Reasons for insufficient flow of multistage pumps

The reasons for the insufficient flow of the multistage pump are as follows:

1. The bottom valve is too small: change the suitable pump bottom valve 

2. The depth of the suction pipe is not enough. There is an air suction pump: increase the immersion depth of the suction pipe

3. The suction line is too thin or blockage of debris: change the appropriate pipeline to remove debris

4. The impeller is severely worn or severely corroded: new impeller

5. The seal ring is severely worn or corroded: new seal ring

6. The clearance between the semi-open impeller and the pump cover is too large: reduce the clearance

7. The speed is reduced too much: check the current, restore the speed