Semi truck parking brake. Release air. Low horn.
Semi truck parking brake, push with light air release
Air compressor releases air, with distant metallic impacts.
Semi truck parking brake, push hard with air release
Oxygen tank system air release. Slow.
Stool cushion, set down, air release, doctor office
Truck, air tank, air release
Oxygen tank. Air release. Thick.
Oxygen tank releases air. Long hiss.
Balloon air release slow and squeaky and timid