Lev Nelik

Lev Nelik (aka “Dr. Pump”) is president of Pumping Machinery LLC, an Atlanta-based firm specializing in pump consulting, training, equipment troubleshooting and pump repairs. Nelik has 30 years of experience in pumps and pumping equipment. He may be reached at drpump@pumpingmachinery.com. For more information, visit pumpingmachinery.com/pump_school/pump_school.htm.

Pumps

Vertical Pumps Repair Specification (VPRS), Part 2

There is a structured document—a repair standard—in which different levels of repair can be applied.

Vertical Pumps Repair Specification, Rev. 1B

For larger pumps, however, a more thorough examination, documentation and restoration of internal concentricities must be done.

Pumps

Let’s Add Some Thermodynamics to Hydraulics! Part 2

Pumps

Let’s Add Some Thermodynamics to Hydraulics, Part 1

Pumps

The Current State of the U.S. Pump Industry

Columnist Lev Nelik shares his prognosis for the future of the industry.

Pumps

Reliability Considerations When Comparing Pump Types, Part 2

Columnist Lev Nelik discusses pump selection in part two of this two-part column.

Pumps

Reliability Considerations When Comparing Pump Types, Part 1

Columnist Lev Nelik discusses pump selection in part one of this two-part column.

Pumps

Your Guide to Quelling Noise & Vibration

These issues can cause serious issues, even leading to catastrophic failure.

Pumps

Troubleshooting HVAC Pumping Systems, Part 2

Columnist Lev Nelik discusses piping systems with reader Lee Ruiz.

Pumps

Learn to Repair Pumps Properly, Part 2

Lev Nelik and reader Lee Ruiz dive further into efficiency in vertical turbine pumps.

Pumps

Troubleshooting HVAC Pumping Systems

In his latest column, Lev Nelik covers how installation and maintenance problems in a clean water pressure boosting pumping system can cause a host of issues.