VERY SIMPLE OVERFLOW?

  • We are currently upgrading MFK. thanks! -neo
hmm, i don't think you guys get how it works - schaadrak get's it.
It has a siphon in the first loop and then the water returns to the height of the tank (at the second loop) but as schadrak said, the hole is above that level and lets air in so that the siphon can't continue past the second loop.
When the tank level rises (because of the pump) the water flows over the second loop (this is the overflow point)
At the top of the first loop there will be an air tube intake to the venturi on the pump that will draw out any air that get's in.

Fot it to work the pipe has to be a lot bigger than the pump line to allow the water to find it's own flow rate out into the sump.
The pump doesn't have to match the siphon because it's not siphoning - it is overflowing

Dr. Joe - the check valve in the picture you linked is actually in the first siphon loop - the hole in this one is where the upright tube is in that one.

Anyway, the only way to know for sure is to set it up and see so I'll post pics tonight if I get it going. :)
 
Right. IMO, there is no difference between the picture Dr. Joe provided and this set up except that the bends in the pipe loops it back onto itself rather than away from the intake. And that this one can be made with air line tubing rather than PVC.
 
don't have an opinion but want to be kept up to date :)
 
ok, i spent half the day setting up the tank and a few hours on the overflow/siphon but it seems like I need some bigger pipe.
It does actually work but it needs some fine tuning.
I was testing it in my laundry and got it almost to the point where it held the water level in a 20lt bucket steady with the pump going but I think it needs a bigger capacity overflow for the pump I've got.

Here's a pic of the tank anyway - it's native Australian themed

IMG_4102.JPG
 
Very interesting... It may work with a large hose/pipe (must flow more water than the pump can pump back into the tank.
The only thing I wonder about is if it will lose the siphon from the tank to the point where the hole is in the hose/pipe.
Cool idea though if it works correctly.
 
What happens when the pump looses power?

Will the flow continue plus come out the hole or loose syphon and not restart.

Dr Joe

.
 
in my oppinion this will work as long as the pipe has a large diameter

and to answer a few questions the hole is to stop it becoming a syphon! it is the same principle as a toilet u-bend if the pump stops pumping nothing happens just like a normat overflow

i never thaught of this before but will be stopping at the plummers on way bk fom work tommorow to pick up some supplies!!!

great idea just need the right pipe
 
Dr Joe;1605257; said:
What happens when the pump looses power?

Will the flow continue plus come out the hole or loose syphon and not restart.

Dr Joe

.
Click to expand...
My question exactly. Not a bash, just a question.
 
Hi mate
Good idea and i think this would work but i would make it out of pvc pipe not hose. What part of oz you from and what natives are you planing to have?
keep us posted:popcorn:
 
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