SaniFlo Question...

We have an attached single car garage that the previous owner converted into a sewing/hobby room. The room has a countertop w/ a sink that has a 2" drain.

Does anyone know if the Saniflo system will allow me to utilize that current 2" drain for the Saniflo waste water? I know depending on the model the discharge pipe diameter is either 1†or 3/4â€. Logic would indicate that a 2†drain would suffice but I know very little about plumbing.

Thanks,
Rastus

The instructions for the Saniplus say that it must discharge into a 3" stack.Also,the toilet must be vented to the atmosphere (no AAVs allowed.)

I receive my saniplus system tomorrow. As far as venting they say in their literature that all US codes require venting. But, at the same time, in every single picture I can find relating to their system, including both promotional images and customer's installs, the vent hole is plugged and no pipe is near it. (it actually comes plugged; you have to saw the cap off to access it).

I know if I call them they'll tell me the same thing, but I wonder what the deal is? If these systems must need venting then why is no one venting them?