S- Drain Pipe

[smorris1 (Sam Morris, LC #341 CMI)]

Would anyone write this up ? I call this an S-Trap

[cfoley1 (Christopher Foley)]

Yes its an. S. Trap. If Top curve was longer in length then it would be ok but its not. Also another fix is if you put an AAV at the top curve when it makes final downward turn. The AAV breaks the vacuum. I have foto of what i mean. I will post em later when at home

[rlewis5 (Roy Lewis, CERTIFIED MASTER INSPECTOR RETIRED)]

I got this from another member a while back.

[cbottger (Charley L. Bottger)]

Like this one

[smorris1 (Sam Morris, LC #341 CMI)]

Thank you

[cfoley1 (Christopher Foley)]

Here is the AAV in use as I stated in earlier post , always nice to get the AAV up high but this will be ok

[belliott (Bob Elliott, 450.0002662)]

@cfoley1

Here is the AAV in use as I stated in earlier post , always nice to get the AAV up high but this will be ok

Not OK here .
Mechanical failure possible and a report write up.

[dandersen (David Andersen, TN HI# 40)]

Has anyone documented these “failures”?

I have had siphoning issues even w/o an “S Trap” configuration. But I have tested many with Thermal Imaging and have yet been able to get one to fail so I could document it.