sweaner wrote:I have no direct knowledge, but I can't imagine that the steam boiler pressure is not adjustable.
For whatever it's worth, the steam pressure on the Vivaldi is not adjustable either.
They removed the pressurestat and replaced it with a thermostat. While this is good from a reliability standpoint, it's not so good from an adjustability point of view. Since the pressure is fixed at between 1.1 bar and 1.3 bar (a bit high for dedicated steaming in my opinion), getting good microfoam with that much power takes a LOT of practice (or switching to a lower flow 1 hole tip as someone mentioned). This applies mostly to the Mini Vivaldi which does not have an adjustable steam knob.
It's still a great machine, but I'd like to see the next generation of Vivaldi use an adjustable PID for both boilers (like the Duetto II).





