Leva brings with it design, focusing not just on the physical beauty, but also on the satisfaction only found in a truly mechanical system. The user can intervene in the pre-infusion pressure, shot volume and extraction pressure on each group.
Leva also greatly improves temperature stability of the traditional lever machine thanks to an innovative PID temperature control. Leva’s digital displays show real time extraction pressure on the coffee puck, the pre-infusion and extraction time as well as the pressure curve of the shot.
The new conical mechanical paddle is inspired by the original mechanical group used on the La Marzocco GS – the first dual-boiler espresso machine with saturated groups (1970). This conical valve system assures progressive control of water flow and pressure via an internal orifice, before applying full pressure.
The new conical paddle valve controls the pre-infusion while the volumetric pump is working at full pressure, therefore barista may also perform a pre-infusion on one group while the other is extracting coffee. This dynamic system allows the barista to reduce channeling for a more balanced extraction.