High Pressure Tanks and Scubapro Reg MK25/S600

[Polar_diver]

Working in the compressed gas industries, I wouldn't trust a yoke over 3200psi. I've seen way too many pictures of pressure related accidents... Personnally, I have an old Sherwood blizzard that came with a yoke connection. I now use it with DIN for local dives and switch to yoke fitting when on vacation. This is really easy to do...

 

[Jorgy]

Interesting comment............

I use DIN myself, even on my LP tanks, because they are way cooler......

OK, truth is I have Poseidon Xstreem regs and I refuse to use an adapter.......

Only my warm water travel regs are yoked........

But you said not over 3200 psi............

My AL 80 reg is a IDI Icebreaker first stage (I know ironic I use a Icebreaker for warm water diving), on the yoke is says 4000 psi.......

I will admit that in my early days of diving, I did the English Channel with my IDI reg and when I cracked the valve the needle swung to 3600 psi, which was the first time I had seen this, but since the yoke said 4000 psi, I was not that worried.......should I have been?

I believe that Atomic regs use 3500 psi yokes........

Can you elaborate on the 3200 psi limit, and thoughts about the 4000/3500 psi ratings?

Thanks...............M

 

[scubafanatic]

......don't worry about 'overloading' your 3500 PSI yoke....as stated earlier, there's a substantial 'fudge factor' incorporated in these products... moreover, good luck even getting a fill exceeding 3500 PSI anyway...outside of one tech-friendly shop I used to patronize (before they went out of business in 2006) I've never...ever...never...ever got a fill exceeding 3500 PSI...so don't worry about it.

 

[DA Aquamaster]

By D.O.T. (Dept. of transportation) standards fill over 3300psi have to use DIN connections.

Sorry, that it totally wrong.

If anything, it is an industry standard, not a DOT regulation. The DOT could not possibly care less whether you have a yoke or DIN connection on a tank.

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Over the years yokes have become stronger to deal with increasing service pressurse. For exampel the 50's era yokw was designed for 1800 and 2250 psi tanks with 10% over fills so the service rating was a max of about 2500 psi. Later when 3000 psi tanks became popular yokes were made stronger to prevent any stretching at the higher 3000-3300 psi service pressures, still later, they got really robust with the current 7/16" yoke screw being more or less standard surrounded by a very heavy yoke, with about twice the metal as the early 3000 psi yokes and many of those are stamped with 3500-4000 psi markings.

A well designed modern yoke is not going to be any where near failure at 3500 psi.