What is and when pump work in cavitation condition?
Cavitation is a term used to describe the phenomenon that occurs in a pump when there is not sufficient NPSH available (NPSHa). The pressure of the liquid is reduced to a value equal to or below its steam pressure and small steam bubbles or pockets being to form. As these steam bubbles move along the impeller blades to higher pressure area, they rapidly collapse. The collapse (or “implosion”) is so rapid that it may be heard as a rumbling noise; these working condition can cause serious damage to the impeller or to other hydraulic parts.
