All ActivityMost RecentMost LikesSolutionsRe: Black water valve leaking, NOT a simple valve replacementThanks for all the replies. The first thing I am going to try is to weld pieces of ABS material onto the fitting where the bolts go thru and tap threads in it and bolt it together that way. If that doesn't work I am going to try cutting and removing the old valve assy. from the pipe, by chisel or special tool, then glueing a new one on.Black water valve leaking, NOT a simple valve replacementI recently purchased a fw camper and found out the other day that my black water valve had a slow drip. I looked at it closer to see the bolts that hold the valve to the flange, which is glue to an elbow, has 2 of the 4 mounting tabs broken off. Its the 2 bottom bolt tabs, the bolts are very badly rusted and have cracked the tabs off and the holes the bolts go thru in the valve are busted also. I don't know where to start..... It looks like the 4 bolt flange that the valve bolts to is glued to the elbow so I can't just cut it out and glue a new one in. Am I going to have to replace the tank???? Do they make any kind of rubber adapter to go over the elbow and the connect to a new valve mounting flange? I have a plastic welder and can use it pretty good, I was thinking about cutting out the old valve and welding a new one to the elbow. Any thoughts? Anyone had this happen to them? Thanks in advance for any help you can offer. Mark