German tanks in US….DOT cert

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

Joining is quick and easy. Log in or Register now!

Ok….I think this is solved. Bottom line…use your own compressor or transfill and get someone to hydro every 5 years.

One more question: These tanks say 8.5L. I read somewhere that US and Euro tanks measure that differently. Something about water volume. That said, how would these compare in terms of max cubic feet of air to a US spec LP50 twinset? These 8.5L tanks have a working pressure of 232 bar. Reason I ask is that I am trying to decide what to replace them with here.
 
So using the formula I found on dive gear express, I came up with

8.5L x 232 bar \ 1.01 bar = 1952 L ideal
1952L/1.03=1895 L

1895L = 66.9 cubic feet

so about 133.8 cubic feet for the pair. Does that sound right?
 
So using the formula I found on dive gear express, I came up with

8.5L x 232 bar \ 1.01 bar = 1952 L ideal
1952L/1.03=1895 L

1895L = 66.9 cubic feet

so about 133.8 cubic feet for the pair. Does that sound right?

Can you please give the link for the formula?
 
Ok….I think this is solved. Bottom line…use your own compressor or transfill and get someone to hydro every 5 years.
No US hydro facility will test non-DOT tanks but if you have your own compressor, you can fill them.
 
So using the formula I found on dive gear express, I came up with

8.5L x 232 bar \ 1.01 bar = 1952 L ideal
1952L/1.03=1895 L

1895L = 66.9 cubic feet

so about 133.8 cubic feet for the pair. Does that sound right?
yup, if you get 232bar fills :wink:, I calculated with 200bar which is more the norm
 
You can over-pump those cylinders too. Loads of gas in them.

8.5 litres x 250 bar/ATA = 2125 litres of gas per cylinder.

Don't need any gas fiddle-factors as your SAC's approximate anyway.


For sidemount those tins are just about perfect.
 
No US hydro facility will test non-DOT tanks but if you have your own compressor, you can fill them.

Not true, very unlikely a US outfit will stamp them.. you can find one to test.
 

Back
Top Bottom