Locate your existing washer s drain line specifically where it goes down into the floor or wall.
Tie washer drain into sink.
Something like this or this but in reverse.
The size of a drain line for a small bar sink.
Laundry sink waste ties in below the standpipe tie in.
Other options for washing machine drainage in garage.
Using your utility sink s drain line measurement measure up from the ground and make a mark on your washer s drain line.
Do not connect it directly to a drain stand pipe unless the pipe is at least 2 inches in diameter.
This is where you will place the new y fitting that will separate the washer s drain from the utility sink s drain in the next.
The sink drain and the washer drain connect below the floor.
This is in virginia.
Connect the washing machine to the sink drain if.
If the utility sink was properly installed it has its own drain.
1 install the drain hose into an installed 2 diameter drainage stand pipe.
This install is in a basement so it would be very difficult to cut more concrete or run a separate line to the sump.
Do not tie it into the trap.
Water is drained from the washing machine directly into the sink.
The drain hose from the washing machine is hung on the edge of the laundry sink.
Tee wye off the vent for the sink above the standpipe waste at least 42 off the floor and if sink on the left in this photo then above the laundry box.
If that s the problem then your objective will work you can tie the sink drain to the washer drain.
There are three rules.
But i assume from your question that sink doesn t have any drain.
If possible and applicable note.