Modification to Durso Standpipe

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

 

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.

 

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

 

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

 

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!

 

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

 

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

 

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

 

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

 

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