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Install of Si Tech Trigon P Valve

Discussion in 'Do It Yourself - DIY' started by rob.mwpropane, Jun 28, 2020.

  1. rob.mwpropane

    rob.mwpropane ScubaBoard Supporter ScubaBoard Supporter

    So I figured I should post to help other people if needed, or at least give some ideas.

    I did a lot of reading, for most it seems to come down to Halcyon, Light Monkey Tinkle, and the Si Tech Trigon. Halcyon is too rich for my blood, so it was down to the other 2. The Trigon is slightly cheaper and a little lower profile so I opted for that.

    The difference between the 2 is the tinkle can be manually shut externally in the middle of a dive, the Trigon can not. Even though the Trigon can't, it would be almost impossible (let's call it highly improbable) for it to fail. There's the check valve inside the valve, and if equipped with a quick disconnect, another check valve inside it. So you'd have to have both check valves fail, or if in use the 1st check valve fail, and the catheter come of in the same dive...it "could" happen so I'm sure that's the reason why most opt for the Tinkle. In real life, highly improbable...

    Hindsight being 20/20 if I had to do the install again, I think I'd opt for the Tinkle. The Trigon comes with a port to be glued into the suit, and there's an overlap that has to come through and slightly attach to the outside of the suit. The Tinkle just gets a washer glued to the inside of the suit. Either option is doable, but I believe the Tinkle to be an easier install (but I've only installed the Trigon, so take that with a grain of salt).

    Attached are pictures of everything I have of the install of the Trigon, along with Si Techs instructions. I made the mistake of cutting the hole in my neoprene suit the size of what should have been made in a trilam, which meant that the neoprene didn't want to constrict around the port and I had to push and pull to get in in place.

    The neo requires a 35mm hole, the trilam requires a 43mm hole. I made a 42mm hole. I believe this contributed to the fail of my first and slightly to my 2nd attempt. If I had done this right, maybe it's just as easy as the Tinkle, but there's still the ridge to glue to the outside of the suit, and that's not required in the Tinkle.

    All in, I gained experience gluing, and I'm happy with the result. It looks good (I think).....let's just hope it doesn't leak!

    Edit: Should have added the cost. It was about $75-$80 for the install ordering from Seaskin. I already had the glue and the punch. I also spent another $17 on quick disconnects from McMaster Carr. 1 female end to stay on the suit, and a few extra males end because they're cheap and someone said to do so.

    stuartv, Dark Wolf, Umuntu and 2 others like this.
  2. rob.mwpropane

    rob.mwpropane ScubaBoard Supporter ScubaBoard Supporter

    stuartv and Dark Wolf like this.
  3. stuartv

    stuartv Seeking the Light ScubaBoard Supporter

    # of Dives: 200 - 499
    Location: Manassas, VA
    The first time is always the hardest. It looks like some good work you did there. Congrats.:)
    rob.mwpropane and lexvil like this.
  4. rob.mwpropane

    rob.mwpropane ScubaBoard Supporter ScubaBoard Supporter

    Thanks @stuartv. I'm really happy with it. To me it looks like it belongs / came from the factory that way. Hopefully I can test this weekend and it doesn't leak. Aesthetics are nice, but if the damn things leaks....well then they don't really matter, lol.
    Dark Wolf likes this.

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