Hydroguard™ Hybrid Breathers

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For low-flow applications.

From the expansion chamber system to the check valves, every element of Des-Case’s patented Hydroguard™ hybrid breather has been designed to stand up to a wide variety of industries and applications.  The breather is outfitted with an expansion chamber to isolate lubricants from all levels of ambient humidity. A clear, rugged polycarbonate casing allows for viewing desiccant as it changes colour, indicating that the breather should be replaced. Check valves ensure no excess pressure/vacuum builds.


  • Eliminates rust-forming condensation

  • Prevents sludge deposits and water-contaminated oil

  • Provides longer oil and filter life

  • Reduces wear and tear on equipment, prolongs life

See attached Datasheet for Product Specifications and Size Selection.

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Product Description

How it works

As wet, contaminated air is drawn through the unit, multiple 3-micron polyester filter elements remove solid particulate and the colour-indicating silica gel extracts moisture.

The diaphragm allows for expansion/contraction of the air within the casing as a result of temperature variations during steady-state operations.

When air is expelled from the container, the top foam pad prevents oil mist from contacting silica gel or entering the atmosphere. The hydrophilic agent is partially reactivated by the dry air passing back through.

Expansion chamber and internal check valve system create a nearly-sealed system
Integrated nylon standpipe and clear polycarbonate casing allow for greater chemical compatibility and vibration resistance
Filter element captures particles at 3 micron absolute (β3≥200)

Ideal for …
High-humidity applications

See attached Datasheet for Product Specifications and Size Selection.

Additional Information


DC-HG-1, Dc-HG-8

Hydroguard Hybrid Breathers Datasheet

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