Durso Style Drain Whistling

[Wayne]

I ended up replacing the pipe that was making the whistling noise with the old one and the noise went away. Heres the difference in bubbles, way more on the the right hand side:

[Lampshade]

Oh wow, that's way better. Nothing's comming out of the Tee, so that's proabbly sucking air in and making it worse. At the top of my duroso I've extended the down spout a bit where the water is drawn in. I threw a 5" piece of PVC on there just to bring the intake below the bubbles entering the overflow, might help a bit, but air's still added in the air holes at the top.

With the tee I wonder if adding a gate at the bottom and a piece of pipe going up would work. And adjudst the gate valve to make the Tee JUST start to flow over. Like this:

Tank
| |
| |
| |
| |
| |
| |
| |....__
| |....| |
| |....| | <Sump Water Line somewhere around here
| |__| |
| ____|
| |
| |
|X| <--Gate Valve
| |
| |
| |

[intarsiabox]

Wayne, have you tried throttling down your return pump? I have tons of bubbles on the intake side of my sump but most are gone before they even get to the first divider. I was having lots of micro bubbles at first getting into the display tank but after tweaking the return pump discharge they all disappeared. My set up is nothing special, just a regular durso pipe with a hole in the top and then another 1/4" hole in the pipe just above the water surface (eliminates surging) and the pipe extends about 3" into the sump water.

[Wayne]

Originally Posted by intarsiabox

Wayne, have you tried throttling down your return pump? I have tons of bubbles on the intake side of my sump but most are gone before they even get to the first divider. I was having lots of micro bubbles at first getting into the display tank but after tweaking the return pump discharge they all disappeared. My set up is nothing special, just a regular durso pipe with a hole in the top and then another 1/4" hole in the pipe just above the water surface (eliminates surging) and the pipe extends about 3" into the sump water.

Just did right now. Definate reduction in bubbles, I of course set it to max and then installed . Seems to help, did you ever get a draining sound when you had this tank?

[intarsiabox]

I did until I drilled the hole in the pipe just above the water line, after that it was quiet. Water does come out the hole though, so if you try it make sure the hole points into the tank.

[Wayne]

Originally Posted by intarsiabox

I did until I drilled the hole in the pipe just above the water line, after that it was quiet. Water does come out the hole though, so if you try it make sure the hole points into the tank.

Which water line? Was the hole in this flex line with the plastic screw in it? Cause I didn't know where this pipe connected to

[intarsiabox]

I think it was the line with the screw in it. It has a very course thread that I was using to adjust water/air flow but the screw is not needed. The line I drilled is the drain line from the DT just above the water line.