The Biggest Misconception in cleaning: 

Nozzles work on any machine

Typically, the most overlooked part of pressure washing is the nozzle. The common misconception is that nozzles are interchangeable on any machine.   Since nozzles come with standard quick connect or thread sizes and in the colors red, yellow, green, white it is commonly believed that they can be used with any pressure washer. Nothing can be further from the truth and using the incorrect size will directly affect the machines performance and in some cases unnecessary wear and possibly damage to the machine will result.
Nozzles are manufactured specifically for the machines volume and pressure. Each nozzle size has a different size orifice. There are numerous sizes but the most commonly used are between 3.0 to 6.5, sized in .5 increments. 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.

Click to view Chart

All nozzles are stamped with a 5 digit number which identifies both the fan degree and nozzle size. For example, a nozzle with the number 40055 has a 40 degree fan pattern and is 5.5 in size. There are many factors that can alter the size of a nozzle including hard water, debris, erosion, operator misuse, or blockage and therefore they should be visually inspected often and replaced periodically.

When a nozzle is larger than specified for the machine it will not produce the amount of pressure the machine is rated for. A common practice is use a larger nozzle to reduce the amount of pressure to insure operators do not damage the cleaning surface. If a machine is designed to run a 3.0 nozzle and a 6.0 is used instead, affectively the amount of pressure will be reduced by 50%.

When a nozzle is smaller than specified for the machine the effects vary depending on if it is a gas engine or electric motor. The added pressure caused by the resistance of pushing water through a smaller orifice will overload an engine and cause premature wear and tear. Operation in this manner over an extended period of time can cause the engine to fail. On an electric motor, the increased resistance will increase the amp draw and cause breakers to trip, heat wiring, and potentially damage any electrical components on the machine.

How to make certain you have the right nozzle?

Click to view Nozzle Sizes

Several manufactures include the nozzle size along with the system information label on the machine. If unavailable or not readable, this chart should be used to determine sizing. It is important to use the actual specifications for GPM and PSI listed on the machine when using this chart. If the GPM of your machine is not listed, use the next higher number to insure safety. If you do not know the specifications of your machine contact Hotsy Pacific and provide us the Horse Power of the motor/engine and we will assist you.

Latest Mandates

For the most current information on California's water mandates and other useful water information go to the Conservation Portal.

Are the FSMA Standards a concern?

The standards set by the FDA Food Safety Modernization Act on Sanitary Transportation of Human and Animal Food went into effect last year includes logged training sessions on sanitation and safety and Hotsy Pacific can help.

We are providing training sessions that introduce and explain the latest sanitation equipment and accessories available. We can also conduct a session on the proper safety procedures for handling pressure washers, tank cleaners, and steam equipment.

Michael's Corner:

Thoughts and Ramblings from the marketing manager


It has been a busy few months working on customer’s equipment in preparation for harvest. Marketing has been busy with continued changes to the website and recently added a page for the Ag industry listing the equipment, accessories, and detergents most commonly used. Keep an eye out for your industry over the next couple of months. Have you seen our online store? Now you can shop on your time which our non-business hours customers appreciate.
Thank you for the business!


Click Here to Email Michael