Centrifugal pumps and compressors are both rotating equipment devices. Each is a machine that imparts kinetic energy to the fluid to create
About Randal Ferman
STEM and the Art of Motorcycle Maintenance
In an ancient time, before STEM (Science, Technology, Engineering and Mathematics) was an educational program, how did people get into those fields?
Notes on NPSH Testing
In pump literature, much has been written and continues to be written about NPSH (Net Positive Suction Head) and cavitation. As career pump engineer,
Pump lead times – what to expect
Introduction We live in a world of convenience and instant gratification. When the Wi-Fi goes down,
NPSH Margin — how much?
A word on the terminology: Net Positive Suction Head (NPSH) is the sum of the total static plus kinetic pressure minus the liquid vapor pressure, at
The User’s Role in Pump Reliability
This introductory 20 minute webinar, with Randal Ferman of Ekwestrel Corp, discusses what operations and maintenance can do to improve pump