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IS/WAS this a J Valve?

Discussion in 'Vintage Equipment Diving' started by crzyfish, Sep 11, 2020.

  1. crzyfish

    crzyfish Nassau Grouper

    # of Dives: 100 - 199
    Location: SF Bay Area
    93
    24
    8
    This Sherwood Valve is on my PST 72. Is it missing the reserve lever? The Left port looks like hex fitting and not threaded but there's some corrosion gunk in it so it's hard to tell. The tank was full when I bought it.
     

    Attached Files:

  2. Compressor

    Compressor ScubaBoard Supporter Staff Member ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: NYS
    3,216
    1,657
    113
    NO. J valves typically has a place to attach a metal rod that goes down the side of the tank allowing the diver to pull it when they "feel" low on air.
     
  3. johndiver999

    johndiver999 Manta Ray

    # of Dives: 500 - 999
    Location: Gainesville FL
    1,217
    1,171
    113
    yes it is a j valve.. one that has the reserve removed and plugged.
     
  4. James79

    James79 Reinventor of Wheels ScubaBoard Supporter

    # of Dives: 50 - 99
    Location: Lower Alabama
    740
    925
    93
    It was a J valve. I have a couple of those that still have the reserve assembly. The non knob end on yours looks to have a plug instead of the J-valve bonnet (common conversion), and the plug seems to have been bored and tapped for an HP hose and then plugged. If you pull the smaller plug, I'll bet it's standard 3/8-24... vintage standard for all hoses, modern HP hoses are 7/16. I have a couple valves with HP ports that I use to dive my vintage double hose regs.

    v/r

    James
     
  5. James79

    James79 Reinventor of Wheels ScubaBoard Supporter

    # of Dives: 50 - 99
    Location: Lower Alabama
    740
    925
    93
    Here is the same valve you have, with the reserve mechanism in place:
    20200911_171458.jpg
    And here is a different valve with an HP port and gauge:
    20200911_171520.jpg
    Respectfully,
    James
     
  6. crzyfish

    crzyfish Nassau Grouper

    # of Dives: 100 - 199
    Location: SF Bay Area
    93
    24
    8
    Interesting. I thought it was a J Valve with the reserve mechanism removed but I've never seen one. I also have a Norris (HJ) 72 tank with a complete J Valve (same as James79) that came as a package with the PST 72.

    The gentleman I got it from was in his 80's and said he used to use it for abalone diving. He gave me his ab float, lead, and weight belts, too. It came with Dacor backpacks, same as the attached pic. The straps were hard and stiff. It has these cool handles to carry it sideways. If I use it, I'll have to replace the straps and learn to use a horse collar.
    [​IMG]
     
  7. Scuba Lawyer

    Scuba Lawyer Manta Ray

    # of Dives: 5,000 - ∞
    Location: Laguna Beach, California
    708
    2,004
    93
    Agree that it was a J-valve at one time. I have seen them plugged but this is the first I've seen where someone tapped a HP port into the plug. Like @James79 says there are many valves with an HP port built in, but this one seems home-built. Very cool!
     
  8. Compressor

    Compressor ScubaBoard Supporter Staff Member ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: NYS
    3,216
    1,657
    113
    Sorry guys. The title is misleading: "Is this a J Valve?" It's not a J valve now but as others have said. it used to be. My bad.
     
    AfterDark and crzyfish like this.
  9. crzyfish

    crzyfish Nassau Grouper

    # of Dives: 100 - 199
    Location: SF Bay Area
    93
    24
    8
    I changed the title to "IS/WAS this a J Valve?"
     
  10. crzyfish

    crzyfish Nassau Grouper

    # of Dives: 100 - 199
    Location: SF Bay Area
    93
    24
    8

    Attached Files:

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