installing anti-siphon

[wjr]

what is this walmart tank exchange thing you guys
are talking about???

You take your empty tank to wal-mart, and pay them $4 and they give you a filled up tank.

Wal-Mart sends them to Blue Rhino who fills them.

[turbo chicken]

You take your empty tank to wal-mart, and pay them $4 and they give you a filled up tank.

Wal-Mart sends them to Blue Rhino who fills them.

so I can basically exchange my leaky valved 9oz ror a tanks that holds air for $4.00 cool

[wjr]

so I can basically exchange my leaky valved 9oz ror a tanks that holds air for $4.00 cool

Yep.

I exchanged two tanks with dented pin valves, rust as well as being out of hydro for brand new ones.

[Jaan]

How is that dangerous? CO2 is not nearly as violent as Nitro. CO2 is not flamable, and a very low pressure. The only problem that CO2 could cause is actually bursting or having the valve come out. Both are HIGHLY unlikely. sorta like being struck by lightning

I think you need to clarify what you're talking about, especially when replying to a thread that involves removing and replacing a valve on a CO2 tank.

First off, CO2 inside a tank under pressure can be VERY dangerous. One of the biggest reasons it's dangerous under these circumstances is that when the valve comes off, the CO2 in the tank is liquid and takes time to go from a liquid to a gas, so it acts like a rocket. Let's say that it takes 5 seconds for all the liquid (or ice) to turn into a gas, that's 5 seconds of constant thrust propelling the tank.

Second, we have someone who's obviously inexperienced taking a valve off and replacing it. That's dangerous right there. Last year a woman was killed during a birthday party. It was because someone inexperienced had installed an anti-syphon tube into a CO2 tank. When the tank was unscrewed from the gun the valve stayed in place, and unscrewed from the tank instead. Usually there's a bleed hole drilled into the side of the valve where the threads are, but it was plugged up with Loctite. In that case the valve came off, the tank flew across the yard like a rocket, and hit the woman in the back of the head, killing her instantly. It may be highly unlikely, but it does happen. Giving bad advice to inexperienced people (basically saying "don't worry about it") increases the chances of an accident dramatically.

Third, what do you mean by "not nearly as violent as Nitro"? Are you talking about Nitroglycerin? Nitromethane? Nitrous Oxide? HPA tanks are filled with either Nitrogen or compressed air. Nitrogen is what the atmosphere is mostly made up of...78.08% of the air we breath is Nitrogen. My lungs haven't exploded yet.

Forth, yes, CO2 is not flammable, but neither is "Nitro". That doesn't make it safe under pressure.

Fifth, it's not unusual for a full tank of CO2 to reach 1200 psi or more. I don't know what you consider "very low pressure", but in my humble opinion, 1200 psi is certainly not "very low pressure". The burst disks are rated at 3000 psi and I've seen a lot of them burst on a nice sunny day.