An apparatus for blending two different components, comprising: two vessels each containing one of said components, connection means to which said components are separately fed from said vessel, and an actuation device which initiates the entry of the components into said connection means from said vessels at a predetermined ratio, where a pressurized vessel each is provided as a vessel from which said component is discharged by means of an expulsion agent via a valve, the valves of said vessels being operated via the actuation device.