(ok) (i am more tired now so hopefuly this is understandable
i never really thought of scald as super high presure, althoguh i did go and check and i might use an older animation for it in my head
I view scald as more spiting out a large amount of boilding like water at a target, more like throwing a bucket then a power washer, it might ve a hose, but in the pmd games it had a 1 tile range unlike water gun, water pules, and hydro pump, meaning it might be less presure
My idea of vaporeon gives them a large water storage like organ in front of their ribs on their body, this is used to spray out water for moves, and is seperate from spit.
... this fell apart but i will say what i tried to make