jrnymn7 wrote:
dsmith3,
I would tend to think it better to open one faucet at a time, thus forcing the air to take that particular route. The air will take the path of least resistance, so if all faucets are open, it's possible some lines may not get properly blown out. Perhaps it would be best then, to open all faucets, blow out the huge majority of the water, then do each individual faucet, and then open all faucets and blow out again. And leave all faucets open for natural evaporation and zero line pressure.
This is the way I do it. A faucet at a time. Starting furthest from the inlet and working back and repeat. All faucets are left open in the end.