This item is listed in the Eastwood catalog as a sort of sprayer that
connects to 70 psi air and a hose to pressure wash stuff. I was wondering
if anyone has used one or has any comments on its utility compared to a
"real" pressure washer.
I have one of this type (not Eastwood) but I don't have a 'real'
pressure washer to compare it to. It works pretty good and blasts the
thick mud and grease off my tractors. It does make a mess between the
volume of water and the big piles of grease that come off. It probably
would work even better with hot water, I'm working on that now. I paid
about $30 for mine, I can't afford $$$$ for a 'real' high pressure
Harbor Freight had one of these on sale when I was in one of their
stores last week. Six dollars if my memory isn't faulty. Basically
just an air spray wand with a side port, connected to a length of
tygon tubing, whose other end in dropped in a bucket of hot, soapy
water, or solvent. Look up Bernoulli if you want to know the
principal. Basically, gas pressure is inversely related to velocity;
moving air is below atmospheric, hence the fluid is drawn into the
moving air stream. You won't likely get the volume of a true pressure
washer, nor the ability to select different spray tips, but for small
projects, it works just fine. The HF model did have a little needle
valve assembly to regulate how much soapy water/solvent is pulled up.
These things can chew through the air though. Take a normal air
nozzle, hook if up to your line, pull the trigger, and see how long it
takes to cycle. Might be too often on a small contractor type
compressor, but a large, two-stage should be just fine.