The Most Important Pressure Washer Components And Their Functions

by Terrence

A pressure washer is a cleaning device that sprays water with force. It is used for hard cleaning tasks at home and in industries. The market features various types of pressure washers, like electric and gas pressure washers. They offer varying Max. Pressure ratings, applications, design elements, and components. This post focuses on pressure washer components.

Standard pressure washer components

Despite the different pressure washers on the market, they all have similar components. This is because they all function in the same standard way. Below are the typical pressure washer components;

1. The inlet

The inlet is the pressure washer component through which water flows into the pressure washer. The inlet usually comes with a filter or filtration system to prevent dirt and various particles from entering the pressure washer. The particles can cause blockages in the pump.

2. The motor

The motor usually activates the pump. Pressure washers use different motors, depending on the product type and applications. There are two primary types of pressure washer motors; electric and gasoline motors.

3. The pump

The pump works like a human heart. It pumps water through the other pressure washer components. For instance, it helps the water flow through the high-pressure nozzle. The pump is a core element. Any blockages or functionality issues in the pump can keep the pressure washer from working correctly. The water flowing from the pump is usually pressurized. The pressure may differ depending on the device’s pressure rating and construction.

4. The high-pressure nozzles

The nozzle is a small spray hole that allows water to flow through at a specific pressure. The nozzle constricts the water flow, causing the pump to force the water through the hole. This creates water pressure. Therefore, the nozzle works hand in hand with the pump to create high pressure. Most pressure washers come with two or more nozzles. The size of the nozzle affects the water pressure. The smaller the spray hole, the higher the pressure, and vice versa. Therefore, the pressure washer settings are changed by swapping the nozzles.

5. The trigger gun

This component keeps the water from flowing from the nozzle uncontrollably. The trigger gun comes with a ball bearing that keeps the water from flowing. When the gun is triggered, it releases the ball bearing allowing the water to flow through the valve at high pressure. Releasing the trigger causes the ball bearing to get back into position.

6. The hose

This is the component through which water comes out of the pressure washer. A pressure washer hose features components like the inner core, where the water flows, the wire wrap that protects it from deterioration, and the outer cover. The hose size differs depending on the product. They come at different lengths and diameters. The size affects the amount of water that flows through them. The size also influences the application area, especially for electric pressure washers.


The various pressure washer components work together to ensure the device’s efficiency. This means that if any component malfunctions, the entire system could break down. Other components of pressure washers are regulator valves and filters.

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