Holy drain noise batman!

[jarhead]

Last night I started testing my plumbing for leaks and adjust the flow. The flow noise under the tank in the stand sounds like Niagara Falls - reminds me of the sound you hear in the basement pipes when someone is taking a shower or flushes a toilet. Is it because I used a 2" PVC pipe from the point where the tee is all the way down to the sump? Can anything be done do quite it? The bubbling noise in the basement is also something to behold 8O.
Here are some pics of the plumbing under the stand and in the basement:
stand plumbing
basement plumbing
another basement shot

 

[Robin Goodfellow]

hi.
I don't really know what to tell you, but see if you can replace the "staircase" plumbing setup with a 45 degree slope. Sometimes it will help the noise issue. Good luck.

 

[Anonymous]

So I guess at your noisy point you have air trying to go up or resist being pulled down, vs water traveling down. Since you have a cap between that Y, perhaps you could install a thinner line there for air and run it up behind the tank to above water level. This could allow air to escape or enter as needed.

Don't really know if it would help or not, but I would consider it....

Oh, is your exit in the basement below water level? You could try making it above water level- might help.

 

[jarhead]

Since you have a cap between that Y, perhaps you could install a thinner line there for air and run it up behind the tank to above water level. This could allow air to escape or enter as needed.

Oh, is your exit in the basement below water level? You could try making it above water level- might help.

You're suggesting that I drill a hole in the cap and run an airline (such as RO/DI tubing) above the tank?
The exit in the basement is below water level. I will try raising it above water level.

 

[Robin Goodfellow]

You're suggesting that I drill a hole in the cap and run an airline (such as RO/DI tubing) above the tank?

hi.
I think that's what Dan said. One thing to keep in mind is to point the tubing toward something that don't mind getting wet. Just in case, you end up with a ram-jet pump that shoots water out from the tubing if condition is just right.

 

[Anonymous]

Yep, really any size line as long as you can get a secure union down there.

 

[jarhead]

Yep, really any size line as long as you can get a secure union down there.

I can drill a hole the size of the tubing and silicone it in.

 

[LA-Lawman]

Dan had got the right idea. You could also ise a small threaded barb fitting or install a john gues in there and use R/O tubing.

hth

 

[Anonymous]

I'm not sure how secure you can get with silicone- if it slips out you will have a lot of water in the wrong place!

 

[Robin Goodfellow]

hi.
Take Dan and Lawman advices. Drill a hole on the cap, tap it, and put a threaded adoptor on it for the tubing.

 

[jarhead]

hi.
Take Dan and Lawman advices. Drill a hole on the cap, tap it, and put a threaded adoptor on it for the tubing.

I will definitelly try that. What do I tap the hole with - what kind of threads? I should have mentioned that I do have the dursos in my overflows (if that makes any difference).

 

[Mogo]

How about a small bulkhead fitting?

 

[Robin Goodfellow]

hi.
bulkhead will be a bit of over kill, IMHO,

If you want Jaco or JohnGuest adopter, use 1/4 inch male NPT tap. The drill bit is something like a 7/16, but you should confirm it when you get the tap. You can also use larger hole if you want to put 1/2 NPT nylon adopters (common in HomeDepot) on it.

 

[jarhead]

I just drilled a hole in the side of the cap and inserted an RO/DI tubing just to see if it will quite it somewhat... didn't do a thing. I guess my next thing would be to cut the drain plumbing under the stand and run 1" PVC from both bulkheads, have it tee somewhere and into a 2" union in the wall.

 

[Anonymous]

Hey, do you have small openings also in the very tops of your Dursos? If not that may help.

 

[jarhead]

Hey, do you have small openings also in the very tops of your Dursos? If not that may help.

Dan,
Yes, I do. In fact, I drilled a hole on the side of the cap so that it can be adjusted by turning the cap.
Any suggestions on how to modify the drain plumbing in order to silent the flow?
Should I cut the plumbing and run a 1" PVC from both overflows, joining them at the 2" union with a T?

New drain plumbing
Union closeup

or

I can cut the 1.5" PVC at point "B" on both ends, reduce it to 1", and have it come together to a T somewhere.
Cut points

 

[Kingfishhead]

Try putting a ball valve in line. Then you can adjust the backpressure to fill the drain lines but not allow them to fill with air. I had a similar problem with my custom drains dumping too much air in the sump and making a terrible slurping sound. Put them in line and adjusted them to the flow of the return pumps. I have a 120 with a 45 gallon sump and 2 mag 7's on the return with 3' of vertical head pressure and it works great!



The only sound my tank makes now is the cooling fan that is going out.


good Luck


KFH

 

[jarhead]

KFH,
I tried something similar by adding a gate valve at the sump discharge and closing it in increments. I got to a point where it was closed half way and the noise did not quite down at all. I didn't want to restrict the flow any more than that.