“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Model 411 Horizontal Split Case
Submersible Turbine Pumps
3800 Series, Single Stage End Suction
Vertical Turbine Pumps, Deep Well
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
SF Series®
Utah Lake Cascade Pump
Horizontal Lathe
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.
Figure 1. The general arrangement of a three phase waveform.
Bowl wear ring
Well Pump Installation
Vertical Lathe
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Horizontal Lathe
Frame-mount Centrifugal Pumps
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.
Computer Numerical Control Machine (CNC) at Nickerson
Computer Numerical Control Machine (CNC) at Nickerson
380 Series Vertical Inline Pump with VFD
National Pump Vertical Turbine Pumps, API 610
Utah Lake Cascade Pump
Close-Coupled Vertical Turbine
80 Series® Engine Driven
Vertical Lathe
Ultra V Series® and UltraMate®
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
