Damaged or worn interior valve components can lead to failure. Depending on the issue, you may not need to cut out and replace the entire valve. Let’s look at common issues that occur inside a valve and how to fix them.    Replacing all valve parts aside from the body can be the best way to deal with operational issues, especially in older valves. Just be sure to thoroughly inspect the valve body and the piping connections before deciding to complete the replacement of the valve internals.