For the use of high head submersible pumps, we are mainly drainage, then for the amount of water and water flow control, I believe that many do not know what to understand, the next submersible pumps to control the flow of water in a variety of ways to regulate the description.

1. Variable speed regulation. Change the rotational speed of the submersible pump, can make the pump performance changes, so that the pump's operating point changes, this method is called variable speed mediation.

2. Diameter adjustment. After turning the impeller, the performance of the pump will change according to a certain law, so that the working point of the pump changes. We turn the impeller to change the working point of the water pump method, known as the diameter adjustment.

3. Variable angle adjustment. Change the installation angle of the blade can make the pump performance changes, so as to achieve the purpose of changing the point of the submersible pump. This way to change the operating point of the pump is called the variable angle adjustment.

4. Throttling adjustment. For the outlet pipe installed gate valve pump device, the gate valve off hours, in the pipeline to increase the local resistance, the pipeline characteristic curve becomes steeper, its operating point along the pump Q-H curve to the upper left. The smaller the gate valve is closed, the greater the increase in resistance, the smaller the flow becomes. This by closing the gate valve to change the pump operating point of the method, known as throttling adjustment or variable valve adjustment.