Still using my camper for Thanksgiving and it looks like we have a few nights coming up where it will dip down to like 28 for a few hours during the night. Should I just winterize it to be safe and ju...
well, water is going to stay one one side of that preventer. In my Cardinal, the line goes from my water bay control panel, clear across and up into the area under my bathroom sink where the preventer is, and then down into the black tank. A quick blast of low pressure compressed air for 5-10 seconds is more than enough to blow the remaining water out.