How Do Pressure Washers Work?

Before you can learn how a pressure washing machine works, you must understand the components that go into a pressure washer to make them the most powerful cleaning machines available.
Components - What Makes the Machines Work

One of the most important components of commercial pressure washers is the water pump. This is the part that produces power for cleaning by generating highly pressurized water. The pumps are run by a motor, which can be powered by electricity, gasoline, propane, or diesel. Electric units are ideal for indoor applications, as they are quieter and produce no exhaust. Gasoline and propane units are ideal for the outdoors, as they are not limited by the need for an electrical supply.
The next important component of pressure washers is the hose. This material can endure high water pressures as high as 8000 psi and high temperature levels as high as 330°F. Such high-pressure hoses generally contain double-layered wire reinforcement. There is an outer layer of either thermoplastic or rubber; however, rubber is preferable.
Yet another important component of pressure washers is their nozzles. Today's top pressure washers come standard with a variety of nozzles featuring different spray patterns for various applications. The first variety is a nozzle producing the deepest impact in a small area with the thinnest stream. It is best for heavy-duty commercial cleaning. Another variety is ideal for tackling paint and old finish stains. They produce spray in a fan pattern. The third variety of nozzle is meant for debris removal from the ground. They create a wide fan spray pattern. The fourth variety produces the widest fan spray pattern. It is gentle and best for delicate washing jobs. Another variety is a steam nozzle that produces wet steam, with temperatures as high as 330°F. This nozzle is only available with machines that feature a steam temperature option or triple functionality, capable of being used independently as cold water, steam, and hot water pressure washing equipment.
Function - How the Machines Work

Pressure washers work by forcing water through a small nozzle. The high pressured water is then forced across the surface, affording the machine the power to literally blast away stubborn residues and deposits. Variations in power can be achieved by selecting a heated or steam pressure washer, which increases the cleaning power. Commercial and industrial users also have the option to choose among various flow rates and pressure levels, each offering varying levels of power for different applications. Using different nozzle sizes, as well, can change the cleaning ability of these machines.
Using Pressure Washers Smartly

Green chemicals are ideal for use in combination with pressure washers. Though heat, pressure levels, and flow rates are powerful enough for a variety of cleaning tasks, green chemicals can enhance the cleaning power for particular applications, like auto detailing. The use of green chemicals instead of hazardous chemicals will ensure the safety of the user and the environment, too.
When it comes to application, using a pressure washing machine on a wall or fence requires the user to start from the top and go downward. Remember, pressure washers are not for breakable items like glass. The pressure of this cleaning equipment can smash it into pieces.
In case you find the pressure decreasing, check the nozzle and the pump for wear and tear. And yes, always use clean water, or else the debris and dirt from water can block the nozzle, preventing the equipment from rendering an impeccable washing job.