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Chemical dosing metering pumps can be used to transport a wide range of liquids, especially those that are corrosive. As a special type of positive displacement pump, they have continued to evolve with the advancement of modern industry and technology, meeting the demands of production processes. For mechanical devices such as pumps, it is very important to be able to regulate flow rates, and the same is true for chemical dosing metering pumps. So, how do these pumps regulate flow rates during transportation? What are the methods used for adjusting flow rates? There are three common methods for adjusting the flow rate of chemical dosing pumps. The first method involves installing a bypass circuit in the output pipeline system, then adjusting the bypass valve and controlling the amount of flow that returns, thereby regulating the output flow rate of the system. However, using this method to adjust the flow rate results in increased energy loss, which is a significant drawback of this approach. The second method involves adjusting the flow rate by changing the pump’s speed; this approach requires that the average flow rate of the pump be proportional to its speed, and reciprocating pumps possess exactly this characteristic, so the flow rate can be adjusted in this way ； Furthermore, the method of adjusting flow rate by changing the rotational speed requires speed control of the device or motor. However, at low flow rates, the number of strokes is too small, resulting in an excessively long drainage time, which is not acceptable for certain chemical reactions; therefore, extra care is needed. The third method is a relatively common one; it involves adjusting the stroke length of the pump piston (plunger) in order to control the flow rate. One of its major advantages is its high measurement accuracy, and it can still meet linear requirements even at low flow rates, making it a quite effective method. SUCMC offers dosing metering pumps as well as accessories such as pulse dampers. For more information, please visit http://www.sucmc.com and http://www.sucmc.cn