Replaced hot water stem in shower and now no water.
I am trying to replace the hot water stem in my bathtub and I got it changed out and when I turned the water on nothing. Took it off and turned the water on and water sprayed out and again I put it on and nothing. I am a complete novice with this, there is another piece that came with the stem and looks like there is a piece in the pipe. Am I supposed to replace that also? And is could that be why there is no water. I tried to screw it out but it won't budge. I would appreciate anyone's help. The house was built in the 70's and I have been in it about 4 years. So it may be the original stem for all I know.