Blowing Lines
When using air to blow out the lines my furthest water source is our outside kitchen. Is it best to just open the cold side and get all the water out then close and move to the next closest and open ...
Forum Discussion
DrewE wrote:
I don't think that 20 below ice is any more destructive to pipes and fittings than 10 above ice.
And you would be right---Properties of waterIn the practical sense, most fear extremely low temperatures because that's when the ice in pipes may actually freeze and a dip below freezing doesn't cause the water inside to freeze, typically.
I've worked with irrigation and water supply protection up here in MN, sometimes building and protecting working above ground piping during the Winter. We don't use antifreeze in these situations, we eliminate the possibility of pipe rupture by removing the water. Active systems require active heating.
In the RV world, there are, unfortunately, some examples of poor design where pipes have a bell or valves tend to hold water. Couple that with a user that is either unable or doesn't use sufficient air volume and pressure to blow out plumbing. That is when problems occur. Done correctly, eliminating any water in the RV plumbing with air is a sufficient manner of winterizing.
