The quiet tank challenge.

[Erick]

So here's where I am posting my "how can I make tank quieter?" pictures.



Attached files /attachments/sites/default/files/IMG_0083.JPG /attachments/sites/default/files/IMG_0086.JPG

 

[Erick]

The pictures aren't that great, since it's hard to get behind the tank with my phone. I think it would be even harder with a camera. So the drain pipe is the solid upside U. The return is the clear pipe.

 

[tuberider]

What kind of noise is it making? Is it flushing? Slashing? Gurgling?

The first thing I see is that the stand pipe is pretty low, that would cause some splashing from the cascading overflow.

 

[tuberider]

Also, I just noticed in your tank thread that your return pump runs 1350GPH, that is way too much flow for that single overflow and way too much flow for a single 1" bulkhead.

 

[Erick]

It's making a gurgling noise. I think the pump can be dialed down.

 

[tuberider]

Water is moving down the standpipe so fast it is drawing air at a rapid rate, that is actually good, if it is flushing that indicates that you have elbows that are impeding a consistent flow. Gurgling means too much water too fast most of the time

 

[rygh]

A thought is to drill a couple of 1/4" holes near the bottom of the pipe.
Best if you have spare pipe to test this with, since it is destructive, and can be done wrong.
The concept: Adding holes allows a lot of water to enter at the bottom, thus
the velocity of water near the original head of the pipe is much lower, so you do not suck air in.

 

[tuberider]

It's a durso standpipe, no need for drilling as it is already set up for a quiet return

 

[177ike]

Gate valve on return side.

 

[177ike]

Gate valve on drain side.

 

[northbay-reefer]

Use a smaller return pump, get rid of the noise and save energy at the same time

 

[houser]

My tank is so loud that if I cared I'd have a serious case of envy.

Having put water through my floor before you'll never convince me to put a valve on the drain that isn't 100% open. Murphy swung by my flat once and...

 

[GreshamH]

Gate valve on drain side.

Given his pump is over sized and he's pushing the limit to the bulkhead, your suggestion would overflow his tank

 

[houser]

I didn't even catch the type of valve that was mentioned!

 

[Erick]

I think the idea for having the bigger pump size was to be able to add a chiller on one pump. The pump flow is adjustable though.

 

[anathema]

I think if you used a larger fuel tank, and sourced a marine bilge pump, you could use a chainsaw motor as your return pump. Then you wouldn't hear the overflow as much.