These pumps operate through intake and discharge fluid, according to the change of space enclosed by the vane and the cam ring.

. Vane pumps run in low to middle pressure ranges, from approximately 7 to 25 MPa (or 1015 to 3626 psi) and they can provide the following advantages:

• Minimised discharge pressure pulsation
• Compact and lightweight for high output
• Less efficiency degradation due to vane ware
• Reliability and ease of maintenance
• Quieter and less susceptible to contamination.

These pumps are categorised into three groups:

• Single vane pumps (at either low pressure, medium pressure, or high pressure)
• Multiple vane pumps
• Variable displacement vane pumps.