Abstract: A process for homogenizing a pumpable product, in which the product is pressurized and homogenized in an homogenization means equipped with a drive which has a drivable rotor rotatably mounted in a housing, and a stator that is stationary or drivable at an adjustable relative speed relative to the rotor, characterised in that a pressure which can be set independently of the drive of the homogenization means is applied to the product upstream of the homogenization means by means of a pump means equipped with a separate drive, the pressure being controlled such that no cavitation occurs in the homogenization means, and a device for carrying out the process.