View Full Version : Dishwasher drain
jackkann
Jun 9, 2009, 03:50 AM
How is a dishwasher supposed to be vented according to the general plumbing code
massplumber2008
Jun 9, 2009, 04:00 AM
Hi Jackkann...
A dishwasher is not usually vented separately. It usually connects into the drain from a kitchen sink and the drain from the kitchen sink is vented.
If you install an individual ptrap for a dishwasher then that would need to be vented or connected to a vent just like any other fixture with a trap.
Hope that helps...
MARK
speedball1
Jun 9, 2009, 04:29 AM
How is a dishwasher supposed to be vented according to the general plumbing code
Marks answer's bang on. If a DW is connected to a kitchen sink through a disposal nor a branch tailpiece then it's vented and trapped by the sink.
Anything else requires both a trap and a vent. Regards, Tom