“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Impeller wear ring
Machinist at Nickerson Company running a state-of-the-art CNC machine.
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.
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Nickerson Field Crew
Utah Lake Cascade Pump
Custom fabrication to a large part
Figure 1. The general arrangement of a three phase waveform.
Submersible Turbine Pumps
SF Series®
Custom shapes cut from raw materials.
Computer Numerical Control Machine (CNC) at Nickerson
Model 411 Horizontal Split Case
Vertical Lathe
Bowl wear ring
Computer Numerical Control Machine (CNC) at Nickerson
National Pump Vertical Turbine Pumps, API 610
Impeller wear ring
Bowl wear ring
Gorman-Rupp SF Series® Submersible Solids-handling Pump
80 Series® Engine Driven
Ultra V Series® and UltraMate®
Schlumberger Pump Assembly
Vertical Lathe
3800 Series, Single Stage End Suction
Close-Coupled Vertical Turbine
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.
