Four Points To Pay Attention To When Starting A Centrifugal Pump

① The head generated by a centrifugal pump at a certain speed has a limited value. The flow rate and shaft power at the working point depend on the condition of the device system connected to the pump (level difference, pressure difference, and pipeline loss). The head changes with the flow rate.
② Stable work, continuous conveying, no pulsation in flow and pressure.
③ Generally, there is no self-priming ability, and the pump needs to be filled with liquid or the pipeline needs to be evacuated before it can start working.
④ The centrifugal pump starts with the discharge pipeline valve closed, while the vortex pump and axial flow pump start with the valve fully open to reduce the starting power.
Because a centrifugal pump relies on the centrifugal force of the impeller to form a vacuum and lift water, the gate valve must be closed first and water must be filled when starting the centrifugal pump. Only when the water level exceeds the impeller position and the air in the centrifugal pump is discharged can it be started. After startup, a vacuum is formed around the impeller to suck water upwards, and its gate valve can automatically open to lift the water. Therefore, the gate valve must be closed first.