Connecting a Dishwasher Drain Hose to an Air Gap: A Step-by-Step Guide Preparation: Disassemble the air gap kit. Adjust the bottom retainer nut for sink thickness. Install the air gap: Insert the air gap through the hole in your sink or countertop. Secure the air gap to the sink or countertop.

Here is a step-by-step guide: 1. Choose the Location: Select a suitable location on the countertop near the sink. Make sure it is within reach of the dishwasher drain hose. 2. Drill a Hole: Use a drill to create a hole in the countertop of the appropriate size for the air gap. 3.