i have one 1.5" opening to run laundry drain into the base of kitchen sink stack. the question is should i drain the washer into the sink and the sink into a regular 1.5" drain -- OR -- can some sort of standpipe arrangement still work in this situation?
if i use 2" pipe narrowed to 1.5" between trap and 2" stack, and it doesn't work,would it just back up into the tub anyway? wouldn't that still be better than splashing the whole discharge into the tub?
there would be 2 feet between tub and stack, 3 feet between tub drain and stack, and four feet between washer outlet and standpipe (if i put the standpipe as close to stack as possible).
blue is cast iron and purple is pvc in this pic. i'm not interested in breaking into the floor or cutting into the cast iron stack for this.
many thanks for your comments. what would you do in this situation?
if i use 2" pipe narrowed to 1.5" between trap and 2" stack, and it doesn't work,would it just back up into the tub anyway? wouldn't that still be better than splashing the whole discharge into the tub?
there would be 2 feet between tub and stack, 3 feet between tub drain and stack, and four feet between washer outlet and standpipe (if i put the standpipe as close to stack as possible).
blue is cast iron and purple is pvc in this pic. i'm not interested in breaking into the floor or cutting into the cast iron stack for this.
many thanks for your comments. what would you do in this situation?