Modification to Durso Standpipe

Plan2Build · 01-19-2005, 02:39 PM

I was wondering if the modification below would work?!...because of the relative height of the waterlevel in a standard overflow using the standard Durso design, wouldn't there be an issue regarding the turnover of water at the bottom of the overflow?

I do not have my tank running yet but wanted to know if anyone has tried or is will to try such a modifcation. I think the lower intake would need to be smaller than the upper, but I am not sure.

Any engineers out there willing to help out on this?!? Sorry about the poor quality of the schematic....

P2B

jnbahwkins · 01-19-2005, 03:02 PM

I think if you put the bottom one in,the top will barely see any water unless you have alot of flow or use a valve on the bottom intake.

JohnO · 01-19-2005, 05:13 PM

I agree with John, dependant on the pump volume the flo would almostcertainly be taken up by the bottom one. I also think it would be quite noisy.

If the lack of water movement concerns you, just make the Durso shorter than normal :-)

John

Plan2Build · 01-19-2005, 05:22 PM

The size of the intakes are just for illustration......I would think that the lower intake would need to be much smaller. Anyway, it was just a thought. It seems that it should be possible to allow some sort of flow from bottom, middle, and/or top.

Just throwing it out there in case there are any designers willing to take a shot at it.....

P2B

Birdlady · 01-19-2005, 05:48 PM

Water in the overflow boxes churn away! *I don't think there is a stitch of static water in there...I have a 58 gallon and use an 800 gph overflow and have it maxed out.....that water is really moving!

Matt Rogers · 01-19-2005, 09:21 PM

I'm with Sue.. nothing stays in the overflow for long, I'd stick with the top one.

OldandNew · 01-20-2005, 07:33 AM

Yeh, I'm in agreement here. The overflow gets rapidly turned over. There is no need for multi inputs. The hobby is complicated enough. I'm a KISS person, myself.

KISS=Keep It Simple, Stupid.

Cheers,
Ray

Plan2Build · 01-20-2005, 07:49 AM

Thanks Ray......

I will heed everyones advice. Never having operated an internal overflow before, it is difficult to envision the turnover of the water at the bottom while only draining from the top.

I did see a standpipe that had 3 holes (I think) but I don't remember who made it....I have to keep looking, I will find it. That is where the notion came from.

P2B

jnbahwkins · 01-20-2005, 08:26 AM

everyone has a operated a internal overflow .
Look in your toilet tank.
lol

Plan2Build · 01-20-2005, 08:35 AM

Good point!!.....and to that point, you can have a toilet on multiple floors connected to the same stack. I guess its the continous drain that makes the difference!!!

Thanks for the humor...I needed it!!

P2B