I'm trying to fix a leaking shower valve. It is a Peerless. I do not have the model#/instructions/parts list for it and can't find an exploded diagram online. It has a ball shaped knob that twists side to side to side for temp and moves up and down for on/off.
Does anyone know how this comes apart? I thought the dome shaped piece with the knurled ring would thread off but my channel locks are not budging it and I do not want to destroy it.
Or is this type of valve not fixable at all and just needs to be replaced? I am hoping to avoid going through the drywall on the adjacent wall to replace the entire assembly.