Plumbing a Dishwasher

[hadespuppy]

I'm getting a dishwasher delivered in a few days, and there's obviously been one in the space before, but I suspect that the plumbing is incorrect. You can see the hot water at the back, which should be right, but it's the drain that has me concerned. Every diagram I have seen has the drain from the dishwasher going into the sink drain between the

Comments

[_nicolai_]

It looks to me like that will work OK.

[runonthesun]

I've actually installed a a few of dishwashers and I've redone an entire kitchen by myself. The one thing I never messed with is hooking up drains. Unless you really know what you're doing, they tend to leak and they also can be prone to sewer backups if not done right. It's worth the piece of mind to pay a couple hundred dollars to have a plumber come out and correct an improper layout - you would probably end up doing it when you eventually sell the place anyway. What you have isn't to code and the black vinyl pipes aren't as intuitively easy to fix and leak-proof as you would think

[revchris]

I"m not sure about whether or not there are code issues with this - each device discharging into the main sewer line has its own trap; that's the kind of question you should contact your local building inspector about.

There also may already be a dry loop - on my dishwasher it's behind the dishwasher and not in the sink space.

The one thing I see that I would probably change is the tee where the dishwasher comes in. I would have used a wye rather than a tee for better flow and less back pressure on the dishwasher drain when the sink drain is flowing.