I have dived Cooper hoses on my Mk 15.5 for quite a while. After more than a decade, they are in need of a refresh, so came here to see where everyone sources theirs. And that was when I found some "contraindications" on Cooper hoses underwater. Why would the US Navy say, use Cooper hoses for testing their latest 3d-printed titanium Mk 29 hybrid hard hat rebreather, if Cooper hoses weren't designed for use underwater?
If Cooper hoses are so dangerous, why does the US Navy use them for their UBAs?
- Thread starter teksimple
- Start date
Please register or login
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
- Ability to post and comment on topics and discussions.
- A Free photo gallery to share your dive photos with the world.
- You can make this box go away
- Messages
- 14,064
- Reaction score
- 11,177
- Location
- Port Orchard, Washington State
- # of dives
- 1000 - 2499
Because they say "not for underwater use" on them?
- Messages
- 14,064
- Reaction score
- 11,177
- Location
- Port Orchard, Washington State
- # of dives
- 1000 - 2499
Also I am not sure where you got the impression that DoD or the Navy are bastions of "fit for purpose" or health & safety or otherwise. They do all kinds of dubious stuff when it suits their operational needs. Everything from Agent Orange, AFFF PFAS firefighting foams, to Iraqi burn pits, and ignoring contaminated groundwater serving tens of thousands of troops for decades.
mr_v
Contributor
There is a right way, a wrong way, and a Navy way. At least that's what I heard from the folks who served. Doubt that Coopers present any significant issues for prototype testing. Would I use them on my breather? Possibly.... Possibly not.
- Messages
- 14,064
- Reaction score
- 11,177
- Location
- Port Orchard, Washington State
- # of dives
- 1000 - 2499
So you are saying that hoses that the military has labeled "Hose, air breathing" for decades (and decades) are suddenly no longer labeled or appropriate for our tax dollars to have the military purchase as "hose, air breathing"? And where is the source of the info describing unknown offgassing from "hose, air breathing" compared to apparently known and benign offgassing chemicals from "hose, air breathing" paid for our tax dollars and manufacturered by someone other than Herbet Cooper?
- Messages
- 14,064
- Reaction score
- 11,177
- Location
- Port Orchard, Washington State
- # of dives
- 1000 - 2499
Huh? What are you talking about? The Cooper CCR hoses are labeled "Not for underwater use". That's it.
There is nothing on them about use as breathing hoses or not. At least one (yes competing) CCR manufacturer (ISC) building for the Navy has claimed they were never tested in breathing applications at all. You'll need to dig through the TDS wayback archive to find those claims, Leon doesn't post here like they did over there 10+yrs ago. You'd think that Cooper would actually provide some sort of testing if they had it.
Have you ever looked in the cockpit of miitary planes? Most are decades behind airline and cargo planes in terms of technology and guidance systems. The government is slow to adapt due to beaurocracy. A friend I met in fundies was a high level navy diver who's job it was to test new equipment and make recommendations for high level dive teams such as seals. Eventhough he was trying to "modernize" military diving as his job, when he made recommendations it was years and years before the recommendations were follwed up on. He just constantly "chased his own tail" Just because the navy uses them doesn't mean it's safe.
You should start burning trash in your yard using diesel. Stand by it and man it the whole time breathing it in. It's safe because the military does it. Well maybe did do it it since I think they got sued pretty badly.
You should start burning trash in your yard using diesel. Stand by it and man it the whole time breathing it in. It's safe because the military does it. Well maybe did do it it since I think they got sued pretty badly.
So you are saying that the Herbert Cooper hoses peeps purchase for CCR for various distributors like Sub Gravity are different than the hoses that us tax payers have funded the military for decades (not just Navy, lol, it is every service some very basic OSINT shows) to purchase as "hose, air breathing" ? I worked with the military for more than a decade, of course their bureacracy and safety standards are shite, but they still buy hundreds of thousands of our tax dollars worth of hoses labled "hose, air breathing" from Herbert Cooper.
