How is this done?

[martym]

I can see that, but there is air being pumped into the vertical section, where does that air go?

[lastlight]

There is a pocket of air I think already in the top tank.

it's just pushed down and returns to the top.

[StirCrazy]

there can't be any air goi ng into that or it will reduce the vaccume which is required to hole the water colume up in the tank. Personaly I think it is done with Mirors other wise he would need to plumb a vaccume pump into the top of the tall tank to remove air and maintain the vaccume.

Steve

[ron101]

Originally Posted by StirCrazy

there can't be any air goi ng into that or it will reduce the vaccume which is required to hole the water colume up in the tank. Personaly I think it is done with Mirors other wise he would need to plumb a vaccume pump into the top of the tall tank to remove air and maintain the vaccume.

Steve

Has to be this.

And too risky for me. A pump/power/check valve failure means a lot of mopping...

[The Codfather]

On utube there is DIY that shows you how to biuld this tank.

[Floop70]

As cool as that looks I'd think it's a rather large flood waiting to happen.

[lastlight]

if you placed a mostly full pop bottle of water into the sink upsidedown quickly, the water would stay in the bottle. Could you not then have an air pump with the input inside the bottle drawing from that air cavity at the top? Blow this air into the bottom of the bottle so it just goes right back where it came from?

[sphelps]

I would assume there's a pump of some sort preventing air from building up in the column, a check valve is also likely used to prevent failure. Definitely a risky system though, I'm not that brave.