In previous articles we explained about the various parts of a pressure washer. In this article we explain the differences in the various nozzles available for Ryobi pressure washers.

Most pressure washer nozzles are colour coded to indicate what pattern (degree) of fan spray they produce. Although colors may vary depending on the manufacturers, described below are what is commonly used as the industry standard.

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In a previous article we talked about parts of a pressure washer, in this article we talk about specifics, namely pressure washer unloader valves.

Pressure washer unloader valves are the main “safety” in your power washer system. The most commonly used is the “pressure actuated” type valve. When the pressure gun trigger is released the valve senses the pressure build up and like a “traffic cop” it diverts the water flow from the pump outlet back into the inlet side of the pump this is called “bypass mode.” Without this critical component this closed-gun situation would build pressure to the point where it would stall the power source, rupture the gun, hose or even the pump itself.

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In a previous article we showed the parts of a pressure washer, in this article we show how a pressure washer trigger gun works.

Generally the gun will have a 3/8? inlet port where the hose is attached and a 1/4? outlet port to the wand/lance (this is when 3/8? pressure hose is used). When the trigger is released the gun is said to be in “closed” position stopping the flow of water. When the trigger is squeezed it is in “open” position directing water to the nozzle once again.

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Motor (Gasoline, Diesel or Electric)

• Pressure Pump
• Pressure Hose
• Trigger Gun
• Unloader Valve
• Pressure Wand or Lance
• Wand or Lance Tip

THE PRESSURE WASHER MOTOR

Different sorts of motors are used for different types of pressure washers. It may also depend on the type and location of the applications. Most high power washers used in industrial works, commonly use gasoline or diesel motors. Because most industrial cleaning requires great amount of time, these motors could run much longer without overheating compared to their electric counterpart. And since most industrial works are done outdoors; and sometimes or mostly offsite, where there are no available electricity. The ones with electric motors are mostly used for light to moderate washing works (e.g. house, car, and small boats) and are the most excellent used for indoor applications because these motors do not emit harmful fumes.

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