Category:Vacuum pumps
{{Cat main|Vacuum pump}}
Most general pumps can increase as well as decrease the pressure of a gas; however, this category contains pumps that are usually exclusively used to decrease pressure.
{{Commons cat|Vacuum pumps}}
{{Cat main|Vacuum pump}}
Most general pumps can increase as well as decrease the pressure of a gas; however, this category contains pumps that are usually exclusively used to decrease pressure.
{{Commons cat|Vacuum pumps}}