[scotkingsbury]

I bought a cat genie. It pumps the liquified cat___ into an open toilet bowl or into a washing machine drainpipe.

I do not want to put the cat genie in the washroom and use the same drainpipe as my laundry wastewater does.

I want to add a second drain pipe about 8 feet away(downstream) into the 6 inch dia (thats a guess on the diameter) main sewer pipe (pvc) that wraps around the perimeter of my basement.

I don't want to cut a section completely out of the main sewer pipe and add a coupling t
(that is the obvious way and is the way the laundry drainpipe is installed

Is there a way to drill a 2 inch dia. Hole and glue on a coupling that wraps around half the pipe to add this second drainpipe?

[speedball1]

You might wish to reconsider the washer stand pipe when you hear what you'll have to do to install a second stand pipe.
I know of no saddle clamp coupling in any size that you can install on the main. But that's just the start of your problem. You will have to cut into a stack or open up the floor to cut a fitting into the main. Next, it will have to be trapped. In addition you will have to run a vent out the roof or revent back into a existing dry vent in the attic although, id local codes permit, you could install a AAV,( Air Admittance Valve) in place of a regular vent.
Regards, Tom