jgotterb 14 Report post Posted January 22, 2010 I am a little confused on how to match nozzles to my pressure washer. My pump is a 5.5 gpm, 3500 psi. So the formula equated 5.8797 which means I need to buy 6.0 size tips, right? Using that same math, can I buy say a set of 4.0 tips and lower my pressure? If the equation is right, then that equals 3062 psi. I'm guessing that's how it works... And I did use the search button, that's where I came up with the info I have so far. Share this post Link to post Share on other sites
Guy B 70 Report post Posted January 22, 2010 J, do a google search... pressure washing nozzle chart. No #4 size nozzle will increase psi and lower gpm. I'm about an hour from you, if you would like to meet sometime give me a call. Whiteville N.C. would be half way for us. I'll bring a rig and try to answer any questions you may have. 910-876-1594 Share this post Link to post Share on other sites
Joe Ortiz 14 Report post Posted January 23, 2010 The bigger the Orfice the less psi and more flow. you dont want to restrict the flow of the pump by putting a smaller size orfice. a 6.0 should be good for that pump. Share this post Link to post Share on other sites
jgotterb 14 Report post Posted January 23, 2010 Thanks, I have the chart, from dultmeier sales. Thats where I got the equations. I must have done the math wrong. Guy, would you mind if I tagged along one day? Share this post Link to post Share on other sites
Guy B 70 Report post Posted January 23, 2010 Sure, just give me a call and we'll set it up. Share this post Link to post Share on other sites
