What is th PSI out of a 20 pound Propane Tank? ...
Answers: The pressure inside the tank at -40 degree F is1.3 PSI and at110 degrees F it is197.3 PSI.The working pressure for appliances[pressure on the chain after the regulator] is 11" in a hose column -11" is less than 1/2 PSI.
Most tank have regulators on them. That grey entity that looks like a flying saucer. I believe it is between 3-7 psi.