Best way to silence single drain pipe?

[ps2cho]

This is for my frag tank I just built. I have a single one inch drain and its sucking air and being loud.

 

Whats the best way to silence a drain on a single pipe setup?

[seabass]

If the sound is up top, a Durso drain should improve the situation. Do you have pics of your current setup?

[Water Dog]

I've used a stockman standpipe on a past single drain tank with great results.

[CronicReefer]

This is for my frag tank I just built. I have a single one inch drain and its sucking air and being loud.

 

Whats the best way to silence a drain on a single pipe setup?

I use what's called a wet vent. Essentially you take a 1/4" diameter tube about 4" long and glue it inside the drain pipe so it is at least half underwater and about 1-2" is above the water line. It will quiet it up significantly without much effort.

[tetraodon]

on my drain the elbow behind the bulkhead has a small hold drilled into the top, with a section of ridgid tubing inserted so its above the water line. if the water into my sock is quiet my whole system is essentially silent.

[aaron186]

If you don't want to DIY a stockman you can purchase a Maggie muffler. I put one on my tank because the drain was visible and I thought my diy was an eye sore. This looks a bit more polished but it's bigger. Google it

[ps2cho]

I have just a 90 deg pvc coming out of the bulkhead. Can I drill a hole in the 90deg bend and put some tubing on that?

[seabass]

I have just a 90 deg pvc coming out of the bulkhead. Can I drill a hole in the 90deg bend and put some tubing on that?

That should help.

[ps2cho]

Is that just drilled and siliconed in place?

[seabass]

The vent tube is just friction fit. It might take a little adjusting and time to settle in.

 

You can do something similar by replacing the elbow with a tee. Put an end cap on the top and drill a hole in it.

[ps2cho]

Ready to get going on this now...

 

My only question is how does it remove the gurgling? I mean the air is still trapped above where the elbow descends to in the piping?

[seabass]

It's actually letting air in to the pipe, not venting it out.

http://www.dursostandpipes.com/frequently-asked-questions

[AZDesertRat]

The proper water/air mixture eliminates pockets of air and gives you a smooth laminar flow. Injecting air at the right spot really works, it will even increase the amount of water that overflows.

[gulfsurfer101]

Because the air cushions the water as it falls. I run a similar drain channel in my beananimal overflow. It's this open channel that is responsible for how silent the system runs. What you have is full siphon trying to keep up with your overflow and that's why your getting a gurgling sound. It's a simple cheap fix. I'd personally run a T with a cap and an airline with valve to regulate airflow that way you can fine tune how much air your overflow will draw!

[Thunderbird311]

The vent tube is just friction fit. It might take a little adjusting and time to settle in.

 

You can do something similar by replacing the elbow with a tee. Put an end cap on the top and drill a hole in it.

I used the pvc t on my overflow. It helped a lot but was still gurgling. I ended up putting a ball valve on the bottom of the pipe right before it drained in the sump. It let me tune the overflow to match the return pump gph. Almost dead silent now.

[AZDesertRat]

If you have a single overflow you are asking for a flood by putting a valve on it. The overflow should be 100% open with no restrictions.

With the tee like you have, stick a plug or cap on the top with a hole drilled in the center large enough for the friction fit of the vent tube pictured above.

[ps2cho]

I drilled a hole and it made no difference. The noise is coming from the top of the bulkhead where its sucking air.

 

What's the fix here?

 

 

[seabass]

How far down does the vent tube go? Also, how many gallons per hour is your return pump rated for? Finally, how many gallons per hour is your overflow rated for? It might be beneficial to lower the output from the return.

[ps2cho]

I have the DC Jebao pump. Tried on the lowest (~200gph) and highest and makes no difference.

 

I've pushed the vent tube down as far as 6". With the tube removed completely, no change.

 

Overflow is rated for 1000gph

[seabass]

The only thing I can think of (short of adding a siphon drain) is to replace the elbow with a tee (and end cap). I've done it with just a hole drilled in the end cap, but you could still use a vent tube (and even add a valve to the tube, to fine tune the air intake).

 

Could you post a pic of the lower half of the drain pipe? Are you using a couple of 45 or 90 degree elbows? Does the end of the drainpipe exit above or below the water level in your sump?

[ps2cho]

Just 45's. I've tried the drain exit both above and below. no difference.

 

I really hope I don't have to drain the entire tank, put it on the floor and razor blade the overflow box off to get the bulkhead out...