• Head differance (ΔH) across the filter media pushes fluid against resistance.
  • Gravity filters have a ΔH of 100 to 300mm.


  • Filter media is laid on perforated tray / conveyor. This if fitted on tank.
  • Dirty fluid drops on the media.
  • Clean fluid is collected in the tank below and pumped back.
  • When media chokes, level starts rising above the media. This is sensed by a level switch.
  • Dirty media is pulled out by geared motor.


  • Most simplest form of filtration.
  • Maintainence friendly.
  • Magnetic seperator can be added for Cast Iron / Steel grinding.