1. Speed too high: Reduce engine speed/power.
2. Too much liquid: Throttle the discharge of the pump with a similar butterfly valve.
3. Combination of rotating elements: Check and replace the following parts if necessary: /shaft/bearings/wear rings/impellers/couplings.
4. Wear ring wear: Check the wear ring and replace if necessary.
Previous page：The water pump stops after working for a while?
Next page：Pump noise and vibration?