Recent content by njsteam

Is a vent required on the current setup (with just the sink piped)? Also, is there a drawback to having the drain connect at the horizontal main versus attaching to the stack? I'd prefer to keep the modifications to a minimum if possible.

In my basement, there is an existing wash sink that drains directly into the main drain line via a 1.5" pipe. The washing machine currently drains into the sink but I would like to add a standpipe for it to drain into. First off, is my current setup fine the way it is installed without a vent...