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How to Service a SiTech Exhaust Valve

Discussion in 'Exposure Suits' started by Deep South Divers, Feb 11, 2019.

  1. Deep South Divers

    Deep South Divers Loggerhead Turtle

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    I've made a ton of instructional videos and work videos for our clients at www.youtube.com/deepsouthdivers if you're interested. There's a lot of good stuff there on drysuits, drygloves, and dryglove rings too.

    Here's an example:

     
  2. Deep South Divers

    Deep South Divers Loggerhead Turtle

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    www.diverightinscuba.com

    Tell Augie and Chris that SeaJay sent you and loves them.
     
  3. divad

    divad Solo Diver

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    I can't find your instructions for options on replacing shoulder dump with wrist dump. I think one alt was to use the wrist-dump top part with with the adjustable bottom part, for at least a lower profile? As I recall, there were 2 or 3 options.
     
    Deep South Divers likes this.
  4. Deep South Divers

    Deep South Divers Loggerhead Turtle

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    I think the video that you're looking for is this one:



    It's a fun exercise in using various parts to get done what you're looking to get done. :D

    Be forewarned... After about 500 dives on the Trigon/cuff dump modification, I DID experience a very odd situation: The cuff dump and the first Trigon check valve vapor locked themselves together after a giant stride entry from about 10' in the air. That is... The second and third check valves got locked together in just such a way that they would allow no air in or out of the suit at all. Very weird, but very true! A once-in-500-dive issue, but not one that I was able to remedy until I got out of the water and removed the valves and "reset" them.

    The problem came from the cuff dump check valve opening so violently (from the large giant stride) that it sealed up against the Trigon's bottom - preventing exhaust out. At the same time, the Trigon's bottom most check valve closed against the opposite side, and a seal was formed that wholly prevented any air movement either in or out.

    As such, I no longer recommend using the bottom half of the cuff dump. Simply use the top half of a Trigon pee valve with the lower half of the standard adjustable exhaust valve (that has a filter in it), and use the system as a double redundant check valve rather than a triple.

    I have not ever had a double redundant check valve system leak.

    Nonetheless, disassemble and clean out the exhaust valve system periodically anyway... I recommend every 20-30 dives depending on how silty your water is.
     
  5. divad

    divad Solo Diver

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    Yeah, that's the one. Thanks! I might have found it had I not repeatedly searched DeepSeaDivers like a monkey with his thumb on the "more cocaine" button. Great idea!........also....., I have no intentions of doing a 10 foot giant stride thanks.
     
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