Bernhard Pluming Inc.•MP #668641

What is an air gap?

Q: What is an air gap and why is it important?

A: If you are referring to an air gap for the use in a dishwasher, it is used to prevent the back up of waste water into the dishwasher.  If you have back up into your dishwasher you can create bacteria in which case you no longer have clean dishes, also you could create odors in your dishwasher.