What flow rate does a pressure washer need?
Domestic pressure washers will usually work at around 120 BAR with flow rates varying from 6 to 9 litres per minute.
How do you read a pressure washer nozzle chart?
The color of the nozzle identifies the angle of the spray fan pattern measured in degrees and is generally the same across all sizes. Red is 0, Yellow 15, Green 25, and White 40. The black nozzle is used for applying soap at low pressure and is sometimes used for low pressure rinsing.
How do I know what size orifice for my pressure washer?
Each pressure washer should have a specific nozzle size that comes with it.
- Find the PSI in top column.
- Move down the column until you find the GPM.
- The orifice size will be the number in the left column of the table.
Is 2.4 gpm pressure washer good?
If you’re still wondering what the best combination is, we recommend starting with something in the 3000 – 3500 PSI/2.0 – 2.5 GPM range. These pressure washers are good for most homeowners, as they tend to work very efficiently and are still affordable.
What is more important in a pressure washer PSI or GPM?
GPM is usually more important to contractors than PSI. Since most contractors use cleaning chemicals to do all of the cleaning, their job becomes one primarily of rinsing the dirt away.
How do you read a spray nozzle?
Most companies identify their flat-fan nozzles with a four or five digit number (Figure 2). The first numbers are the spray angle and the other numbers signify the discharge rate at rated pressure. For example, an 8005 has an 80 degree spray angle and will apply 0.5 gallons per minute (GPM) at rated pressure of 40 psi.
Which pressure washer nozzle is the strongest?
Red Spray Tip
Red Spray Tip (0-Degrees) The red spray tip creates a 0-degree spray pattern and is the most powerful nozzle of them all. You need to be very careful using this tip to make sure you don’t cause any damage to the surface you are cleaning.
Is higher GPM better?
The higher the GPM the faster it will be to clean large surfaces. This is not to say that PSI isn’t an important factor to look at when deciding on the right pressure washer for your needs.
What do the numbers on a spray nozzle mean?
Does a nozzle increase flow rate?
The purpose of using a nozzle is to accelerate the flow to achieve critical or sonic conditions (i.e., choked flow) at its throat. This happens as the pressure differential upstream and downstream the nozzle increases.