All About Power Wash Daily News

How does a pressure washer work?

Jul 20

You have tried water. You have tried soap. You have tried scrubbers and scouring. You've tried harsh chemicals that didn't work. So what do you do if it doesn't work? Use the pressure washer. These super-powerful hoses, also known as "power washers," are used by many people to clean their homes with water jets that pressurize at 100-200 times the air pressure. That's approximately 1500-3000 lbs per square inch or PSI. These hoses are great for patios, driveways, lawn furniture, barbecue grills, and other exterior grime. Let's have a closer look at their operation!


What makes pressure jets work better?

Water is so clean because its molecules have an electrical polarity (one side is positively charged, the other is negative), and they stick to everything. Soap chemicals help water do its job better by breaking down grease and allowing water to flush away more quickly. Some types of ground-on dirt won't move no matter what you do.


A pressure washer is an excellent tool for this purpose. It uses a narrow, high-pressure jet of cold or hot water to blast dirt away. The water travels quickly and hits the dirt with high energy. It knocks away dirt and dust like a steady rain of tiny hammer blows. The water is only water, so that it won't cause any damage to most hard surfaces. It's best to test the pressure washer in a small area before you begin cleaning to ensure it doesn't damage any surface. Before you use a pressure washer, make sure to read the instructions!


Parts of a pressure washer

The pressure washer is not as sophisticated as it sounds. Instead, it is a simple water pump powered by an electric motor. The washer draws water from the faucet. The pump then accelerates the water to high pressure and sprays it through a trigger gun at high speed. For cleaning various things, you can attach other attachments to your hose.

These are the significant parts of a pressure washer.

  • Water inlet:

    The hose connects the pressure washer to the main water supply. The inlet is usually equipped with a filter to prevent dirt and debris from entering the washer and clogging it up. You don't want any grit in your washer, especially since they can come crashing out at high speed from the other end!
  • Gas engine or electric motor:

    Smaller pressure washers are powered by domestic electricity, while larger models use smaller gasoline engines. These engines look similar to lawnmowers, with power ratings of around 3-4kW and 3.5-5.5HP, respectively. If you are working outdoors and don't have access to electricity, gas engine models can be a great option. The engine or motor is used to power the water pump.
  • Water pump:

    This is the heart and soul of a pressure washer. It works similarly to a ground-water pump but is driven at high speeds by an electric motor or gas engine. The pump pulls water from the faucet and pushes it to the other. Water is sucked out of the faucet in a high-pressure jet when it pushes it the other way. Pumps can handle water flows of approximately 4-8 liters (1 to 2 gallons) per hour.
  • High-pressure hose:

    This tube runs from the washer to the cleaning attachment that you have chosen. A normal piece of tubing would not be able to survive the pressure of the water running through it. The high-pressure hose is made with wire mesh and two to three layers of high-density rubber. While it is important to choose a hose with a higher pressure rating than your pressure washer's pump, you don't need to worry if your washer comes equipped with its hose. The safety margin for pressure washer hoses is usually around 300 percent. If your washer is rated at 2000psi, your hose should be capable of withstanding pressures of at most 6000psi.
  • Cleaning attachment:

    Depending on the job, you can use a trigger gun (a valve that lets water through when you squeeze it) or a rotating wand spray to clean your drive. Powered attachments work by the water moving through them.


Some pressure washers come with additional features. For example, because water and electricity can be dangerous, many pressure washers include ground-fault circuit breakers, also known as residual power devices (RCDs), built into their power supply. These are designed to protect you from an electrical fire. While most washers do the same thing and work the same way, the more expensive ones have higher water pressures and better cleaning power.


How does a pressure washer operate?

Here is a summary of the principle:

  • The detergent is emitted from one hose to a container or bottle.
  • Cold water flows from a tap (tap) and through another hose. It is then filtered along the way.
  • The washer can be powered by either an electric motor or a diesel engine.
  • The engine or motor powers a water pump (or impeller). It draws in detergent and water and then mixes them. Most washers heat water to temperatures between 50 and 70 degrees Celsius (125 to 155 degrees F).
  • The pump sprays hot, soapy water out of the reinforced, high-pressure exit hose and any attached attachments. These attachments have a narrow nozzle that increases the water jet's pressure. As a result, high-pressure jets clean more effectively and use around 80 percent less water (which is more economical if you have metered water).


Pressure washers have their drawbacks

Although pressure washers are great for cleaning up, they also have some problems.

  • They consume a lot of water, typically 4-8 liters per minute or 1-2 Gallons per hour. So if you don't want to flood, the water must move quickly.
  • They are noisy (sound levels range from 75 to 90 dBA). If this is a concern, you might find it challenging to get quieter models.
  • They can destroy everything around them, even you! You can get them very dirty by sweeping up all the filth. To minimize the amount of cleaning up later, think carefully about which order you will work. To avoid creating too much mess, choose your attachments carefully and wear waterproof, protective overalls.
  • While power washers can be used safely and are well-insulated, there is always the risk of electricity being used near water. If you don't have a gasoline-powered machine, use an RCD.
  • The pressure washers can damage delicate fixtures and fittings. If misused, pressure washers can damage wood decking and cause leakage. You can test your washer in a small area to determine if it is safe.