CO2 regulation with a ball valve.

[THEMOST]

Would it work if I got a fancy metal ball valve and placed it between an air chamber and a CO2 tank and tried to slowly open it to regulate the amount of air that goes into chamber manually???????

[tntlly]

i have a one inch ball valve laying around and it says not more than 600 psi on it, and co2 is like 800....

also, before i even saw the rating i tried that and even if you have a good seal on the threads, the co2 finds a way out when you have the valve closed

[Brian the brain]

If you have the material to withstand 900 psi you could make a meterpipe.
Open one ballvalve, fill a precalculated volume, close the ballvalve.Then open another ballvalve wich leads to the chamber.....

the concept is simple...finding the material however is not..

[mark.f]

McMaster! They have all the stuff to make the thing you describe.

I would just need a welder and I'd be set.

[KVINCEO]

if your useing a paintball co2 tank.. ball valves work. i think there might be a type of reg in the tanks valve tho. but dont attemp to reg it. just use a steel chamber. and because its at a higher psi, you can have a smaller chamber. i might be off, maybe paintball co2 tanks have a lesser psi than the big filler tanks. but i use em all the time on my cannons unregulated

[THEMOST]

If you dont regulate it wouldnt the thing soot with 800psi?? That's lethal with a paintball and I want to play with friends. I could understand it if there was a small air pressure tank (which you said), but my solenoid valve still couldnt handle over 140psi of wind blast. I think that that one idea of having a steel precalculated volume chamber with ball valves on bothsides would work.

Brian the brain, could you tell me what porportions I would need to fill a 1' long, 2"pvc pipe with 80 psi?? That would be freaking sweet if you could tell me that so I dont have to keep trying different sizes of iron pipe.
A 800-1000psi CO2 tank is waht Id use.

[tntlly]

co2 is cold, it makes pvc brittle. you can buy one foot sections of threaded metal pipe at home depot

[THEMOST]

...oooo...that's not good. How bad is the cooling effect? Could it withstand 100psi?

[tntlly]

i don't know, i haven't done co2 with pvc because all i've heard about it was bad, im sure you could get away with it a few times but each time your pvc would be more likely to blow. if you want co2 just do something like this.
<a href="http://biketiresdirect.com/productdetai ... 33">here's a link to the bike tire inflators</a> you can buy them just about anywhere

edit: oops forgot the link to the post mentioned below <a href="http://www.spudfiles.com/forums/viewtopic.php?t=244"> here it is</a>

[judgment_arms]

Correct me if I’m wrong but, if you could fill bike tires would it not also be reasonable to assume that you could fill an air-cannon to a reasonable presure?

[tntlly]

yeah, but if you have a large chamber your 800 psi thats in the little cartridge expands a lot so it's not 800 psi anymore, the same idea as the way a big tank takes longer than a tiny one to fill to, let's say, 60 psi with a pump. the post about the barrel sizes expalins it as well

[THEMOST]

...this really sucks... I've got all the parts and there all measured out and metal pipe could not work with the barrel inside the chamber... Is it really that hard on the pvc? Do you know what the actual temperature is because I know that pvc is used outside in the winter for stuff...but its probably not pressurized then either is it...

[CS]

Im tired of seeing that f*cking face with the camera...

Anyway, as I understand it to be the reason a ball valve is not used in such system is there is a chance that the exiting gases when exiting will in some cases 'freeze' your valve open. Id condemn the procedure a bit risky.

Might look like <a href="http://www.cartoonstock.com/newscartoon ... g">this</a> eh?

[THEMOST]

...dont CO2 tanks have flow regulators. I would think that having that would prevent freezing.

Get used to my face I was going to change it but ya know...I dont think I will now.

[sv490665]

What i wanna know is what psi a typical paintball CO2 tank is charged to. I have a 9oz paintball tank and a 16oz paintball tank and i wanna know what pressure they're at on a fresh charge... anyone know?