Sump Drain quite loud

[Eggpaul]

Finally finished my 150 gallon build and I just need some help with the drain. I have a durso with an emergency standpipe. No problem up there, overflow box is quiet other than water trickling into it. But if I power the Vector M1 past the first couple LED bars the 1.5 inch drain pipe gets very loud and bubbly. It is about 3-4 inches under the waterline.
Should I close the ball valve at all or is that not an option?
I can also remove the pvc (which thankfully I didn't glue) and cut it a little shorter, but not sure if that would help?

What does everyone think? Thanks.

 

[ntayler]

I would assume the drain pipe is gurgling because it is not at full siphon, and it is sucking some air down. How much taller is the emergency pipe than the drain? Sounds like you have to close the gate valve on your main drain slightly

 

[Eggpaul]

Emergency pipe is 3-4 inches niger. I'm assuming you are asking because when I close the valve the water will rise? I can try the valve when I get home.

 

[Eggpaul]

Is the hole I drilled too small?

 

[S-t-r-e-t-c-h]

Is the hole I drilled too small?

Probably. What you can do is drill the hole larger and then add some airline and an adjustable valve of some sort so you can tune the amount of air. Like this:

https://www.dursostandpipes.com/popular-modifications/141-air-value-modification

 

[Eggpaul]

Sorry I meant 3-4 inches higher.

So I don't have any sound from the standpipes. Isn't the drilled hole for That? Would that small hole effect the drain pipe sound all the way below?

 

[Eggpaul]

I would assume the drain pipe is gurgling because it is not at full siphon, and it is sucking some air down. How much taller is the emergency pipe than the drain? Sounds like you have to close the gate valve on your main drain slightly

3-4 inches higher.

 

[bigroost]

The noise is from the water sucking air. The only real way to fix it is to either slow the flow down until the noise stops or use a full siphon. If it were me and I had an emergency over flow I would look up herbie overflows. Basically all you would need to do is jerk that elbow off your durso pipe then use the valve to adjust the siphon to where barely anything is going down the emergency.

 

[Eggpaul]

The noise is from the water sucking air. The only real way to fix it is to either slow the flow down until the noise stops or use a full siphon. If it were me and I had an emergency over flow I would look up herbie overflows. Basically all you would need to do is jerk that elbow off your durso pipe then use the valve to adjust the siphon to where barely anything is going down the emergency.

Yes, that's something I can easily do if I can't fix this sound. But the system up top makes zero noise, I'm happy with that. I just want to fix the drain sound.

 

[bigroost]

It is creating the sound though, or atleast it was in my case. What I would assume is happening is as you increase flow the water starts to want to pull a siphon but the flow is inadequate. It winds up sucking air and maybe gurgling a bit. Its very noisy in the sump and would probably have a fair amount of noise coming out of the overflow pipe if that elbow wasn't on it.

 

[cracker]

I'd suggest making the air hole bigger also Just a little at a time.
The noise is coming from the bottom but the problem is at the top.

 

[ReeferBob]

See below video. Dursos are classically hard to tune to find that happy medium between adequate flow and flushing. Best solution is not to use a durso!

 

[Eggpaul]

It is creating the sound though, or atleast it was in my case. What I would assume is happening is as you increase flow the water starts to want to pull a siphon but the flow is inadequate. It winds up sucking air and maybe gurgling a bit. Its very noisy in the sump and would probably have a fair amount of noise coming out of the overflow pipe if that elbow wasn't on it.

There is no noise in the sump if I turn the Vectra all the way down, yes. When I turn the flow up it gets loud. Should I close the valve below a bit ? Would that increase the water in the overflow box ? I'm thinking that will help with the siphon a bit. There would be not much air.

 

[Eggpaul]

I'd suggest making the air hole bigger also Just a little at a time.
The noise is coming from the bottom but the problem is at the top.

Should I play with the valve before drilling the hole?

 

[Eggpaul]

Also, would the sound go away if the drain pipe was only 1.5 inches below the water line instead of the 3-4 inches right now?

 

[bigroost]

There is no noise in the sump if I turn the Vectra all the way down, yes. When I turn the flow up it gets loud. Should I close the valve below a bit ? Would that increase the water in the overflow box ? I'm thinking that will help with the siphon a bit. There would be not much air.

Messing with the valve isn't really gonna do anything for you because of the airhole in the cap. Normally closing the valve to allow the water to back up a bit would fix the issue but it's always gonna pull air through that hole. I really wasn't aware that a valve on a durso was a thing, usually that valve is there on a Herbie to tune the flow.

 

[Eggpaul]

Messing with the valve isn't really gonna do anything for you because of the airhole in the cap. Normally closing the valve to allow the water to back up a bit would fix the issue but it's always gonna pull air through that hole. I really wasn't aware that a valve on a durso was a thing, usually that valve is there on a Herbie to tune the flow.

Hmm, what is that hole for then? Is it better not to have it? Or is it so it won't back siphon.

 

[cracker]

Sorry I'm not sure with out knowing/seeing more. I assume the valve is on a drain ? By all means adjust & see what happens. I would "think" the syphon drain should be as deep as possible .

big roost has a point. maybe plug the hole some tape maybe & adjust the valve? see how it reacts.

 

[bigroost]

Hmm, what is that hole for then? Is it better not to have it? Or is it so it won't back siphon.

On that setup its so that it never pulls a siphon. I'm no expert but I think to make it operate quietly it requires lower flow, if you had lower flow and that hole it would make no noise and be incapable of siphoning.

 

[bigroost]

Sorry I'm not sure with out knowing/seeing more. I assume the valve is on a drain ? By all means adjust & see what happens. I would "think" the syphon drain should be as deep as possible .

big roost has a point. maybe plug the hole some tape maybe & adjust the valve? see how it reacts.

If you just wanted to see what it would be like without the hole, don't attempt to plug it, just pull those fittings off the top and leave the stand pipe. Once the water is over the pipe its the same difference, you will have to slowly close the drain to get it rise above the pipe and swap over to silence.

IF you plug the hole its gonna siphon until it drops below the elbow make a racket like flushing a toilet then repeat.