Float valve questions

[Heres_doe_]

What's the best float valve in your opinion? And do they just close when they go up to a certain height. The pressure from the water coming out wouldn't push it open?

 

[P-Dub]

That is the idea. I have boosted 80 psi out of my RO/DI unit and it shuts it off fine. Not all valves are created equally. Don't skimp unless you can afford the consequences.

 

[Heres_doe_]

That is the idea. I have boosted 80 psi out of my RO/DI unit and it shuts it off fine. Not all valves are created equally. Don't skimp unless you can afford the consequences.

I ain't getting more than that for pressure and i can't afford for something to mess up