density. The force of a fixed height liquid column over a unitary area will change with different specific gravities. So in this case the same head generates different pressures.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><span style=\"font-weight: 400;\">pump head calculation<\/span><span style=\"font-weight: 400;\"> is not done directly. Manometers on the pump suction and delivery line give the measure of the pressure. Measurements given by manometers indicate differential pressures imposed by the pump between suction and discharge. These measures are read in [bar] [atm] [psi] [ft H2O] etc. Specific gravity \u03b3 has to be considered to evaluate the correspondent head.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Total_head\"><\/span>Total head<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">A much more useful measure of the head is the difference between the liquid level in the suction tank and the head in the vertical discharge pipe. This number is known as the \u201ctotal head\u201d that the pump can produce.<\/span><\/p>\n<figure id=\"attachment_18583\" aria-describedby=\"caption-attachment-18583\" style=\"width: 602px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-18583\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/12\/15-head-of-a-pump-Reference-quora.com_.jpg\" alt=\"\" width=\"602\" height=\"420\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/12\/15-head-of-a-pump-Reference-quora.com_.jpg 602w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/12\/15-head-of-a-pump-Reference-quora.com_-300x209.jpg 300w\" sizes=\"(max-width: 602px) 100vw, 602px\" \/><figcaption id=\"caption-attachment-18583\" class=\"wp-caption-text\">head of a pump Reference <strong>quora.com<\/strong><\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Increasing the level of the liquid in the suction tank will give rise to the increased head, and decreasing the level will give rise to a lower head. Pump manufacturers and suppliers often won\u2019t tell you how much head a pump can produce, because they can\u2019t predict what the height of the liquid in your suction tank will be. Instead, they will report the <\/span><span style=\"font-weight: 400;\">total head of pump<\/span><span style=\"font-weight: 400;\">, the difference in height between the level of liquid in the suction tank, and the height of a column of water that the pump can achieve. The total head is independent of the level of liquid in the suction tank.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Mathematically speaking, the <\/span><span style=\"font-weight: 400;\">total head formula<\/span><span style=\"font-weight: 400;\"> is as follows.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Total Head = Pump Head \u2013 Suction Head.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Pump_Head_vs_Suction_Head\"><\/span>Pump Head vs. Suction Head<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">A pump\u2019s suction head is similar to its pump head except it is the opposite. Rather than being a measure of the maximum discharge, it is a measure of the maximum depth from which a pump can raise water via suction.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">These are two equal but opposite forces that affect the flow of water pumps. As mentioned above, Total Head = Pump Head \u2013 Suction Head.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If the water level is higher than the pump, then the suction head is negative and the pump head will increase. This is because the water entering the pump applies additional pressure at the suction.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Conversely, if the pump is located above the water to be pumped, then the suction head is positive and the pump head will decrease. This is because the pump must use energy to bring the water to the level of the pump.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Pump_head_vs_Flow_rate\"><\/span>Pump head vs Flow rate<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><b>\u00a0\u00a0<\/b><span style=\"font-weight: 400;\">At the maximum pump head, the flow of a water pump system is zero. This is because the pump cannot generate any pressure to move water since all of the power is being used to lift the water that is already in the system.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">When the pump head is zero, the water flows at the maximum rate. The result of zero pump head is that the pump\u2019s energy can be entirely applied to moving water, rather than lifting it, so flow is faster.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">As pump head increases, flow decreases, and vice versa. This relationship creates a unique graph of an individual pump\u2019s operating field that can be used to select the correct water pump for any job.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Of course, when the flow is introduced into a <a href=\"https:\/\/en.wikipedia.org\/wiki\/Pump\" target=\"_blank\" rel=\"noopener noreferrer\">pump<\/a> system, friction must be taken into account. The force of friction between the water and the sides of the pipe further reduces the flow rate.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">When considering a flowing water pump system, Total Head = (Pump Head \u2013 Suction Head) + Friction. We are not going to discuss pipe friction here in any detail but it is important to know that if you are going to pump across a long-distance as well as up you are going to affect the overall pump head. The roughness of the pipe surface and sharp bends in the pipework will have significant effects on the pump head.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">So, now that you know the answer to the question \u2018<\/span><span style=\"font-weight: 400;\">what is head of a pump?<\/span><span style=\"font-weight: 400;\">\u2019, let us know what you think by leaving a reply in the comment section. We will be glad to have your viewpoint on the article. Is there any question we can help you through? Feel free to <a href=\"https:\/\/www.linquip.com\/sign-up?client_redirect=\/\" target=\"_blank\" rel=\"noopener noreferrer\">sign up on Linquip<\/a> to get the most professional advice from our experts.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Download_what_is_head_of_a_pump_PDF\"><\/span><strong>Download what is head of a pump PDF<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"su-button-center\"><a href=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/12\/linquip.com-What-is-Head-of-a-Pump-A-Complete-Guide.pdf\" class=\"su-button su-button-style-default su-button-wide\" style=\"color:#FFFFFF;background-color:#2D89EF;border-color:#246ec0;border-radius:12px\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"color:#FFFFFF;padding:0px 30px;font-size:22px;line-height:44px;border-color:#6cadf4;border-radius:12px;text-shadow:none\"> Download PDF<\/span><\/a><\/div>\n<h3><b>Buy Equipment or Ask for a Service<\/b><\/h3>\n<p>By using Linquip RFQ Service, you can expect\u00a0to receive quotations from various suppliers across multiple industries and regions.<\/p>\n<p style=\"text-align: center;\"><strong><a href=\"http:\/\/linquip.com\/get-quote?utm_source=blog&amp;utm_medium=content&amp;utm_campaign=product_list&amp;utm_term=product_list&amp;utm_content=rfq\" target=\"_blank\" rel=\"noopener\">Click Here to Request a Quotation From Suppliers and Service Providers<\/a><\/strong><\/p>\n<p><em><strong>Read More on Linquip<\/strong><\/em><\/p>\n<ul>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a title=\"What is Hydraulic Pumpp: Learn The Basics, Boost Your Knowledge\" href=\"https:\/\/www.linquip.com\/blog\/what-is-hydraulic-pump\/\" target=\"_blank\" rel=\"noopener\">What is Hydraulic Pump: Learn The Basics, Boost Your Knowledge<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a title=\"Difference Between Pump and Turbine\" href=\"https:\/\/www.linquip.com\/blog\/difference-between-pump-and-turbine\/\" target=\"_blank\" rel=\"noopener\" data-schema-attribute=\"\">Difference Between Pump and Turbine<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a title=\"How Does a Hydraulic Pump Work? 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A Complete Guide<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/how-and-when-to-replace-your-sump-pump\/\" target=\"_blank\" rel=\"noopener\">How and When to Replace Your Sump Pump?<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/what-is-a-demand-pump-and-how-does-it-work\/\" target=\"_blank\" rel=\"noopener\">What Is a Demand Pump and How Does It Work?\u00a0<\/a><\/span><\/span><\/strong><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Water pumps are in use all around us. They can pump water from a well into our home or circulate the water in our central heating system and perform many other fluid moving tasks. One of the most misunderstood physical characteristics of a pump is the concept of the head. It\u2019s a concept that is &#8230;<\/p>\n","protected":false},"author":4,"featured_media":3400,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[23],"tags":[],"class_list":["post-3395","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pump"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/3395","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/comments?post=3395"}],"version-history":[{"count":8,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/3395\/revisions"}],"predecessor-version":[{"id":36522,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/3395\/revisions\/36522"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/media\/3400"}],"wp:attachment":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/media?parent=3395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/categories?post=3395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/tags?post=3395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}