Here is a better picture of the re-vent on the washer arm. my thinking was that the air would be on top and easily flow upwards this way? Can you clairify with this better picture?
The other "t's" on the stack are regular T's with no sloping part. Im assuming the sloped part in the middle of the T makes it a sanitee?
* I would never leave pvc unglued, or unstrapped, hence the "for now"