Gorman-Rupp SF SeriesĀ® Submersible Solids-handling Pump
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.
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Submersible Turbine Pumps
National Pump Vertical Turbine Pumps, API 610
380 Series Vertical Inline Pump with VFD
Figure 1. The general arrangement of a three phase waveform.
Close-Coupled Vertical Turbine
Bowl wear ring
Impeller wear ring
Nickerson Field Crew
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
Custom shapes cut from raw materials.
Model 411 Horizontal Split Case
Vertical Turbine Pumps, Deep Well
Bowl wear ring
Machinist at Nickerson Company running a state-of-the-art CNC machine.
