The pressureon the hot water side of my shower is very low. The cold water comes out normal, but as I turn the handle to fade it into the hot the pressure drops by over 60%. Copper lines run into the shower valve. I live in an apartment complex. The maintenance person looked at it but didn't fix it and didn't say anything about it. Do I need to replace the shower valve or could there be something else behind this issue. I'm a little stump. I would really appreitiate the help, it is def. needed...

do I need to replace the shower valve or could there be something else behind this issue.
You needn't replace the valve. What's happened is that some crud got sucked up into the hot water inlet ports of the valve, (how ofter do you flush your water heater out?) What's the brand name of the valve? How old? Back to you, Tom