Sun Mar 29, 2015 7:44 am
Are the kegs full and if not purged with c02? If they are then it shouldn't really matter. If there is plain old air in the tops of the kegs and you put them on their sides then you increase the surface area exposed to air, which will lead to faster staling.
If you leave them upright then the particulate matter that is in the beer will settle out with time. If you leave them on their sides, when you go to serve the beer and flip the keg upright then everything that has settled out will go back into solution.
"Not all chemicals are bad. Without chemicals such as hydrogen and oxygen, for example, there would be no way to make water, a vital ingredient in beer."
-Dave Barry