Recently, with the widespread application of DC brushless water pumps in agriculture, kitchen and bathroom, home appliances and other fields, more and more people have begun to pay attention to the influence of the diameter of the water pump on its head and flow rate.

First of all, it should be clear that the diameter of the water pump does have a great influence on its head and flow rate. Generally speaking, the larger the diameter of the water pump, the greater its head and flow rate. This is because the head of the water pump is determined by the diameter and speed of its impeller, and the diameter of the impeller is directly related to the diameter of the water pump.

However, some people may think that the head and flow rate of the water pump can be adjusted by changing the diameter of the pipe. This is a common misunderstanding. In fact, the diameter of the pipe can only affect the flow rate of the water pump, but not its head.

Why is this so? This is because the head of the water pump is determined by the speed of the impeller and the shape of the blades, and these factors are related to the diameter of the water pump. When the diameter of the pipe is reduced, although the water exchange speed can be increased, the resistance will also increase due to the increase in flow rate, so that the head of the water pump will not change. Therefore, for application scenarios that require adjustment of the pump head and flow rate, it is very important to choose the appropriate caliber size. At the same time, it should also be noted that the smaller the caliber of the caliber pipe, the head of the pump cannot be changed, which needs to be paid attention to.

In short, with the widespread application of DC brushless water pumps, the selection of caliber size and the impact of caliber changes on head and flow rate also need to be paid attention to.