I am installing an "in-wall" toilet tank. At the top of this tank is the inlet for water supply and it is a 1/2" male threaded pipe. The plastic protective cap that it came with it, screws on perfectly and so does a 1/2" pvc cap. BUT, the sharkbite female threaded connector won't thread more than a few turns. I also bought a copper threaded connector and it won't screw on more than a few turns.
I don't want to crank down on this and ruin my expensive toilet. Can anyone with knowledge help me figure this out. I'm wondering if the shark bite fitting is tapered and therefore just really tight fitting. My initial idea was to use copper plumbing but since this connection point is coming out of a plastic tank, I don't want to risk melting it.
I'm open to all suggestions but will probably bring this question to my plumbing supply store with my questions.
Thanks!
