4

enter image description hereI have a double sink with a disposal on the right side. The disposal joins the left sink drain via a slip joint baffle tee below the left sink then the drain goes to the P-trap and out. It was installed by a licensed plumber.

Every time the disposal is turned on water shoots up into the left sink which is where we like to keep a dish drainer. What can be done to stop the water from shooting up?

Improve this question
10
  • 2
    Your sink might be clogged. Also, consider adding photos of the underside of your sink.
    – MonkeyZeus
    Dec 20 '19 at 20:24
  • diy.stackexchange.com/q/90311/42053 could be relevant.
    – MonkeyZeus
    Dec 20 '19 at 20:25
  • 2
    Can you add a picture of what under the sink?
    – JACK
    Dec 20 '19 at 20:28
  • Do you have an "air gap" unit installed?
    – JRaef
    Dec 20 '19 at 20:35
  • 5
    You have a 90 degree tee, there are “swept” tees available that will promote the flow downwards...
    – Solar Mike
    Dec 20 '19 at 22:03
4

My instincts are inline with the comments by MonkeyZues and Solar Mike. The impeller design of some disposals accelerates the discharge. A partially plugged trap will send water up, following the path of least resistance (and still let the sinks drain). If the discharge from the disposal swept down (with a swept tee) the discharge would be directed down instead of splashing into the vertical-side of the straight tee. Both ideas are simple and inexpensive - cleaning the trap and swapping the tee.

Improve this answer
1
  • Not sure that this is the answer, but it sounds likely to me and will take less than $5 and roughly 30 minutes to find out.
    – Greg Nickoloff
    Dec 21 '19 at 3:06
2

Baffled Tee.

enter image description here

How to Install a Garbage Disposer - plumbingsupply.com

Improve this answer
1
  • Looks like this "baffled T" was designed for this issue. I didn't know they existed. Thanks Mazura!
    – Charles
    Jun 22 '20 at 18:46
0

What about adding a dedicated p-trap for the garbage disposal, which would also cause the Tee to be slightly lower and further down from the sink, which might also help. I have seen installation where there are separate P-traps for both.

It might also help to lower the tee to make it further from the sink.

Improve this answer

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.