Kitchen Island Plumbing Loop

Generally the venting for a sink goes upward in the wall while the drain water flows downward towards the floor but in an island going up is not an option.

Kitchen island plumbing loop. Jul 25 2014 loop vent plumbing. Connects drain to the stack vent. Plumbing an island sink is tricky.

While installing the drain plumbing for a kitchen island is the same as plumbing a regular sink the venting system can cause some confusion and extra work. Putting a sink in an island in the middle of the kitchen presents some plumbing challenges. Everything needs to be contained within the island itself.

Common at kitchen islands. In situations like martha s kitchen island where you simply can t install a traditional vent pipe that is hidden behind the plumbing fixtures the best solution is a traditional loop vent. Kitchen island loop drain and vent passed inspections 06 03 2019 episode 103.

The code specifies loop venting for kitchen islands and lavatories only so they aren t replacements for toilet vents or vents for other fixture drains such as clawfoot bathtubs or stand alone shower stalls. A vent connects to the trap arm within the standard limitations but rather than rise through the roof. Moreover because the loop must rise at least as high as the drain opening of the sink you can t use a loop vent for a.

The good news is that installing the water supplies to your faucets is done in exactly the same way with an island sink as it is with a standard sink located adjacent to a wall. You don t have the luxury of hiding drain pipes and vents inside the wall. The only difference would be that a sink s water pipes will.

A loop vent is an essential element of kitchen island plumbing. Plumbing for a kitchen island sink isn t as simple as installing a sink against the kitchen wall. We show two methods of properly venting the drain an island loop vent and an air admittance valve so that waste water flows smoothly without clogging.