Only after the pipe diameter increases, the water flow resistance will decrease, and the flow will increase, and the power consumption will also increase appropriately. The size of the liquid pressure is only related to the height of the head, and has nothing to do with the cross-sectional area of ​​the water pipe.

Therefore, in order to prevent the motor from overloading, it is generally required that the actual pumping head of the pump should not be less than 60% of the calibrated head. ②When the water inlet depth of the water inlet pipe is not enough, this will cause vortexes on the water surface around the water inlet pipe, which will affect the water inlet and reduce the water output. 8.) to reduce the flow and prevent the motor from overloading. If there is dirt such as mud and sand at the bottom of the pool, and the distance between the water inlet and the bottom of the pool is less than 1. If the outlet is above the normal water level of the outlet pool, although the pump lift is increased,

the flow rate is reduced. 2. There are many elbows on the inlet pipe of the pipeline centrifugal pump If more elbows are used on the inlet pipe, it will increase the local water flow resistance. Some operators think that blocking the water outlet and forcibly reducing the flow will increase the motor load. Otherwise, the air will gather, the water output will be reduced or the water will not be able to be pumped, and there will be impact noises.

But as long as Submersible Drainage Pumps Manufacturers is within the rated head range, the pump can work normally no matter how the pipe diameter is increased, and it can also reduce pipeline losses and improve pump efficiency. If installed in this way, the valve cannot close by itself, causing water leakage. The outlet pipe of a regular high-power centrifugal pump drainage and irrigation unit is equipped with a gate valve. 3. When installing the water inlet pipe, the horizontal section is horizontal or upward. In order to reduce the motor load when the unit starts, the gate valve should be closed first and then gradually opened after the motor starts. The smaller the pipe diameter, the greater the resistance, and the greater the loss head, which leads to a decrease in pump efficiency