shower control valve

I'm having an issue (i think) with my Moen 1222 Positemp mixer being very erratic with the temperature of the shower from use to use. One day it'll work fine (mixes temp exactly in line with movement of the handle)... the next day we have to crank the handle all the way to the 9 o'clock...

We are selling our home and need to install the trim for our shower. I called and sought local help, no one seems to know. We renovated the shower a year ago but didn't keep the trim or think to replace the value. I don't want to have to remove and replace the tile. Does anyone have any idea...

I have an old 2 valve shower faucet from the 60s/70s. I removed the handle and was going to just replace the stem and seat but its not like the others I've seen online. If i'm correct the first nut is the packing nut but behind that is round and can't use a stem socket. How would I go about...

I have never seen one of these shower valves before. I’m trying to find a new cartridge for it. Retired plumber at the hardware store thought it might be a Posi-Temp but I’m not sure. Any thoughts on what it is and how to remove it? I can’t get the escutcheon off due to that metal disk in front...

Tub faucet is either giving very hot can't stand in it type almost scalding water or very cold icy. No nice warm shower. No happy medium temp. Just had cartridges replaced as it was not fully shutting off (constant drop). That drip is now fixed, but now it won't get mix of water. Seems only...

I need to replace the handle to a shower, it is a single control (shower only, no diverter). It is a ball type valve turn left for hotter right for colder, water flow is increased by moving handle up, all the way down to shutoff. The handle is attached via a allen screw in the bottom of the knob...