Chip, I had owned a 1986 Newell and it had the automatic sani-dump valve. It was factory installed. I don't know if it was original equipment or installed later.
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Ken
Previous Owner of 3 Newell's
Wanted: Newell Coach Needing Engine Replacement!
If you want to sell, PM or Private Message me. Thanks!
"I know I’m not perfect, and I don't live to be. But before you start pointing fingers, make sure your hands are clean."
-Bob Marley