Is this right?? S trap with aav

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eddie5155

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Hello! We just added an AAV to an s-trap and I keep going back and forth on whether or not it will keep the water seal or not!!

What do you think?

Since the branch for the AAV is connected lower, I keep thinking the suction could pull enough water out of there to empty the s-trap before it can pull in air from the vent.

Here's a photo:
IMG_9361.jpg


Please let me know what you think. Thanks!
 
The AAV serves to purpose like that. The trap arm must go into a sanitary tee. Vent up top, drain goes down
 

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