How to use a pressure washer & why pressure washing is important
A pressure washer or power washer is a high-pressure mechanical sprayer used to remove loose paint, mold, grime, dust, mud, and dirt from surfaces and objects such as buildings, vehicles, and concrete surfaces. The volume of a pressure washer is expressed in gallons or liters per minute, often designed into the pump and not variable. The pressure, expressed in pounds per square inch, pascals, or bar (deprecated but in common usage), 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. It is important that the water supply be adequate for the pressure washer connected to it, as water starvation will lead to cavitation and damage to the pump elements. Be sure your water source can provide the gallons per minute the pump requires. The basic pressure washer consists of a motor (either electric, internal combustion, pneumatic, or hydraulic) that drives a high-pressure water