blowing out copper water lines with air compressor
I've been struggling to make some plumbing solder joints due to water in the lines. I ended up using a Jet Swet to get some unions on but I ended up creating a leak upstream in the process of tightening them I think. The leak is very slow so have some time to work this out. Have the soldering process down when things are dry.
I have a really nice 26 gallon air compressor and realized people in colder areas completely drain the plumbing of water for the winter. Researched this and looks like I can take apart my pressure tester and stick a air compressor fitting on it then stick it on the hose bib where water enters my home.
If I just set the compressor for 50 PSI, open all the sinks in the house etc. I'm thinking I can get everything near bone dry in the lines and then be able to work anywhere in the home w/o having this water issue.
Have the Jet Swet but in tight areas which I now find myself in I just want dry pipes going in ... I understand draining the entire home may be overkill but I'm now at that point - next time I cut open pipe I want a much better probability of success.
My house is single story, on a slab in southern CA. The pipes I need to solder to are coming out of the slab in a wall about 2" above the slab. I bought some fire cloth so I don't burn the house down. Any tips appreciated.