Tool Tip #8: Easy Fill for Portable Tank

Portable air tanks are not only great for filling tires, but also supply compressed air for such impulse tools as brad nailers, making for quieter, more peaceful installations.  Typically they are designed to be filled with an air chuck through a standard valve stem shown here within the knurled red knob.  Much faster and easier, however, is using a double-ended male plug placed into the female quick couplers of both the compressor and the portable air tank.  Thus the tank is filled through it's outlet (make sure the air valve is on!).  If you're fast you can release both female quick couplers simultaneously, and the male plug assembly just falls away with no air loss from the tank.