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MSA Mark III breathing apparatus for aircraft use

Date: 3 august 2008


Database oxygen rebreathers by: J.W. Bech





Mark III


Land of origin

Unites States


Special Note: 

Apparatus for aircraft use


User group



Part no:



Working principle

chemical oxygen generation process?


Gas type

Pure oxygen


Cylinder volume



Max. cylinder pressure



Material of cylinder

Steel / Aluminium


Counterlung inspire volume



Counterlung exhale volume



Dive time duration

2 hours


Operating temperature



Magnetic signature



Weight ready to use in Air



Weight ready to use in water






Scrubber material




Oxygen Green



In 1943 58,50$ second hand market





Mouthpiece shut off valve

Y pendulum system


Full Face mask attached (FFM)

Special versions





Extra info:



Extra info:


Additional information:


Email address owner





If you have any information to add this sheet please mail it to jw.bech@quicknet.nl References to source and names will always be added!  


Info found:


Origin: http://www.therebreathersite.nl




 The Navy in cooperation with the Mining Safety Equipment Company (MSA), developed a portable oxygen generating & rebreathing apparatus that would provide and sustain oxygen provision for dirigible aircrews if required for higher altitude flight. This system, which was constructed of aluminum and painted "oxygen green",  used a chemical oxygen generation process that would provide an aircrewman with aviation grade oxygen for a specific period of time, when used in cooperation with a demand type valve. The standard US Navy system incorporated the Navy's "C" oronasal breathing mask that could be secured to the head with a strap suspension. An earlier version of this chemical oxygen generation set also used a mouthpiece very much like that used in diving sets (that is, fitted with a flange that was positioned behind the lips and in front of the teeth, so as to assure retention).   This individual chemical oxygen generation assembly could also be used in larger aircraft, but it is doubtful that this was a common practice, owing to the weight factor. By the early 1940s this system was also in standard use on US Navy non-rigid 'blimps'.]

source: http://webs.lanset.com




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