Please take this with a grain of salt as I have never worked with RC pneumatics before.
Unlike a hydraulic system, most air systems have a tank that the pump will pressurize. The attachements are ran off the tank to assure there's suffiecient flow and pressure. One of the reasons for this is air is compressable.
I would almost think a tank would be needed.
With that being said, I'm awaiting replies from others as well.
