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.
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.
Columnist Jim Elsey on the common issues found on the suction side of the pump.
Common issues in horizontal centrifugal pumps in nonslurry applications that are used for pumping nonviscous Newtonian fluids.
Jim Elsey looks at how to make the pump more efficient
Jim Elsey's first article of two explaining the pursuit of perfection in pumping
The second installment of Jim Elsey discussing how the impeller affects axial thrust and stuffing box pressure.
In part 2 of this 2-part series, Jim Elsey instructs operators to do no harm.