Sorry if this is a newbie question, but I need to learn more about this assembly, and its hard to find the answer on something this specific on Google.
Q. What is the advantages / disadvantages of the type of overpressure system shown in the photo?The story is I have 2 Saeco Aroma's
, but I only plan to keep one of them. Each has a different steam assembly design, as they changed the design over the years. The later model includes a hose leading from the steam assembly into the water tank (see photo). I believe this gets activated by spewing water into the tank in high pressure situations. (I'm not positive; it may only be to prevent water leaking into electricals under rare conditions). The earlier model has no such hose. In that model, the brass valve the hose is attached to is completely closed.
There is an obvious disadvantage to the OP hose; it spews dirtied up water into a clean tank of drinking water. Plus, its one more possible source of leakage. What I'd like to know is if it regulates pressure during brewing at all, or otherwise has any effect on the taste of the espresso. Otherwise, is it strictly a safety feature, and am I better off with it or without it?