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The Eaton tank breather filters of the Series BFD prevent water and other contaminants from entering fluid reservoirs where differential pressures can occur through thermal expansion and contraction of the fluid, or during filling or emptying procedures. Desiccant air breathers utilize the entire filter area and have the ability to extract water vapor out of the air as soon as it enters the unit.

Filter Type
max. volume flow
66-190 gal/min (0.25-0.72 m³/min)
max. hygroscapacity
0.19-1.26 lb (86.5-576 g)


  • Refillable with drying agent
  • Available with adapter and clogging indicator
  • Replacement spin-on air filter available separately
  • Seal and plastic plug prevent moisture entering before installation


  • Hydraulic systems
  • Bearing lubrication systems
  • Mobile earthmoving equipment
  • Gearboxes
  • Robotic hydraulic systems
  • Mobile tank systems
  • Diesel fuel storage tanks
  • Transformers with oil cooling systems
  • Vacuum and welding chambers
  • Agricultural equipment
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