0:01
Air pump - very short 5.
0:01
Air pump - very short 4.
0:01
Air pump - very short 3.
0:01
Air pump - very short 2.
0:01
Air pump - very short 1.
0:06
Air pump - very long slow.
0:05
Air pump - long and moderate.
0:07
Manual air pump pumping by hand.
0:22
Designed weapon source recording - hollow air pump tapping.
0:03
High pressure air release, smooth and wavering.
0:02
High pressure air release, floppy.
0:01
High pressure air release, quick and shrill.
0:02
High pressure air release, quick spurts followed by moderate release.
0:02
High pressure air release, quick spurts followed by long release.
0:01
High pressure air release, quick spurts.
0:02
High pressure air release, wavering.
0:01
High pressure air release spurt.
0:12
Squeaky air pump pumping (3).
0:14
Squeaky air pump pumping (2).
0:07
Squeaky air pump pumping (1).