The work of oxygen equipment, the release of oxygen: Listen & Download The work of oxygen equipment, the release of .mp3 Error! Change your browser, please! ⇓ Download Helium balloon ⚠ Inflating a mattress ⚠ Air flow ⚠ The release of, The work of oxygen equipment ⚠ Balloon descent ⚠ Soccer ball ⚠ Air pressure ⚠ Oxygen balloon ⚠ Construction, compressor discharges air ⚠ Air is let through the regulator ⚠ Air is blown through a glass tube ⚠ Balloon inflating ⚠ ★★★★★