We have to consider many factors for this; Common reasons are system problems or wrong pump selection and material selection. If there is a problem with the system, the most common one is pump dry grinding; The wrong material selection will cause the spare parts to corrode and wear quickly. The wrong pump model selection will also cause the spare parts to wear out quickly, or even fail to work in serious cases. If you need our help to determine the cause of the pump failure, you should provide the following information as far as possible: the fluid delivered by the pump, viscosity, temperature, physical and chemical properties, required flow rate, pressure, inlet conditions and pipe inner diameter.