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Pressure Washer Nozzle Size Calculator

Choosing the Right Nozzle for Your Machine

The orifice size of the nozzle determines the operating pressure of your machine. As a rule of thumb, the smaller the orifice, the greater the restriction of water flowing through the machine. This causes the pressure to increase.

  • Choosing a nozzle with too large of an orifice will reduce operating pressure.
  • Choosing a nozzle with too small of an orifice will limit water flow and possibly create an excessive load on the machine.
  • Use the calculator to properly size the nozzle for your machine.
  • We have a wide variety of pressure washer nozzles.