Winterizing Air Pressure

[Tundra 2014]

The reason I limit pressure is so I can leave the compressor running and go from valve to valve opening and then closing faucet-one at a time.

[eye95]

I don’t know about air, but at 45 psi the water pressure drops only about 5 psi when I open a single faucet. Air probably drops more, but I don’t know.

Still, for the reason cited in Tundra’s post, having nothing open from time to time during the process, I limit my air pressure to 45.

[Roberte52]

Originally Posted by txredfish

100 PSI would be too much air pressure on the lines. I am not how much PSI your lines can handle. I use about 40 PSI on mine and it is plenty to blow out the lines. I assume you can regulate the pressure on the pressure on the compressor you are looking at.

X2! Used the air pressure method with anti freeze in the p-traps the last couple years with no problems. Just keep your compressor pressure low. I keep it between 30 and 40 psi. Had a friend blow off a couple line fittings once because he didn't manage the air pressure