("David Lesher" wrote)
I can assure you they will. When a pipeline delivers a tender [batch] of
gasoline into storage tankage; they let it sit for a while, then drain the
bottom of the tank ("water-draw") until they get gas...


At the Brewery (in the 80's) during beer changes, there were these sight
glasses in the lines - at the valves. We'd flush out the line with water,
watch the sight glass ...when we saw bubbles or a definite color change,
we'd wait a few seconds then throw the valve. The water in the line was
pumped out onto the floor, and/or "dumped" with a few spins of the bowl
(a.k.a. the filler).


Montblack