Why "Group"?

#1: Post by **shawndo** » January 17th, 2018, 9:21 pm

I'm supposed to be Mr Coffee guy to my non-coffee-nerd friends, but someone stumped me with "Why do they call that part a "group"?"
My google-fu is also failing me.
Anyone have this trivia ?

#2: Post by **another_jim** » January 17th, 2018, 10:24 pm

Brewhead + portafilter = group

January 17th, 2018, 11:13 pm

I used to think that, but in practice it seems that Brewhead = Group with/without the portafilter.
Would it be incorrect to call it a "group" if the portafilter was removed ?

In any case, Ill go with that. I I think I just have an internal mental bug thats probably wrong.

#4: Post by **Orcasite** » January 17th, 2018, 11:35 pm

"Gruppo". Italian for "group", used to describe an interconnected set of mechanical parts. Used generally for bicycles and thus applied logically to the mechanisms used in espresso machine group head. (valves, springs, seats, etc).

January 17th, 2018, 11:54 pm

I would say that if you looked at an exploded diagram of the 'Group' of say either an E61 or lever machine, you would see a concentration of many parts that together form the assembly that we refer to as the 'Group'.

#6: Post by **JojoS** » January 18th, 2018, 6:56 am

Orcasite wrote:"Gruppo". Italian for "group", used to describe an interconnected set of mechanical parts. Used generally for bicycles and thus applied logically to the mechanisms used in espresso machine group head. (valves, springs, seats, etc).

Good explanation or maybe they needed to call it something when it was decided to make more of it on a single machine.

#7: Post by **Tonefish** » January 19th, 2018, 6:28 pm

Orcasite wrote:"Gruppo". Italian for "group", used to describe an interconnected set of mechanical parts. Used generally for bicycles and thus applied logically to the mechanisms used in espresso machine group head. (valves, springs, seats, etc).

I'd bet on this one. Many bike shops still call the suite of components the "group."

#8: Post by **dominico** » January 19th, 2018, 6:53 pm

"Gruppo" is actually short for "gruppo erogatore".

"erogazione" in this case being the act of actually making the espresso.

January 19th, 2018, 7:14 pm

Ah, the time/study in/of Italia pays off.

#10: Post by **Giampiero** » January 19th, 2018, 8:37 pm

Orcasite wrote:"Gruppo". Italian for "group", used to describe an interconnected set of mechanical parts. Used generally for bicycles and thus applied logically to the mechanisms used in espresso machine group head. (valves, springs, seats, etc).

Yes, correct, 100 plus Lode