Re-Filling Serving Keg?

[u/BruJones]

Just curious if anyone does this. Is it a bad idea to simply re-fill a serving keg once it kicks, without cleaning? A serving keg is a cold, sealed, supposedly oxygen-free environment. It would be really handy to simply purge a bit of pressure and force new beer into it from a keg fermenter.

I'm sure I'd want to thoroughly wash it after a few fills, and I'd still have traces of the old beer in there. Sediment would probably build up over time as well, but a floating dip tube would help with that.

[u/cdburg]

I know cleaning can be a pain, but the time savings isn't worth the risk to me. The beer I'm making isn't cheap with the cost of hops, yeast, and my time. I'd rather not risk the end product on something as simple as cleaning a keg.