Common Pumping Mistakes
Procedure for inspecting systems to troubleshoot problems.
Part 2 of Jim Elsey's column: The System Is the Boss.
Jim Elsey discusses two main factors that make up a system curve for a single centrifugal pump in an open system with a flooded suction.
A common misconception is that it is due solely to material strength.
Avoid this unique and specific type of cavitation caused by the impeller passing too close to the cutwater(s) on a volute-style pump.
The placement of the cutwater, its length, thickness, leading edge profile and flow angle all have roles in the casing efficiency.
In part 2 of this series, Elsey discusses best efficiency point.