Dishwasher drain hose (how bad is this?)

chigundo · Jan 22, 2014

This is how dishwasher was hooked up since I moved here 5+ years ago, never had any issues. Drain hose developed a crack so I had to replace hose, but before putting everything back together, I want to confirm if this setup is okay.. i feel it's not. Again, haven't had any issues so I don't want to mess with it if I don't have to. The drain hose has no loop and just goes underneath floor to existing drain. It's right next to the sink so I don't know why they didn't just hook it up to the sink drain.

hj · Jan 23, 2014

Unless there is more to the DW drain line than you show, there is no way to keep water in the DW if the pump drain valve leaks. But, in any case, it is NOT how a competent plumber would have installed it.

Sponsor · 2022-01-29T12:20:58-0800

MikePlummer · Jan 23, 2014

the hose for the dishwasher should at MINIMUM have high loop that goes up to the bottom of the counter before going down through the floor.... it would not make this a proper set-up but would be "better" than what you show there

MACPLUMB · Jan 23, 2014

Think about all that sewer gas and bactria coming up that hose !

That is why they are connected to the sink drain so you can have a proper p-trap to protect your health !

chigundo · Jan 23, 2014

The hose was just coiled behind/underneither the dishwasher before heading down.. so there was a horizontal area that had the hole in it where the leak occurred.

chigundo · Jan 23, 2014

MACPLUMB 777 said:
Think about all that sewer gas and bactria coming up that hose !

Where is gas and bacteria coming from if there's a P-trap?

Gary Swart · Jan 23, 2014

What others have tried to explain is there are two ways to drain a DW. One method is to use a high loop. While this is not code in all places, it does work. The universally approved method is to use an air gap fixture which is mounted on the cabinet top above the DW. The purpose of these methods is to prevent the water from the DW from siphoning, and since both methods end up going into the sink drain ahead of the P trap, they prevent sewer gas as well. If your actual plumbing is as you have drawn, it is a real mess.

chigundo · Jan 23, 2014

it is exactly as I drew.. again though, haven't had any issues.. so why is that? dumb luck? I want it right that's for sure, just want to know what to expect before calling a plumber.

What's not shown is under the kitchen sink, there's another p-trap that's connected to a pipe with a air vent on it... not sure if that makes much of a difference in terms of how much of a mess everything is setup.

chigundo · Jan 23, 2014

I'll also add that last night I re-installed the new hose and gave it a high loop.. it's still connected to that drain but it's got the loop now, not sure how much that improves anything.

MACPLUMB · Jan 24, 2014

You do not have a p trap you have a running trap which is illegal !

chigundo · Jan 24, 2014

Well that's not good. Let's say theoretically I'm just a bad artist and that actually IS a p-trap. Would that be okay then?

MACPLUMB · Jan 25, 2014

No it would have to be on the same floor level with a proper vent though roof or connected to a revent

Dishwasher drain hose (how bad is this?)

Users who are viewing this thread

chigundo

New Member

hj

Master Plumber

Sponsor

Paid Advertisement

MikePlummer

Plumber

MACPLUMB

In the Trades

chigundo

New Member

chigundo

New Member

Gary Swart

In the Trades

chigundo

New Member

chigundo

New Member

MACPLUMB

In the Trades

chigundo

New Member

MACPLUMB

In the Trades

Similar threads