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Thread: ULT minimum pressure?

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  1. #1

    ULT minimum pressure?

    Out of pure curiosity, what is the absolute lowest pressure required to allow the ULT to work properly? As in, minimal risk of short stroking.

    Thanks all.

  2. #2
    Join Date
    Sep 2008
    Location
    Ohio
    Posts
    4,325
    Pull pressure?

  3. #3
    Return pressure

  4. #4
    It varies so much marker to marker there is no way to tell you that, really.

    Its not recommended for classic, but some people have success just dropping it in, some dont.

    An x valve or any of its variants regulate to 600 psi or so, the classic is around 400 psi...

    So if I were to give you a direct answer... 600 psi, thats what it was designed for

  5. #5
    Cool. Thank you. It's just a random question that popped in my head. Lol.

  6. #6
    Join Date
    Oct 2006
    Location
    Houston, TX
    Posts
    3,132
    A properly working x-valve/RT valve will be switching bottle pressure to the top of the on/off at the point it needs to reset. That puts you at 800 psi at a minimum normally. The chamber pressures don't actually vary that much except with the bolt type, with the level 10 being about 50 or 75 psi higher (it's in here somewhere). Depending on velocity, bolts, paint and barrels, they run between 400-500 psi on the final dump chamber pressure, but a shutoff RT valve - ULT on/off will be sitting at bottle pressure.

  7. #7
    Join Date
    Jul 2011
    Location
    United Kingdom
    Posts
    338
    My x-valve + ULT stops cycling at around 800psi

  8. #8
    Quote Originally Posted by Spider-TW View Post
    A properly working x-valve/RT valve will be switching bottle pressure to the top of the on/off at the point it needs to reset. That puts you at 800 psi at a minimum normally. The chamber pressures don't actually vary that much except with the bolt type, with the level 10 being about 50 or 75 psi higher (it's in here somewhere). Depending on velocity, bolts, paint and barrels, they run between 400-500 psi on the final dump chamber pressure, but a shutoff RT valve - ULT on/off will be sitting at bottle pressure.
    If the ULT on off is sitting at bottle pressure, would the trigger pull feel different between tanks that are putting out differing pressures, say a ninja shp at 1100 psi vs a regular 800 psi tank?

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