The only remotely possible thing I have heard of is machining the valve face down to allow 200 bar plugs, and machining in a dimple on the back side of the valve face... 
Convert to DIN or buy new?
- Thread starter TooManyHobbies
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runsongas
Contributor
since 7/8 UNF is physically smaller, it is theoretically possible to machine a 3/4 NPS neck 200 bar valve down to 7/8 UNF if you have the tools. rechroming would be an issue though.
OP
Bingo! The price of ignorance.
Still not sad about the price on the tanks. Just need to invest a little more to get moving.
noj3333
Contributor
If they're 3442psi HP tanks then inserts or new valves will fix the 'issue'... If they're 3500psi tanks, then you're correct, the only solution is go DIN or sell the tanks and get 3442psi HP tanks...
noj3333
Contributor
It's my understanding PST tanks are very high quality, with their true galvanized coating... another thing to check in to is the hydro shop when they need a hydro in the future, if I remember correctly pst tanks have a different process to bring them up to pressure for the test. If the shop messes that up they'll condemn the tanks, even though they may have been safe to use...
Google some things, and read some old posts about all this stuff...
PS... If you want to buy two 100cu/ft PST tanks let me know... might as well build your collection now that you've started!!
Google some things, and read some old posts about all this stuff...
PS... If you want to buy two 100cu/ft PST tanks let me know... might as well build your collection now that you've started!!
CuzzA
Wetwork for Hire
The invention of yoke connections makes no sense to me. I'd convert to DIN and never look back.
Scared Silly
Contributor
For the OP. Get the Atomic DIN fitting and keep the yoke fitting for when you travel to places that have nothing but yoke valves. Changing back and forth is not a big deal other needing a thin wall socket for the yoke fitting.
What is wrong with a couple first stages (one yoke, one DIN)? 
OP
I chose option CWhat is wrong with a couple first stages (one yoke, one DIN)?
Buy a new (used) DIN set, AND convert the Atomic to DIN, AND keep the yoke off to the side.
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