how long does it take to fill two 80 tanks if they were completely empty. What keep carbon monoxide from entering the tanks from the gas engine?
ANDRES M First of all, never dry your tanks empty to prevent moisture formation inside your tanks. But it will take close to 20 minutes to fill two 80`s. With 500 psi it only takes 7 to 8 minutes. Keep the compressor intake hose high and opposite to the wind.