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2. Water jet cutter - Wikipedia

   en.wikipedia.org/wiki/Water_jet_cutter

   A direct drive pump works much like a car engine, forcing water through high-pressure tubing using plungers attached to a crankshaft. An intensifier pump creates pressure by using hydraulic oil to move a piston forcing the water through a tiny hole. [37] [38] The water then travels along the high-pressure tubing to the nozzle of the waterjet ...

3. Pressure washing - Wikipedia

   en.wikipedia.org/wiki/Pressure_washing

   A pressure washer is used to remove old paint from a boat. Patio flagstones being pressure washed using a rotary nozzle. Pressure washing or power washing is the use of high-pressure water spray to remove loose paint, mold, grime, dust, mud, and dirt from surfaces and objects such as buildings, vehicles and concrete surfaces.

4. Hydraulic mining - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_mining

   Gold miners excavate an eroded bluff with jets of water at a placer mine in Dutch Flat, California sometime between 1857 and 1870.. The modern form of hydraulic mining, using jets of water directed under very high pressure through hoses and nozzles at gold-bearing upland paleogravels, was first used by Edward Matteson near Nevada City, California in 1853 during the California Gold Rush. [3]

5. Injector - Wikipedia

   en.wikipedia.org/wiki/Injector

   An injector is a system of ducting and nozzles used to direct the flow of a high-pressure fluid in such a way that a lower pressure fluid is entrained in the jet and carried through a duct to a region of higher pressure. It is a fluid-dynamic pump with no moving parts except a valve to control inlet flow.

6. Water cannon - Wikipedia

   en.wikipedia.org/wiki/Water_cannon

   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. [15] One such cutter delivers 55,000 psi (380 MPa) through a nozzle 0.003 inches (76 μm) in diameter at 1 kilometre per second, which can cut a person at a close range.

7. Drain cleaner - Wikipedia

   en.wikipedia.org/wiki/Drain_cleaner

   High-pressure sewer jetters can be mounted on trolleys, inside vans or on trailers. The power of a sewer jetter ranges from 1,000 psi (68 atm) to 5,000 psi (340 atm). Sewer jetter nozzles come in different sizes and applications; a bullet-type nozzle with a streamlined profile can clear a hole for the larger root cutting nozzle.