“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Super T Series® Engine Driven
Figure 1. The general arrangement of a three phase waveform.
Bowl wear ring
Utah Lake Cascade Pump
National Pump Vertical Turbine Pumps, API 610
SF Series®
Submersible Turbine Pumps
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Impeller wear ring
Custom fabrication to a large part
Computer Numerical Control Machine (CNC) at Nickerson
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Model 342A Single Stage End Suction
Bowl wear ring
Figure 3. Three phase power has three identical sine waves overlapping at an offset of 2π/3 radians or 120°. When one phase reaches an x-intercept or node the next phase is only 30° and approximately 5.6 milliseconds from reaching its crest.
Well Pump Installation
Impeller wear ring
Frame-mount Centrifugal Pumps
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Model 411 Horizontal Split Case
Vertical Lathe
Nickerson Field Crew
Schlumberger Pump Assembly
Vertical Turbine Pumps, Deep Well
Figure 2. A simple sine wave with a period of 360° and an amplitude of 1. In single phase power the x-intercepts are 180° from each other. A full period is 360°. A single phase motor has a crest approximately every 16.5 milliseconds giving the motors a tendency to vibrate more, which may contribute to a shortened bearing life.
