How to control flow rate of Centrifugal pump?

1.Stop-Start/Float Level control Operation.

2.Hybrid Control (VFD + By-Pass).

3.Parallel Operation of Multiple Pumps .

4. Multiple Speed Motors (2, 3 or 4 Speed)

1. Flow and pressure relationship of a pump

2. Do not let a pump run at zero flow

3. Use pressure gauges

4. Do not let a pump run dry, use a check valve

5. Suction valves

6. Eccentric reducer

7. Use a multi-stage turbine pump for deep wells

8. Flow control

9. Plan ahead for flow meters

10. Avoid pockets and high points

11. Be aware of potential water hammer problems.