I’m running a 4gpm/4000psi machine and using my hi-draw 4gpm downstream injector for the first time. I tried to use it to post-treat a driveway I’d just cleaned, using my j-rod (the one recommended for a 4gpm setup.) That was blasting my House-wash mix all over the place and sending spray off the surface onto bordering grass.
I pulled off the j-rod and gun, and just semi-closed the ball valve at the end of my hose to make get a more manageable flow, but remember reading that this isn’t an ideal solution, though a few pros seem to not care. I tried pretty hard searching on which tips or nozzles to use for nice easy post-treat that isn’t blasting all over, and couldn’t re-find the post I know is out there.
Is anyone willing to advise so I don’t have to order a ton of tips to figure out which one is ideal for pre or post treat of concrete or hard surfaces?
By all means feel free to hear out the suggestions by more experienced individuals here, but I just use the 2530 meg nozzle for my 3.5gpm unit when I’m laying housewash mix as a post treat. I walk along along the edge of driveway/curb/walkway in the grass and spray towards the concrete for my edges.
For more stubborn areas, I’ll use a small 1-gal pump up sprayer to tackle small spots or use my 12v for larger areas.
As jake said above, if you need a stronger mix, using a downstream injector and pressure washer won’t cut it. You’ll have to determine that on each job.
