- Coalescer Separator



The Hilcosep was designed to remove moisture and particulate contamination from steam and gas turbine lube oils. Self-sufficient stand-alone models with reservoir capacity ranging from 2,000 gallons to 12,000+ gallons and portable models as well as custom designs are available.

Wherever moisture and particulates need to be removed from turbine lube oil.

  • System flow rates from 10, 30, 60, and 100 GPM
  • Positive displacement oil pump with integral relief valve
  • TEFC pump motor
  • NEMA 4 electrical enclosure with controls
  • ASME code pre-fi lter vessel
  • ASME code coalescer/separator vessel
  • Clean and dirty sampling ports
  • Inlet basket strainer
  • Automatic, pneumatically operated, water drain valve
  • Manual moisture drain
  • Liquid level sight gauge

  • Particulate removal effi ciency of 99.5% @ 3 micron
  • Free and emulsifi ed water content reduced to under 25 ppm
  • Total water content to under 150 ppm based on an infl uent moisture content of 5% maximum

  • Explosion-proof electrical controls
  • Low-watt-density oil heaters
  • CRN or PED vessels

Sizing a System -- Your Hilco coalescer/separator should have a fl ow capacity of at least 1/2% of the total lube oil volume. The following chart depicts the maximum recommended size reservoir for each Hilco coalescer/separator system.

  • Flow capacities from 1 to 30 GPM
  • Ability to service the needs of multiple units
  • Customized electrical requirements
  • Integral particulate fi lter and coalescer fi lter arrangement
  • Liquid level sight gauge



  • Flow capacities to 20 GPM
  • Designed to side stream part of the existing lube oil pumps fl ow
  • ASME Code and non-code designs available
  • Duplex designs available for uninterrupted fl ow during element changeout
  • Liquid level sight gauge
  • Auto drain optional equipment


Hilco’s staff of engineers is always willing to design a system for your particular needs. Call today with your specifi c application requirements.

The chart on the right depicts the moisture content of a 2,000-gallon steam turbine reservoir with a 10-GPM Hilco coalescer/separator installed.

After 16 hours of operation, the Hilco coalescer/separator was able to reduce the moisture content of fl uid from 3,174 ppm to its natural saturation point.


Hilco has a large inventory of coalescer/ separator element replacements available for immediate shipment. Call for assistance in determining the appropriate size.

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