I want to put in a reverse osmosis kit under my kitchen sink, and it requires a waste line tied into the main drain line of the kitchen sink. There's already a dishwasher drain line hooked up to the main drain line as seen in the picture:
I see there are drain line adapters I could buy which would allow me to connect my RO quick-connect and dishwasher to the same drain point:
but I'm not sure if the adapter will fit with the copper drain line that's already hooked up. It looks like a 1/2" copper pipe. Anyone know if this adapter will be compatible?