Latest Discussions : Plumbing


06:02AM | 09/18/06
Member Since: 09/17/06
2 lifetime posts
I am replacing an old dishwasher. I would like to know if I should add a one-way valve to the drain hose, to help prevent water from the sink from flowing into the bottom of the washer.

I have a loop in the drain hose going up to just under the bottom of the counter, but some water still comes out of this hose if I leave the end open.

There was a blue, hex-shaped plastic connector in the old drain line, but this passes water both ways. I think it may have been just an adapter.


05:03PM | 09/18/06
Member Since: 09/17/06
2 lifetime posts
Yes, I hadn't thought of that. No check valve for me.

Thanks for the response


03:14PM | 05/07/17
It's recommended that you make a "high loop" with the drain line. Fixing the tube so that it makes a hump above the top of the disposal. Taping the dishwasher drain line to the side of the sink is a good way to do this. That should keep water from draining back into the dishwasher.

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