The main metering pump selection should consider the following three levels: working pressure: When the metering pump is selected, its additional working pressure should exceed the required practical activities, which is generally higher than the operating scale in the middle of 10% to 20%, and it is not considered to exceed this operating scale, because the high working pressure will produce power and energy waste and add the cost of metering pump machinery and equipment including operating costs.

Traffic volume: In fact, the same as the working pressure, the flow of the metering pump also needs to exceed or equal the flow required by the processing process, the application flow scale is 30% to 100% of the additional flow scale of the metering pump, this time the high precision of the metering pump, but fully consider the application of economic development, Zhongcheng pump factory believes that the practical flow of the selection of supplementary pumps should be 70% to 90% of the additional flow.

How to properly select the raw materials of the pump impeller: the selection of raw materials of the pump impeller is a very key part of the selection of the pump, because if the improper selection will produce material erosion and damage the flow component or cause material leakage and environmental pollution management system, it will not cause major safety accidents when it is not optimistic. Therefore, after determining the above two points, we also need to select the raw materials of the over-current part according to the characteristics of the over-current medium.

In addition to the main selection of the above three levels, metering pump selection sometimes needs to take into account the selection of suitable precision levels, because the greater the precision level, the greater the capital investment. The operating temperature of the metering pump, the particle size distribution and viscosity of the substance need to be taken into account, and the detailed consultation is considered in the selection of the model in order to select the cost-effective, cost-effective and suitable metering pump.