How do you hook up a dishwasher drain hose?
Air Gap to the Drain (No Garbage Disposal) First, the dishwasher drain hose is connected onto the small side of the air gap, using a hose clamp. The larger side of the air gap is then hooked up to the Y-branch tailpiece on the sink drain with a 7/8-inch rubber hose. Connect both ends of the hose by using hose clamps. Nov 2, 2018