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hydro test cylinder markings

Discussion in 'Tanks, Valves and Bands' started by refract, Aug 20, 2015.

  1. refract

    refract Angel Fish

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    Hi All!
    I have recently moved to the US from Australia, and I'm just wanting some confirmation the markings used for hydro tests here. Several of the cylinders I have access to have only this marking stamped on it. What does this mean about the cylinders' test history?
    Many thanks!
    cylinder.jpg
     
  2. Wookie

    Wookie Secret Field Agent ScubaBoard Business Sponsor

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    It was new in '03, and retested by West Air Gasses in '08. It is out of hydro, and will need to be tested again.
     
    nimoh likes this.
  3. nimoh

    nimoh Public Safety Diver

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    It means that the tank passed hydro in July of 2008 by a tester identified as B336 and now needs to go in for hydro before it's next fill since a hydro is required every 5 years in the USA by the Department of Transportation (DOT)
     
  4. divad

    divad Solo Diver

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    Oh blimey.
     
  5. refract

    refract Angel Fish

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    thanks guys, so it is the same as Australia and these cylinders have been due for test since 2013...? =S
     
  6. rhwestfall

    rhwestfall Woof! ScubaBoard Sponsor

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    Yes, in the US, its every 5 years.... likely sitting in a garage/basement, or being in the hands of someone with their own (non-commercial) compressor...
     
  7. akdeepdiver

    akdeepdiver Dive Shop

    # of Dives: 200 - 499
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    Actually, the RIN stamp is read in a clockwise fashion, so this testers ID is B363
     
    nimoh and knotical like this.
  8. nimoh

    nimoh Public Safety Diver

    # of Dives: 500 - 999
    Location: Rochester, MN
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    thanks, didn't know that. As such, I should have responded "...by a tester identified by some combination of the characters B, 3, 6 and 3..." or done a little research :)
     
  9. subsdive

    subsdive Garibaldi

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    Have you tried giving a call to the guys at Ted Louis Hydrostatics ? They're quite good and should be able to help.
     

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