Is air gap required for dishwasher when there is no garbage disposal under the sink?
I just bought the house. I have cleaned 7/8" pipe and the air gap.
Water is still coming out of air gap when dishwasher is puming the water.
Can someone help me?

Welcome handyjoe

It depends on the state that u live in. In some states a high loop under sink is still OK. I have heard nothing but bad things about the air gap for dishwasher.

What state do u live in?

Chuck

Is air gap required for dishwasher when there is no garbage disposal under the sink? Water is still coming out of air gap when dishwasher is puming the water.
Can someone help me? Yes! Air gaps are required on all diswashers,
I am no fan of counter top air gaps. We don't install them in my area. We insatall high loops. No service calls and no complaints.
Having said that, In the top of an air gap is an insert with two holes. Inside the air gap are two divisions. One division connects to the inflow side of the air gap (from the dishwasher) and the other connects to the outflow side (to the disposal). If the top insert is put in wrong, water will flow from it when the dishwasher empties. For correct operation of the air gap both holes in the insert need to be positioned over the outflow division of the air gap.


In case you ever want to do away with that pesky counter top air gap and install a high loop Air gap.(see image) I'll be more then happy to help.
Note: In all the hundreds of high loop air gaps that my company's installed we have yet to get our first complaint or service call. This holds true in the high loops that we have advised installing on The Plumbing Page right here.

Good luck, Tom