Niagra falls sump drain

[cvermeulen]

OK, so I've spent a fair bit of time out in the garage when I was building my overflow, trying to make sure it'd be nice and quiet. So, I have the submerged intake, with the breather hole to break siphon... my outflow into the overflow box only drops an inch or so so it's nice and quiet... I made sure my feed to the sump was submerged so I wouldn't get splashing down there, and it all seemed pretty nice and quiet out in the shop.

Then I brought it inside.

The water sloshing down the drain pipe full of bubbles makes a terrible racket. It of course seems MUCH louder now that it's in my house than my garage. I can make the problem go away if I add a very tight restriction right before it feeds into the sump, so that the piping fills with water right up to the overflow box, and then I don't get the bubbles mixing into the flow and sloshing... BUT, I don't think this is really soemthing I want to do. If that restriction glogs up at all, I'll overflow my tank.

Anyone got any thoughts?

 

[ercnan]

Several methods.
"Durso" style standpipes.
"Stockman" style standpipes.
Throttle back the pump.
Increase the drain diameter.
Increase the number of drains.
Just search for noisy overflows and get tons of info. on the methods used to quiet them.
I have one running right now at ~1000gph through a 1 1/4 DIY PVC overflow that is no louder than a very quiet waterfall. Actually quiter than than 2 AC110 HOB's running.

 

[cvermeulen]

Several methods.
"Durso" style standpipes.
"Stockman" style standpipes.
Throttle back the pump.
Increase the drain diameter.
Increase the number of drains.
Just search for noisy overflows and get tons of info. on the methods used to quiet them.
I have one running right now at ~1000gph through a 1 1/4 DIY PVC overflow that is no louder than a very quiet waterfall. Actually quiter than than 2 AC110 HOB's running.

Maybe I wasn't clear... I AM running a durso standpipe in my overflow box. The standpipe is quiet. The only thing that makes noise is the bubbles squabbling their way down the actual pipe to the sump. Throttling back the pump does not help. The drain is already too large, hence the bubbles, and the noise. I have searched, and read, etc. I've not seen anyone with the problem of noisy plumbing, yet. This noise is not the same cause as the other 99% of noisy overflow problems - I started out with those problems, and it's gotten a LOT better since then, but I'm still not happy with it.

 

[Dr Joe]

You could try a knee-high stocking put down the stand pipe like a filter sock except longer to help channel the water and break up the air bubbles.

I think CHOMPERS did this too.

Maybe if we all chant CHOMPERS... he will stop by and share his wisdom on this too.

Dr Joe

.

 

[amehel0]

sound proof the overflow and sump

 

[ercnan]

Maybe I wasn't clear... I AM running a durso standpipe in my overflow box. The standpipe is quiet. The only thing that makes noise is the bubbles squabbling their way down the actual pipe to the sump. Throttling back the pump does not help. The drain is already too large, hence the bubbles, and the noise. I have searched, and read, etc. I've not seen anyone with the problem of noisy plumbing, yet. This noise is not the same cause as the other 99% of noisy overflow problems - I started out with those problems, and it's gotten a LOT better since then, but I'm still not happy with it.

Just re-read your first post. You were clear enough, my fault for not reading it twice the first time.
No help I know, I only had the overflow end to quiet.

 

[CHOMPERS]

Maybe if we all chant CHOMPERS... he will stop by and share his wisdom on this too.

 

[CHOMPERS]

Just kidding. I used some plastic netting that I got from the Walmart fabric dept. I made a radius of roughly half the length of my pipe and then tied a heavy fishing line to the center. I dangled that in the pipe for water to flow down. The netting expands to fill the pipe. It moves out of the way when a solid object goes down the shute. It also traps water to form a "water cap" at the top of the pipe so you don't need the "pvc fittings at the top". It is a very quiet fix to the problem.

I figured that it would need to be cleaned regularly, but the flowing water keeps it clean.