Douglas Hicks 128 Report post Posted October 30, 2012 I need to use the pos 1800 psi, 2.8 gpm 110V pw again. I cannot find the nozzles I should have for it. What nozzle size should I be using? Share this post Link to post Share on other sites
NAPWO 21 Report post Posted October 30, 2012 According to the nozzle chart here: http://www.pressurewashoutlet.com/files/NozzleChart.pdf 1800 psi @ 2.5 GPM requires a size 4. Share this post Link to post Share on other sites
