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Originally Posted by tslaven
Does anyone know where I can get the adapter...M&M Hose Co. #05 2285 thanks
A little additional information is needed to give an accurate answer to your question. If you are referring to your holding tank dump valve adapter that mounts the dump valve to the tank, you may find multiple issues. On many of the Vintage Airstreams where the dump valve assembly is centered below the rear bumper, a broken dump valve mount can be a greater issue than jus the valve and mount . . . if the break is related to having the assembly drag on the pavement while entering/exiting a steep driveway, you may find that the tank is fractured as well requiring a major repair to the tank or total replacement. When this happened on my '64 Overlander, the damage was so extensive that a new tank and valave assembly were required. Additional descriptive information along with a photo would help in getting suggestions.
Good luck with your research and investigation!