cylinders indentification..

SINUS · 6th July 2005, 07:27

Hi folks,

Can anyone help me to Identify these tiny o2 cylinders with pic attached. I need to know there Valves Thread Size and Volume in cu.ft. - I have done checking shoulder stamps and there is no indications of Volume, except pressure rating.They are Airforce surplus items which I bought them cheap. I plan to use them for my Rebreather project. BTW- there made in USA.

Thank you all

Wei lan

USSMEG · 6th July 2005, 11:09

I may be able to look them up in some of the books I have for Hydrotesting. Can you tell me the DOT # on the top and the lenght on them? And the year of orginal Hydro?
Paul

SINUS · 6th July 2005, 11:48

Quote: (Originally Posted by USSMEG)

I may be able to look them up in some of the books I have for Hydrotesting. Can you tell me the DOT # on the top and the lenght on them? And the year of orginal Hydro?
Paul

Hi Paul,

Thanks for your willingness to help and I appreciate that.

DOT #3AA2100psi - Hydro date 93 ? (I may be wrong here.)

Cylinder lenght - 10".750 minus the valve (approx.)

I have approached three local gas companys and they have not seen these cylinders before either.

Thank you

Regards

Wei lan

dive2dive2000 · 6th July 2005, 17:35

Be carefull with these. They were discontinued because of the thin wall in the neck area. The neck is extremly small and can be dangerous pumping up to high preasure. I have a similar tank that EMS workers used to carry with them (a little under 6cuft) I re tapped the threads to except a standered scuba valve and now use it for an Argon bottle. But I never go over 2100psi. I should buy a regular tank pretty foolish on my part.

Martin

SINUS · 6th July 2005, 19:34

Quote: (Originally Posted by dive2dive2000)

I re tapped the threads to except a standered scuba valve

Martin

Thanks Martin,

I am pretty sure the neck will not accept a std. scuba valve (u.s 3/4 x 14 t.p.i threads) they are just too small, unless you have re-worked the scuba valve thread to the same original thread. Do you know what was the original thread size? NPT or NGT ?

Regards

Wei lan

dive2dive2000 · 6th July 2005, 21:34

It wont you are correct. My friend did the Machine work for me I will see if he remembers.

6th July 2005, 07:27	#1 (permalink)
SINUS Rebreather Aficionado Current Rebreather/s: Other SCR Other Rebreather/s: Other SCR Join Date: Apr 2005 Location: 137km from equator Posts: 199	cylinders indentification.. Hi folks, Can anyone help me to Identify these tiny o2 cylinders with pic attached. I need to know there Valves Thread Size and Volume in cu.ft. - I have done checking shoulder stamps and there is no indications of Volume, except pressure rating.They are Airforce surplus items which I bought them cheap. I plan to use them for my Rebreather project. BTW- there made in USA. Thank you all Wei lan __________________ "Silence Is Always Beautiful"
(Offline)

6th July 2005, 11:09	#2 (permalink)
USSMEG USSMEG Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Mar 2005 Location: Mass Posts: 276	I may be able to look them up in some of the books I have for Hydrotesting. Can you tell me the DOT # on the top and the lenght on them? And the year of orginal Hydro? Paul
(Online)

6th July 2005, 11:48	#3 (permalink)
SINUS Rebreather Aficionado Current Rebreather/s: Other SCR Other Rebreather/s: Other SCR Join Date: Apr 2005 Location: 137km from equator Posts: 199	Quote: (Originally Posted by USSMEG) I may be able to look them up in some of the books I have for Hydrotesting. Can you tell me the DOT # on the top and the lenght on them? And the year of orginal Hydro? Paul Hi Paul, Thanks for your willingness to help and I appreciate that. DOT #3AA2100psi - Hydro date 93 ? (I may be wrong here.) Cylinder lenght - 10".750 minus the valve (approx.) I have approached three local gas companys and they have not seen these cylinders before either. Thank you Regards Wei lan __________________ "Silence Is Always Beautiful"
(Offline)

6th July 2005, 17:35	#4 (permalink)
dive2dive2000 PRISM DIVER & LUVIN IT! Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Feb 2005 Location: Long Island, NY Posts: 788	Be carefull with these. They were discontinued because of the thin wall in the neck area. The neck is extremly small and can be dangerous pumping up to high preasure. I have a similar tank that EMS workers used to carry with them (a little under 6cuft) I re tapped the threads to except a standered scuba valve and now use it for an Argon bottle. But I never go over 2100psi. I should buy a regular tank pretty foolish on my part. Martin
(Offline)

6th July 2005, 19:34	#5 (permalink)
SINUS Rebreather Aficionado Current Rebreather/s: Other SCR Other Rebreather/s: Other SCR Join Date: Apr 2005 Location: 137km from equator Posts: 199	Quote: (Originally Posted by dive2dive2000) I re tapped the threads to except a standered scuba valve Martin Thanks Martin, I am pretty sure the neck will not accept a std. scuba valve (u.s 3/4 x 14 t.p.i threads) they are just too small, unless you have re-worked the scuba valve thread to the same original thread. Do you know what was the original thread size? NPT or NGT ? Regards Wei lan __________________ "Silence Is Always Beautiful"
(Offline)

6th July 2005, 21:34	#6 (permalink)
dive2dive2000 PRISM DIVER & LUVIN IT! Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Feb 2005 Location: Long Island, NY Posts: 788	It wont you are correct. My friend did the Machine work for me I will see if he remembers.
(Offline)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode