- Safety: our boilers are made in copper, a material that is highly malleable and which, as pressure increases, tends to deform and not to explode, which might happen with stainless steel boilers.
- Reliability: Nuova Simonelli uses independent heat exchangers for each group. Inside the exchangers, on the next-generation machines, there is a Teflon injector to prevent the formation of scale and resulting deterioration of machine performance.
- Hygiene: copper is a bacteriostatic material, which means it is inhospitable for the spread of bacteria. The copper we use is free from lead residues and therefore, perfectly in line with ROHS standards.
- Exclusive characteristics: the Aurelia line has an electronic probe that acts on a control unit, completely isolating the machine if the "conventional" safety systems should not be working correctly.
The SIS (Soft Infusion System) concerns the pre-infusion. When the ground coffee is dispensed, for a few seconds, pressure-free hot water pre-wets it for a few seconds before the pressurised jet of hot water arrives from the pump. This means it is possible to extract the hydrosoluble substances and leave them at high temperatures – which would denature the proteins and as a result, reduce the cream – for the shortest time possible.