When purchasing the metering pump, many buyers do not know how to choose the appropriate metering pump, metering pump in the choice according to their own circumstances, we are going to talk about which to choose the most appropriate metering pump.

First, determine the pressure:

The actual maximum pressure selected metering pump rated pressure slightly higher than the required, generally higher than the 10 to 20%. Do not choose too high, too high pressure will waste energy, increase equipment investment and operating costs.

Two, determine the flow:

The flow rate of the selected metering pump should be equal to or slightly larger than that required by the process. Metering pump flow range of use in the measurement pump rated flow range of 30 to 100% is better, at this time the metering pump repeated reproduction accuracy is high. Considering the economic and practical, it is recommended that the actual flow of metering pump should be chosen as 70 ~ 90% of the rated flow of the metering pump.

Three. Determine the material of pump head (Ye Liduan):

The specific type of metering pump is determined, according to the property flow of medium selection flow of the material, this step is very important, if the choice is undeserved, will cause damage to corrosive medium flow components or medium leakage pollution system. Serious accidents may also occur.

Other aspects: in the choice of metering pumps, but also need to consider the accuracy of the required metering pump level, the higher the accuracy level, the greater the investment. The general working temperature of the metering pump is between - 30~100 degrees Celsius, and the temperature range of the special metering pump is wider (such as the high temperature liquid metering pump with heat jacketed jacket, and the conveying temperature can reach 500 degrees Celsius). For the medium granularity, the requirements should be less than 0.1mm, for medium larger than 0.1mm, the flow structure of the pump can be targeted to change to meet the needs. For the viscosity of the medium, the general should be 0 ~ 1000mm/s, the special metering pump can reach 6000 mm2/s, mechanical diaphragm metering pump flow is the maximum flow rate measured under the rated pressure of the calibration (Shi Wen water transport), if the pressure drops, the output flow than the calibration of high.