Metering pump classification and selection of applicable methods

1, how to choose the metering pump pressure? The choice of metering pump generally need to know the rated pressure, rated flow, type (diaphragm or plunger) and over-flow material. Generally speaking, the rated pressure of the metering pump refers to the outlet pressure. It is better to select the rated pressure to exceed 10% -20% of the actual working pressure during the selection. It can not only save resources, reduce costs, but also improve the actual usage of the metering pump Measurement accuracy. 2, how to choose the metering pump flow? Metering pump work, usually in the rated flow of 10% -90% of the use of relatively high measurement accuracy, so the choice of rated flow, the general selected flow should be equal to or slightly larger than the flow rate required for the process. 3, how to choose the type of metering pump? Metering pump according to the different forms of transmission, mainly divided into two types of plunger and diaphragm, plunger metering pump performance is relatively stable, relatively high accuracy, you can transport some of the relatively high viscosity media, diaphragm metering pump in addition to the front Advantages, there are some special advantages: Runtime completely leak-free, can transport special liquids (such as dangerous goods, corrosive liquids and so on.

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