The 50-ft copper coil allows the compressed air to cool before it goes
to my water trap.

I moved the compressor very close to breaker and ran a short hose to
the pressure port. This allowed me to blow out my sprinklers
properly. The breaker stops "gurgling" after I give it enough airflow
to "open it", at which point the air goes to the heads and they pop up.
That point seems to be an indicated 65-70 PSI on my compressor output
gauge. Once the heads pop I can immediately reduce the air pressure
and the breaker will remain open with the heads remaining up. I
reduced it to an indicated 50 PSI after the heads popped up. The heads
will remain up even if I dial the pressure down to an indicated 25 PSI.


My compressor was not able to keep up with the airflow at 50 PSI so
the pressure dropped slowly as I blew out the lines. I had to cut the
airflow to allow the compressor to catch up a handful of times.