How they do it
got it now cheers!.Originally posted by Zwitta
If your asking how they get 4.5k on one fill point and 3k on the other despite them being on the same hose... well... think about how your 3.5k air system outputs at 800psi, it takes the pressure and regulates it, brings it down to a suitable level.
Also, as you suggest, H-Pac is a big compressor however there are also some big air tanks inside the truck which store air at something like 6k. These tanks provide the air for the self fill station, the air doesn't come straight from the compressor, this allows for lots of people filling at 4.5k, if the fill station were to be run directly off a compressor, then the players would have to sit and wait for the compressor to slowly pump out compressed air and fill their bottles, but with the H-Pac system, you can open up the valve quickly, and the pressure equalizes in no time.
Hope that helps.