Avoid this unique and specific type of cavitation caused by the impeller passing too close to the cutwater(s) on a volute-style pump.
Jim Elsey
The placement of the cutwater, its length, thickness, leading edge profile and flow angle all have roles in the casing efficiency.
The impeller and casing must be matched to each other or the results will be a disaster.
Why is my pump not performing to the manufacturer’s published performance curve?
In his latest column, Jim Elsey discusses solving NPSH margin issues.
Inspired by recent events, I hope to clear up the continual confusion around net positive suction head (NPSH), specifically as it pertains to self-priming pumps on a lift application.
In part 2 of this series, Elsey discusses best efficiency point.
In part one of this two part column, Jim Elsey explains why you shouldn't overlook basic advice.
In part two of this two part series, Jim Elsey discusses potential issues with variable frequency drives.
Jim Elsey discusses the pros and cons of VFDs and VSDs.