US Navy Tests

[Scuba446]

I'm seeking info on WHAT the US Nanvy guidelines are and how they test regulators.

Anyone have any info on this?

 

[The Chairman]

I haven't seen him on in a while, but I just PMed him to see if he will come back and play.

 

[detroit diver]

I didn't think OUR regulators needed to be tested by the Navy!!

 

[O-ring]

I'm seeking info on WHAT the US Nanvy guidelines are and how they test regulators.

Is this because of that Scubapro thing?

 

[Rick Murchison]

Well, here's part of it:
"The three most commonly accepted standards for breathing machine requirements are:
U.S. Navy Class B: At 132 feet with 1,500 psi supply pressure and 25 breaths per minute of 2.5 liters, the regulator’s work of breathing (WOB) needs to be less than 1.4 joules per liter.
NOTE: Joule is the absolute meter equaling the unit of work or energy required. One joule is equal to approximately 0.7375 foot pounds.
European Standard (CE): At 165 feet (50 meters) with 725 psi (50 bar) supply pressure and 25 breaths per minute of 2.5 liters, the regulator’s WOB needs to be less than 3.0 joules per liter.
U.S. Navy Class A: Able to pass the same criteria as Class B, but at 198 feet."
-------------------------
Rick

 

[omar]

Rick,

I assume that this is for air?

omar

 

[Rick Murchison]

omar once bubbled...
Rick,

I assume that this is for air?

omar

I assume so too... but the source didn't say.
I have a line of communication into NEDU I'll try to use to get the real answer.
Rick

 

[boomx5]

That was a good one DD.

 

[detroit diver]

boomx5 once bubbled...
That was a good one DD.

At least SOMEONE laughed at my joke!

 

[Scuba446]

No,
Its based on a diagram I saw on Beauchat's web site about cracking pressures, etc.