[77newell]

Rudy: I thought about that but didn't suggest that option for two reasons - both of which I may be wrong about. First, there is a check valve at the discharge of most dryers that wouldn't allow the depletion of air while Ron was checking in at the campground - he should have returned to the coach with the same air pressure as when he left even if the dryer vent is stuck open. If the vent and the check valve are both stuck open then he could experience the symptoms he described.

My second reason is that I believe there is a check valve of some sort separating what is supplied by the 12v pump from the rest of the system, so this pump would pump up only that part of the system and nothing else. If my assumption is correct then a stuck dryer vent would not effect the ability to pressurize the part of the system - toilet flush for example - that can use the 12v pump. I don't know this to be true as my coach does not have this pump.

Hopefully it is helpful to know what I'm thinking AND how I might be totally off base.