I would like to change the way my washer drains. Right now I runs across the basement floor into the floor drain. I have a Sink drainpipe that runs right above the washer 72" high. I was wondering if there was some way to plumb the washer into the sink drain pipe. The book i have for the washers says, it can pump water 96" above the bottom of the water.

Thank you for your help.

Cody

You will have to cut in a wye or combination wye and eighth bend in the overhead drain line along with a trap, short raiser and a compression fitting,(see image) on the raiser to make this a closed system. You will also need to install a check valve,(see image) on your discharge hose to prevent the dirty water from draining back after the pump shuts down. Good luck, Tom PS. I forgot to put up the images, here they are.

Thank you for answering my question so quickly. For some reason I am unable to see this image.

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Originally Posted by Dragonhrt

Thank you for answering my question so quickly. For some reason I am unable to see this image.

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Go back and look again. Cheers, Tomk

I went into the hardware store for the appropriate parts, and the plumbing specialist in the store mentioned that I should get some sort of blow off valve (I forget the name off the top of my head), as the distance to the main stack would be greater then 5 feet.

Something about allowing air in for better flow.

I figured the vent from the kitchen sink would take care of that, but I wanted to ask you first.

He also suggested against the idea, grease from the kitchen flow. I mentioned to him that plan about with the check valve, and the clean out of the very end of the last wye. I still rather confident this will work, but as I have seen your responses on here I would like to know from a pro.

If you need more information I can attach a drawing, and take a few photos.



Thank you,

Cody

I don't need more information to respond to the big box guys concerns.

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The plumbing specialist in the store mentioned that I should get some sort of blow off valve (I forget the name off the top of my head), as the distance to the main stack would be greater then 5 feet.

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He was referring to a vent. But you're not draining a fixture, you're pumping a discharge, under pressure, into the kitchen branch where it will be wet vented by the kitchen vent.

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He also suggested against the idea, grease from the kitchen flow.

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Most new construction has the kitchen and laundry using the same branch to connect to the main.
You've already checked to see if the pump would lift to the branch. While this isn't the typical washer station it will work just fine. Good luck, Tom