IMO Pumps

Three screw pumps are the largest class of multiple screw pumps in service today.
They are commonly used for
  • machinery lubrication
  • hydraulic elevators
  • fuel oil transport and burner service
  • powering hydraulic machinery
They are also used in refinery processes for high temperature viscous products such as asphalt, vacuum tower bottoms and residual fuel oils.
Three screw pumps also find extensive use in crude oil pipeline service as well as gathering, boosting and loading of barges and ships. They are common in engine rooms on most of the world's commercial marine vessels and many combat ships.
Flow rates are available from 1 to 3300 GPM (4 to 13,250 L/M) or for operating pressures to 4500 PSIG (310 BAR).
Subject to material selection limitations, three screw pumps are also used for polymer pumping in the manufacture of synthetic fibers such as nylon and lycra.
Designs are now available in sealless configurations such as magnetic drives and canned arrangements. The magnetic drive screw pump is used extensively for pumping isocyanate, a plastic component which is an extremely difficult fluid to seal using conventional technology.
Pumps are also now available in sealless canned configurations.
Three screw pumps are renowned for their low noise levels, high reliability and long life. Three screw pumps are capable of water injection services (Tritec) as well as high pressure coolant service for machine tools (Emtec).

Single Suction

Series with shaft seal:

Flow Range Maximum Pressure
Pump Series GPM L/M PSI BAR
3E ** 1-100 4-375 150 10
3G 1-55 4-208 250 17
3D * 5-400 20-1500 500 35
6D * 5-400 20-1500 1500 100
4SFC 2-15 9-55 1450 100
4VKC 22-248 82-937 1160 80
USNP/4PIC 8-250 30-950 1000 69
12D * 5-250 20-950 2200 150
4T 15-175 55-660 2000 140
6T/6U 15-175 55-660 3000 200
8L 250-900 950-3400 1500-2000 103-140
12L 15-100 55-375 5000 310
413IC 950-2100 3595-7950 150 10
EMTEC 5-240 19-910 1300 90
TRITEC 10-220 40-830 1160 80

Double Suction

Pump Series GPM L/M PSI BAR
C324 * 50-900 200-3400 500 35
T324 300-800 1125-3000 700 50
323F 400-3500 1500-13,250 300 20

*Available in sealless magnetic drive configurations

** Available in sealless canned motor/pump configuration