A collection of observations and information from 50 years of engineering experience
Articles
Is there any confusion about NPSH?
Net Positive Suction Head (NPSH) is perhaps the most misunderstood concept in pumping technology. The main source of confusion stems from multiple uses of the term in different but related...
Is there any confusion about NPSH?
Net Positive Suction Head (NPSH) is perhaps the most misunderstood concept in pumping technology. The main source of confusion stems from multiple uses of the term in different but related...
Multi-stage pump in-line (tandem) versus oppose...
Common to early twentieth century multi-stage rotodynamic (centrifugal) pumps were design features for minimizing axial thrust. At that time the thrust bearings available had limited load carrying capability. Design solutions...
Multi-stage pump in-line (tandem) versus oppose...
Common to early twentieth century multi-stage rotodynamic (centrifugal) pumps were design features for minimizing axial thrust. At that time the thrust bearings available had limited load carrying capability. Design solutions...
The ideal pump
Consider a pump that functions reliably under all possible operating conditions, no matter how abusive, including complete loss of prime or dead heading. Imagine this pump converts all of its...
The ideal pump
Consider a pump that functions reliably under all possible operating conditions, no matter how abusive, including complete loss of prime or dead heading. Imagine this pump converts all of its...
Storm drain – what happens when the power goes out
During heavy rains earlier this week a City of Long Beach storm water drainage pump was temporarily inoperable due to a power outage. This occurred during a peak storm period...
Storm drain – what happens when the power goes out
During heavy rains earlier this week a City of Long Beach storm water drainage pump was temporarily inoperable due to a power outage. This occurred during a peak storm period...