Quote:
Originally Posted by schrederman
Use the blow-out method and then pump antifreeze into it. I don't think you can blow out all the moisture from these plastic fixtures good enough for a prolonged hard freeze. .
|
There is a lot of misinformation on this subject. A bit of moisture is not going to crack plastic in the RV. Its the expansion of water in a pipe that cracks it. As long as there is minimal [very minimal] moisture left in a pipe it will not cause a problem. A prolonged hard freeze vs a prolonged normal freeze doesn't make a difference since once water freezes it doesn't matter how low the temp might go.
I am in the camp of blowing out the lines and have been doing so for years without problems all in Northern Midwestern states. I have described my procedure many times on the forum so not going to repeat now. The key is to be careful and blow out each line one at a time and then do it again a second time. Key is to remember the toilet water line, the outdoor shower, and the water pump. I did kill my water pump last winter because on a re winterize after a short winter trip, I apparently forgot to run the pump as I was blowing the lines and left some water in the pump chanber. PS I also remove the flex line on the shower and the outside shower, open the flow on the hand wand and allow the water to drain from the wand.
There is nothing wrong with going the pink stuff way vs the blow method. You can run into problems either way if you are not precise in going thru all the fixtures. I do not like the smell/taste that seems to linger in the lines after you flush in the spring. I had to use the pink method on my houseboat and the only way to eliminate the smell/taste was to pour bleach into the fresh water tank and then flush it thru all the water lines.
Do it how ever you prefer. They both work just fine.