I have installed a new water softener in my basement and there is no usable floor drain for the recharge water so the previous owner tapped into the 2" overhead, black plastic pipe drain from the kitchen sink. They used a "Y" type of connector and when I disconnected the old plastic tubing to the previous softener, the return water became smelly and dark gray which is drain water. What I want to do is use the existing "Y" connector and place a P-Trap beside the kitchen sink drain line with a 6" stand tube and suspend my drain line above the tube 1" so there is an air space.
Question: Would I get the drain water from the sink backing up into my P-Trap and possibly running out into my basement?
Question: Would I get the drain water from the sink backing up into my P-Trap and possibly running out into my basement?