Just finished putting together a nitrogen exit bag setup

[outrider567]

Thank you!

Does the ball have to float up to where I marked with the red line in the image?

What do you think of click style oxygen regulators? would it be simpler or better than the argon regulator? The one I found only goes up to 15lpm.

Mine is click-style, 25 LPM is recommended for the EEBD Hood

 

[Shunya]

Mine is click-style, 25 LPM is recommended for the EEBD Hood

I can't find one that goes up to 25 where I am. I suppose I'll have to stick to the argon regulator then. Thank you!

 

[NegevChina]

That regulator looks like it will work.


I'm not sure about other countries, but in the US all inert gas cylinders use the same connection so adapters aren't required. I would guess that you won't need an adapter, but you might find more conclusive information on the other SaSu inert gas threads.


The supplier fills up the cylinder to a standard pressure, so it should be the same for any gas. The instruction manual for the meter I bought said it works for any inert gas, and I assume that's true for all of them.

Turns out the flow meter that fits the Nitrogen tank threading in my country is a CO2 flow meter. Will that still be good?

 

[ThisIsLife]

Yes, tachycardia has happened all 5 times I tested on myself, totally normal reaction of the heart, the heart doesn't like being without oxygen

Not less than a second, a minute or so, with my tests--With your oximeter on your fingers, you can watch the O2 level going down, but remember the delayed reaction--At first, you're thinking, 'is this thing even working?' the first couple of breaths, but once it goes below 80, you better decide quick to either proceeed or take the EEBD Hood off , because after I took mine off, it still dropped all the way to 40

No need to hyper ventilate in my tests at 25 LPM, or to fill up with Nitrogen beforehand, but nothing wrong with doing that if you like

This is the first time I see tachycardia mentioned with this method...

A minute ? An entire minute ?!

Sorry but testing with an EEBD is quite wrong, cause it's VERY unlikely you have time to decide to pull it off. Testing with SCBA on the other hand has the advantage of being an automatic abortion of the process if it's not attached behind your head and then it falls once your head goes down from unconsciousness.

The method clearly implies you get rid of the oxygen in your lungs and keep it that way until you slide down the EEBD that was on mid-head filling with N2 but you also have to squish it beforehand to get rid of the oxygen.

Something's wrong with what you did and you could have died without knowing and less peacefully than the method is designed to.

What do you think of click style oxygen regulators? would it be simpler or better than the argon regulator? The one I found only goes up to 15lpm.

NEVER use an oxygen regulator.

ONLY those designed for inert gases (Argon, Helium and Nitrogen)

 

[outrider567]

This is the first time I see tachycardia mentioned with this method...

A minute ? An entire minute ?!

Sorry but testing with an EEBD is quite wrong, cause it's VERY unlikely you have time to decide to pull it off. Testing with SCBA on the other hand has the advantage of being an automatic abortion of the process if it's not attached behind your head and then it falls once your head goes down from unconsciousness.

The method clearly implies you get rid of the oxygen in your lungs and keep it that way until you slide down the EEBD that was on mid-head filling with N2 but you also have to squish it beforehand to get rid of the oxygen.

Something's wrong with what you did and you could have died without knowing and less peacefully than the method is designed to.


NEVER use an oxygen regulator.

ONLY those designed for inert gases (Argon, Helium and Nitrogen)

Tachycardia is common with Nitrogen CTB, as I've explained--But I must clarify when I said a minute, I really meant less than a minute, more like 20 to 30 seconds, sorry about that--Well, of course there's 'something wrong with what I did', as I've stated in other posts, this is a dangerous test, I easily could have blacked out when the Oximeter hit 77, because the real number was actually 40, with the delayed reaction--A few more breaths and I wouldn't be here right now, no more tests for me--And, you're correct that one should never use an oxygen regulator

 

[NegevChina]

NEVER use an oxygen regulator.

ONLY those designed for inert gases (Argon, Helium and Nitrogen)

How about CO2 regulator? I just ordered one.
Its the only one that has threading compatible to Nitrogen tank in my country.
This table ShatteredSerenity posted suggests its possible:

Spoiler: Table

 

[panda55]

Is the oxygen meter necessary? Do some nitrogen tanks not have pure nitrogen?

 

[parasite_eve]

Is the oxygen meter necessary? Do some nitrogen tanks not have pure nitrogen?

Testing is best practice (trust but verify yknow) but you can check with supplier and also cross reference any grade (if applicable) w/ the standard (eg food vs industry vs xyz)

 

[parasite_eve]

View attachment 155056


The regulator did not include any sort of hose connection, just a 5/8" - 18 female outlet. I tried searching for fittings in the local hardware stores, but it turns out this is a pretty specialized connector type specific to inert gas, so I ended up having to go to a big gas supplier in the industrial part of town to find it. You'll probably want to order this online, unless they happen to stock it at the place you buy your nitrogen from (the welding shops I checked didn't have it either). The part you need is called an "inert gas nut and nipple." The kit they sold me came with a hose clamp, a 5/8" - 18 nut, and a barbed nipple sized for 1/4" ID hose.

I picked up 1/4" ID x 10 ft PVC clear vinyl tubing at the local hardware store. It's flexible enough and it doesn't have any smell, so it seems fine for this application. The hose clamp included with the inert gas nipple was too large for this tubing, so I also had to get a smaller one from the hardware store. I had to run the end of the tubing under very hot water for a while to soften it up enough to push on the nipple.

This is how nut and nipple look (if you shop online it may not include the hose clamp on the left, which is fine since it would proably be the wrong size anyways):

View attachment 155036

Thank you so much for this detail! Seems I might have the same kind of outlet and was struggling to figure out what to do for connecting to a hose barb and hose.

 

[RiverOfLife]

Thank you! This is a method that appeals to me but it seems so complicated so I appreciate you breaking it down.

 

[mando]

NEVER use an oxygen regulator.

ONLY those designed for inert gases (Argon, Helium and Nitrogen)

I have just been reading " Inert Gas Cylinder & Regulator, General Refresher Summary" written by fightingsioux,
According to him ( a welder):

It doesn't matter if the regulator is being sold as an argon/oxygen regulator or a nitrogen regulator or what gas you're using. For your purpose, any combination will work.