Originally Posted by TimCarpenter
So, the valve is glued to the pipe coming from the tank? It is the joint where the pipe from the tank connects to the valve that has the leak. From that, are you suggesting the easiest solution is to in screw from the tank and redo that entire assembly (which is an elbow from the tank to the valve)?
No, it looks like the flange which is leaking.
Just take it apart with the bolts, clean it, and replace the o-ring with the one from the new valve, keeping the glued side of the flange in place..