Hi,
I have brass pipes that in some places are connected to what seem to be copper threaded pipes. The hot water supply has a T connection to a pipe moving up to the faucet. I am replacing the sink, and need to change out this upward pipe, but it has an elbow fitting that I cannot remove. Nor can I remove the pipe itself from the T fitting. I have tried Mapp gas to heat the fittings, and visegrip pliers and liquid bolt removers and I have made zero progress.
Help?