Winterizing black tank flush
I never did anything to winterize my built-in black tank flush (last two years). I thought it was self draining and would be ok. Fortunately I have not had any damage, but when winterizing this year...
Forum Discussion
After I finish winterizing I just push on the check valve stem in the hook up and a little Stream of pink squirts out, so I am assuming that the line gets filled in the process. Have never had a problem or freeze up.
