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Hello- Thank you for reaching out. We appreciate your question. Some state or local plumbing codes require the use of an air gap between the built-in dishwasher and the drain system of the home. This plumbing device is used to prevent the possibility of back flow into the dishwasher in the event of a clogged drain system. If you have any questions in the future, please let us know. We are here to help! Joyce@Cafe
Sorry, there was a problem. Please try again later.My answer would be no. Installation was as easy as just installing it in the cabinet and hooking up the plumbing. If it has an air vent that is news to me. It’s in an island so no vent.
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