Russ,
I had the opposite problem as you. Mine was leaking air out the tube connected to the solenoid valve. I took the air separator apart & found a fine grit in the bowl. Cleaned the separator & solenoid valve out & problem solved. During the humid times of year I see a few drops of water under the tube on the floor so I know mine is working.
The same air tank that you referred to in your post had two VERY slow air leaks on my coach. The previous owner(s) weren't diligent on emptying the water out of the air tank either. I detected them during my "war on air leaks".
I have an app't at Newell in three weeks. If someone doesn't answer your question I'll ask the question of Newell for you.
Sorry I couldn't be more help.................
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Steve
Newell
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