Settle a debate regarding sewer hose/smell
We're newbies. Just became full-timers in June. It stinks in here! We (meaning my husband) has emptied the black water tank, but it still stinks in here (like someone just went to the bathroom)...
Forum Discussion
Smells from holding tanks indicate a lower air pressure in the rig than outside. If you have exhaust fans on without an more than equal fresh air window open, then the negative pressure will draw air in through the waste tanks when flushing.
You see, there is no 'P' trap as in a residential toilet there to cut off sewer gas. When you flush, you are open to all there is below.
Another poster said it very well when he suggested creating a trap by elevating a section of your waste hose to create an outside P trap.
However, if you keep your waste water dump valves closed and only dump as needed (wise move-no pun intended) then there should not be any need to or concern about major smells.
Air pressure is the relative issue. When it is low in the rig, air will be drawn in through any open source.
You see, there is no 'P' trap as in a residential toilet there to cut off sewer gas. When you flush, you are open to all there is below.
Another poster said it very well when he suggested creating a trap by elevating a section of your waste hose to create an outside P trap.
However, if you keep your waste water dump valves closed and only dump as needed (wise move-no pun intended) then there should not be any need to or concern about major smells.
Air pressure is the relative issue. When it is low in the rig, air will be drawn in through any open source.
