Tying into a horizontal vent pipe

[greggtag]

Hello,
I have an existing horizontal vent pipe (2 inch), and I would like to vent a new trap located below this vent pipe. So, I need some kind of tee. I assume a 'Vent Tee' would be acceptable, but they are hard to find. Can I use a sanitary tee? How about a Wye? Thank you.

 

[Asktom]

A san tee is fine, just turn it so the sweep of the branch points toward the vent termination.