As we speak about low and high pressure treatment, what do you consider low and what high? 3500PSI is surely a high pressure value, 2000PSI is much lower, but IMO is still in the range of high pressure.
Do you use the term "low pressure" in terms of flat surface cleaning?
Would 2000PSI take out significantly less sand out of paver joints than 3500PSI?
Would 2000PSI keep a surface cleaner to spin fast enough to function properly?
Thank You!
I wondered were the defining line was myself.
I am thinking the definition depends on the industry.
Our industry might consider working pressure from 3000 to 3600 psi "normal high pressure", 4500 psi "high pressure" and 5000 psi mark "extra high pressure" and 6000psi "extreme high pressure" and above that "ultra high pressure".
At least thats how I look at it.
The homeowner looks at 2000psi with big eyes, because it not a pressure that they are exposed to regularly.
Theoretically the lower impact machine should remove less sand for the same time exposure as the higher psi machine only if the sand is capable of being removed by an impact smaller than the smallest applied impact.
Ever experience cleaning a dirty surface with a machine supplying a surface cleaner and then you use your wand on the same surface after with the same angle tip as the surface cleaner and the concrete looks cleaner in the spot that you put the wand to?.( This may not happen all the time, only on surfaces that appear clean after using a surface cleaner but really has another level of clean that could be achieved with higher impact)
2000 psi is only part of the equation to make the surface cleaner spin, how much flow at 2000psi and what size of SC, most SC's have a minimum pressure and flow requirement for effective cleaning.
More than lightly the dirt to paver bond is higher than the sand to sand bond or sand to paver bond, hence sand will be dislodged unless the cleaning force is not applied over the paver joint.
