It is a construction of processed refrigeration unit, parts of which were used to create a compressor.
What also you will need:
10l tank
pressure switch
regulator with water separator
wheels (for example from an old mower)
elements of gas pipe 3/8”
30mm angle
pipe for handle
Wheels are used because the device turned out to be too heavy. You can also add soldered “hanger”.
Safety fuse was made of a 25cm long piece of hose, through which air gets inside the tank from the compressor. It can be seen in one of the pictures. Its resistance should be about 6 atm.