Hi der woder wo wrote:The cap on the return, is it a modification? Did you ever run it without?
I want to know, if it is really beneficial also in practice.
This is the way I made it first up .
Unfortunately I Brazed it so I can't easily remove it to find out .
This was the first still I made . I did external reflux line because I thought it would be best way to get past VM takeoff .
I put on a cap becuase I felt that vapour would want to blow up it and cause erratic operation ... only a feeling ... like you I would like to know for sure .
But I think that if the easy vapour path is via the main column then its pointless however if there is restriction in vapour flow up main column then cap on reflux return line is valid