Seal less magnetically driven pumps, which require an NPSHr of only 1 ft. (0.30m) FULL CURVE. These pumps can produce any level of differential pressure to 1500 ft (450m) (this pressure is 900ft (225m) greater than centrifugal pumps) and capacities from 4 to 180 GPM (0.91 to 35m3/hr). Construction includes non-magnetic stainless steel or Hastalloy C parts for improved corrosion resistance and improved performance by reducing eddy currents. All bearing surfaces are provided with grooves to provide constant lubrication. High discharge pressure provides sufficient margin above vapor pressure to insure the fluid being pumped stays in its liquid phase as it passes through the magnetic drive.