After some local advise, I was told to drain my sink like the below photo. Sink drains fine but when the sump pump runs, which comes from the left in the PVC, the sink drain bubbles. Any advise on this would be great. As the photo shows, the drain runs from the sink to the sump drain line through the check valve. Thanks for the help!
Adventure continues... Drain help
1 - 20 of 21 Posts
Joined
·
11,827 Posts
Put a vent on the sink line
Joined
·
2,979 Posts
You really shouldn't be tying the sink drain to the sump line to begin with as sink water is considered grey water and sump water is storm. Whether the sump is to a drainage ditch or city storm, you should be introducing grey water to either.
Yea I didn't really understand the setup so thought some local advise would be better than going at it myself from what I found on here.... Guess I was wrong! The sump pump is to the left on the horizontal PVC and drains to the right into the main house drain.... I am assuming the PVC running vertical is up posed to be a vent... Runs out the basement window...
Joined
·
2,979 Posts
Well let me take a stab at it, when the sump runs the velocity of the liquid passing the "Y" in which the sink ties to, is creating a venturi effect causing the sink line check valve to lift from its seat, when the pressure equalizes the check closes creating a slight back pressure in the upstream section of the sink drain piping causing bubbles of air to rise through the sink trap.
Try running the sump without the check valve in the sink line, my guess that is whats causing the issue that is if there is no other check valve further down the line.
If there is another check valve then you may want to replace it, as it may be causing back pressure on the whole drain line piping you have there.
Mark
Try running the sump without the check valve in the sink line, my guess that is whats causing the issue that is if there is no other check valve further down the line.
If there is another check valve then you may want to replace it, as it may be causing back pressure on the whole drain line piping you have there.
Mark
I'm guessing it runs through the same window that dryer vent to the left runs through. :thumbsup:
Disconnect the sump pump from your waste pipes and run it outside the house (not through the window though) to a point where it drains away from the house. In many areas it's illegal to run a sump pump into the waste system because it then needs to be treated like waste water. It can also overwhelm waste treatment systems during storms.
Joined
·
2,979 Posts
Define bubbling...is water squirting out the sink drain, or are you experiencing an annoying sound when the sump runs?
Joined
·
2,979 Posts
How far to the left is the sump?
Is there another check valve downstream of the point where the sink drain ties into the sump line?
What size piping does the sump line tie into ie the main drain?
Are you on a septic system of city sewer?
What color was Nepoleons white horse.....no that a different problem
Is there another check valve downstream of the point where the sink drain ties into the sump line?
What size piping does the sump line tie into ie the main drain?
Are you on a septic system of city sewer?
What color was Nepoleons white horse.....no that a different problem
Joined
·
11,827 Posts
I believe that was the suggestion in your original thread...
1 - 20 of 21 Posts
Join the discussion
Join now to ask and comment!