From ThomasNet: Offering Ideal Solutions for Handling Air or Inert Gas
Two new KNF swing-piston pumps introduce ideal solutions to transfer, evacuate, or compress air or inert gas and deliver oil-free performance without any potential risk of contamination. The new models include a compact and efficient 3.3 l/m micro pump and a 25 l/m mid-size version with both providing vacuum or pressure capabilities.
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Swing-Piston Pumps are suited for handling air or inert gas