Air

Today, cleanliness limits are set for almost all media-carrying systems. Air extraction is an alternative to wet extraction.
Advantages:
- non-destructive testing (e.g. displays, electronics, rubber hoses ...)
- Testing of air-carrying or gas-carrying parts
- Reuse of the parts

Air extraction is divided into:

Air jet extraction
Exterior areas or interior areas of components that are accessible to a compressed air jet and that have no contact with liquids during production and operation or that can be damaged by contact with liquids.
Examples: electronic circuit boards, individual parts that cannot be flowed through in the intake tract, packaging material (KTL, blister packs, cardboard boxes)

Air through-flow extraction
Inner areas of flowable components that have no contact with liquids during production and operation or that can be damaged by contact with liquids.
Examples: hoses, housings, filters, elbows, bellows in the intake tract

Areas of application in general:
Pressure and oil areas, fuel systems, brake systems, cooling and air conditioning systems, intake tract, exhaust tract, manual, automatic and axle drives, electronics, steering systems

[Source: THE NEW VDA 19, Fraunhofer IPA Workshop F295, October 28, 2014, Stuttgart]