“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Bowl wear ring
Model 411 Horizontal Split Case
Vertical Lathe
Horizontal Lathe
Custom fabrication to a large part
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Figure 1. The general arrangement of a three phase waveform.
Nickerson Field Crew
Horizontal Lathe
Well Pump Installation
Computer Numerical Control Machine (CNC) at Nickerson
Computer Numerical Control Machine (CNC) at Nickerson
Impeller wear ring
Schlumberger Pump Assembly
Vertical Lathe
Gorman-Rupp SF Series® Submersible Solids-handling Pump
National Pump Vertical Turbine Pumps, API 610
Super T Series® Engine Driven
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.
380 Series Vertical Inline Pump with VFD
Utah Lake Cascade Pump
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
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.
