Hand lever operation. Espresso-grouping, espresso-group handle, and boiler flanges are made using heavy-gauge, solid brass because of the conductivity and uniformity of heat that brass provides over other alloy metals. The horizontal boiler of solid copper is extra heavy, nickel-plated, internally and externally, to deter waterfowling. Large, easy to use, knobs to operate hot water and steam wands. One hot water and two high volume steam wands with anti-suction valves to deter milk from back flowing into the boiler are standard.
Gas (propane or natural) fired boilers with independent pressure switch and automatic gas set.