My garbage disposal empties into a trap. Before the trap, my other sink drain joins with a vent tee. I am assuming this in incorrect. Occasionally, the trap does not empty fast enough and water + food climbs up into the horizontal run of pipe, causing it to clog. I am also assuming that I need to replace the vent tee with a sanitary tee.
My problem is that I can not find a replacement sanitary tee that has the top threaded. I also can not find a male adapter that maintains the proper diameter. I am seeking advice on how to redo this.
Come to think about it, is this plumbing arrangement even allowed? The waste from the other drain, along with the dishwasher discharge flows into the line from the disposal. Isn't it normally the other way around?