there is no reason to release any pressure while transporting a keg. in fact every commercial keg is handled with the same pressure as it had when it left the brewery. (commercial) kegged beer is not unlike bottled beer save for some filtering which is irrelevant to this discussion. a keg is just a really large vessel, much bigger than a bottle. other than that, and the need to keep it cold always, everything else is pretty much the same. keep it cold, tap the keg, apply the proper pressure to maintain vols, and you are set. homebrew kegs are even more like bottle beer and it is not 100% required to keep it cold at all times (though still a good idea). bottom line, do not release any pressure when transporting your homebrew or commercial beer. Cheers
I move kegs pressurized. 1. It helps keep the poppets seated closed. 2. That's less co2 you have to replace once you get where you are going. But either way, sediment, if there is any, will be stirred up.
