I went just about two summers and one winter with no petcock valve at all just a straight shot to the carby on my Morini . Had a couple of days that were hard starting finally despite putting a new float needle. It would never flood the bike when I was riding ever.. it just started decided to do it when it was parked all day..
I put a swamp cooler valve lol. made some fittings and put it in the stock placement that the petcock goes on this BoXer frame. Came out trick very happy with it now. To the average eye nobody can even tell it is a swamp cooler valve and nothing is loose or can remotely rattle.
Dogs shoot I was raised around livestock. That's nutten.