I have a 2015 FR3 30 DS. Both the 3 inch and 1 1/2 inch plastic compression flanges that connect around the valves were damaged - probably ran over something that hit the outside dump fitting.
How do you dis-assemble the fittings to replace the compression flanges?
I believe the entire unit is called a double Ell waste vale unit.
You can't replace just the flanges. You have to replace the "Y" fitting. I too ran over something an broke mine. Went to a local RV store an got a "Y" fitting. I did not extend it down through the floor. Got a clear 3 inch straight coupling and when I hook the sewer hose I just fit it up through the hole in the bottom.
That fitting was a problem in my FR3, too. I ended up putting in a macerator system that's completely within the compartment and run a hose through, like WVFR3. Works great and no more worry about damaging the pipe.
You can't replace just the flanges. You have to replace the "Y" fitting. I too ran over something an broke mine. Went to a local RV store an got a "Y" fitting. I did not extend it down through the floor. Got a clear 3 inch straight coupling and when I hook the sewer hose I just fit it up through the hole in the bottom.
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