Cavitation is a problem that happens inside pumps when the pressure of the liquid drops too low. Because of this low pressure, the liquid turns into vapor bubbles. These bubbles are not stable — they collapse suddenly when they move to a high-pressure area inside the pump. This collapse creates strong shock waves that can damage the pump parts, especially the impeller. Why Cavitation Is Dangerous Cavitation is harmful because it causes physical damage to the pump. When the vapor bubbles burst, they hit the metal surfaces with force, like tiny hammer blows. This can break or wear out the impeller blades. Cavitation also creates loud noises (like stones rattling inside the pump), strong vibrations, and reduces the pump’s efficiency. Over time, it shortens the life of the pump and increases maintenance costs. Common Causes of Cavitation Cavitation usually happens when the pump is not getting enough liquid at the suction side. This can be due to a low liquid level in the tank, a blocked or narrow suction pipe, or sharp bends in the piping. It also occurs if the pump is running too fast or if the liquid is too hot. Sometimes, cavitation happens because the pump is not the right type for the job — wrong selection leads to poor performance and pressure issues. How to Prevent Cavitation To avoid cavitation, make sure the pump has a steady and sufficient supply of liquid. Keep the tank level high enough and use pipes that are wide and smooth. Avoid sharp bends and restrictions in the suction line. If possible, reduce the pump speed to match the system needs. Also, check the NPSH (Net Positive Suction Head) — this is a technical value that tells you if the pump is getting enough pressure at the suction side. Choosing the right pump for your system is also very important. |Piping course in vadodara| |learn piping in vadodara| |piping training in India|