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commercial/industrial filters, entirely manufactured in
our Culligan plants, are made of steel and are protected
by anti-corrosion coatings, a heavy layer of epoxy resin
in the inside and synthetic paint on the outside. For the
Hi-Flo2 series the protection is achieved with a plastic
sheet in the inside of the tank and a plastic, rigid container
on the outside.
Culligan filters are
available in the Hi-Flo2, Hi-Flo6, and Hi-Flo9 models. The
last two differ only in the depth of the filtering bed and,
as a consequence, the total height. The filters of the Hi-Flo6
and Hi-Flo9 series can be combined in modules to achieve
filtration systems ideally adapted to your needs. They can
also be combined as double filtration in series. For more
detail, download
our brochure on Filtration for Commercial/Industrial Applications.
If you need an economical
and flexible filtration system for small flow rate applications,
you should look at our instantaneous
cartridge filters.
Filtering Minerals
Culligan has a solution
for all your filtering needs. Click here for a summary of
our filter systems and their main applications. A complete
range of filtering minerals can be selected for each type
of Culligan filters, achieving the best solution for each
problem.
Filtr-Cleer,
a multilayer filter whose typical application is the elimination
of turbidity and of samll quantities of heavy metals.
The minerals utilised as filter bed media are Cullcite,
a granular anthracite at low density, that makes the upper
layer, and Cullsan, an ultra-pure silica sand with
no carbonates, chemically inert and of unlimited life.
Cullar, for
typical applications of removal of undesired odours and
taste, and excess chlorine. Cullar is a granular
form of activated carbon with high degree of porosity
conferring on it an extraordinary adsorbing capacity.
Cullneu, for
typical applications in acid water neutralisation inhibiting
water aggressiveness. Cullneu is a granular mineral
of calcium carbonate that dissolves in proportion to the
amount of neutralized acidity and must therefore be refilled
periodically.
Super Iron
is a selective mineral for iron and manganese removal.
It can be activated by means of many oxidant agents. It
does not require the use of potassium permanganate.
Omnifiltration System And "OFSY" Filtering
Groups
While "multilayer filtration"
performed by a Filtr-Cleer filter captures very large
quantity of turbidity with limited pressure losses, it doesn't
prevent the leakage of small turbidity particles that escape
from the granules before complete bed saturation is reached.
To solve this problem, Culligan has perfected the "Omnifiltration"
system, made of two filters of Filtr-Cleer media
placed in series: the first works until the complete saturation
of the mineral and the second buffers any turbidity leakage,
guaranteeing the output of perfect and constant crystal-clear
water, even if the quality of the inlet water changes.
Some of the most
appreciated features of the OMNIFILTRATION (OFSY) system,
are low installation and operating costs, reduced dimensions,
high versatility, simple and quick start-up procedure, and
excellent water quality. This makes the OFSY system superior
to any other conventional filtration method. OFSY is in
operation in hundreds of waterworks around the world.
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