“NSF/ANSI 61.”Ā NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Impeller wear ring
Vertical Lathe
Submersible Turbine Pumps
Ultra V SeriesĀ® and UltraMateĀ®
Impeller wear ring
Figure 2. A simple sine wave with a period of 360Ā° and an amplitude of 1. In single phase power the x-intercepts are 180Ā° from each other. A full period is 360Ā°. 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.
Vertical Turbine Pumps, Deep Well
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Custom shapes cut from raw materials.
Close-Coupled Vertical Turbine
Figure 1. The general arrangement of a three phase waveform.
Computer Numerical Control Machine (CNC) at Nickerson
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Bowl wear ring
Schlumberger Pump Assembly
Horizontal Lathe
SF SeriesĀ®
Figure 3. Three phase power has three identical sine waves overlapping at an offset of 2Ļ/3 radians or 120Ā°. When one phase reaches an x-intercept or node the next phase is only 30Ā° and approximately 5.6 milliseconds from reaching its crest.
Vertical Lathe
Horizontal Lathe
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Computer Numerical Control Machine (CNC) at Nickerson
National Pump Vertical Turbine Pumps, API 610
Gorman-Rupp SF SeriesĀ® Submersible Solids-handling Pump
