its extreme high pressure form, water is used
in many industrial cleaning applications requiring
the removal of surface layers as well as dust-free
cutting of some metals and concrete.
exterior applications, gas or propane powered
pressure washers provide enhanced mobility not
available in electric models, as they do not
require use in proximity to an electrical outlet.
However, for indoor applications, electric pressure
washers produce no exhaust and are much quieter
than their gas or propane powered counterparts.
water at medium pressure, in combination with
special chemicals, aids in the removal of graffiti.
This process (especially when the water is hot)
is used as a quick rinser of the softened graffiti.
Sometimes people use a pressurized mixture of
air/sand or water/sand to blast off the surface
of the vandalized area, thus etching the surface
and therefore making it extremely difficult
for anyone to ever use high-pressure cleaning
as a follow-up process. Sandblasting, when used
in graffiti removals, often overcleans a surface
and is capable of leaving a permanent scar on
the building surface.
Pressure washers are classified into following
groups based on the type of fuel/energy they
- Electric pressure washer
- Diesel pressure washer
- Petrol pressure washer
- Gas pressure washer
- Ultra high pressure washer
- Hydraulic high pressure washer
- High pressure steam cleaner