Technology meets the lever espresso machine
In typical lever espresso coffee machines the water that enters the group is straight from the boiler, which is well known to have a pressure of 1 to 1.2 bar, corresponding to 120-130° C. Basically it is the same water used to generate steam. Instead, in the Victoria Arduino Athena Leva, which uses heat exchangers (even though it is a lever machine), the water temperature can be controlled to optimize the quality of extracted coffee. In this case, for an excellent pre-infusion, a special pressure reducer reduces the pressure of the water supply, which is normally 4 to 6 bar. With these specifications, coffee extractions with the Athena Leva are particularly creamy and not burnt (as may happen with water at high temperatures).