Islandvent
New Member
Having my kitchen renovated. A wall was removed by the existing sink countertop to create an island. The removed wall housed the vent for the kitchen sink. That vent from the roof was routed over to the wall a few feet from the island. When I checked the sink cabinet and crawl space after the plumbing was complete I saw what is drawn in black. I’m no plumber but it didn’t look right and read up on the code. The loop had two 90 degree elbows instead of the 45-90-45, and the apex was below the level of the bottom of the sink; the return vent was not connected to the horizontal drain pipe; and the foot vent was sloping in the wrong direction. After speaking to the contractor the changes made are shown in red.
The two remaining issues I see with the code (highlighted) are:
1. The return vent is connected upstream of the sink drain.
The two remaining issues I see with the code (highlighted) are:
1. The return vent is connected upstream of the sink drain.
- The location of the sink drain and main drain line to the sewer leaves no space for the return vent to be placed downstream of the sink drain
- I’m assuming the sink drain and return vent would have to be angled away from the current drain and attached to a new sloped drain that connects to the main drain line to the sewer