Watercannon 8
Watercannon 8 : Other types Water cannon differ from other similar devices in the volume of water delivered in a given time, the nozzle speed, the pressure that it is delivered at, and to a lesser extent the total volume that can be delivered. They are also generally portable. The method of employment is also important in labelling a device a water cannon. Nevertheless, the distinction between a water cannon and other similar devices is fuzzy. For example: - Pressure washers generally produce an extremely high pressure stream where the power of the stream drops off significantly over a very short distance. Water pistols and other toys deliver much less water at a much lower pressure with a much lower volume of water. Ultra high pressure water jet cutters are used to cut a wide variety of materials including granite, concrete (see hydrodemolition), ceramics, fabric and even Kevlar. One such cutter delivers 55,000 psi (380 MPa) through a nozzle 0. 003 inch (8 micrometres) in diameter at 1 kilometre per second. This can cut a person in half at close range. There are reports of accidental deaths involving the industrial use of high-pressure water
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