Finally, in some espresso machines for commercial or home use, water for brewing is heated in a separate chamber, which requires two separate boilers. This is found primarily in higher-end machines, though it is also found in some mid-range machines, overlapping with HX.
The term "Dual Boiler" is used narrowly for machines with two separate boilers, and more broadly for what are more properly called "Dual Heater" (DH) machines featuring a boiler for brewing and a separate thermoblock (TB) for heating brew water to steaming temperature – opposite to HX machines, where the boiler is at steaming temperature and is cooled to brewing temperature.
In principle, TB machines yield stabler brew temperatures at the expense of steaming performance and speed, while HX machines yield better steaming at the expense of stable brew temperature. True DB machines provide stable brew temperatures and fast steaming, but are larger and more expensive.
R 60V has a unique pressure
Traditionally 9 bar of pump pressure
extracts the flavours and oils from
the coffee to produce espresso. The
R 60V with a unique pressure profile
system allows further enhancement
in the cup with the ability to fine tune
pump pressure over the course of the
Vesuvius is a pressure profiling, dual boiler espresso machine that redefines that home brewing experience. Pressure profiling is an advanced brewing feature found in commercial grade equipment . Equipped with dual stainless steel boilers, an FG304 Gear Pump, dot matrix touch screen controls, and multi-phase profiling, this machine offers unparalleled control over espresso extraction to the home use