This house has no vents... no drains ... I plan on installing a drain that will just empty outside for now.This seems like the best I can do? Trying to install a vent pipe that is above the trap seems impossible so thats why the air admittance valve.
>>2977005>a vent pipehow big does it really need to be? could you try and sneak a section of 1/2" vinyl tubing upstream of the air suction, and then sneak that vinyl hose out somewhere you could vent it.the idea I am getting at is that with the air admittance vale, it is just a check valve, allowing air to get into the pipes to prevent that suction lock thing. problem is, as you probably know, if the weather changes and the sewer pressure burps back up, at least a 1/2" clear hose can provide a path for it to prevent burping your sinks. if you do it and find that maybe 1" can do it, cool, but keep in mind, you want the run to be as short as possible.the upshot to using vinyl hose is that you will be able to see if it gets nasty stuff growing up into it from the vapors and all that, so you may need to replace it on occasion. you might not even need an air valve...
>>2977005What problem are you trying to solve?
Should work on the temp, but it's going to be sketchy with the short drops and low air intake.
No drains? Where does the poo go?
>>2977176Into the chicken coop where secondary use occurs.