ALLWEILER Centrifugal pump manufacturers are one of the more common products in our daily use of centrifugal pumps. They are widely used in various fields of industry. They use the centrifugal force generated by the rotation of the impeller to operate. However, the types of equipment on the market are complex and the specifications are different. What should we pay attention to when purchasing?

Select the type and model of the pump: first confirm the type of pump according to the nature of the liquid delivered and the operating conditions, then select the appropriate model from the pump samples or product catalogs according to the confirmed flow Qe and pressure head He, and the flow and pressure head supplied by the selected pump may not be completely consistent with the flow Qe and pressure head He required by the pipeline, In addition, considering that there is some margin for the change of operating conditions, the flow and pressure head of the selected pump can be slightly larger, but under this condition, the power of the corresponding pump should be relatively high, that is, the coordinate position of the point (Qe, He) should lie below the H-Q curve corresponding to the high power range of the pump.

Confirm the flow and pressure head of the delivery system: the delivery volume of liquid is generally specified by the production task. If the flow fluctuates within the characteristic range, the centrifugal pump should be selected according to the large flow. According to the pipeline arrangement of the transportation system, calculate the pressure head required by the pipeline under large flow

Confirm the type according to the nature of the liquid to be transported and the operating conditions, and confirm the pump model according to the flow (generally determined by the production task) and the required pressure head in the pipeline. If the viscosity and density of the liquid to be transported differ greatly from that of water, check the pump's characteristic parameters: flow, pressure head and shaft power.

There may be several types of pumps that can meet the requirements of operating in a good range at the same time. We can separately confirm the operating points of each pump, compare the power on the operating points, and select the best one. In addition, we should also consider the technical level and quality problems of the centrifugal pump manufacturer, and also combine our own actual needs. Pay attention to these points to find satisfactory equipment