4-Series
Liquiflo’s 4-Series pumps are low flow/high pressure magnetically-driven gear pumps that are completely field repairable. The 4-Series housings are manufactured from Bar Stock in 316 Stainless Steel, Alloy-C or Titanium. With several material options for shafts, gears, wear plates and bearings, these pumps can be used in a wide variety of chemical processing applications.

Typical Applications
These pumps are ruggedly designed and competitively priced making them an ideal candidate for many OEM applications including chemical feed skids.

Features:
  • Pulseless flow
  • Flow rates up to 3.5 GPM
  • Viscosities: 0.3 – 5,000 cP
  • Differential pressures up to 100 PSI
  • Magnetically-coupled seal-less pump
  • 316 Stainless Steel, Alloy-C, Titanium Housings
  • Low NIPR (NPSHR)
  • Repair Kits Available

4-Series Composite Performance Curves (Test Fluid-Water)

MATERIALS AVAILABLE

GEARS
WEAR PLATES
BEARINGS
HOUSINGS
SHAFTS
316 SS
CARBON
CARBON
316 SS
316 SS
ALLOY-C
CERAMIC
GLASS-FILLED PTFE
ALLOY-C
ALLOY-C
GLASS-FILLED PTFE
GLASS-FILLED PTFE
SILICON CARBIDE
TITANIUM
TUNGSTEN CARBIDE COATED
RYTON (PPS)
RYTON
PEEK
PEEK
      
CERAMIC COATED
TITANIUM
        

Repair Kits Available
Repair Kits simplify inventory and speed repair.
All parts can also be purchased separately.

 

MODEL 41-MC 43-MC 44-MC 45-MC
Max Flow 0.5 GPM; 1.9 L/M 1.2 GPM; 4.5 L/M 2.5 GPM; 9.5 L/M 3.1 GPM; 11.7 L/M
Max Diff Press 100 PSI; 7 BAR 100 PSI; 7 BAR 100 PSI; 7 BAR 100 PSI; 7 BAR
Max Discharge 300 PSI; 21 BAR 300 PSI; 21 BAR 300 PSI; 21 BAR 300 PSI; 21 BAR
Max Temp 500° F; 260° C 500° F; 260° C 500° F; 260° C 500° F; 260° C
Min Temp -40° F; -40° C -40° F; -40° C -40° F; -40° C -40° F; -40° C
Max Viscosity
@ 300 RPM		 4,500 CPS 3,700 CPS 2,000 CPS 1,000 CPS
NPSHR @1750 RPM 4.5 FT/1.4 M 3 FT/0.9 M 3 FT/0.9 M 2 FT/0.6 M
Weight 22 LBS/10 KGS 22 LBS/10 KGS 25 LBS/11 KGS 25 LBS/11 KGS

 


Every Pump Needs Relief
Positive displacement pumps should be installed with a relief valve in the discharge line. This will protect the pump and piping should a valve be closed inadvertently. Liquiflo manufactures two sizes of relief valves in both 316-SS and Alloy-C for this purpose.