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2. 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.

3. Roof cleaning - Wikipedia

   en.wikipedia.org/wiki/Roof_cleaning

   Safe, effective soft washing cannot be achieved with a pressure washer, as the Venturi device (downstreaming) cannot achieve sufficient strength of solution to kill the organisms, cleaning the roof. Use of different tips on the pressure washer, so that it drops the pressure down to around 500 psi (3,400 kPa) or less, relies on the pressure of ...

4. Pound per square inch - Wikipedia

   en.wikipedia.org/wiki/Pound_per_square_inch

   The pound per square inch (abbreviation: psi) or, more accurately, pound-force per square inch (symbol: lbf/in 2), [1] is a unit of measurement of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force with magnitude of one pound-force applied to an area of one square inch .

5. Spray nozzle - Wikipedia

   en.wikipedia.org/wiki/Spray_nozzle

   The simplest single fluid nozzle is a plain orifice nozzle as shown in the diagram. This nozzle often produces little if any atomization, but directs the stream of liquid. If the pressure drop is high, at least 25 bars (2,500 kPa; 360 psi), the material is often finely atomized, as in a diesel injector.

6. Orders of magnitude (pressure) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(pressure)

   10 kPa 1.5 psi Pressure increase per meter of a water column [26]: 10 kPa 1.5 psi Decrease in air pressure when going from Earth sea level to 1000 m elevation [citation needed]

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