Power, Pumps, and Motors – Drum Topper


Selecting a pump/motor combination should be based on fluid viscosity, power source, and reservoir size. Due to the damage caused by cross contamination we recommend that you use a different system for each type of oil. Using one filtration unit for similar oils (hydraulic, gear, etc.) is second best and should include a filter change-out for each oil type used.

Fluid Viscosity:

Click here to view a Flow Curve Comparison of the Drum Topper for flow rate performance at various viscosities.

Power Source:

If electric power is readily available the following should be considered:

Our standard motors are 115/230 VAC, single phase, 60 Hz. Please see the section “Electric Motors” below for specifics and other options.

Air motors were selected to allow end-users who have easy access to compressed air, but not maybe electric power, the option of using a drum topper. Please see the section “Air Motors” below for specifics.

Reservoir Size:

The amount of time it takes to filter or transfer an oil should be considered when selecting a pump. When filtering the fluid inside a reservoir, allow enough time for the fluid to circulate seven times.

Example 1: A 100 GAL reservoir will take 140 minutes to adequately filter at 5 GPM (100 GAL X 7, divided by 5 GPM).

Electric Motors



Air Motors



  • Air Supply Pressure Needed: 30 to 100 psi (2.07 to 7 bar)
  • Max speed: 3000 rpm
  • Decibel Rating: 87db at 100psi/3000rpms
  • 1.7hp Motor:
    • Air Consumption: 70cfm (35 L/S) at max pressure and rpm
    • Output: 1.7hp (1.1kW) at 3000rpms and 100 psi (7 bar)