Overflow question. How does this sound go away?

[Jdurm55]

This is how my overflow is set up.

It sounds like water being drained down a bathtub all the time. Is there anyway I can quiet that?

 

[briancarterkc]

If you google Durso Standpipe you can find some designs that may help. I'd link to some but not sure about the rules on linking to other sites here.

 

[aaron23]

Is there a hole at the top of the outside stand pipe? In the end cap

 

[Tom Blevins]

Is there a hole at the top of the outside stand pipe? In the end cap

 

[mcarroll]

Slowing the flow will help a lot - maybe solve it.

Do you know what your actual flow rate through the drain/return is?

 

[120reefkeeper]

If not there should be.... Drill a hole in the cap . Size 5/16

 

[TaylorPilot]

Oh goodness...Yea I would either build a stockman stand pipe or buy one of these.

https://premiumaquatics.com/products/maggie-muffler-quiet-overflow-1.html

The stockman is the DIY version of the maggie muffler, and they both operate under the same principal of the durso. The advantage of the durso is they are super cheap and easy to assemble, but in an open system (you can see it) the stockman/maggie muffler would probably be a better choice aesthetically.

 

[ngvu1]

You can try putting the Maggie muffler. I think you have 2 drain pipes with the idea of emergency drain right?
Well cut one shorter and put the Maggie muffler on the short pipe....
how big is the drain pipe?

 

[mcarroll]

Also, though I don't think this is related to the noise, I don't like that ball valve!

All I can imagine is blockages due to all the surface transitions or the back of your tank blowing out when that valve gets torqued on 1-2 years down the road after it's all well-cemented on the inside. Those ball valves can be a pain to operate even when they're brand new!

Does it serve a crucial purpose in the design?

Generally, for a gravity drain you want a pure, unobstructed shot to the sump, if at all possible...

 

[Jdurm55]

There is a hole in the top cap

 

[Jdurm55]

My piping is 3/4 pvc

 

[mfinn]

I would get/make a corner over flow box, then turn the inside plumbing into a durso.
Not sure what the pump is, but slowing the flow down couldn't hurt. ( I guess it depends on how much is going through now)

 

[Jdurm55]

I have a 660 gph pump but I have it turned down a lot

 

[briancarterkc]

Yeah...a 1" will generally only handle 400-500GPH. 3/4 is less.

Also, as an aside...a little rubbing alcohol can take the printing off that PVC. Just my OCD coming out.

 

[Salt Creep]

That emergency drain is not going to do much. You really need it to be in a separate hole in the tank and plumbed completely separate. The only way what you have will serve a purpose is if something clogs the part of your main drain above the T, which is maybe a couple inches and very unlikely that is the part that would clog. Also you really should get an overflow box. I used to have a tank set up similar to this a while ago and I can't even count how many times a fish got sucked down the pipe... especially clowns that tend to sleep sideways on the top of the water.

 

[ed wicks]

You can try some Home Depot pipe insulation around the pipe to muffle it a little.

 

[benpoole28]

Larger pipe will make it quieter and more efficient. I would step it up to 1-1/4 just before the tee and ditch the ball valve, there is no need to restrict drain on that style of overflow.

 

[benpoole28]

You can all also run a piece of airline tube down the hole in the cap which will help air release from the pockets created in the pipe which is causing the gargling sound.

 

[ngvu1]

The drain is 3/4 inch? How big is the tank?

My piping is 3/4 pvc

 

[Jdurm55]

The tank is 65 gallons. I know I should I gone with atleast 1 inch but I was misinformed when I drilled the tank and someone told me 3/4 could handle a certain flow. So yea you could say I was ticked after I found out it can't.