Soaps and detergents are technically known assurfactants, a word that comes from “surface” and“active.” Soaps and detergents are substances that,when added to water, cause the water to dissolvecompounds more easily. They do so by changing theproperties of the water’s surface.
Typical use
Pressure washing or power washing is the use of high-pressure water spray to remove loose paint, mold, grime, dust, mud, chewing gum and dirt from surfaces and objects such as buildings, vehicles and concrete surfaces. The volume of a mechanical pressure washer is expressed in gallons or litres per minute, often designed into the pump and not variable. The pressure, expressed in pounds per square inch, pascals, or bar, is designed into the pump but can be varied by adjusting the unloader valve. Machines that produce pressures from 750 to 30,000 psi (5 to 200 MPa) or more are available.
Hydro-mechanical drain cleans use high-pressure water to break up obstructions and flush these smaller particles down the drain.Most municipal building codes mandate that drain plumbing increase in diameter as it moves closer to the municipal sewer system. I.E., most kitchen sinks evacuate water with a 1 1⁄2-inch drain pipe, which feeds into a larger 4-inch drain pipe on the main plumbing stack before heading to a septic tank or to the city sewage system.