National Pump Company Sizes: 150 × 92 / 300 × 83 / 334 × 92 Gallery Submersible Turbine Pumps Model 342A Single Stage End Suction Vertical Lathe Bowl wear ring Close-Coupled Vertical Turbine Vertical Turbine Pumps, Deep Well Horizontal Lathe Impeller wear ring 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. SF Series® Figure 1. The general arrangement of a three phase waveform. Custom shapes cut from raw materials. Photo courtesy of On the slopes Ultra V Series® and UltraMate® 80 Series® Engine Driven “NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017. Schlumberger Pump Assembly Computer Numerical Control Machine (CNC) at Nickerson 3800 Series, Single Stage End Suction Custom fabrication to a large part Impeller wear ring Horizontal Lathe Model 411 Horizontal Split Case 380 Series Vertical Inline Pump with VFD Utah Lake Cascade Pump Frame-mount Centrifugal Pumps Machinist at Nickerson Company running a state-of-the-art CNC machine. Utah Lake Cascade Pump CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools. Bowl wear ring Gorman-Rupp SF Series® Submersible Solids-handling Pump Parley’s Water Treatment Plant. Photo credit SLCdocs.com Computer Numerical Control Machine (CNC) at Nickerson Nickerson Field Crew Horizontal Lathe 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. National Pump Vertical Turbine Pumps, API 610 Well Pump Installation Vertical Lathe Super T Series® Engine Driven Image Info Dimensions 334 × 92 Name national-pump.jpg Mime Type image/jpeg Type JPG Size 34.03 KB