The subject comes up all the time so you can
google this news group. HVLP uses less paint
because more of it goes on the intended surface
(less over spray). In contrast, many HVLP units
do not do well with heavy paint such as latex.
You also need to consider the differences between
conversion HVLP units (which use a compressor) and
HVLP units with their own blower. Oh yeah, high
end HVLP units can be very expensive. Depends on
what you want if for.
Tom, I see from your other post that your talking about a wagner type
painter. The other poster is correct that these are just above a POS.
If you want something to paint a house rent an airless sprayer. If you
want a fine finish then get an HVLP system.
Airless sprayers atomize the paint by the enormous pressure that the
paint is under at the exiting nozzle.
HVLP or regular sprayers atomize the paint by blowing the paint feed
apart with air.
The systems are not interchangeable.
The HVLP/regular sprayers can be used for basically the same jobs.
Airless, however, is best suited for serious through-put of heavier
materials. I just painted my daughter's sitting room. The room's ceiling
is acoustic tile, and the walls are T&G panels. I covered the carpet
with plastic. taped the windows and baseboards, and painted the room
with 2 gallons of paint in 30 minutes. That's where the airless system
shines. Mine is a Titan system and it has paid for itself many times
over in the last 5 years. I ended up with it after a large renovation
job where it was the only way to paint the overhead exposed structural
steel. With an extension wand, it was actually a lot of fun.
Airless systems are often rated in HP (mine is a 3/4 HP at 3000 PSI)
Some are rated in Gallons per minute, which should tell you something.
Great for the outside of houses, barns etc. Great for irregular surfaces
like block and brick.
HVLP is for finer finishes. Conversion guns are as good as any. No need
for all that dedicated turbine stuff although a friend does very nice
work with his Fuji. If you're planning on using waterborne finishes,
make sure that stainless components are used.
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