How do you you replace a shower valve that no longer diverts water from the tub spigot to the shower nozzel assuming I know nothing about plumbing but can navigate a hardware store with little help?

Answer 1

Can you tell a blind person how to steer a car and take you someplace without crashing? Probably, so you can probably do the shower valve. Some possible problems to consider. Getting to the control valve. Almost certainly from the backside of the shower. Is there access to that or do you need to cut a hole in the wall. Does the valve have threaded connections or are they sweated on copper? It is unlikely that you can get the same exact model of valve so the fittings that are on the pipes for the old one will probably not fit on the new one. This means you will have to unsolder the old connections and install the new ones. If you can use a pipe wrench and a crescent wrench, understand how to hold the pipe so you don't break it, you should be able to change it out. Sweating copper is about the easiest thing to do in Plumbing once you know how.