What is the purpose of airvent in kitchen sink plumbing line ?
I notice that most of the updated kitchen sinks no longer have an air vent (the things that splutters out clogged waste from the dishwasher drain at times!!). Can anyone please educate me about the purpose of this vent? what happens if I decide to forgo it when we put in our new sink/faucet/diposer and plumbing lines?
Thanks for all your input!