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#1
12-19-2008, 11:56 PM
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Interesting idea, although I am having a bit of trouble conceptualizing how you would prevent most of the water from going down the larger emergency drain during normal operation.
If you somehow designed some kind of a weir that directed the water only into the smaller interior drain, there may be some difficulty with tuning since you'd have trouble see how close the interior drain was to being "full". In a standard Herbie this is easy because you can observe the water level in the overflow space. It would be difficult to do the same in your design. You can't even observe which pipe (inside or outside) the water is exiting from in the sump since a truly silent herbie requires the drain pipes to be submerged in the sump. 
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#2
12-20-2008, 01:33 AM
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I used a design like that about 5 years ago as one of my first ones.. didn't like it as it was hard to quiet down even with external durso's and it plugged up with algae causeing me to have to clean it almost every day.
Steve
__________________
 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*Some strive to be perfect.... I just strive.
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#5
12-29-2008, 04:23 PM
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Check out Herbie style drains. If you're going to restrict flow with a gate valve, you're best off using a second "safety" drain like the Herbie's do. Interesting idea, but my first concern would be how quickly that would likely plug up, and as Stir Crazy stated, it's a definate likelihood.
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