Most of the new workstation sinks don’t have a knockout for air gap and don’t accommodate a disposal… what’s the best solution for dishwasher venting?
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I believe this question could be improved with evidence that "most" new workstation sinks are not disposal/air-gap compatible, or information that makes available disposal/air-gap compatible workstation sinks not suitable for your situation. – Triplefault May 21 '23 at 11:47
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Some "workstation sinks" on sale now do have disposal-compatible sink holes and an extra top hole for an air gap. I did a web-search on "workstation sink" and found plenty of kitchen sinks at Home Depot. One is this (no endorsement implied, only to show they exist on sale now):
This is from the above sink's instruction manual showing the typical 4" to ~2" drain adapter that can be taken out and replaced with the disposal adapter:
Triplefault
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a knockout for air gap
Many dishwashers can use a high hose loop instead of a traditional air gap. That is easier to install and avoids the ugly air gap cover. However, if local code does not allow for a high hose loop then you can drill a hole to install the air gap.
In the opposite scenario, if you have an air gap for a dishwasher and get a new dishwasher that can use a high hose loop instead, you can install a soap dispenser using the old air gap hole.
manassehkatz-Moving 2 Codidact
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