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Kapsyl

Kapsyl

Specialist
Feb 3, 2024
345
Thank you. I'm considering SCBA... feeling a time crunch but trying to learn all I can to see if it's something I can make work. It's quite expensive unfortunately.

It's a very expensive way to ctb overall, but money means nothing when gone. For reference my setup cost around 600-700 dollar and that's without the make since I've had it long before considering ctb.
 
S

suffering_mo

Specialist
May 8, 2024
378
It's a very expensive way to ctb overall, but money means nothing when gone. For reference my setup cost around 600-700 dollar and that's without the make since I've had it long before considering ctb.
This is like $2500 for the SCBA method, buying everything new....I would have ZERO problem whatsoever with spending the $ if I were a single person and it weren't such a risk for me getting caught...If I succeed, my spouse will get life insurance so it's mostly just spending the $, getting caught or it not working out/getting caught with the equipment. I don't have much opportunity to get this done. I'm kinda in a time crunch because I will have time alone coming up and I am typically at home with others 24/7 almost always. Still considering things but I think I will be going to a hotel. My situation is quite complex and stakes are high. I have one of the saddest stories on this site TBH. I can still hardly believe the horrible turn of my life in the last 6 months.
 
Kapsyl

Kapsyl

Specialist
Feb 3, 2024
345
This is like $2500 for the SCBA method, buying everything new....I would have ZERO problem whatsoever with spending the $ if I were a single person and it weren't such a risk for me getting caught...If I succeed, my spouse will get life insurance so it's mostly just spending the $, getting caught or it not working out/getting caught with the equipment. I don't have much opportunity to get this done. I'm kinda in a time crunch because I will have time alone coming up and I am typically at home with others 24/7 almost always. Still considering things but I think I will be going to a hotel. My situation is quite complex and stakes are high. I have one of the saddest stories on this site TBH. I can still hardly believe the horrible turn of my life in the last 6 months.

Scba is a more expensive setup since it has little civilian use, scuba is much more affordable. Not to rain down on your parade but usually life insurance doesn't cover suicides, only accidental deaths. This may of course differ in your situation but in my case they wouldn't pay a cent for my death.

I'm sorry about your situation, my life also took a horrible turn around 5 months ago so I can understand your suffering. I also feel that time is slipping away, all through I could ctb at anytime since I now live alone it's still hard. I'm again sorry about your situation.
 
S

suffering_mo

Specialist
May 8, 2024
378
Scba is a more expensive setup since it has little civilian use, scuba is much more affordable. Not to rain down on your parade but usually life insurance doesn't cover suicides, only accidental deaths. This may of course differ in your situation but in my case they wouldn't pay a cent for my death.

I'm sorry about your situation, my life also took a horrible turn around 5 months ago so I can understand your suffering. I also feel that time is slipping away, all through I could ctb at anytime since I now live alone it's still hard. I'm again sorry about your situation.
Sorry to hear that for you too. I will recheck my policy but I recall that after 2 years, it covers suicide.

A big part of the problem with Scuba is the lack of adapters in the US. Apparently, you can get them... there are 2 pieces, but what people are finding is that they don't screw together as they need to, causing leaks. The older European adapters worked but you can't get those now. If anyone knows differently, please let me know.
 
devils~advocate

devils~advocate

Experienced
Feb 29, 2024
241
Sorry to hear that for you too. I will recheck my policy but I recall that after 2 years, it covers suicide.

A big part of the problem with Scuba is the lack of adapters in the US. Apparently, you can get them... there are 2 pieces, but what people are finding is that they don't screw together as they need to, causing leaks. The older European adapters worked but you can't get those now. If anyone knows differently, please let me know.
(sorry didnt realize the reference post was talking about scuba, not scba)
The brass adapter shown below is the US version for scba.
One can use high pressure thread sealant brushed on the threads to keep it from leaking. Its made for 5000 psi pneumatic systems.
I know this brass adapter has a small hole in the 346 thread part. Its for safety purposes. But that can be sealed over.

The European adapter is the opposite of what is shown below (which is the US version).
The European adapter is a female connection on both ends.
The cylinder connection is male & the scba reducer connection is male as well (European version).

198046 1714952102399 1718253598097
 
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kudaphillips

Student
Apr 17, 2024
178
How would it benefit from using the regular inner mask of the hood? Or are you referring to the exit bag?

I can tell from experience from using a closed constant flow setup that 10/lpm is not nearly enough, even with shallow breath 25/lpm was just enough to feel comfortable 30-35/lpm is what I'm going to use most likely.
35 lpm for exit bag ? Or for eebd
I think I found a tank...a needle in a haystack. However, can you experts explain to me....is there risk of "suffocating" feeling, once you start breathing in the nitrogen and you no longer have oxygen? If you use a SCBA system? Or any other system? Also, how loud is the release of the nitrogen? Is there a hissing sound that could be overheard if you are in a hotel? @Tears in Rain @outrider567 @kudaphillips @Kapsyl
You shouldn't feel any suffocation if it's pure nitrogen . If done incorrectly , then yes .
Yes hissing sound, but I think a hotel would be completely fine , not loud enough to alarm anyone in a hotel
 
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Kapsyl

Kapsyl

Specialist
Feb 3, 2024
345
35 lpm for exit bag ? Or for eebd

For any constant flow setups like my mask and possibly eebd. By the way how exactly airtight are these eebd hoods? Could you or someone be so kind to test if these hoods keep out air on their own. Are you able to breathe when no nitrogen is flowing? Do they form a vacuum when trying to breathe without air? Or do they allow small amounts of air too come through and relay on the nitrogen to push out the air?
 
limeoctave

limeoctave

welcome home old friend, how was your life?
Mar 24, 2024
228
Are you able to breathe when no nitrogen is flowing?
no

Do they form a vacuum when trying to breathe without air?
yes

at least mine (Draeger Saver CF)

if i remember correctly, when I closed the hole in the hose and tried to inhale, a vacuum was created, and the air did not enter the hood through the valve and elastic on the neck, even a little
 
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albstr1403

albstr1403

I’m tired
May 25, 2024
85
So we have examples of people succeeding with pretty high tech setups, mostly with SCBA, SCUBA, and Vizzy with the hood but what about with exit bags? Any CTBs with Hoods besides Vizzy?
Didn't Vizzy end up doing Sn?
I've been lurking and was wondering.. what's the benefits of scba vs eebd hood?

From what I got, scba is more expensive, but seems more reliable since it's secured on your head, simpler to assemble/has less components to fuss over, and has less possible points of failures like leaks.
 
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limeoctave

limeoctave

welcome home old friend, how was your life?
Mar 24, 2024
228
Didn't Vizzy end up doing Sn?
I've been lurking and was wondering.. what's the benefits of scba vs eebd hood?

From what I got, scba is more expensive, but seems more reliable since it's secured on your head, simpler to assemble/has less components to fuss over, and has less possible points of failures like leaks.
does the SCBA system guarantee that all exhaled air and co2 is removed from the mask immediately? if so, i guess that's the main benefit

im just not familiar with this method
 
T

Tartarruss12

Member
Jun 9, 2024
5
My concern is for whoever has to find the person who CTB; a covered head might just be more triggering or upsetting for them.
 
S

suffering_mo

Specialist
May 8, 2024
378
Didn't Vizzy end up doing Sn?
I've been lurking and was wondering.. what's the benefits of scba vs eebd hood?

From what I got, scba is more expensive, but seems more reliable since it's secured on your head, simpler to assemble/has less components to fuss over, and has less possible points of failures like leaks.
He did use SN and then used an EEBD hood, it seems. I think that's my concern with the EEBD hood.... what if his death had more to do with the SN versus the hood? There doesn't seem to be many examples of success....
 
K

kudaphillips

Student
Apr 17, 2024
178
For any constant flow setups like my mask and possibly eebd. By the way how exactly airtight are these eebd hoods? Could you or someone be so kind to test if these hoods keep out air on their own. Are you able to breathe when no nitrogen is flowing? Do they form a vacuum when trying to breathe without air? Or do they allow small amounts of air too come through and relay on the nitrogen to push out the air?
In my opinion , my eebd hood is basically just like an exit bag. The purge valve doesn't work well, so essentially air just flows out the bottom , yes you can breathe in it with no nitrogen like an exit bag ( I have vizzy exact hood )
 
K

kudaphillips

Student
Apr 17, 2024
178
interesting

did you close the hole in the hose when breathe in?
I did plug the hole, I'm sure after a few minute I would start to get air hunger just like with bag .
But if the question is "is it air tight without any gas flowing?" , this is certainly a no.
 
K

k1w1

Experienced
Feb 16, 2022
278
For those in the US, I called a couple of places about the nitrogen. I can rent the tank, which is good because I don't plan to stick around. However, I'm getting the run around when I ask for the info on the purest nitrogen they have. For the nationwide company that begins with Air, they said they have different types. That the best is "Industrial" grade. However, when I asked about the purity, the guy said he's asked before and no one has ever been able to answer that question.

The other smaller company also wouldn't tell me. They just said, tell me what you need it for and I can tell you what kind to get. Ugh.

Anyone in the US know what "Grade" to get from the Air___ Company?
The concentration is written on the abel. Industrial gas is 99.99
Do a search on AB for this beauty......35 bucks for the mask and ldv. This would have been inconcievable at this price even a year ago. The image is mobile and wont paste so you can look for yourselves. Soft rubber inner mask unlike the yellow hood....and a LDV. Ill order and report back.
Positive pressure air breathing apparatus mask and RHZK 6.8 / 30mpa air supply valve
https://www.aliexpress.com/item/100...e137cd546cf8a384523452f67ed&afSmartRedirect=y
 
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devils~advocate

devils~advocate

Experienced
Feb 29, 2024
241
The concentration is written on the abel. Industrial gas is 99.99
Do a search on AB for this beauty......35 bucks for the mask and ldv. This would have been inconcievable at this price even a year ago. The image is mobile and wont paste so you can look for yourselves. Soft rubber inner mask unlike the yellow hood....and a LDV. Ill order and report back.
Positive pressure air breathing apparatus mask and RHZK 6.8 / 30mpa air supply valve
Good find. Would still need some sort of 1st stage pressure reducer.
But I would think that shouldnt be hard to find.
The hose connection on the ldv is a quick connect kind. I think it would be the high flow (Euro) kind. Type V style (the major D manuf ldv are)
Then its just connecting that to the regulator/reducer. Regulator would need to have an outflow of at least 100 psi.


1718714491818
 
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A

Amish

Member
Jun 17, 2024
25
I'm considering the EB or SN to CTB method, depending on how much material I can gather. I have questions and concerns about the EB method:

- I found a bottle of nitrogen for sale on a beer brewing equipment website. It's a 2l x 240 bar bottle, or 480l of compressed nitrogen if I'm correct. The bottle is labelled "food-grade nitrogen". Could this have an impact on the success of the EB method?

- Is 480l enough? At 15/min, that's 32 minutes of gas, which is more than the PPHE recommends.

- Is the EB method still reliable? Is there another method like EEBD, SCUBA, SBA or does it require a larger quantity of gas?

Sorry if my english is not good, I'm using Deepl
 
limeoctave

limeoctave

welcome home old friend, how was your life?
Mar 24, 2024
228
The concentration is written on the abel. Industrial gas is 99.99
Do a search on AB for this beauty......35 bucks for the mask and ldv. This would have been inconcievable at this price even a year ago. The image is mobile and wont paste so you can look for yourselves. Soft rubber inner mask unlike the yellow hood....and a LDV. Ill order and report back.
Positive pressure air breathing apparatus mask and RHZK 6.8 / 30mpa air supply valve
https://www.aliexpress.com/item/100...e137cd546cf8a384523452f67ed&afSmartRedirect=y
so this mask should work with regulator? on constant flow?
 
devils~advocate

devils~advocate

Experienced
Feb 29, 2024
241
so this mask should work with regulator? on constant flow?
Yes with a regulator. But its not a constant flow like a hood method, it is a on-demand type of system. See image above for possible layout.
The LDV,(lung demand valve) which is the item with the big red button. It is sort of a magical valve. It only allows air (or gas) to flow when one breathes in.
The mask has ports that are one way for exhale.
This would require some sort of regulator to bring the pressure from the gas cylinder down to a level that the LDV can use.
The LDV operates at about 85-130 psi. The pressure in the gas cylinder is at least 2200 psi.
(One couldn't connect this directly to a cylinder without having some kind of regulator...the pressure alone would either blow the mask off or damage the LDV.)
 
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limeoctave

limeoctave

welcome home old friend, how was your life?
Mar 24, 2024
228
Yes with a regulator. But its not a constant flow like a hood method, it is a on-demand type of system. See image above for possible layout.
The LDV,(lung demand valve) which is the item with the big red button. It is sort of a magical valve. It only allows air (or gas) to flow when one breathes in.
The mask has ports that are one way for exhale.
This would require some sort of regulator to bring the pressure from the gas cylinder down to a level that the LDV can use.
The LDV operates at about 85-130 psi. The pressure in the gas cylinder is at least 2200 psi.
(One couldn't connect this directly to a cylinder without having some kind of regulator...the pressure alone would either blow the mask off or damage the LDV.)
oh i see, thank you. so it works similar to TIG gas welding, when you did setup needed pressure on regulator, and then the pressure is held in the hose, and only opens when you press the button, but here it opens when you inhale
 
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devils~advocate

devils~advocate

Experienced
Feb 29, 2024
241
oh i see, thank you. so it works similar to TIG gas welding, when you did setup needed pressure on regulator and then it holds it, and only opens when you press the button, but here it opens when you inhale
Yes kind of like that. TIG would have an electronic switch (foot or finger) that would open a solenoid valve.
This LDV is all mechanical and seems to be balanced with inhale of breathe to open the valve.
Its like the mouthpiece used for scuba diving. But like scuba, this system would also need a regulator/reducer to bring that pressure down.

The scba system that Gas Monkey discusses has its own regulator (called a reducer in that industry, fire fighting) that brings the pressure down to a certain level without the need of adjustments or knobs etc.

This system that k1w1 describes, doesnt have that reducer included with it. But one could use a reducer from any the scba manuf. I think they are all compatible with each other. The image I have in the post above, is a possible work-around for this reducer...to just use a conventional regulator. It just has to be one that has the connection to the cylinder tank and its capable of at least 100 psi (note some only go up to 60 psi or so).
This setup would need to be tested, it is just hypothetical.
 
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limeoctave

limeoctave

welcome home old friend, how was your life?
Mar 24, 2024
228
Yes kind of like that. TIG would have an electronic switch (foot or finger) that would open a solenoid valve.
This LDV is all mechanical and seems to be balanced with inhale of breathe to open the valve.
Its like the mouthpiece used for scuba diving. But like scuba, this system would also need a regulator/reducer to bring that pressure down.

The scba system that Gas Monkey discusses has its own regulator (called a reducer in that industry, fire fighting) that brings the pressure down to a certain level without the need of adjustments or knobs etc.

This system that k1w1 describes, doesnt have that reducer included with it. But one could use a reducer from any the scba manuf. I think they are all compatible with each other. The image I have in the post above, is a possible work-around for this reducer...to just use a conventional regulator. It just has to be one that has the connection to the cylinder tank and its capable of at least 100 psi (note some only go up to 60 psi or so).
This setup would need to be tested, it is just hypothetical.
thank you, very informative

This setup would need to be tested, it is just hypothetical.
yeah, i understand, i'm just curious. anyway, i have the eebd hood and the regulator with flowmeter and without the possibility to adjust the pressure, so in my case it won't work, and the mask isn't shipped to my country
 
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devils~advocate

devils~advocate

Experienced
Feb 29, 2024
241
The shiny metal part on the right hand side of the black wheel, is the 'reducer' or regulator for a scba system.
It brings the pressure from the cylinder down from 2200 psi to around 100 psi.
Then from there the hose from the LDV is connected to it.
1718720754361

Some of the LDVs have their hose directly connected to this reducer.
While other LDVs (newer ones) have this kind of quick connection at the end that allows one to attach or unattach the hose line quickly.
I think the quick connection is the V style. Ive tested it and this appears to be the case. (background info: there are several styles of quick-connect parts...industrial, automotive, high flow V, etc)

1718721049685
thank you, very informative


yeah, i understand, i'm just curious. anyway, i have the eebd and the regulator with flowmeter and without the possibility to adjust the pressure, so in my case it won't work, and the mask isn't shipped to my country
Well if you are in Europe, India (which where I got an LDV from)...I would imagine one could obtain a full scba system.
One would need to check out fire fighting groups as a possible source. They are always getting rid of used equipment.
Well since you know about TIG welding...there are regulators available that allow for micro control of the flow.
 
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outrider567

Visionary
Apr 5, 2022
2,813
Outrider567, have you tested the purity of the Nitrogen gas?
There has been some thought that the purity varies greatly.
My thoughts were that it usually is around 99% in most cases. Its just the number of 9s past this where different grades come into play.
Is there a particular grade & tank size one should ask for? I thought regular Industrial would work fine. This is regards to SCBA method.
I'm not familiar with the SCBA method--The company that I bought the Nitrogen Tank from said they are not allowed to sell it to anybody unless the purity is 99.0%(and since my Oxygen Level plummeted from 98 to 40 after just 5 or 6 breaths confirms this)--Greenberg said 450 Liter tank is enough(25 LPM at 15 minute mark is 375 Liters), but my own tank is much larger than that
 
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Y

youareforgiven

Member
Aug 10, 2022
34
Hi,

I have a question. I have the 8l 1,5m3 150 bar nitrogen tank with the EEBD and Europe kit regulator from esc…. I see the company does not exist anymore (is this kit/regulator still safe??!)

I was testing the kit at 15lpm. What I noticed when i opened up the valve is that a lot of nitrogen is being lost and the more I opened the valve the more nitrogen went away. Pressure went up to 500 bar.

can anybody explain how open I have to set the valve and what bar should it be?

I made a video if needed.
 
limeoctave

limeoctave

welcome home old friend, how was your life?
Mar 24, 2024
228
Well if you are in Europe, India (which where I got an LDV from)...I would imagine one could obtain a full scba system.
One would need to check out fire fighting groups as a possible source. They are always getting rid of used equipment.
yeah, i'd like to upgrade to scba, i just don't have enough money, and time to research it, and energy actually, but anyway, thank you a lot

Well since you know about TIG welding...there are regulators available that allow for micro control of the flow.
what regulators do you mean? that allows to adjust the needed pressure and not the flow?


Hi,

I have a question. I have the 8l 1,5m3 150 bar nitrogen tank with the EEBD and Europe kit regulator from esc…. I see the company does not exist anymore (is this kit/regulator still safe??!)

I was testing the kit at 15lpm. What I noticed when i opened up the valve is that a lot of nitrogen is being lost and the more I opened the valve the more nitrogen went away. Pressure went up to 500 bar.

can anybody explain how open I have to set the valve and what bar should it be?

I made a video if needed.
hi,
what type of regulator do you have? with flowmeter? or pressure gauge?

sorry, i just don't really understand how you're controlling the pressure/flow

firstly, you should close the valve on the regulator, then fully open the valve on the tank, then open the valve on the regulator according to the pressure gauge/flowmeter. i don't know what pressure is equal to 15 lpm
 
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devils~advocate

devils~advocate

Experienced
Feb 29, 2024
241
yeah, i'd like to upgrade to scba, i just don't have enough money, and time to research it, and energy actually, but anyway, thank you a lot


what regulators do you mean? that allows to adjust the needed pressure and not the flow?
Well I would say that the regulator needs to be able to handle the pressure that the cylinder has.
In the USA, cylinders of nitrogen are about 2200 psi (pounds per square inch) or about 150 bar.
This photo below is of a regulator made for a nitrogen cylinder. I believe this one is made for brewing beer.
It has a gauge for the cylinder tank pressure (maximum 3000 psi / 200+ bar).
And a gauge for the out put (maximum 100 psi / 700 kPa),

From what I have seen from the manufacturer data on the SCBA system, the pressure range output from the regulator to the LDV is about 87-130 psi.

Controlling the flow is something based on outlet size etc.....it can get complicated.
One would have to find data on the regulator about the flow rates etc.


1718803463030




There are other regulators for C02/Argon that have a flowmeter on them. They will work with nitrogen or helium cylinders (cga-580)
Most seem to go to about 60cfh max (or 30 L/m)....I just dont know if they would work with a LDV.

1718804461417


Major Manufacturer SCBA Data

1718803552619
 
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A

Amish

Member
Jun 17, 2024
25
Can a bottle of Helium >95% pure according to the seller work for the EB method?

It's sold to inflate balloons, so I think it's okay, no?
 
Y

youareforgiven

Member
Aug 10, 2022
34
yeah, i'd like to upgrade to scba, i just don't have enough money, and time to research it, and energy actually, but anyway, thank you a lot


what regulators do you mean? that allows to adjust the needed pressure and not the flow?



hi,
what type of regulator do you have? with flowmeter? or pressure gauge?

sorry, i just don't really understand how you're controlling the pressure/flow

firstly, you should close the valve on the regulator, then fully open the valve on the tank, then open the valve on the regulator according to the pressure gauge/flowmeter. i don't know what pressure is equal to 15 lpm
Hi!

I have the one visable in the picture. If i connect it to my nitrogen and put it open, the a loud noise comes from it and I feel nitrogen escaping. That's why I am not trusting my set up. Is this normal and to what psi should it be set?

Thanks for the responds. IMG 4977
 

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