are those pressure pro belt driven gx390 5.5 units putting out a full 5.5gpm and 3000psi ?
how would a 20" surface cleaner work with that lets say 200ft out
Mine puts out 6 gpm and a smidge under 2500 psi, after 200 feet of hose its closer to 22/2300 and with a 16" surface cleaner I usually have to make passes in both directions to get concrete cleaned… but I’m also only post treating at 1ish%
You will be fine with a 20” SC with that setup……
A 390 cannot make 6gpm@2500 psi. Just a physically impossible. You also cannot alter the laws of friction loss. 16inch surface cleaner is the biggest you can practically use.
Valid, my pressure gauge probably isn’t that accurate to begin with and it barely makes it to 2500 (which could also be the answer to the question I asked in my thread… using wrong sized nozzles to set unloader)
90% of the time you need to always make 2 passes doing residential no matter what your machine is if you really want to clean it or move really slow. If you’re cleaning it right, you should rarely ever need to post treat with more than a HW mix.
1 Like
