Air is let through the regulator: Listen & Download Air is let through the regulator .mp3 Error! Change your browser, please! ⇓ Download Balloon descent ⚠ Blower, air broom ⚠ Steam ⚠ Cut through the air with a gas burner ⚠ Air pressure ⚠ Air flow ⚠ Air is blown through a glass tube ⚠ Air release with a loud whistling creak, ⚠ Rope torsion ⚠ Air is bleeding through a hose ⚠ Air bleed, Air compressor, cylinder pressure ⚠ Soccer ball ⚠ ★★★★★