A kitchen island sink with no adjacent wall for a conventional vent is best served by which venting arrangement?

Giải thích

An island fixture vent, often called a loop vent, rises from the fixture drain, loops up as high as possible under the countertop, then returns down and back to the vent system. It is used where the sink is not against a wall, such as a kitchen island. A foot (relief) vent and accessible cleanouts are typically required.