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.