Draining a frost free hose bib
Anyway, we moved in last December, and I made sure to get written in the offer that all the sprinklers were blown out and all outside spigots were drained
Now I am doing this for the first time, and I either did it right, which seems very simple, or I missed something big and it needs to be redone
1. I turned off the water inside the house. All my connections are PEX and in the furnace room. The line to the outside hose has its own shut off like the rest of the pex lines. So I turned it off
2. I removed the hose completely for winter storage
3. I turned the hose bib open. But not a lot of water came out. To test I went back and turned the shut off back on, and turned on the hose bib. Water like usual
My question is, after I turn the water off and I turn the spigot outside open, shouldn't the entire length of PEX drain that feeds the hose bib, or does just the small amount in the frost free part drain out. I know they are supposed to be sloped for drainage, buts its inside a finished wall so I cant see the pitch. I assume it is since whenever I used it in the summer to fill up a watering can (with no hose attached) that when I shut it off, some water still came out, which I assume is the water left in the pipe.
I know the pex In the wall is within the heated part of the house, but Id still prefer to have the entire line drained, just not the hose bib portion. Is the water caught due to a vacuum in the line, and if so, how do you break that vacuum for the water to drain. The pex run to the outside is at least 30 feet.
Or is it just supposed to be that way, and water stays in the line? I know for our camping trailer water wouldn't drain out of the lower drain points until you opened a valve for the air to be let out, and then it drained out
We had one of our coldest winters in decades last year, and as far as I know there was no frozen pipe in the wall. Im sure if there was id see water damage by now.