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Model 312F
 Standard Duty Gear Pump
 316 SS | Alloy-C
 Sealed | Mag-Drive
Port Connections 1 1/4" NPT/BSPT
1 1/2" FLG*
Max Flow Rate 29 GPM; 110 LPM
Max Differential Pressure 100 PSI; 6.9 BAR
Max Discharge Pressure 270 PSIG; 18.6 BARG
Max Viscosity 100,000 CPS (mPas)
Max Temperature 500 °F; 260 °C
Min Temperature -40 °F; -40 °C
Max Speed 1150 RPM
NPSHR @ Max Speed 5.0 FT; 1.5 M
Lift (Dry) @ Max Speed 17 FT; 5.2 M
Weight (without motor)
  Sealed, Long-Coupled
  Mag, Long-Coupled

52 LBS; 23.6 KGS
70 LBS; 31.8 KGS

312F Sealed
312F Mag-Drive


The 3-Series Gear Pumps have been replaced by the H-Series gear pump line. The H-Series is recommended for all new applications as well as an upgrade to any existing 3-Series installations.

Liquiflo's original 3-Series Gear Pumps are manufactured from 316 Stainless Steel, Alloy-C or Alloy-20 and are available in Sealed or Mag-drive configurations with flows up to 55 GPM and differential pressures up to 100 PSI.

*Standard Flanges are ANSI 150# RF.
312F Performance Curves (Typical)  
312F Dimensional Drawings  
312F Sealed with Flanged Ports, Long-Coupled
Model 312F
Dimensional Data (inches) for available Seal Configurations
Dimension Single Mechanical Seal
Double Mechanical Seal
CP (1) 15.19 15.19
L 11.25 11.25
N 4.06 3.78 (2)
(1) Add .31 inches for Bearing Flush Plugs.
(2) Minimum dimension.


312F Mag-Drive with Flanged Ports, Long-Coupled


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