Can hydraulic metering diaphragm pumps experience cavitation? I think positive-displacement pumps won’t, that’s what everyone thinks.
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Can hydraulic metering diaphragm pumps experience cavitation? I think positive-displacement pumps won’t, that’s what everyone thinks.
Positive displacement pumps can also suffer from cavitation, as negative pressure is generated at the pump’s inlet as well. Negative pressure causes gas to boil, and cavitation in positive displacement pumps is also very dangerous. It can easily cause damage to the diaphragm and check valve of the hydraulic diaphragm pump. Each manufacturer has figures for the net positive suction head, but they are not made public like those for centrifugal pumps.
I have never seen cavitation in diaphragm pumps; I have only heard that bubbles can cause fluctuations in the pump’s flow rate and pressure
Positive displacement pumps can also suffer from cavitation, although the effects are not as severe as those in centrifugal pumps
Positive displacement pumps can also suffer from cavitation, although the effects are not as severe as those in centrifugal pumps, and their destructive impact is much less than that of centrifugal pumps.
Thank you all; I was wrong.
Positive displacement pumps can also experience cavitation. Cavitation occurs when the feed pressure is lower than the saturated vapor pressure of the material at a certain temperature, resulting in the formation of bubbles that cause localized erosion. Therefore, in certain conditions, the local pressure in a positive displacement pump can also be lower than the vapor pressure of the material.
Hydraulic metering diaphragm pumps can experience cavitation, but in most cases this effect is negligible due to the small amount of cavitation that occurs.