cruz-in wrote:
I too thought that they must pull the air from somewhere. If nothing else when you flush the toilet, theoritically, there is a bit of a negative pressure in the tank that will cause flpw up the vent pipe....but once the toilet valve is closed, not sure where the air to be pulled out comes from...
Having said that, there is a Camco Clyclone on the rig next to us. When the wind blows so that the rear of the cyclone is facing our rig, if you are in line with it, you can smell a faint tank odor. So it must be pulling something.
Keep in mind that the air passing the Cyclone isn't the only air blowing in your face. You are downwind of the entire RV including the sewer connection and anything else in that general area.
