Dishwasher Drain Hose Installation Air Gap

Air gap problems are usually caused by a leak or a clog in the drain hose.

Dishwasher drain hose installation air gap.

If an air gap fitting is used there will be two lengths of drain hose. A dishwasher air gap separates two branches of hose with a physical gap of air to guarantee that cross contamination between the dishwasher and drain is impossible. The air gap or anti siphon prevents siphoning if sinks are drained simultaneously. However if you d prefer not to use that fitting there is a dishwasher air gap alternative.

You can make a high loop a unique configuration of the drain hose that takes the line up above the water level. The water can flow back into the dishwasher which will leave water in the bottom of the dishwasher. One branch of the air gap fitting connects from the dishwasher to the air gap. If an air gap is not required the drain hose must have the high loop from the floor to prevent backflow of water into the dishwasher or water siphoning out during operation.

The other branch descends from the air gap to the garbage disposal. The factory drain hose on the dishwasher which runs from the dishwasher to the smaller of the two tailpieces on the air gap and a 7 8 inch inside diameter hose that runs from the other tailpiece on the air gap to the dishwasher nipple on the garbage disposal. You may need to trim the hose and be sure to use a hose clamp. Air gap to drain after mounting the air gap device to the sink or countertop you ll attach the dishwasher drain hose to the small side of air gap.

How does a dishwasher air gap work. Dishwasher drain hose installation air gap. Cut a length of 7 8 inch inside diameter drain hose to fit between the air gap and the sink drain or the garbage disposal. An air gap connection is the preferred method of connecting a dishwasher drain and is required when installing a dishwasher in many areas.

It s a basic yet useful preventative measure. California code compliant how to install an airgap properly replace if you see water coming out of the airgap make sure you pop out the plug from the garbage. The air gap fitting links either to the garbage disposal or to the drain itself. The device has two hose fittings on its underside below the sink or countertop.

You ll need another piece of hose to connect the larger end of the air gap into the sink drain. An air gap is a small metal or plastic fitting that is installed on the countertop or sink and usually has a decorative cap. In this video i ll explain what an air gap does and why you may need one.