: While I'm here I might as well ask another question. I'm considering bathroom remodeling. Taking two back to back bathrooms and making them into one larger bathroom.

: My question concerns running a sink drain down what used to be a toilet drain. Is there any couplings out there for this and is it legal/safe.

: Thanks in advance. The last post about the garbage disposal replacement is driven by those scenes of water spraying all over the place. Old or new.

Reply:
Depending on how the piping is installed you most likely will need to remove the toilet "bend" and install a coupling similar to this one onto the drainage piping if it is above ground and these type transition couplings are legal in your area. Keep in mind that the lavatory drain needs its own vent line installed.
e-plumber