The valve is in the pot with a nut. It is no problem to take the pot out and remove the valve. Then you can get to it with a drill press. If that does not fix it you should be able to order another valve and reassemble. I know this because the new pot I bought was loose and I did not realize it. It leaked lead and it ran everywhere. Since I am in Mexico I thought it would cost more in shipping to send it back and pay to have it returned than just to buy another one. Little time and I had it fixed. After having it apart twice I probably would not send it back for any part. It is easy to work on,