La San Marco - Inlet valve

The water inlet valve La San Marco uses is basically one type of water inlet valve.  The main water inlet valve is connected to external pump of the La San Marco espresso machine. The water inlet valve is only used for filling up the boiler, the water for the brewing group goes true a earlier valve(expansion valve).

With this water inlet valve you can manually fill the boiler inside the San Marco espresso machine. The biggest variation is mainly the knob/handle used for filling the machine. you see that San Marco models such as the earlier San Marco 85 and the San Marco 95 use a curved handle.  Where later versions of these models and the San Marco 105 use a straight water inlet valve handle