Drain Utility Sink Into Washer Standpipe

Older laundry tubs drain the washing machine leaving dirt and soap scum stains.

Drain utility sink into washer standpipe.

You may need a special drain hose depending on the distance of the washer to the sink. This is the new pvc drain pipe. A standpipe is a vertical piece of pipe with an elbow on the bottom. You can install a bracket or wire ties on the back of the sink so the washer drain hose is permanently attached to the sink.

Discharging the rinse water into a standpipe keeps the tub clean. Buy a t shaped pvc joint cut the standpipe insert the t so that the cross is vertical. The original copper pipe was 1 1 4 and the new pvc is 1 1 2. If the washer standpipe is pvc and the sink drain will be pvc of the same size the connection is easy.

The proper way to drain a washing machine isn t to hook the hose over the edge of a utility sink as many homeowners do but to install a standpipe and secure it to the wall framing. The elbow remains filled with water preventing sewer gas from backing up into your laundry area.