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Model 31F
 Standard Duty Gear Pump
 316 SS |  Alloy-C |  Alloy-20
 Sealed | Mag-Drive
Port Connections 1/4" NPT/BSPT
1/2" FLG*
DIN10 PN16 FLG
Max Flow Rate 0.5 GPM; 1.9 LPM
Max Differential Pressure 100 PSI; 6.9 BAR
Max Discharge Pressure 300 PSIG; 20.7 BARG
Max Viscosity 100,000 CPS (mPas)
Max Temperature 500 °F; 260 °C
Min Temperature -40 °F; -40 °C
Max Speed 1750 RPM
NPSHR @ Max Speed 3.0 FT; 0.9 M
Lift (Dry) @ Max Speed 0.5 FT; 0.15 M
Weight (without motor)
  Sealed, Long-Coupled
  Sealed, Close-Coupled
  Mag, Close-Coupled

2.5 LBS; 1.1 KGS
23 LBS; 10.5 KGS
31 LBS; 14 KGS

The 3-Series Gear Pumps have been replaced by the H-Series gear pump line.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.
 

Questions?
Contact us for your application needs

 
Performance Curves
31F (pdf)
 
Dimensional Drawings
31/33 Sealed LC (pdf)
 
31/33 Sealed LC Base (pdf)
 
31/33 MC/Sealed CC (pdf)
 
31/33 MC LC (pdf)
 
Product Manuals
31F-39F Sealed LC&CC (pdf)
 
31F-39F Mag-Drive CC (pdf)
 
Model Coding
3-Series (pdf)
 
Bill of Materials
31/33 (pdf)

 

 

 
 
31F Performance Curves  
 
 
 
 
31F Dimensional Drawings  
 
 
 
31F Sealed with Threaded Ports, Long-Coupled
Model 31F
Dimensional Data (inches) for available Seal Configurations
Dimension Single Mechanical Seal
Double Mechanical Seal
External Mechanical Seal Packing Seal Lip Seal
CP (1) 6.94 7.66 6.94 6.94
L 5.44 6.16 5.44 5.44
N 1.12 1.84 1.19 (2) 1.57
(1) Add .31 inches for Bearing Flush Plugs.
(2) Minimum dimension.

 

31F Mag-Drive & Sealed with Threaded Ports, Close-Coupled

 

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