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CAVITATION

This is an example of cavitation in a valve. Cavitation is the formation and implosion of cavities in a liquid (similar to bubbles) usually on the low pressure side of a pump or valve. Cavitation is a significant cause of wear (surface fatigue) that can lead to a failure condition. The most common examples of this kind of wear are pump impellers and bends when a sudden change in the direction of liquid occurs.