Vacuum Implosion Shrinkage Test on Metal Drums

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=u0eZv4Noy9U

The power of pneumatic force operating in nature is shown in this experimental vacuum implosion video. The combination of atmospheric pressure and vacuum causes the collapse, shrinkage and structural changes of empty metal drums of 208 liters [55 gallons]. Vacuum is generated by a Pneumofore UV4 vacuum pump with capacity 250 m3/h [70 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