Lay the compressor on its side and take a hacksaw blade and make two cuts 180 degrees apart in the brass fitting just down to the threads. Then take a small chisel and peel the remains of the fitting out of the tank. Removed a number of large brass fittings like this. Just don't get carried away with the cuts or you'll have another problem.
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
