Originally Posted by ljcpmc
Thanks for the advice. I need to get some pictures. The assembly is a hex head bolt going thru the valve/flanges with a nut. The bolt head will not hold vise-grips or a small wrench. Tried drilling but can't get the drill in for 3 of the 4 bolts and the drill is not level with the remaining bolt causing it to slip into the plastic. Thinking about cutting. Manufacturer sure doesn't make it easy for this model RV.
The valve is no doubt going to be replaced so, get a cutoff wheel, i.e. Dremel and cut the nuts or just cut the flange where the nuts go thru the flange. It's just plastic and very easy to cut.