Proper way to "drain" a preset?

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  • Mindflux
    Are you e-wheat?
    • Dec 2003
    • 861
    #1

    Proper way to "drain" a preset?

    Well I've got a preset I'll be shipping out and need to get the rest of the air out of it. Obviously I can't shoot it any lower than 900 psi with my mag.

    What would be the best way to drain it.
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    • Cthulhu
      Induced Insanity- Team [c]
      • Oct 2003
      • 129
      #2
      Get an ASA (off your marker possibly), and detatch one end of the hose so it's bare. Then screw in your tank. Be careful though not to freeze your regulator. All the air moving past quickly will draw heat away from the metal and cause the temperature to drop.

      Cheers

      ---
      An All AGD team in Central B.C. on its way. -- Tom Kaye, plz help!
      ---
      • Mindflux
        Are you e-wheat?
        • Dec 2003
        • 861
        #3
        What happens if you freeze up the regulator?
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          • Cthulhu
            Induced Insanity- Team [c]
            • Oct 2003
            • 129
            #4
            You could damage your seals... just drain it slowly.

            ---
            An All AGD team in Central B.C. on its way. -- Tom Kaye, plz help!
            ---
            • Cthulhu
              Induced Insanity- Team [c]
              • Oct 2003
              • 129
              #5
              Funny, I quickly drained my Maxflow and I had frost around the whole thing. Any time you get a transfer of air past an area, esspecialy aluminum, it will cool and will potentially freeze. Btw, yes, I did have to change my seals when I did this.

              ---
              An All AGD team in Central B.C. on its way. -- Tom Kaye, plz help!
              ---
              • SlartyBartFast
                The Flying Scotsman
                • Jun 2002
                • 2940
                #6
                Originally posted by Cthulhu
                Funny, I quickly drained my Maxflow and I had frost around the whole thing. Any time you get a transfer of air past an area, esspecialy aluminum, it will cool and will potentially freeze. Btw, yes, I did have to change my seals when I did this.
                It's not the flow of air, it's the expansion.

                Any expnasion of gas requires heat. Therefor expanding gas cools it's surroundings or the components it is expanding in.

                For the opposite reason, tanks heat up when filled. As do compressor heads and valves, pumps, or any other container or component gas is compressed in. A gas being compressed needs to give off heat.

                  Comment

                  • trains are bad
                    Registered User
                    • Oct 2003
                    • 1751
                    #7
                    When you drain a semi truck tire, the valve stem freezes over and then spits ice out in like a 20 second cycle.
                    TRB's feedback

                      Comment

                      • P8ntballr4life
                        ^SoCal Baller^
                        • Jan 2004
                        • 291
                        #8
                        Take a look at Charles/Gay Lussac's Law: For any gas at a constant pressure, the volume of the gas will vary directly with the absolute temperature. (and visa-versa)
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                          Comment

                          • Cthulhu
                            Induced Insanity- Team [c]
                            • Oct 2003
                            • 129
                            #9
                            No, but its science that puts myths to rest, like Cocker's shoot further than Mags... Without Science, we have a bunch of lemmings following whatever the advertiser says.

                            Cheers

                            ---
                            An All AGD team in Central B.C. on its way. -- Tom Kaye, plz help!
                            ---
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