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 Truck Air Brakes ⚠ Air release with a loud whistling creak, ⚠ Suction action of air ⚠ Balloon inflating ⚠ Mask breathing ⚠ Air broom, Blower ⚠ Air compressor operation ⚠ The release of, The work of oxygen equipment ⚠ Oxygen balloon ⚠ Helium balloon ⚠ Rope torsion ⚠ Air is let through the regulator ⚠ ★★★★★