I have a 1981 Foretravel and need to replace the Thetford waste valves with the "new" style. The biggest problem is the 3" ABS pipes which fit into the tanks have O rings. There is a clamp on the tank outlet which apparently secures the pipe with the O ring.
My questions are:
1. Is 3" piping with a groove for an O ring available?
2. If so, where can they be found?
3. Is there some king of glue or sealer used in conjunction with this O ring system?
Any insight into this job is appreciated.
1981 Foretravel Travco w/Cat Diesel Pusher & Allison Tranny, Towing 4x4 Samurai & Hauling Big Yellow Lab