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Domestic dishwasher connections

View domestic dishwasher discharge diagrams to make sure your project meets Plumbing Code.

Dishwashers must connect to drainage through an air gap fitting choice.

The Plumbing Code requires all domestic dishwashers to connect to the drainage system through an air gap fitting. Examples include the following:

dishwasher air gap fitting

dishwasher at finish air gap fitting


At finish counter air gap fitting.