Ktichen Sink Venting

[Yooper]

I am remodeling my kitchen and want to move the kitchen sink. The current sink is vented through the wall up to the attic stack. I am moving the sink about 3 feet over and was considering loop venting the sink instead of busting up the walls, going into the attic, and tying into the existing vent stack. I saw a post in April 07 that talked about doing something similar but it eluded to not doing what I am considering but the guy who replied also included a picture: http://spammanwhat.150m.com/loopvent.jpg

My question is, is loop venting appropriate? I am in northern Lake County Illinois (the guy who responded was a Chicago plumber). I can get into the attic but I would love to avoid that if I can.

Thanks!

[PLUMBILL]

Your link is not working for me however; the Illinois State Plumbing Code does permit loop venting for a kitchen sink.

Call the plumbing inspector for your area and ask; if you can install a loop vent, he might even give you the web site that shows what is permitted by code.

[Yooper]

Sorry about the link. I fixed it. It should work now.

I will put a call into the inspector tomorrow! Thanks.

[PLUMBILL]

Your link is working and the drawing is correct, the only thing is they might want a cleanout on the vent pipe, so check.

[CostaMesa]

Everything is working fine for me and it is good to know that you fixed it and working good.