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High Flow double acting pumps with high pressure delivery for use in lubrication systems that require a combination of high flow and pressure delivery. Pumps can be used with grease up to NLGI-2 viscosity.


Pump Pressure Ratio


Continupus Duty Flow Rate

7.5 lb/min (3.5 kg/min)

Maximum Free Flow Rat

22 lb/min (11 kg/min)

Air Pressure Operating Range

20-200 psi (1.5-14 bar)

Maximum Outlet Pressure

8,000 psi (560 bar)

Air Motor Effective Diameter

4 1/2" (115 mm)

Air Motor Stroke

4" (100 mm)

Air Consumption

26.5 scfm (750 NL/min)

Air Inlet

1/2" NPTF

Fluid Outlet

1/2" NPTF

Wetted Materials

Cast Iron, Steel, Hard Chromed Steel, UHMWPR, NBR

Noise Level

80 dB


120 lb keg, 400 lb drum, Bulk tote

Simultaneous Dispense Points


Max. Line Length

400' (125 m)

Pump Description

Heavy Duty High Flow

531431 - PumpMaster 45 40:1 - Bulk Tote

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