Method As is well known, there is no need for a regulator in exit bag.

[meideprac]

I know this thread is going to be controversial, but it's true. If you have an inert gas like pure nitrogen or helium, you don't need a regulator.

In inert gas CTB, regulators have always been a headache. Proper flow, blah blah. Mathematical figures make you difficult.

But it's simple.
As is known in advance through PPH, we only need 15 to 20 liters of inert gas per minute.

The way to measure this is very easy.
Just open the valve enough to fill up the 15L plastic bag you have in a minute.

Measure a minute timer with your iPhone, and it takes about a minute for a 15L exit bag to fill up with nothing. It doesn't have to be perfect.

You can measure a flow rate of 15 to 20 liters per minute with this method, which can be applied to your CTB.

Don't do anything stupid looking for a regulator.

 

[EmptyBottle]

that is an interesting way of filling... also, "15L secret bag?" is "15L sealed bag?" (just to confirm for certain)

 

[meideprac]

that is an interesting way of filling... also, "15L secret bag?" is "15L sealed bag?" (just to confirm for certain)

Thank you for your point.

 

[sucktobeagdguy]

I thought about your method as well when I couldn't find a flow meter that fits my cylinder, but I guess some people (including myself) would rather putting in extra effort to minimise the possibility of failure, as it can turn you into a vegetable. I am considering the scba method and even that I think it still isn't reliable enough, you can never be too careful.

Also from what I heard turning the cylinder valve on without regulator/pressure reducer can be quite dangerous, and you still need a regulator to connect a hose to you cylinder no?

 

[telekon]

I thought about your method as well when I couldn't find a flow meter that fits my cylinder, but I guess some people (including myself) would rather putting in extra effort to minimise the possibility of failure, as it can turn you into a vegetable. I am considering the scba method and even that I think it still isn't reliable enough, you can never be too careful.

Also from what I heard turning the cylinder valve on without regulator/pressure reducer can be quite dangerous, and you still need a regulator to connect a hose to you cylinder no?

can it though? how do we know it can turn you into a vegetable? i thought inert gas was a better way to go because people who failed attempts walked away without any effects at all

 

[sucktobeagdguy]

can it though? how do we know it can turn you into a vegetable? i thought inert gas was a better way to go because people who failed attempts walked away without any effects at all

That's just what I keep hearing from others on this forum. I think people suggested that if something goes wrong maybe 5 or 6 minutes after the person becoming unconscious, then the person will likely have permanent brain damage which can result in becoming a vegetable?

I also remember someone came back to this forum after a while and suggested that he/she had a failed attemp resulting in a minor permanent issue with his/her eye.

But yeah we don't know if fail attemps can really turn someone into vegetable, but at the same time we also don't know if they really had ctb successfully, because most of them just disappeared, maybe some of them are in hospital after their attempts? We can only assume they have passed away.

But anyway sorry for being so negative, I am not scared of death but I am really scared of surviving with irreversible damage. That's why I think it's better to be more cautious, better safe than sorry right? ;)

 

[It'sMyLife]

I know this thread is going to be controversial, but it's true. If you have an inert gas like pure nitrogen or helium, you don't need a regulator.

In inert gas CTB, regulators have always been a headache. Proper flow, blah blah. Mathematical figures make you difficult.

But it's simple.
As is known in advance through PPH, we only need 15 to 20 liters of inert gas per minute.

The way to measure this is very easy.
Just open the valve enough to fill up the 15L plastic bag you have in a minute.

Measure a minute timer with your iPhone, and it takes about a minute for a 15L exit bag to fill up with nothing. It doesn't have to be perfect.

You can measure a flow rate of 15 to 20 liters per minute with this method, which can be applied to your CTB.

Don't do anything stupid looking for a regulator.

Have you tried it ? If so what size tank are you using? I'm not disagreeing with you because I wouldn't have thought of it . To me it sounds like with the very high pressures in these tanks when full it would be difficult to accomplish. And as the tank goes down the rate would go down. Interesting thought I think and worth a try but I do have my doubts