Can someone explain the mechanics of the e61 group head on a non-HX machine?
I understand how it works for HX machines but am curious as to how it works - as in where the water which cycles around the head is drawn from - for a dual purpose single boiler. I cant understand how the cycling water does not end up back in the boiler?
This is purely an exercise in curiosity.
Thanks
I understand how it works for HX machines but am curious as to how it works - as in where the water which cycles around the head is drawn from - for a dual purpose single boiler. I cant understand how the cycling water does not end up back in the boiler?
This is purely an exercise in curiosity.
Thanks

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