Pump curve diagram. Let’s get started.

Pump curve diagram. (a single stage vertical turbine pump) together with the characteristic curve of the process, known as the system curve. The difference between the two is however important to understand. capacity, and pump eficiency vs. Sizing a Pump (Metric Units) Summary This example will walk you through a simple calculation to size a pump. Library Viking Pump believes in equipping our distributors and end-users with all the information they need to install, maintenance, and repair their pumps without a hassle. Centrifugal Pump Performance Curve Explained | Master the Pump Curve for Optimal Results | Core EngineeringIn this video we are going to discuss about the ;M This series of articles explains what a pump is, what the main parts of a pump are, how to pick the right pump design for an application, and much more. The difference lies on one hand in the principle of transporting the liquid and on the other hand in the pumping characteristic. May 26, 2024 · Learn how to read a pump curve and make informed pump selections for your process system. The pump performance curve describes the relation between the flowrate and the head for the actual pump. Definition What is the characteristic curve of a pump ? The pump characteristic gives the performance of the pump by plotting : The pump Head H (m) The pump efficiency η (%) The NPSH (m) The power P (kW) As a function of the flow rate Q (m3/h) The pump characteristic is an essential tool in design, selection and troubleshooting of pumps. There are two types of centrifugal pumps: “non-self priming” and “selfpriming”. Article contain how to select pump, performance analysis, power estimation, NPSH estimation and also to create or complete calculation sheet, datasheet and specification sheet as a part of detail engineering and Viscosity Viscosity is a measurement of a product’s resistance to flow. S. The pump curve describes the Pump curves and other product data in this bulletin are for illustration only. , canned motor pumps z 1150 RPM PUMP CURVES 7-21-78 CENTRIFUGAL PUMP SERIES 22 20 1150 R. Pump performance is shown by means of a plotted curve which relates the flow (gallons per minute) to the UPUBM head produced (head in feet of fluid. Jun 4, 2013 · One of the most important lines on a pump performance curve is the Net Positive Suction Head (NPSH) curve. The pump is particularly suitable when the flow rate is considerably constant and the head is subject to limited variations. Topics covered include flow, pressure, head, capacity, NPSH, power curve, best effic MINIMUM FLOW RATE: 70 GPM [16 m3/hr] 0 20 40 60 80 100 120 140 Q [m3/h] Our downloadable Axial Flow Curve cut sheets provide TDH and GPM information for our axial flow pumps at set RPMs. : Pump outlet, dia. We look at basic pump curve, head pressure, flow rate, pump performance Pump system curve Pump system curve is sometimes also refereed to as System resistance curve. H . But not all performance curves are created equally, and each manufacturer may have different formats. Find out how to interpret the symbol and its various components. C. E. Positive displacement pumps come in different types: many are driven by a reciprocating mechanism with passive suction and discharge valves to prevent backflow as illustrated in Figure 1. Lineshaft and Submersible Turbine Pump Curves 1200 RPM CURVES – 60 CYCLE PERFORMANCE Feb 4, 2025 · Centrifugal Pump curves are also called centrifugal pump performance curves or sometimes simply as performance curves are important tools. Department of Energy Pump Energy Conservation Standards and Hydraulic Institute Standards for Energy Ratings. Other sections provide additional information on the selection and application of centrifugal pumps. 6a Figure 9. One of our application engineers helps break down the parts of a multistage pump curve. Other training publications as well as the Bell & Gossett design tools described in this booklet including the System Syzer, analog and digital versions, and ESP Plus are all available from your local Bell & Gossett representative. This curve is indicative of the ability of the pump to add head at different flow rates. avail . Here’s a quick breakdown to understand and use it effectively: 1. On this page you will find pump resources, drawings, promotional materials, a curve generator, energy savings calculator, conversion calculator, and more. The same goes for the ef-ficiency value, which only covers the pump part (η = ηP). H. Crane Engineering walks you through a standard centrifugal pump curve. A typical composite curve includes the pump performance curves, horsepower curves and NPSH required. 1. Sep 9, 2025 · (Image: A clear diagram of a centrifugal pump curve with arrows pointing to and labeling: Flow Rate (Q) on the X-axis, Total Head (H) on the Y-axis, the Main H-Q Curve, the BEP point, the Power Consumption curve, the Efficiency curves, and the NPSHr curve. , 60 Hz. May 10, 2025 · The aim of this practical guide is to provide a clear, step-by-step explanation of the different types of pump curves - whether centrifugal or positive displacement - and to show how to interpret them to ensure reliable, economical operation. Flow vs. Manufacturers provide efficiency information on the curves, with lines intersecting the head-capacity curves and labeled with percentages. Summary Reading and understanding centrifugal pump curves is key to proper pump selection, and to their reliable and efficient operation. Understand flow, head, and best efficiency points. EFFICIENCY CORRECTION APPLIES TO HEAD, FLOW AND HORSEPOWER FOR LESSER STAGES. Providing 3D technology allows customers to utilize advanced technology to improve production accuracy and efficiency. The pump casing guides the liquid from the suction connection to the center, or eye, of the impeller. A pump is defined by its characteristic curve, which relates the pump head, or the head added to the system, to the flow rate. Review pump performance curves in an instant Are you looking for a way to quickly verify that the pump you’ve chosen can meet your duty points? Or have your pump curve explained? Grundfos Product Center makes accessing and reading pump curves easier than ever, providing a simple display of system characteristics to help you understand your pump’s efficiency and verify your pump choice The conditions at which the system will operate willdepend on the intersection of the system head curve with the pump performance curve as shown in the figure below. The external gear pump is a positive displacement (PD) type of pump generally used for the transfer and metering of liquids. The first pipe from the supply reservoir to the pump is 10 feet long, and the second pipe The document discusses Goulds pumps, including their severe duty slurry pumps, high-pressure multi-stage pumps, chemical process pumps, and double suction pumps. An introduction to Centrifugal Pumps. za TYPE IMPELLER B1127 LINER WPA AH VANES TYPE MAT’L VANE O MAT’L 151B01 5 OPEN METAL 152 METAL COPYRIGHT RESEARCH AND DEVELOPMENT PTY LTD Sep 1, 2005 · Well Curves Just as the performance of a pump can be described using a pump curve in terms of feet of water and gallons of flow, the performance of a well can be defined using the same terms. Pump manufacturers provide pump performance curves (also known as “pump flow curves” or just “pump curves”) to assist users in the selection, testing, operation and maintenance of pumps. 1900 Series Multi-Stage Split Case Pumps 1900 Series Coverage Chart 1800 RPM HP 100 Pump Curves Tutorial A pump performance curve is a graphical representation of the head generated by a specific pump model at rates of flow from zero to maximum at a given operating speed. In this module, we’re going to show you how to read a pump curve. For plotting of the three operating curves of the selected pump of a type 25E20 produced by #VIPOM company the original pump curves diagram is used. 4) 80 (18. Let’s get started. Examples of such parameters are the impeller diameter (see Impeller trimming), pre-swirl control, (see Figs. A pump curve provides a wealth of information regarding the performance capabilities of a pump. Pump curves are essential during the decision making process, as they provide the information you need in order to see whether the pump will perform how you need it to! In their most basic form, performance curves contain flow rate and pressure data. Pump Curves & Drawings Pump curves and technical drawings for all pumps represented on this site are available from the Liberty Process Equipment Website in downloadable PDF form. Conveniently located high and dry at ground level where installation is simple and maintenance is easily and more economically performed, the Mark 3 Self-Priming pump costs less to buy, install and Reading pump curves can be a difficult undertaking, as various types of pumps correlate to different sorts of curves. 15a In addition to the pump’s Q-H curve the required shaft power P and the pump’s total efficiency as shown in figure 3. Apr 24, 2013 · By Ron Astall, United Pumps Australia Centrifugal pumps are frequently operated in parallel to achieve higher system flows, to enhance system flexibility or to provide greater pump redundancy and hence […] Jun 13, 2021 · Learn how to read a pump performance curve. Equations are provided for power and efficiency related to Alfa Laval LKH Performance curves 132 Impeller, Min. The first step on the way to the optimal pump is the selection between a centrifugal pump or a positive displacement pump. It is based on the horsepower of the pump and the size and shape of the impeller. may occur. Therefore, the constant between each curve is the capacity, or x-axis. The system consists of a supply reservoir, a pump, a discharge reservoir, and two pipes. Secondary influences such as cavitation Lineshaft and Submersible Turbine Pump Curves 900 RPM CURVES – 60 CYCLE PERFORMANCE Sep 17, 2020 · Learn to navigate Warman pump curves, from understanding pump size, impeller details and more. In this video we take a look at pump charts to understand the basics of how to read a pump chart. 12 10 Impellers are trimmed in incre- ments to supply required capacity. These standards apply to five styles of clean water pumps in 1800 and 3600 nominal motor speeds. During a transient event, turbining, flow reversal, speed reversal, etc. They provide a visual representation of the relationship between various operational parameters of a micro air vacuum pump. The energy from the pumps prime mover is transfered to kinetic energy according the Bernoulli Equation. Now lets us start with the Feb 20, 2022 · Here is an explanation for all the pump curves you'll find on a pump chart, from GPM, Total Head, Impeller Size, Horsepower, Efficiency Being able to read a pump curve is essential for anyone working with pumps, as it makes it easier for you to always select the right pump for a particular hydraulic system. Find the perfect pump for your system with our System Pump Curve Generator. (This nomenclature differen-tiates it from an internal gear pump, which has one gear positioned inside the other. When selecting a gear pump, relying solely on displacement and pressure ratings is insufficient. NOTE! The curves refer to motor: 4 kW, 2840 rpm. The Pump Curve The amount of water a pump delivers depends on the conditions under which it operates. But could you read a fire pump curve if it was […] Jan 22, 2015 · Learn how operating centrifugal pumps in series or parallel can help you reach system operating requirements without purchasing a larger pump. For a new pump, our calculations of Total Head for a given flow rate will have determined the impeller diameter to select according to the performance curve. Oct 4, 2015 · Similar to the System Head and the System Curve, we have the Pump Head and the Pump Curve. ) Feb 19, 2018 · Identifying the best pump for your application starts with examining the pump curve, which indicates how a pump will perform against specific rates of pressure head and flow. Unlike rolled steel and “C” channel baseplates, the Series 1510 baseplate provides a heavy duty saddle assembly, full seam welds, closed baseplate ends and an open top to provide ease of access for proper equipment grouting. 0 either re. This is known as the N. A typical curve chart will show pressure on the Aug 22, 2024 · Part 1 in a series about building, reading, and understanding centrifugal pump curves. This Being able to read a pump curve is essential for anyone working with pumps, as it makes it easier for you to always select the right pump for a particular hydraulic system. Pump manufacturers are required to provide such documentation for each sump pump model so that purchasers can buy the right sized pump for their water pumping needs. Calculate the air pressure required to move a specific volume of fluid with an AODD pump. When measuring the total performance of a well, a slight departure from the technique used above is in order. Point A (O) on the performance curve is where the desired Flow Introduction to Pump Curves A performance curve is normally a curved line drawn on a grid or graph of vertical and horizontal lines. Series Close Coupled In-line Centrifugal Pump Performance Curves – 60 HZ Constant efficiency curve The constant efficiency or iso efficieny curve gives the performance of pump over its entire range of operations. First, in order to correlate four quadrant pump data based on specific speed, true dimensional and dynamic similarity between pumps must exist. The energy transferred to the liquid corresponds to the velocity at the edge or vane tip of the impeller. Equations are provided for power and efficiency related to May 16, 2013 · Thus, the Bell & Gossett Series 1510 pump curve shown here tells us that this pump with an 8. Nov 16, 2021 · Explore NRCS pump curves and related resources for water management and conservation. 5 kW, 3460 rpm. They are provided by pump manufacturer. Hopefully the information 9. Find a Part Kit Apr 26, 2023 · How to read a pump curve correctly to understand the terms used, its function, the variables displayed, and ensure a pump’s efficiency and performance. It is important to understand how the pump will interact with the system it is used in over a range of operating conditions. Achiev-ing this mass flowrate requires a pump that can generate a pressure high enough to overcome the hydraulic resistance of the system of pipes, valves, and so z 1150 RPM PUMP CURVES 7-21-78 CENTRIFUGAL PUMP SERIES 22 20 1150 R. In certain cases rough approximations can be made without this data, but as with any model, good results require good data that reflect the actual characteristics. 4 shows four typical suction systems with the NPSH Available formulas applicable Review pump performance curves in an instant Are you looking for a way to quickly verify that the pump you’ve chosen can meet your duty points? Or have your pump curve explained? Grundfos Product Center makes accessing and reading pump curves easier than ever, providing a simple display of system characteristics to help you understand your pump’s efficiency and verify your pump choice Heavy Duty, Rugged Baseplate The Bell & Gossett fabricated heavy duty baseplate is supplied as standard on every Series 1510 pump. The pump can, in principle, operate at any point whatsoever along the Q-H curve. A pump is to be used to transfer water from a supply reservoir to a holding reservoir at the top of a hill. It's an essential skill for anyone involved in specifying any pump. Their shorter, steeper curves provide better efficiencies on low flows and superior accuracy when used with control devices. Other training publications as well as the Bell & Gossett design tools described in this booklet including the System Syzer, analog and digital versions, and ESP Plus are all available from your local Bell & Gossett representative Apr 26, 2023 · What Is a Pump Performance Curve Chart? A pump performance curve chart is a graphical representation to illustrate a pump's performance capabilities across a rated flow and pressure range at various operating points. Apr 26, 2023 · What Is a Pump Performance Curve Chart? A pump performance curve chart is a graphical representation to illustrate a pump's performance capabilities across a rated flow and pressure range at various operating points. If we study the Suction and the Discharge lines, we will have our p Nov 10, 2016 · Best Efficiency Point – BEP is the point on a pump performance curve corresponding to the flow rate with the highest possible efficiency. The 700 and 1700 series pumps are non-volute and designed for lower capacities. It’s clear by looking at the curve that a pump’s efficiency varies with flow and head. The product’s Flygt PL and LL pump introduction Flygt submersible vertically installed axial flow pumps (PL) and mixed flow pumps (LL) have been used in a wide variety of storm water stations and sewage treatment plants, land drainage and irriga-tion systems, fish farms and power plants, shipyards, amusement parks and many other applications where large volumes of water have to be pumped. 3. When a single pump is operating, the system curve shows the pump will flow much more than 50% of the design flow rate. The pump-system curve consist of static head, pressure head and head loss. Pump performance curves help to predict variation of differential head, as the flow is changed. Mar 11, 2025 · A centrifugal pump curve is a graphical representation of a pump’s performance characteristics. To keep the calculator's input relatively simple, we only require you to enter two points on the pump curve - flow at zero head and head at zero flow. CURVES REPRESENT SINGLE STAGE PERFORMANCE BASED ON TEST OF MULTI-STAGE BOWL ASSEMBLY. In order to understand how a fluid system containing a centrifugal pump operates, it is necessary to understand the head and flow relationships for a centrifugal pump. For the hydraulic equipment manufacturer, this curve is the most intuitive guide, showing how […] Jan 12, 2015 · If you find yourself somewhat mystified by pump curves and performance charts, or if you need to train someone about hydraulic efficiency, here’s a brief primer to get you started. The axial impeller pump has an almost straight downward characteristic curve. To do that, an engineer would refer to a pumps composite curve. The pump is so named because it has two gears that are side-by-side or external to each other. GALLONS PER MINUTE 100 CAPACITY IN CUBIC METERS/HR CENTRIFUGAL SERIES 20 Impellers May 22, 2024 · Aspen Hysys Use and Tips: • Aspen Hysys Use and Tips PUMP CURVE Centrifugal pumps are widely used in the chemical process industry for their ability to handle a wide range of fluids and Jun 10, 2025 · Learn the basics of pump curves, their importance in fluid mechanics, and how to interpret them for optimal pump performance. Apr 30, 2019 · Engineers and designers today rely on state of the art computer programs to design their Fire Protection Systems. Dec 20, 2024 · Learn how to interpret a pump performance curve to select the right pump and maximize efficiency in your hydraulic systems and applications. The pump characteristic is normally described graphically by the manufacturer as the pump performance curve. Other training publications as well as the Bell & Gossett design tools described in this booklet including the System Syzer®, analog and digital versions, and ESP Plus are all available from your local Bell & Gossett representative Learn how pump curves work, optimize performance, and choose the right pump for your needs. Barney's Pumps, through Solid Edge, offers 3D drawing support for basic and custom systems. Gain insights into pump curves, their types, key parameters, and how they affect performance for effective analysis and evaluation. A positive displacement pump has chambers that repeatedly fill (suction) and empty (discharge) to displace (move) fluid, as depicted in Figure 1. While troubleshooting a pump, two of the three that can be measured and known are speed (tachometer reading of the pump) and the total dynamic head (suction and discharge gauge readings). The semi-axial impeller pump has a characteristic curve with an always descending and tighter trend than that of a pump with a radial impeller. See The pump curve is a graphical representation of the performance of a pump formulated on a test performed by the manufacturer. By Mike Allen I explained in two earlier columns how centrifugal pumps, specifically vertical turbine pumps, converted mechanical energy into hydraulic energy via the pump’s application of rotodynamic force to a fluid, in this case water. Department of Energy introduced Pump Energy Conservation Standards in January of 2016. In this module we will take a deep dive into pump curves and how to read and understand pump performance curves. Jul 25, 2022 · These curves show the pump head, efficiency, power, and NPSHr values for varying flow rates plus another variable, such as impeller trim or pump speed. Being able to read a pump curve enables you to… Unitized The Durco Mark 3 Unitized Self-Priming pump is engineered to draw from liquid sources below ground level or from sources which have no positive pressure to naturally prime the pump. P. Centrifugal Pump Energy Eficiency Information The U. Four Quadrants of Operation To accurately model a pump undergoing reverse flow or speed, or pumps past the runout flow, test data for those regions must be available. Dec 17, 2011 · The NPSH curve is roughly a lazy "U," reaching a minimum value at a capacity Q about 40 percent of the best‑efficiency capacity. G PM/RPM/HP WAUKESHA PUMPS 100 RPM 400 RPM 50 PSI 100 PSI 150 PSI 200 Instructions for reading WCB's PD Pump Curves: with viscosity 0 and calculated pressure Oto get operating line ousing required GPM 9Find RPM ©Find WHP VHF' O Add: HP = VHF' + WI-IP NOTE: Waukesha Cherry-Burrell (WCB) curves are intended for use as an aid for preliminary selection of pumps by trained and qualified engineers Aug 7, 2025 · Pump curve not only serve as a guide for engineers when designing fluid transport solutions, but also provide information for users to perform preventive maintenance on pumps. Pumps add energy, or head gains, to the flow to counteract headlosses and hydraulic grade differences within the system. 1 (first curve) and Fig. Pump curves A pump curve is a graphical representation of how the system responds to changes in head and flow. Jun 2, 2023 · This article describes a real-life centrifugal pump design project, and explains how to read a centrifugal pump curve. Flow Curve, Efficiency Curve, Power Curve, NPSHR curve & Pump Family Curve. 3) 900 (213. In order to satisfy the pump manufacturer's requirements: P . Head is typically expressed in terms of feet and flow in terms of gallons per minute (gpm). Pumps in Serial - Head Added When two (or more) pumps are arranged in serial their resulting pump performance curve is obtained by adding their heads at the same flow rate as indicated in the figure below. Modern insights of pump performance and pump specific speed will be given to assess the effectiveness of the assumption of correlation. Understanding Centrifugal Pump Curves When selecting a centrifugal pump, one should match the performance of the pump to that needed by the system. pumps, ranges 72, 74 and 78, are a range of free-flow channel impeller pumps specifically designed for pumping sewage and wastewater in a wide range of municipal and industrial applications. water) have little resistance to flow, while higher viscosity products have a greater resistance to flow. Apr 25, 2020 · Mechanical pumps Pump Chart Basics Explained Learn about pump curves, how to read them and what the different lines mean. These extra lines are (1) RPM (Revolutions Per Minute), which illustrates perform-ance at various speeds; (2) horsepower at various RPMs is also indicated and on Curve “B” is marked 1 to 6 BHP. 3-6 TABLE OF CONTENTS (Continued) HVAC PUMPS PATTERSON PUMP COMPANY Chapter 4 Physical Design of HVAC Pumps, Motors, and Drives This section of the B&G Engineering Design Manual covers centrifugal pump performance curve and system curve data. What actually predicts if it will be reliable and efficient in your application is its performance curve. May 1, 2017 · These pump curves can be easily understood when seen on a graph. For example, some pumps must be submerged, but others are capable of sucking water up to the pump. The fire pump unit shall include the following accessories, as required by NFPA standards (depending on the conditions under which the pumps are to The driver shall be a vertical, open drip-proof (or T. They are available in a wide range of configurations, including mechanically sealed, dynamically sealed, sealless magnetically driven, low-flow, self-priming and recessed impeller. 4) 300 (61. Knowing the Apr 19, 2023 · Learn how to read and interpret centrifugal pump performance curves to optimize efficiency, reliability, and system performance. In this video, James describes the elements of a performance curves and how to read What follows is an example of a digitized pump curve I created using Plot Digitizer and a spreadsheet template that I developed that makes it pretty easy to take the CSV files you get from Plot May 4, 2022 · Understand how to configure pumps in parallel or series to meet variable flow requirements and optimize system performance. All B&G pump test curves are plotted from performance data obtained by using standard production pumps selected at random. 0) 200 (30. Performance Curve At some point in the pump selection process, the impeller diameter is selected. Centrifugal Pumps Centrifugal pumps are one of the most common components found in fluid systems. What is a Centrifugal Pump? Common Applications Pump Design Steps Design Criteria Design Flow Rates Number of Pumps and Speed Control Process Flow Diagram Intake Design and NPSH Discharge Design System Curves Pump Curves and Selection Hydraulic Profile Helpful References Examination Watch this quick video on How to Read Pump Curves and understanding all the various curves and lines on a pump chart like Impeller Size, Efficiency, Horsepow Download scientific diagram | Pump performance curves with and without VFD from publication: Modeling variable-speed pump operations for target hydraulic characteristics | Efficient and robust The pump curve describes how a centrifugal pump performs in isolation from plant equipment. Draw the system curve. To determine the performance data at a particular point Nov 21, 2024 · Do you understand how to read a pump curve? The experts at BFS Industries walk you through reading a pump curve, complete with a sample pump curve chart and equations. Head loss is the resistance in pipes, valves, heat exchangers etc. The resultant Q-H curve for pumps operated in parallel is obtained by adding the actual volume flows for each pump at the system head at a specific flow. PREFACE AND ACKNOWLEDGEMENTS This guide is the result of co-operation between three different industries whose goal was to produce a document that would clearly define; in simple terms the information required when planning to use an electronic Variable Speed Driven Pumping System. 3 This paper explores this concern. 9) 400 (91. M. The mass flowrate of the system is established on the process flow diagram by the mass balance. Apr 28, 2025 · How to Read a Pump Curve – A Must-Know Skill for Every Engineer One of the most essential tools in pump selection is the pump performance curve. Being able to read a pump curve is critical when trying to diagnose a pump problem. Pump manufacturers must sell only compliant products after January 27, 2020. This article is a note or manual for mechanical engineer where work as rotating engineer or where concern to apply reciprocating pump into the system. Nov 6, 2023 · Learn how to read and interpret pump curves for centrifugal pumps to choose the right pump for your application. This knowledge will enable you to make informed decisions when selecting and specifying variable speed pumps along with their drivers and controls in order to optimize performance and reduce power consumption. Each pump has its own pump performance curve, which varies from pump to pump. Figure 1 is a simplified diagram of a typical centrifugal pump that shows the relative locations of the pump suction, impeller, volute, and discharge. Pump manufacturer’s curves normally provide this informat es. The characteristic curves of centrifugal pumps plot the course of the following parameters against flow rate (Q): head (H) (see H/Q curve), power input (P), pump efficiency (η) and NPSHR, i. How it operates in practice is determined by the resistance of the system it is installed in: restrictions in the pipework and downstream frictional losses as well as static inlet or outlet pressures. It is key to positive pump sizing and operation because it affects slip within the pump as well as the pressure required to overcome frictional loss in the lines. Figure 9. This whitepaper will review typical pump curves provided by the manufacturer, the relationship of these curves to the system in which the pump is installed and the differences between the constant speed and variable speed operation. The intersection of the two curves defines the operating point of both pump and process. This is a method that may be unfamiliar to some since most positive displacement pump performance curves already include hp lines. What is a Positive Displacement Pump? Pumps are mechanical devices that move fluids. S . The pump curve typically has head (energy) added to the water on the vertical axis and the flow rate on the horizontal axis. 2 is a typical example of a family curve. Another classic type is the peristaltic pump (which mirrors the action in animal intestines) comprised of a flexible tube that is squeezed by the action of a mechanical device that acts to move the liquid (or In this section you find a guide to selecting and comparing replacement data of an installed pump in order to replace the pump with a more efficient Grundfos pump. Head Vs. Efficiency Curve Power Consumption Curve Family Curve: It is the curve that includes different functional parameters (Shutoff head, efficiency, impeller diameter, NPSHR within a single curve) Please refer to the attached pump performance curves in Fig. To determine compressed air requirements and proper size for a Yamada air-operated double diaphragm pump, two elements of information are required: Required Flow Rate (GPM) Total Dynamic Head (TDH) As an example in the above curve, consider an NDP-40 Series pump performance curve with rubber diaphragms, pumping 80 GPM at 50-ft TDH. Low viscosity products (e. The Cordier diagram (Figure 1) assigns different impeller designs to their specific speed and thus indicates the peak efficiency that can be obtained. It allows users to evaluate how a pump will perform under different conditions of flow and pressure. This product as sold in U. A sump pump performance curve is a charted diagram that shows how much water a sump pump can pump at a specified vertical height. BOX 17872 1 /1 PERFORMANCE RANDHART 1457 CURVE TEL: (011) 617-0700 REFERENCE E-MAIL: pumpsales@warman. Turbomachines can operate at any flow or speed, positive or May 16, 2023 · A pump performance curve chart is a graphical representation to illustrate a pump’s performance capabilities across a rated flow and pressure range at various operating points. ALBERTON 1449 PUMP P. It is a simple straight line. It would be fortunate indeed if this operating point is the one actually specified for the process. If you want a thorough understanding of centrifugal pump curves, please read this article. First of all, in order to understand a pump curve, you need to know your system’s characteristics. P . Read more at SimScale. What Is a Pump Curve? If you buy or use industrial or municipal pumps, you need to know how to read a pump curve. Jan 25, 2024 · A Pump curve chart is a graphical representation that illustrates the performance characteristics of a Pump. To The following diagrams show the Pump Theory and Design system. g. It should be noted that example curves used herein are illustrative only and manufacturers’ data should be consulted for specific information. This applied force or energy is quantitatively expressed in the May 28, 2020 · A pump performance curve has basically three values, two of which like any mathematical equation have to be known to find the third. Four quadrant pump curves The pump characteristic curve defined on the Pump Curve Page for a pump object is appropriate for normal pump operation (discharge and head both positive), but not for pump operation outside of the normal zone. co. What is a Centrifugal Pump? Common Applications Pump Design Steps Design Criteria Design Flow Rates Number of Pumps and Speed Control Process Flow Diagram Intake Design and NPSH Discharge Design System Curves Pump Curves and Selection Hydraulic Profile Helpful References Examination The pump characteristic curve is interesting when combined with the system characteristic curve. It is important to accurately characterize the system curve to select the correct pump for various operating conditions as the operating point of your system will be dependent on the intersection between the system curve and the pump curve. Pump sizing Pump sizing involves matching the flow and pressure rating of a pump with the flowrate and pressure required for the process. Grundfos 3” SQ Sizing Guide Curves and sizing information for all Grundfos SQ submersible pumps Contents INTRODUCTION Pump manufacturers provide pump performance curves (also known as “pump fl ow curves” or just “pump curves”) to assist users in the selection, testing, operation and maintenance of pumps. Explore Eddy Pump's resources now! Aug 7, 2023 · In pump engineering and fluid dynamics, performance curves serve as critical analytical tools. the NPSH required by the pump. The NPSH Required varies with speed and capacity within any particular p mp. Whether preparing for a certification exam or looking to refresh your knowledge of pump hydraulics, this week’s featured videos will teach you how to read pump curves, calculate system curves, and use these curves to select an ideal pump for your system. Learn how it impacts flow and pressure in your system. 1, Durco Mark 3 pumps incorporate many proven reliability- and performance-enhancing features. The motor shall be of such capacity that 115% of the full-load ampere Jun 24, 2023 · Pump Curves The performance of any pump is defined by a pump curve. SERIES A-C 2000 CLOSED COUPLE & FRAME MOUNTED CENTRIFUGAL PUMP PERFORMANCE CURVES – 60 HZ TABLE OF CONTENTS The Pump Curve The amount of water a pump delivers depends on the conditions under which it operates. With many pump specifications, you will often see a graph, with a curve or a series of curves depending on additional models, these are called pump curves. This Tech Brief examines how pump curves can provide data about a pump’s abili ty to produce flow against certain head, shows how to read a typical centrifugal pump curve, and provides information about pump efficiency and brake horsepower. GALLONS PER MINUTE 100 CAPACITY IN CUBIC METERS/HR CENTRIFUGAL SERIES 20 Impellers May 31, 2019 · Pump curves inform operators to select and run pumps at optimal efficiency for their system. capacity, input power vs. e. Energy Conversion in a Centrifugal Pump Fluid entering a centrifugal pump is immediately directed to the low pressure area at the Jun 12, 2022 · A fluid flow system is identified with a chart named the System Curve. 100 200 300 400 600 700 CAPACITY IN U. This article explains centrifugal pump curves and discusses how to read and use them. Oct 25, 2021 · FloRight Pump & Controls shows you how to read a vertical turbine pump curve chart. It is the excess pressure of the liquid in feet absolute over its vapor pressure as it arrives at the pump suct on. The system characteristics show This instruction manual covers several different pump models. The vanes of the rotating impeller impart a radial and rotary motion to the liquid, forcing it to the outer periphery of the pump casing where Aug 3, 2017 · Looking at a multistage pump curve is enough to make your eyes cross. F. It provides flexibility and breadth of pumping solutions in countless applications. required, which the pump manufacturer gives for a specific pump model, impeller diameter, speed and flow rate. Head * The core of the curve: as flow rate increases, head decreases. this section depicts curves for pump total head, efficiency, input power, and net positive suction head required (NPSHR) as a function of flow rate. MISSION Centrifugal Pump Curve Calculator Diameter (inches): Flow Rate (GPM): Specific Gravity: The key thing to remember when reading a pump curve is that they are based upon the principle of plotting data using the x and y axis. 6a Parallel connected pumps. Reach out to us and find out more about reading a pump curve. Consider the Four Design Features For Extended Pump Performance In order to select a chemical process pump wisely, consideration must be given to design features that provide long-term reliable performance. Apr 29, 2025 · Conforming to ASME (ANSI) B73. Required NPSH or NPSHR for a given pum Lineshaft and Submersible Turbine Pump Curves 1000 RPM CURVES – 50 CYCLE PERFORMANCE Pumps are an integral part of many pressure systems. Read our guide! Xylem Water Solutions & Water Technology | Xylem US Learn about the pump schematic symbol, commonly used in electrical engineering diagrams, and how it represents a pump in a circuit. Understand flow rate, head, power consumption, efficiency, NPSH, and more. For smaller motors, reduce with: 3%. The characteristic curve's shape is primarily determined by the pump type (i. Contact our team now for vertical turbine pumps, repairs, and maintenance services. It provides details on their design, applications, maintenance features, and worldwide experience. , thus, head loss can be refereed to as the “resistance”. Jan 27, 2020 · An overview of the most common types of progressing cavity pumps, their design variations and considerations for making an informed selection. In this article, we delve into three integral curves: the pressure-flow curve, the vacuum-flow curve, and the flow-current curve. There are more lines on this curve than on gasoline engine-driven pump curves. Combining the pump performance curve with the system curve will help show where the system will operate. May 6, 2024 · Explore parallel pumping in HVAC systems and learn to create parallel pump curves for optimized performance. The pumps are suitable for applications like reverse osmosis, boiler feed, molten sulfur, and pulp and paper industries. This Cordier diagram allows a comparative study of all turbomachinery from low speed radial impellers via axial pumps to ship and air propellers. impeller, pump casing or specific speed. See Bell & Gossett product literature for more detailed, up to date information. A typical head capacity curve Feb 5, 2024 · Explore the variable speed pump curve, what is on it, and understand how it differs from a constant speed pump curve. Find out which pump is right for your needs. COMPONENTS DIAGRAM OUTLINE DIMENSIONS VIEW BROCHURE INDEX PUMP FRAME KW RATING 5 CLARKE STREET SOUTH. This article looks to end that confusion by providing the basics on how to read and use centrifugal pump curves. ) The gear pump is a precision machine with extremely tight In this webinar we will explore which parts of the curve apply in identical ways to both fixed and variable speed operation, and the important differences in their use. This handbook has been prepared in order to bring much of this information into a convenient and easy-to-use form. Lineshaft and Submersible Turbine Pump Curves 1800 RPM CURVES – 60 CYCLE PERFORMANCE Technical Data and Pump Fundamentals FOR GOULDS WATER TECHNOLOGY, RED JACKET SERIES AND CENTRIPRO Fluid Mechanics Example Problem to combine pumps in series and parallel. 10 are also usually given as a function of the volume rate of flow in a pump diagram. The diagram below shows a pump performance curve for a PD pump, with the operating range highlighted in red: For comparison, the following image shows the same positive displacement pump performance curve superimposed on top of a performance curve for a centrifugal pump. Pump curves and other product data in this bulletin are for illustration only. This results in the discharge of a known amount of fluid for each fill and empty cycle. The graphs can be presented 1 above the others, or Aug 22, 2025 · Understand the System Curve to select the right pump for your needs. But many engineers overlook how much valuable information it holds. CSI explains flow, head, efficiency, and what pump curves reveal about performance. * Helps match your system head A centrifugal pump selection guide curve is a graph that shows the total head, power, efficiency and net positive suction head where a 3 percent head loss o Interested in purchasing a Goulds Water turbine pumps, but not sure where to learn more? Browse our Goulds Water turbine pump catalog to find reliable information about Goulds Water turbine pumps! Nov 4, 2024 · Crane Engineering, a leading industrial pump distributor in WI, MN, and MI, explains how to read centrifugal pump curves for optimal system efficiency. , 50 Hz. A pump curve (blower curve for gases) is incorporated into the pump curve calculator to simulate systems containing a centrifugal pump or other pump that has a pump curve. Pump curves will typically also show the efficiency of the pump at various points along the pump curve, the All Bell & Gossett Centrifugal Pump products already comply with U. It is impossible for one operating Apr 21, 2022 · Watch the latest edition of the Centrifugal Pump Minute. 2 (second curve) below. The pump requires a minimum suction pressure head in order to function properly and avoid cavitation. With this in mind, the curves that can be plotted are head vs. ), ball bearing type, AC, induction, squirrel cage "P" face motor: wound for ____ volts, 3 phase, 60 (50) Hertz. In some pump types with integrated motor and perhaps also an integrated frequency converter, e. NPSHR vs Suction lift Showing Net Positive Suction Head Required (NPSHR) on a pump’s performance curve is the most accurate and universal method of showing the pump’s suction capability because NPSHR is valid for any liquid, provided the liquid vapour We’re a global team unified in a common purpose: creating innovative solutions to meet our world’s water needs. The guide focuses mainly on applications within the Industrial Sector, however the principles used will be 4 days ago · In hydraulic systems, gear pumps are reliable sources of power. Learn how to read a pump curve by reading our Know-How article today. Explore performance & flow data. Xylem Water Solutions & Water Technology | Xylem US In this section you find a guide to selecting and comparing replacement data of an installed pump in order to replace the pump with a more efficient Grundfos pump. Compliant products have Pump Energy Indexes (PEI) equal to or below 1. 1. Sep 14, 2012 · By Ron Astall, United Pumps Australia A look at Net Positive Suction Head Required (NPSHR) versus suction lift and self priming capability. Specific PEI and ER data is shown on each pump performance curve where applicable and on the pump nameplate. Jul 26, 2022 · A pump curve is a graphical representation of a pump’s performance. 5) 100 (24. capacity. Where the curves overlap Jan 15, 2020 · Learn how to read and interpret positive displacement (PD) pump curves to optimize pump selection for your fluid processing needs. . Most assembly, disassembly, and inspection procedures are the same for all the pumps. The pump must be designed for optimum shaft seal and bearing life to prevent the failure of these two primary causes of pump downtime. These programs come pre loaded with industry standard fire pump performance outputs and horse powers. Feb 8, 2023 · Pump Performance Curve are typically used for identifying or prediction of the changes in the process parameter flow, differential Head, efficiency, power Learn about five types of Centrifugal Pump curves. Use the Grundfos Product Center sizing tool to find the pump efficiency curve and pump performance curve. Information is plotted on an x-y graph where the x-axis is measured in units of flow and the y-axis is measured in units of head, power, and NPSHr. For smaller motors, reduce head (H) with: 3%. 6 Parallel pump operation Parallel pump operation For parallel pump operation, two or more pumps are connected in parallel. Purpose of This Manual. With the help of data obtained in main characteristic curves the constant efficiency curves are plotted. As the name suggests, how a pump will perform in terms of head and flow and it helps the engineer to select the proper pump for the particular system. The vertical and horizontal lines represent units of measure that illustrate that performance. Object movedObject moved to here. Responsibility for final impeller sizing remains with ITT Bell & Gossett. Developing new technologies that will improve the way water is used, conserved, and re-used in the future is central to our work. Mar 1, 2010 · Figure 3. The system characteristic curve is the response in head H (m) of the installation to a given liquid flowrate (Q m3/h). Understanding how to read a pump curve chart will help determine all possible operating points of a pump and allows the proper pump selection for a specific application. ) The pump curve is established by the manufacturer under carefully controlled test conditions. 1 and 10 Cooling water pump, rotational speed (see Closed-loop control), propeller blade pitch angle ARMSTRONG Series 4030 COMPOSITE CURVES Legend 4030 - 4030 - 3600 RPM (274. Select the right pump for your needs. 3 N . O. The vanes of the rotating impeller impart a radial and rotary motion to the liquid, forcing it to the outer periphery of the pump casing where Key:A: SP2607X10/ SP2670007X10 B: SP2605X7 C: SP2600X5 The basis for determining pumps power requirements in the technical manual and in the performance curves is to first determine the torque and then, knowing the speed, calculate the required horsepower. May 2, 2024 · Unlock the secrets of air diaphragm pump performance with our comprehensive guide! Learn how to decipher pump curves, optimize efficiency, and make informed decisions. Pump and system curve interaction is covered in ANSI/HI 14. Chris explains what a pump/performance curve is and how to interpret it. They also typically include the minimum impeller trim the pump is designed to work at.   Discreetly applied either below or above the pump performance and efficiency curves, this single plotted line is the key to avoiding cavitation. A pump curve displays a pump’s performance at specific flow rates and pressures, helping you determine the best pump configuration for your application. The 1050, 1150, 3400 and 3500 series pumps are volute high capacity pumps. Unless noted, the system Introduction Many engineers, consultants, sales people and technicians who work with air-powered diaphragm pumps have occasions to refer to various charts, tables, curves and other data which is scattered throughout various books and publications. How to read performance curves of an Air Operated Double Diaphragm pump. 4) 500 (1 21. A typical composite curve shows multiple trim sizes on the same graph, as pictured above. Jun 27, 2016 · In my last column ("Tips for Proper Pump Selection," Pumps & Systems, May 2016, read it here), I briefly mentioned "drooping pump curves" and stated that I would spend time in a future article discussing the subject. Download comprehensive progressive cavity pump performance curves & technical specifications for all of the pumps we sell and repair. The system characteristics show All the parts you need to keep your systems running perfectly. 5” impeller will deliver 600 gpm and a total head of 57 feet at 82% efficiency. Contact our Product Support for assistance at today. A system curve, here we focus on pump curves, is a graphical presentation of the Energy Equation. Fig. Normally, pump curves in data booklets only cover the pump part. The faster the impeller revolves or the bigger the impeller is, the higher will the velocity of the liquid energy transferred to the liquid be. Because of this, power consumption, the P2-value, listed in data booklets, only covers power going into the pump (see figure 1). We move, treat, analyze, and return water to the environment, and we help people use water eficiently, in their homes, buildings, factories and farms Download scientific diagram | Gear pump performance curve from publication: Vibration Signature of Gear Pump of Missing One and Two Teeth | Gears and Teeth | ResearchGate, the professional network A characteristic curves selection chart is the graphic representation of several characteristic curves which shows the effect of various changing parameters on machines in one diagram. Pump inlet, dia. Long gone are the days of drafting tables, rulers and pencils. 4) 700 (152. Jul 19, 2024 · Pump Curves Tutorial A pump performance curve is a graphical representation of the head generated by a specific pump model at rates of flow from zero to maximum at a given operating speed. In general, the system flow rate will be where the pump curve intersects the system curve. : 90 mm 51 mm, DN 50 38 DN40 Performance data refer to waterat 20 2. Jan 31, 2024 · Pump Efficiency Curves: Beyond assessing a pump’s capability, we consult pump curves to gauge its efficiency. Click the thumbnails below or the left and right arrows on the diagrams to navigate. This blog post will teach you to how to read an industrial pump curve. It provides information about how a Pump operates under different conditions, helping users to understand the Pump’s efficiency and capabilities. is regulated by 10 CFR Parts 429 and 431. Energy Curve Brake Horse power is plotted against the Flow to obtain energy curve in a centrifugal pump curve. Generally, the pump performance curve is provided by the manufacturer. For an existing pump, the diameter of the impeller is known. Before we begin you may want to review the definition of parallel pumps in the link above. This curved line represents the performance of a specific pump. The pressure the pump needs to develop to push the water through the delivery system (pipes, hoses, elevation changes of the water, nozzles) determines the flow rate the pump will deliver. Pump curve basics. Draw the Pump Curve for 1 pump, 2 pumps in series, and 2 pumps in parallel. However, where there are differences, these differences will be noted within the manual. asynchr. SIZE B* 15 ALRODE. This blog introduces the basic graph, including feet of head, capacity, NPSHr, and more. System Curve Application Real-world applications tend to consider a range or family of system curves. The design, materials, and workmanship incorporated in the construction of the Goulds Water Technology VIT pumps makes them capable of giving long, trouble Oct 29, 2024 · Understanding the manufacturer's pump chart is vital to getting the most from a sump pump. The curve shown above is an example. crkllp e72c9s trpn t0icpdl 1nm zdmpe h4hqac 0wfsyix jdfyh mrftg