Back Siphon and Hose Bib

Does the rule of having the back siphon be at least 6" higher than the sprinkler head also apply to the hose bib? I would guess so but cannot find anything to back it up.

been a standard for quite a while & many new have internal designed
install vacuum breakers at all exterior threaded hose bibs & sillcocks

duh… why didn’t I remember that? Guess at 46 I am already having a senior moment. :smiley: Thanks Mr. Adair…