There are many types of pumps with different technologies used for the transfer, dosing and circulation of all types of fluid in industrial processes and treatment applications. Selecting and using the right pump according to the characteristics of the process and the fluid affects the operating costs positively. The correct pump operation ensures trouble-free production, optimizes energy costs and reduces the time and costs involved in servicing, maintenance and spare parts.
What is Pump Requested for
Since pumps can be used in all areas of our lives, it is necessary to decide firstly why the pump is needed. Transfer, dosing, circulation, pressurization, whichever one of the options for our purpose from the beginning of the selection criteria narrowed and directed towards the right. For example, in the case of a chemical dosage, we will start from the right point for selection by referring to the dosing pump alternatives, if there is any need for chemical transfer between tanks there are various transfer pump alternatives, if the application is for a fixed or mobile use , you have to look accordingly for the appropriate pump types.
Determine Fluid Properties
In order to make the right pump investment, the properties of the fluid to be transferred should be determined. These parameters are density (gr / cm3), viscosity (cP), pH of the chemical, the percentage concentration of the chemical, if there is any solid particle inside the particle size should be considered and temperature value is also another important point. According to these parameters, the suitability of the pump components which will come into contact with the fluid from the Chemical Resistance reference tables will be checked.
Process Values ??Should Be Revealed
The suction and discharge conditions of the pump are most important points to be considered for our pump system investment. The question of whether the fluid is flooding to pump pump or self priming is needed or not is important for determining the pipe line details and for the the type of pump. If self priming is required, additional accessories can be planned to prevent the pump from running dry. The relevant conditions must also be set for the outlet line of the pump. If there is a pre-installed piping, the performance values ??should be calculated according to this installation.
What are Performance Values?
The requirements for the fluid in which the pump will be used should be determined. Our capacity should be determined with the values ??like m3 / hour, lt / min and the future requirements should be determined and the pressure at the outlet of the pump should be determined by the values ??such as mbar and meter. If pressure value cannot be determined, calculation should be made by presenting fluid properties by using pipelines or diameters. If there is no flooding or pressure loading, it will be necessary to review the pressure values ??on the suction line of the pump.
Operating Period of Pump
This criterion is important for correct pump investment. If we are looking for a pump that will run on a 7 day - 24 hour basis, we are talking about a heavy-duty process pump. But if we need a product that will work for a short period of time at certain times of the day or week, different and economic alternatives can be evaluated. For example, continuous operation in the selection of peristaltic pumps can be selected at speeds of 10-15 cycles / minute, 2 hours of operation and 1 hour stop working in the case of 50-60 cycles / min, only 1-2 hours a day to work for a period of 90-100 r / min Speed ??can be selected.
The pumps can be powered by electric, compressed air, hydraulic pressure, diesel engine or vehicle shaft PTO . If possible alternatives of the facility or a mobile/portable pump will be used, the most suitable drive alternative should be selected by evaluating the existing facilities. The determination of the power for this selected alternative motor will be primarily from the pump characteristic curves, followed by fluid and pipe line characteristics.
The pump to be used will operate at constant performance values or if there will be a capacity adjustment according to the process values. If the capacity changes will be in question, this process should be handled manually or with an external signal from the automation system and the pump control mechanism should be designed to be connected to the drive motor or by external sources.
Choosing accessories is important
Depending on the process conditions and the types of pumps, there are many accessories and safety equipment options that can be used on both the pump and the suction and discharge lines. It is not always necessary to use these options all the time, but some alternatives can be life-saving. For example, if the pump is idle, the dry run prevention system, if there is a risk of high pressure in the discharge line, high pressure prevention system or pressure relief system, if a stable flow is desired, but the selected pump type is a pulsed model, the pulse damper should be used.
Necessary in installation
In the installed pump system, cut-off valves must be installed on suction and discharge lines in order to ensure smooth maintenance and intervention. In the case of long pipelines, it is important to use a vibration dampener / compensator or flexible connection in all situations. In addition, the use of pressure gauges or sensors in the suction and discharge lines to monitor the system performance allows observation and intervention in any adverse situation. Where the pump is to be installed, a suitable area for maintenance should be planned.
While no certification is required for selected pumps in standard applications, ATEX norms and Ex-Proof properties are sought in applications in some sectors due to the characteristics of the media or fluid. This requirement is essential for explosive and flammable applications. In food, cosmetic and pharmaceutical sectors, 3A Sanitary and FDA certifications, which are international certifications, are required according to hygienic standards and the related pumps should be produced and certified to meet these norms.
Company to be Supplied
As with all products in our lives, one of the most important issues in the selection and purchase of the pump for our facility is the supplier company. It is important to be able to work with a team that can provide engineering services that can meet the needs of spare parts and service, which will occur during and after the use of the pump from the determination of the process conditions, selection of the pump after supply. In addition to all the criteria mentioned above, the choice of the supplier company is very important and the subject must be carefully evaluated in order to make the investment correct and to have a long life. We as Sisdoz are ready to help and serve you for all your pumping needs.
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