Nozzle Chart

Use the following chart, based on your GPM and PSI to determine your optimum nozzle orifice size.

example: Pressure Washer is 3000psi 4.0gpm

1. Find 3000psi column.
2. Run finger down column until you get the closest match for gpm (3.9gpm)
3. Optimum nozzle size is 4.5