I have a 1984 Sovereign
. The freshwater drain plug has issues. It started leaking, after ten years of no problems. (I don't live where it freezes, so I sort of ignored the freshwater.) I removed one wheel to get better access and saw what looked like a white plastic valve. It was missing one side of the plastic casting so you could turn it. When I tried to turn it with the remaining "ear," the ear broke off. Fine. I tried grasping it carefully with pliers and ... the part I grasped broke off. I think the plastic is just aged. (I had a Volvo that was great, but the plastic parts were crap. That's another story ...)
Reading a few other posts here, I think I have a handle on some of what's involved, but I'm just not sure.
There are two Phillips screws that appear to hold the valve in place, but with the screws gone, the valve body merely moves a bit. Feels like it's attached to something on the inside, but won't let go. I didn't force it too much because I don't want to aggravate the situation and break something else.
Will I have to open the water tank from inside the trailer to release what's holding this valve in place? Anyone else had experience with this condition? Given the way the plastic is crumbling, I have to believe that I'm not the first person to encounter old plastic in the fresh water tank system.