Under what circumstances are “In Line Vents” ever allowed below the subfloor (In the crawlspace)?
What is an “in line vent”?
Vent for what please tell?
http://C:\Documents and Settings\Larry\My Documents\My Pictures\Kodak Pictures\6-27-2012\100-4477
DWV “In line Vent” as above. Hope the pic shows up???
No pic. Perhaps you mean and AAV or 'studor vent"?
vent under subfloor for vanity sink with p-trap DWV line.
An open vent is not allowed in the crawl space, or the attic, or anywhere else in the home. An AAV would be acceptable.
Thanks… all I needed. Just had a small brain f*rt!