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Halcyon valve stems

Discussion in 'Tanks, Valves and Bands' started by decompression, Feb 17, 2019.

  1. decompression

    decompression Instructor...seriously...

    # of Dives: 5,000 - ∞
    Location: Victoria, BC, Canada
    3,797
    1,357
    113
    Anyone know if a Halcyon valve stem (manifold) is a standard valve stem? I’ve got a bent one so I’ll do a complete rebuild but need a new stem.
     
  2. tmassey

    tmassey Barracuda

    # of Dives: 200 - 499
    Location: Shelby Township, MI USA
    360
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    I can’t speak for Halcyon valves directly. I believe at one point they were Thermo, but I believe that changed at some point, too. In other words, “Halcyon” might not be enough.

    There are several very similar stems. Some have two Teflon bushings (some of same shape, some of different shapes) and some have one Teflon and one o-ring, though the stem dimensions are the same. Maybe a picture of the stem would help?

    In my experience, the valves I have personal knowledge of (mainly Sherwood and Thermo) use the same shape stem, but different varieties of Teflon and o-ring configurations. But my understanding is that the stems and packing together are interchangeable within the valve bodies.

    I had an issue with a bent stem that put me somewhat far down the rabbit hole. I don’t know if this will help, but I’ll include it here: Thermo Valve copper crush ring
     
    decompression likes this.
  3. decompression

    decompression Instructor...seriously...

    # of Dives: 5,000 - ∞
    Location: Victoria, BC, Canada
    3,797
    1,357
    113

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