January 15, 2024
Impeller Types in Centrifugal Pumps The impeller's basic function is to transfer the mechanical energy coming from the motor via the shaft to the fluid passing through it, imparting a certain pressure and flow to the liquid or gas. Given the diversity of raw materials used in production, it is essential to transfer liquids with very different characteristics from one another. As these liquids and their properties change, the type of impeller used in the pump must also change …
January 15, 2024
CONNECTION TYPES AND CHARACTERISTICS OF ELECTRIC MOTORS In three-phase asynchronous motors, after the stator windings are made, six terminals are generally brought out to the terminal box outside the motor for connection to the mains. These are the winding input and output terminals. Depending on how these terminals are connected, it is possible to start (i.e. initially energize) the motor in different ways. Direct-On-Line Starting (DOL) As the name suggests, this method invo…
January 15, 2024
A ball valve consists of a hollow rotating ball placed in the middle of a stem. Thanks to the rotational movement of the stem, this ball rotates 90° degrees within the valve body, providing flow control. Ball valves are reliable and robust. Even if they remain in the same position for a long time, they can safely perform their function. They also allow frequent changes in stem position. However, their intended use is generally either fully open or fully closed. Outside the fu…
January 15, 2024
Chemical pumps are used in the petrochemical, food processing and chemical industries, as well as in off-site refinery applications and high-temperature heating systems. They pump hot, cold, aggressive, volatile, explosive, toxic, contaminated and especially high-value fluids. For this reason, parts in contact with the fluid are made of corrosion-resistant metallic and non-metallic materials, or are protected with durable rubber, plastic or enamel coatings. In this pump, the …
January 15, 2024
In industrial plants, many pieces of equipment or production processes require heating. Plastics-based manufacturing, the processing of wood and forest products, composite processes, chemical processes and similar sectors are areas where this need is high. For heat transfer, thermal (heat transfer) oils suitable for use between 200°C and 350°C are most commonly used, while for lower temperatures, hot water can also be used as the fluid. This oil is heated within a closed syst…
January 15, 2024
Hygienic pumps are generally used in the food, pharmaceutical and cosmetics sectors, where human health is most critical. Equipment used in these sectors must meet certain standards in order to protect human health. Some of these standards are 3-A, the European Hygienic Engineering and Design Group (EHEDG), and the FDA (Food and Drug Administration). The most important point in hygienic pumps is surface smoothness. Older literature accepted a surface roughness value of 3.2 μm…
January 15, 2024
In short, a booster (hydrophore) set is an assembly of equipment that pressurizes water and delivers it to the required point in situations where mains pressure is insufficient. Booster sets are widely used today in almost all residences, high-rise buildings and even industrial facilities. A booster set consists of equipment such as pump-motor units (one, or more depending on pressure requirements), a control panel, valves, pressure gauges and an expansion tank. In other word…
January 15, 2024
Unlike a ball valve, a globe valve operates on the principle of a stem that moves up and down, with a plug (also called a disc or plug) at its end, to regulate the fluid flowing through the valve. Globe valves are generally suitable for use as control valves. While ball valves operate parallel to the flow direction, globe valves operate perpendicular to it. Globe valves are suitable for use as control valves, and their operating principle — perpendicular to the flow — makes t…
January 15, 2024
The basic function of a dosing pump is to transfer a liquid or gas of predetermined volume over a specific time interval. Today it is frequently used in both industrial and domestic settings. In industry it can be used for boiler feed water conditioning, in food production lines, and for transferring precipitation liquids in treatment plants, while in domestic settings, for example, dosing pumps that dispense chlorine can be used for cleaning purposes in a hotel swimming pool…
January 15, 2024
Wastewater pumps typically convey heavily contaminated water containing solid particles of various organic, inorganic and mineral origin. Non-self-priming, single-stage pumps are generally preferred. They are fully submerged in the fluid being handled. Wear-resistant mechanical seals are used for sealing. Typical applications are the food processing, construction, pulp and paper, sugar and metal industries (e.g. metal electrolysis), as well as the mining and water extraction …
