1. Correctly determine the pump's suction lift to ensure that the pressure at the impeller inlet does not fall below the vaporization pressure.
2. Minimize head loss in the suction piping. Greater head loss leads to a more significant drop in pressure at the pump inlet, making the water more prone to vaporization. Therefore, measures should be taken to shorten the suction pipe, reduce the number of fittings, ensure a smooth inner pipe surface, and appropriately increase the suction pipe diameter.
3. Install the pump at a lower elevation. If cavitation occurs due to excessive suction lift, the pump can be installed down in the well or below ground level, closer to the water surface.
4. Use a jet device to increase the inlet pressure.
5. Operate the pump under rated conditions as much as possible. Operating the pump at a head lower than the rated value or at a speed higher than the rated value inevitably results in a flow rate exceeding the rated capacity; this increases the flow velocity at the impeller inlet and further lowers the pressure. Consequently, the pump head should not be arbitrarily reduced, nor the rotational speed arbitrarily increased.
6. Install an inducer at the pump inlet or use cavitation-resistant pump components.