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6. Reducing cavitation effects
There are several ways to limit the harmful effects of cavitation and/or improve pump operating ranges:
reduce the NPSH of pumps by acting on the design of the impeller and feed components;
limit the consequences of cavitation (noise, erosion, vibration) through appropriate mechanical design and choice of materials;
in some cases, use a feed inductor or impeller installed upstream of the impeller, mainly in centrifugal pumps.
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Pump NPSH improvement
By modifying the main geometric parameters of the impeller inlet vanes, it is possible to design pumps whose cavitation performance can vary over a very wide range.
The main geometric parameters to be varied are: D...
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Reducing cavitation effects