What size nozzles for a four bar whisper wash classic


#41

Man, honestly you just gotta know concrete. I have neighborhoods where I know the concrete is crap. It’s another reason why I don’t do add ons. My guys may not not if the driveway can be cleaned.


#42

Fortunately, the driveway was my own. I am just getting my trailer in production. I have a 9-5 job otherwise.
I am testing mixes and surface cleaning on my own two houses first.
I am coming from a 2.1 GPM to a 8 GPM machine with little knowledge in between.
This 22 horsepower took off the top layer of concrete and I was not expecting it.
I will try to get nozzles that take me down to 2500 PSI, is that a safe area for crappy concrete?
I plan to work my own neighborhood with similar driveways, to start


#43

What size is your machine? that sounds like bad concrete. Pretty sure that’s what’s on my machine, I’ll look later today. and have never had a problem. How many feet of hose were you running?


#44

If what you said above is correct regarding your nozzles size, your machine GPM, and your hose length, you already were at 2300 PSI on that job, just the same as @Kps0410.


#45

8 GPM @ 3500 PSI Pressure Pro machine w/Honda 690 and 225 feet of 3/8 hose.


#46

ordered the 2503 nozzles, four of them, will post results once I get them installed. The 2502s were stripping the cream off the concrete and exposing the aggregate. These were broomed concrete drives. We shall see.