Thank you for the reply.
I'm still not interested in deciphering those plumbing scenarios you
painted.
Why don' t you just get a professional to unblock the existing drain line,
if you can't do it yourself? In the garage, this should be easy. I had
unplug the washer drain pipe in my in-house washroom once, and that was a
mess. It flooded repeatedly.
"orangetrader" wrote
I am trying to drain the washer discharge to the kitchen sink drain
because the drain line in the garage is "blocked".