I want to add a sink in my basement, and I have direct and easy access to the drain pipe (PVC) which is where the main / upstairs kitchen sink drains (Clean out is right there too).
Can a new drain be cut into this location of the stack? What kind of fitting would be recommended? Do I need to worry about venting at this sink?
Also during any cut in (if I can) I would guess that I'd need to provide some kind of temp support of the vertical pipe..


Thanks for any and all help!
JG

If you can find a 2" solvent cement saddle for the drain pipe size use that. Otherwise you will need to support the PVC pipe, cut out a section and either solvent cement in a sanitary t fitting or stub on one with Fernco fittings.

GoI don't hold much faith in saddle fittings, Let me take your concerns bone at a time,

Can a new drain be cut into this location of the stack? Yes! Center it 18" above the floor line,

What kind of fitting would be recommended? a sanitary tee.

Do I need to worry about venting at this sink? Yes! You will have to run a vent out the roof or revent back to a existing roof vent. Another option would be to install a AAV (air admittance vent) if code allows,

during any cut in (if I can) I would guess that I'd need to provide some kind of temp support of the vertical pipe.. You better be propping up the stack unless you want it to end up on the floor. You will need a raiser clamp and a couple of 2 X 4s,(see images). Good luck Tom