Equipment Protection Meets Problem Detection

Des-Case® Standard Disposable Desiccant Breathers

Des-Case desiccant breathers are designed to filter out two of the most harmful contaminants to today’s equipment – dirt and water. Multi-tiered filtration takes care of the particles, and silica gel absorbs water from incoming and outgoing air.

Des-Case breathers are unique in their design, allowing for bi-directional, controlled airflow through their integrated standpipe, high durability polycarbonate and nylon body, and multiple air vents.

In addition to preventing particle and water ingression, they can also be an indicator of abnormally functioning equipment.

Breather Basics

Des-Case desiccant breathers are designed to:

  • Protect lubricated reservoirs against external contamination (dust as well as humidity)
  • Prevent oil misting from lubricant reservoirs into ambient air
  • Indicate water adsorption with colorchanging silica gel desiccant
  • Be an early indicator of equipment issues

Things to Know

  • The silica gel in a Des-Case breather turns from blue to pink in the presence of water molecules and turns from blue to brown (or dark blue, yellow, or orange) in the presence of oil molecules or mist.
  • The gel should normally turn from blue to pink from the bottom of the filter to the top.
  • If the desiccant indicates the presence of oil, the change should not reach more than 30% of the volume of the breather.
  • The average duration of a Des-Case breather is six months to one year (varies by application).
  • Consider total cost of ownership when selecting a breather. The right design for the right application will prove to be most cost-effective in the long run.

Problem Detection

There are four main alerts visible with a Des-Case desiccant breather. In almost every circumstance, they point either to issues with reservoir/machine or with breather selection. As always, Des-Case is standing by with technical and customer support to help you design or troubleshoot your particular situation.

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