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3-Screw Pumps

3screw pumpThree 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 pumpSingle Suction

Flow Range Maximum Pressure
Pump Series GPM L/M PSI
BAR
1-100
4-375
150
10
3G
1-55
4-208
250
17
5-400
20-1500
500
35
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
5-250
20-950
2200
150
15-175
55-660
2000
140
15-175
55-660
3000
200
250-900
950-3400
1500-2000
103-140
15-100
55-375
5000
310
950-2100
3595-7950
150
10
EMTEC 5-240 19-910 1300 90
TRITEC 10-220 40-830 1160 80

double suction pumpDouble 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

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Vertical magnetic drive 3D series Imo three screw pump.

** Available in sealless canned motor/pump configuration

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Canned Imo pump series 210H with 6 HP, 3600 RPM motor. 
Pump series 3E also available in canned motor/pump configurations.

Canned Motor/Pump Brochure