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Reliable Solutions - Water Contamination in Lube & Hydraulic Oils

There are many causes for contamination in lube and hydraulic oils. some of which being:

  • Moisture / Water (free, emulsified, dissolved)

  • Nondeformable particles (grit, debris, wear metals)

  • Polar compounds of oxidation / Varnish

  • Entrained gasses

We are going to dive deeper into the effects of water contamination.


Harmful Effects of Water Contamination in Lube & Hydraulic Oils:

  • Depletes some additives and reacts with others to form corrosive by-products

  • Reduces lubricating film-strength, which leaves critical surfaces vulnerable to wear

  • Reduces filterability and clogs filters

  • Increased air entrainment

  • Corrosion of component surfaces

  • Oxidation of lube oils

Water Removal Options:


The Oil Filtration Systems Solution: Vacuum Dehydration Oil Purification System (VDOPS)

  • Remove water contamination from oil (free, emulsified, and dissolved), achieving very low overall water content (as low as 20 PPM)

  • Remove Gases: the same process of vacuum distillation effectively removes entrained air and gases

  • Remove Particulate: using high efficiency pleated micro-glass filter elements. Achieve particle counts in oil to meet or exceed an ISO 14/13/11

VDOPS Results Proven:

50 GPM OFS vacuum dehydrator keeping wet-end paper machine lube oil clean & dry. OFS is recirculating the 5,500-gallon reservoir of ISO220 lube oil and achieving 17/15/11 with <150 ppm water.


Due to leaking steam seals, they cannot run without the OFS dehydrator. The OFS is always pulling water from this high viscosity oil. They also run a dehydrator on the their pulper lube oil.


Before After

Water Concentration Water Concentration

1120 PPM 45 PPM






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