JAES is a company specialised in the industrial components sector, and offers full assistance for technicians and maintenance technicians of large installations. Follow us on our social networks: facebook: / jaescompany linkedin: / jaescompany Instagram: https://instagram.com/jaes_company?ig... In this video we will learn how to read a centrifugal pump data plate, and we will see what formulas we find to make the calculations: Revolutions per Minute (that is, the number of turns of the pump), flow rate, power, pressure and impeller diameter. We will also see what happens when we try to modify some of these parameters, and what formulas we have to use to determine what the new performance of our pump will be. Each centrifugal pump is equipped with an identification plate like this one, which will show an inventory of the main details concerning its performance. However, over time, these plates can become damaged or worn, often making important technical data indecipherable. JAES, thanks to its technical know-how, is a reference partner for some of the largest industrial pump manufacturers. The plates serve primarily to identify the manufacturer and to detail a series of information about the product such as: the pump series, the dimensions, the model, and the serial number, i.e. an unambiguous sequence of numbers and letters, assigned gradually or sequentially to the pump in order to be able to identify it without error. The plates also serve to determine the product's performance such as the maximum working pressure, as well as many other parameters that we will see shortly. As we learned in our previous video, the basic principle of centrifugal pumps is to drive certain volumes of liquid from a low-pressure area to a high-pressure area. In this way, atmospheric pressure pushes the liquid thanks to the vacuum created inside the rotating element of the pump: the impeller, which makes the water flow from the suction pipe to the discharge pipe. The pump's performance can be conditioned by the diameter of the impeller and the revolutions per minute. Revolutions per Minute (from the English Revolution Per Minute) illustrate a unit of measurement on the rotation speed. That is, the number of turns or cycles completed in one minute by the rotating element of the pump: the impeller, when turning, converts all the mechanical energy that originates in the motor, into kinetic energy and subsequently into pressure energy. On the other hand, the FLOW RATE represents the volume of liquid that a pump can move within a certain unit of time. Normally, the flow rate is usually expressed in cubic meters per hour, liters per minute, or liters per second. On the other hand, if we refer to the imperial system, then the flow rate is expressed in gallons per minute, as we can also see on our plate. We can define in a very simple way the PRESSURE as the capacity that a pump can have to raise to a certain height an exact quantity of cubic meters of liquid with respect to the height at which it was sucked. This value is also linked to the revolutions per minute depending on whether they increase or decrease. On the other hand, POWER is defined as the work that the pump must perform to move a density of liquid in a unit of time. The power required by the pump will depend on a series of factors, such as the motor to which it is coupled. Let's now try to modify these parameters and calculate the results. It should be remembered that these calculations will only give us theoretical values. In fact, it is possible that the actual performance could deviate slightly from these results. The first value we are going to calculate is the revolutions per minute of the pump. What value should the RPM have if we want to modify the flow rate from 78 to 64.9 liters per second? The new RPM value is obtained by multiplying the original RPM by the result of dividing the modified flow rate value by its original value. If we follow these calculations, let's cancel the liters per second from this division to find this percentage, which, multiplied by the original RPM value, will result in 1500 rpm, that is, the speed of rotation that the impeller has to reach to maintain the new flow rate. If we were to use the imperial system, we would have to convert the liters per second into gallons per minute. Now, let's calculate the new FLOW RATE, taking into account that we would like to change the RPM from the original 1800 to the modified 1500. To do this, we will have to use this formula, in which...