Liquiflo - Model 31F -3-Series Gear Pumps

The 3-Series Gear Pumps have been replaced by the H-Series gear pump line.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

Port Connections: 1/4" NPT/BSPT
1/2" FLG*
DIN10 PN16 FLG
Max Flow Rate: 0.5 GPM; 1.8 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