need help with noisy pipes please

banditpowdercoat · #1 08-04-2009, 05:06 PM

You need to make it a Durso style drain. A open bulkhead like that(the green one) will allways fill up till it makes a siphon, then gurgle. Where the 90 is, put a T, with the top of the T capped and drill a little hole(1/32-1/16 Or best, a Adjustable shutoff) to regulate the air coming in so that is cancels the siphon. Doesnt seem like much, how your draining from the fuge to the sump, but its in essence exactly the same as tank to sump, and can make just as much noise

PS, Just drilling a hole in the 90 will work too, If you add a tube to it to make sure it comes above the waterline. Just drilling a hole, chances are water will flow out the hole, instead of air entering

Ron99 · #2 08-04-2009, 06:19 PM

With 2 drains make it a Herbie. I had only one 1.5" bulkhead to work with and as a Durso nothing I did made it quiet. I came up with a Herbie type attachment for it and it is now virtually silent.

lastlight · #3 08-04-2009, 07:22 PM

Access is really tight in there. Be tough to do any cutting/mods at this point. I tried a few holes in the fuge drain and gave up when it did nothing. At this point have the outputs of each half above and below the sump surface and that seems to have stopped the periodic gurgling. Now i just hear minor splashing but it's still too noisy I think.

For the fuge i might hunt around for a 1" valve and make it herbie. For the water change tank I only have the 1 drain. Poor planning on my part but I assumed it'd be safe since that tank only gets filtered water. Hmmm...

fkshiu · #4 08-04-2009, 09:51 PM

The reef nerd in me just wanted to complement you on that lovely Sched 80 plumbing. You didn't skimp at all.

Lance · #5 08-04-2009, 10:18 PM

Quote:

Originally Posted by fkshiu

The reef nerd in me just wanted to complement you on that lovely Sched 80 plumbing. You didn't skimp at all.

Yeah, I was admiring that as well. I cheaped out and went with schedule 40, which is thick enough but schedule 80 is like the cadillac of pipe.

banditpowdercoat · #6 08-04-2009, 10:25 PM

But isn't Sched 80 acctually Smaller ID than Sched 40? I have pipes of different sched's and they all have the same OD, but the thicker sidewalls acctually mean less flow

lastlight · #7 08-04-2009, 10:42 PM

I'm sure it means a lot less flow. But when I 'pop the hood' it makes me happy hehe.

I've reduced flow for now in both tanks so that full siphons can't form. I'm sure I don't need much in either. The water-change tank simply needs to run inline and provide me with 20 gallons to change out weekly that's got the same chemistry as the rest of the tank. The pods in the fuge certainly don't need more than a trickle either I'm guessing.

What I might also do later is use a few inches of flex hose on each outlet into the sump so the water enters more smoothly.