IMO

Largest Vertical Submerged Screw Pumps Successfully Tested At Delaval Turbine

Performance tests were recently completed at Delaval Turbine Inc., on the largest vertically submerged screw pump systems ever built. Designed by engineers at the IMO Pump Division of Delaval and built at Delaval's Trenton, N.J., plant, the three units are each over 40 feet (12.