In this blog, we will cover all of the important information you need to know about nozzle pattern and size, also known as the nozzle orifice, for pressure washing. In addition, we will provide helpful examples and an educational video where you can see each nozzle spray pattern in action.
What's the difference between nozzle pattern and nozzle size?
Nozzle patterns refer to the water’s degree of spread as it comes out of the nozzle. The nozzle size, also known as the orifice, is the opening in the nozzle that restricts the water flow from the pressure washer. Think of using your thumb on a garden hose to restrict water flow – the more you cover the hose outlet, the higher the pressure will be, and vice versa.
It’s important to use the proper orifice size. If you use an orifice that is too small, you risk damaging the pressure washer pump due to back pressure.
What are the types of nozzle patterns?
There are four universal spray patterns for pressure washing: Red, Yellow, Green, and White. These colors correspond with spray patterns as follows.
Red – 0°
Orifice sizes are specific to your pressure washer machine and its capabilities. Each user’s necessary orifice size depends on the machine’s PSI and GPM. We have a handy Nozzle Sizing and Orifice Calculator on our website where you can enter the PSI and GPM, and the correct sizing will populate. It’s important to order the correct orifice size no matter which degree pattern you choose; your nozzles will not perform correctly under the incorrect orifice size.