Jack,I agree with you about the front tank being near the brake valve.However, the large, long line from the wet tank to the front is a perfect place for moisture to condense. It would make far more sense to me to have both tanks in front close together.I was hoping some GM oldtimer would know the answer to this. It may have been just a space problem.I get a lot of water out of my aux tank, which, theoretically, is not supposed to happen. But, my wet tank has been bypassed so that may be the reason.
Yes, that is my point. It is better to have water condense in the long line to the front then go into a wet tank in the front close to the dry tank.The 4104 wet and dry tanks are separated by a 3/4 inch 20' copper line so after water condenses in the wet tank it condenses more in the long line to the front dry tank. This may not happen in warm weather but it is sure to in cold weather.
Richard, I don't think the air in the wet tank is dry. I'm no scientist but I think it is probably not possible to have dry air in the same closed container as water. The air contains water vapor and the water in the bottom of the tank has condensed out of the water vapor.From what I remember of HS Physics I think that if this air hits anything cold or expands then water will be squeezed out of it. The dry tank and aux tank both have drains just in case this happens.The air going to the dry tank has some water vapor but will eventually be exhausted from the brake chambers if it doesn't condense somewhere first.