Drain Utility Sink Into Washer Standpipe

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.

Drain utility sink into washer standpipe.

The elbow remains filled with water preventing sewer gas from backing up into your laundry area. Discharging the rinse water into a standpipe keeps the tub clean. A standpipe is a vertical piece of pipe with an elbow on the bottom. If you can install your washing machine in the garage and next to a utility sink then yes you can let it drain into the sink.

Older laundry tubs drain the washing machine leaving dirt and soap scum stains. This is the new pvc drain pipe. If the washer standpipe is pvc and the sink drain will be pvc of the same size the connection is easy. Buy a t shaped pvc joint cut the standpipe insert the t so that the cross is vertical.

The standpipe assembly keeps. The original copper pipe was 1 1 4 and the new pvc is 1 1 2.