Yet another noisy plumbing

[lost66]

Hi

Given youtube link shows my problem, picture in motion with sound tells more than words

​

I am trying to silence overflow/drain pipe. I watched so many clips on youtube, read some articles and the result is: everything is working fine... But it is noisy. The first step was to change pump to DC so I can reduce flow. I helped, my Jebao pump is on the lowest operating mode (30%) and it is more quite. Next step was to install this parallel pipe with T fitting next to drain pipe and it also helped. I even installed gate valve to reduce the flow and it helped but then something inside me told me that it is risky since I have only 2 holes in my tank - drain and return.
The water flow in the box (waterfall sound) is not that annoying but I can imagine I can put the whole thing little bit upper so the waterfall sound will be barely heard but the sound from the sump is annoying. It is not consistent. It sucks more water or air from time to time and it pukes it each few seconds.
Sock in sump is not attached, I will hand it on the T fitting later, right now tank is cycling so the sock is only to simulate the setup.

Please advise what I can do to have it quite, tank is in my living room behind the couch.

 

[mfinn]

That cap needs to have a hole in it. At least a 1/8" hole. Some people will drill it big enough to add a air valve to fine tune it.

With only 2 holes, I would have planned to make a over the top return line and use the 2 holes in the overflow for a herbie style drain. Those can be made almost totally silent.
Maybe on the next one.

 

[Idoc]

I agree with @mfinn

Herbie is a good alternative and dead silent...but requires an over the rim return line.

 

[Billdogg]

That appears to be 1" pvc. As such, using a DURSO style drain like you have, the MAX it can handle is ~350gph. 300 or less is more realistic. You can restrict the output of the return pump more if you need to, but PLEASE remove the valve from the drain. Any restriction on a durso drain will greatly reduce the gph it can handle and increase the chances of something blocking it completely.

If you can remove the 90 at the bottom where it empties into your filter sock that will help as well, The "T" fitting will help prevent the gurgling in the sump. I put it on the drain line so that the leg of the T is pointing straight out and an inch or two above the water level in the sump.

 

[lost66]

Thanks for hints. Both caps (under the tank and in overflow box) have holes. I just put a duck tape to change the size of the hole. If it is completely uncovered - 1/8" - then it is more noisy.

I think I will follow Herbie path. It makes sense and it is safer than it is right now. Any recommendation about exact implementation? All I can find is quite old, like 2012-2014 and I bet it has been upgraded.

 

[mfinn]

Google Search

www.google.com

 

[lost66]

Google Search

www.google.com

Right... I am asking people here, not google.

 

[hyprc]

Right... I am asking people here, not google.

Its a drain configuration, not software

 

[mfinn]

Right... I am asking people here, not google.

It has the diagrams and instructions in detail.
I have used the herbie drain several times and could show you pictures of my current setup, which may turn out good or may not. I might be able to describe how I did it, but if I left out a step, because I assume it's common knowledge, you might not know it.
IDK, the link I posted had nice detailed pictures and diagrams with step by step instructions.
I didn't just say use google.

 

[lost66]

Its a drain configuration, not software

So it looks like it is well established standard and nothing new is there.

Right now my drain is 1.25" sch 40 reduced to 1" under the tank and return line is3/4" sch 80. I read that emergency line should be bigger than main drain. So I am thinking to change 3/4 sch 80 to 40 and put a strainer there and use 1.25" as an emergency line. And I will figure out return over the tank tomorrow when my uv arrives and I will have a complete setup of my plumbing.

I know 3/4 has limited water flow but since it was my return line and everything is in a close loop it shouldn't be a problem since the flow in the sump was ok.

@mfinn I am sorry, I thought you were just saying "hey, just google it". I did that and I found gmacreef which explains a concept pretty well I think.