fill own tanks questions

[brett]

I've heard about 400-700psi/minute from most of the "experienced" people that I had a chance to talk to.
just never let your tank have a chance to heat over 130/140 fahrenheit(hot to touch or too hot to touch) because the wrapping and aluminum might come apart from from each other(not exactly sure how to word it)


Kinda makes you wonder about those 12 second flash fills now doesnt it?

[fastpitch321]

I sure hope you are certified in this. There are many regulations and certifications you have to follow and have in order to fill nitrogen, or CO2 tanks.

[Rigster_TBB]

While HPA (or any high pressure gas / co2) is inherently dangerous, I think there are some people that do not quite understand the safety factors designed into a high pressure system. In the case of a 3000 PSI HPA tank. The 5k burst disks will protect the tank from a rupture. The aluminum tank itself is rated for a 3000psi operating pressure, but the tank itself will easily take over 5,000 psi without a rupture. That in no way means it should be operated at that level, because the valve is not designed to operate at that pressure, and you are negating the 3x safety factors built into the tank at its normal operating pressure to keep you (the user) safe. During Hydrostatic Testing a tank is pressurized to 5/3 its operating pressure. This translates to 5k in a 3k tank. In short, small over-pressurizations during fills is not a cause for concern. If someone goes a little over during fill so you have a full tank when it cools is normal procedure. Modern HPA systems that are kept up to date for Hydro and visual testing are 100% safe and you would have to fill a tank to insane levels to cause a rupture...
Be good to your HPA and it will be good to you...

Rigster...

*There are no laws that I am aware of (here in VA anyway) that would keep a individual from using a scuba / nitro fill setup to fill his paintball tanks. I would stick to a 3k scuba tank and 3k fills however. If you happen to be one of those individuals short on good sense, I would stay away from it in that case.

[brett]

Originally posted by fastpitch321
I sure hope you are certified in this. There are many regulations and certifications you have to follow and have in order to fill nitrogen, or CO2 tanks.

do think the people in the local shops are?
In my area a monkey could turn the nob better.

[seizurepants]

[speeddemon]

Originally posted by fastpitch321
I sure hope you are certified in this. There are many regulations and certifications you have to follow and have in order to fill nitrogen, or CO2 tanks.

There might be in your state, but there aren't any here. Or in georgia. At least anyone can rent the 6000psi bulk tanks. Or if there are any, then the government forgot to tell anyone.

Don't be scared by the horror stories, just use your head. Fill it slow, make sure the fill hose is ON the fill nipple. A loose hose instantly pressurized that high, will definately break stuff. Don't let anyone play around near the tanks, and if you get one of the bulk tanks, chain it to something so it can't fall down.

Most of all, USE COMMON SENSE. If you don't have any, DON'T GET A TANK.

[seizurepants]

true

[nerobro]

Originally posted by Creative Mayhem



What are you worried about... its Nitrogen(an inert gas) not hydrogen, or nitrous oxide(not inert and can go BOOM)

Nitrogen will not do anything, unless you have a tank issue, which could happen anyway if you were using compressed air. Inert gasses = good remember that...

CM

Actually... you're bit off there my canadian friend.

Nitrogen, at 3000psi contains more instantly available energy than an equally filled tank (I"m talking energy content) of nitrous oxide. Nitrous oxide is stored as a liquid, just like co2. But at a mere 1200psi tops versus the 1800psi co2 will hit. Nitrous oxide is normally around 700psi or so at room temprature.

Also, at "normal" pressures nitrous oxide can be used to PUT OUT fires. it's actually a very safe gas. (as gasses go...) You need intense heat and pressure to make NO2 crank into N and O2. You dont' get that untill you're inside a combustion chamber. You cannot sustain a flame with NO2 at atmospheric pressure. So.. it won't go bang.

All those green flames, the big bangs, and other fun stuff you see in the movies, are the pyro guys having a fun time. NOT nitrous bottles going off. (though that's what they want you to believe)

When dealing with non-reactive gasses, it's imedate energy available that would worry me. With a nitro bottle, all the energy will be released. With NO2 and CO2 you need to add heat to get their energy out. And will either become a cold puddle, or snow when the pressure is released. Not a giant bang.