Does every sink need a vent pipe?
Does every sink need a vent pipe? A plumbing fixture like a sink can not function properly without a sink vent. A sink needs a vent because the pressure put on the drain pipe when water flows down the drain pipe needs to equalize. The air needs to escape the drain pipe in order for the sink to vent. Where is the vent pipe for kitchen sink? A regular kitchen sink, adjacent to a wall, has a vent hidden in the wall that connects to the drain. So it won't plug up, the vent must rise six inches above the...