The shower valve in my guest bathroom is leaking and I would like to replace it but it's fairly old and not compatible with the new mixer cartridges. I bought a brand new valve & cartridge but I'm a bit nervous to attempt replacing it because the hot & cold water pipes will need to be re-soldered and I'm not sure I have enough space to do a good job.
This is an Eljer valve which I believe has been discontinued. The shower handle is one of those where up-down controls the flow and left-right the temperature of the mixture.
Are there any other options? Maybe some sort of converter cartridge is available? I don't even know where to start looking nothing appears compatible.
I would like to switch to a single handle and replace the trim (to Moen or Delta or something) but don't know if that's possible without replacing the valve?
Here is what the valve looks like