0° Red Nozzle: Used for blasting hard-to-clean items such as caked mud, tar, glue, stubborn stains, and much more.
15° Yellow Nozzle: Used for paint preparation, removing dirt from construction or farm equipment, removing growth from boats and marine equipment, etc.
25° Green Nozzle: Used for standard cleaning/washing to remove general mud, dirt, and grime from surfaces.
40°White Nozzle: Used for light cleaning and rinsing of automobiles, boats, roofs, windows, etc.
65° Black Nozzle: Uses a wider spray and lower PSI for soap application.
Example: To find the correct nozzle size to use when running 2.5 GPM at 1000 PSI, find 2.5 under the GPM column, then read across to the right to find the 1000PSI column. The correct nozzle size is 5.0
NOTE: Make sure that the motor/engine, pump and other components are rated for the applied pressure. Failure to match proper componets could result in equipment damage.