Quote:
Originally Posted by jimcol
Hblick48,
Just wondering if when you repaired it the first time, would a rubber coupler on the 3" pipe beyond the tank valve relieve the stress on the repair? I'm thinking taking a couple of inches out of the pipe and spanning it with a no hub rubber coupling would relieve the stress.
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I doubt it. Even with the rubber coupler, the tank still flexes as you add liquid. It's the worst place to have a crack. I know that replacing the tank is a PITA and costly even if you do it yourself.
I've personally replaced my grey and black tanks at different times. The grey developed a crack at the bottom of the outlet. Later the black started leaking after I let it get too full. It " burped" and started leaking.
When I installed the black tank, I added support strapping to the bottom of both tanks. They no longer flex as they are filled. Even so, I usually dump when they are 1/2 full. I don't ever want to replace them again. We always camp at places with full hookups.