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Steel tank questions

Discussion in 'Tanks, Valves and Bands' started by BigRed96, Aug 20, 2020.

  1. BigRed96

    BigRed96 Nassau Grouper

    # of Dives: 100 - 199
    Location: New Richmond, Oh
    191
    85
    28
    I was planning on putting some k valves on them as they have the old J valves now. The place that does my hydros has done a old aluminum tank made out of the bad alloy so I think they should do them no problem.
     
  2. KWS

    KWS ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 500 - 999
    Location: SE TEXAS
    4,933
    1,264
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    volume should be a simple thing of cuft or liters divided by bar. use roughly 28 liters to a cu ft. and make the pressure in bar. 2037 / 168 bar or a 12.1 liter tank.
     
    BigRed96 likes this.
  3. rjack321

    rjack321 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Port Orchard, WA
    10,442
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    Drain them and pull the valves
    Peek inside with a flashlight? Is there hideous rust then then may fail hydro or vis. If not it's worth stripping them.

    Citri-strip removes vinyl but it needs to be warm out to work.

    Absolutely no bedliner stuff you are just asking for corrosion. Leave them bare galvanized.
     
    BigRed96, AfterDark and Dark Wolf like this.
  4. ScubaBunga

    ScubaBunga Nassau Grouper

    # of Dives: 500 - 999
    Location: wright city, mo
    195
    128
    43
    well aluminum v. Plus-ing steels are apples and oranges. They have to have old values for the ree and none of the manufacturer data is available, which is why my shop won’t plus mine. But good luck, I like the extra 10%.
     
    BigRed96 likes this.
  5. captain

    captain Captain

    10,307
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    J valves make good carry handles, no need to replace them.

    Gavilite is absolutely the best. Do not use the spray can buy a quart can and apply it with a foam roller, 3 coats. Let it cure 2 weeks before putting it in service.

    ZRC Galvilite
     
    BigRed96 likes this.
  6. BigRed96

    BigRed96 Nassau Grouper

    # of Dives: 100 - 199
    Location: New Richmond, Oh
    191
    85
    28
    I have to admit that I am new to the whole j valve deal. I understand it’s a reserve. From what I read it advised the j valve be disabled. Has anyone disabled the j valves? Also, where does everyone get their service kits for their j valve?
     
  7. captain

    captain Captain

    10,307
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    Why disable it, just don't use it. When the lever is in the down position it is no different than a K valve. That's what I do, all except one of my tanks have J valves.
     
    BigRed96 likes this.
  8. captain

    captain Captain

    10,307
    10,651
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    DSC02061 (Small).JPG
     
    Bob DBF and BigRed96 like this.
  9. BigRed96

    BigRed96 Nassau Grouper

    # of Dives: 100 - 199
    Location: New Richmond, Oh
    191
    85
    28
    Is it possible to run doubles with the j valves or do the valves get replaced buy the manifold? I believe I have seen both ways.
     
  10. Scared Silly

    Scared Silly Regular of the Pub

    # of Dives: 500 - 999
    Location: on the path to perdition
    5,804
    1,409
    113
    J valves can be used on doubles, exact same principle as on a single. Only one side will have the lever.
     
    BigRed96 likes this.

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